{% extends "shared/frontend/base.html" %}

{% block title %}Internetforbindelser{% endblock %}

{% block extra_css %}
<style>
  .internet-hero {
    background:
      radial-gradient(circle at top right, rgba(15, 76, 117, 0.18), transparent 34%),
      linear-gradient(135deg, rgba(15, 76, 117, 0.1), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(15, 76, 117, 0.14);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: 0 16px 36px rgba(15, 76, 117, 0.08);
  }

  .internet-panel {
    background: var(--bg-card);
    border: 1px solid rgba(15, 76, 117, 0.12);
    border-radius: 20px;
    box-shadow: 0 14px 32px rgba(15, 76, 117, 0.06);
  }

  .internet-kpi {
    background: linear-gradient(180deg, rgba(15, 76, 117, 0.04), rgba(15, 76, 117, 0.01));
    border: 1px solid rgba(15, 76, 117, 0.1);
    border-radius: 16px;
    padding: 1rem;
    height: 100%;
  }

  .internet-kpi-label {
    color: var(--text-secondary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .internet-kpi-value {
    color: var(--text-primary);
    font-size: 1.55rem;
    font-weight: 700;
  }

  .internet-toolbar {
    display: grid;
    grid-template-columns: 1.4fr 1fr 0.8fr 0.9fr auto auto;
    gap: 0.75rem;
  }

  .internet-row {
    cursor: pointer;
  }

  .internet-row td {
    vertical-align: middle;
  }

  .internet-tabs {
    display: inline-flex;
    padding: 0.35rem;
    border-radius: 999px;
    background: rgba(15, 76, 117, 0.07);
    gap: 0.35rem;
  }

  .internet-tab {
    border: 0;
    background: transparent;
    border-radius: 999px;
    padding: 0.6rem 1rem;
    font-weight: 700;
    color: var(--text-secondary);
  }

  .internet-tab.active {
    background: #0f4c75;
    color: white;
  }

  .internet-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    border-radius: 999px;
    padding: 0.18rem 0.5rem;
    font-size: 0.72rem;
    font-weight: 700;
    background: rgba(15, 76, 117, 0.08);
    color: #0f4c75;
    margin-right: 0.35rem;
  }

  .internet-status {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .internet-status.active {
    background: rgba(25, 135, 84, 0.12);
    color: #146c43;
  }

  .internet-status.inactive {
    background: rgba(108, 117, 125, 0.14);
    color: #495057;
  }

  .internet-status.pending,
  .internet-status.planned {
    background: rgba(255, 193, 7, 0.18);
    color: #997404;
  }

  .internet-status.terminated,
  .internet-status.cancelled {
    background: rgba(220, 53, 69, 0.12);
    color: #b02a37;
  }

  .internet-mini {
    color: var(--text-secondary);
    font-size: 0.83rem;
  }

  .internet-quick-form {
    border: 1px dashed rgba(15, 76, 117, 0.2);
    border-radius: 18px;
    background: rgba(15, 76, 117, 0.03);
    padding: 1rem;
  }

  .quick-customer-results {
    max-height: 260px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 0 0 12px 12px;
    background: var(--bg-card);
  }

  .quick-customer-result {
    display: block;
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 0;
    border-bottom: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
    text-align: left;
  }

  .quick-customer-result:hover { background: rgba(15, 76, 117, 0.09); }

  .quick-type-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:.75rem; }
  .quick-type-choice { border:2px solid var(--border-color); border-radius:14px; padding:1rem; background:var(--bg-card); color:var(--text-primary); text-align:left; }
  .quick-type-choice:hover { border-color:#0f4c75; background:rgba(15,76,117,.06); }
  .quick-type-choice.active { border-color:#0f4c75; background:#0f4c75; color:#fff; box-shadow:0 8px 22px rgba(15,76,117,.22); }
  .quick-type-choice.active .text-muted { color:rgba(255,255,255,.8)!important; }

  .invoice-sync-status {
    display:inline-flex;
    align-items:center;
    border-radius:999px;
    padding:.3rem .65rem;
    font-size:.72rem;
    font-weight:800;
    white-space:nowrap;
  }

  .invoice-sync-status.success { background:rgba(25,135,84,.14); color:#146c43; }
  .invoice-sync-status.warning,
  .invoice-sync-status.skipped,
  .invoice-sync-status.not_logged { background:rgba(255,193,7,.2); color:#765a02; }
  .invoice-sync-status.error { background:rgba(220,53,69,.14); color:#b02a37; }
  .invoice-sync-status.legacy_success { background:rgba(13,110,253,.12); color:#084298; }
  .invoice-sync-error { max-width:420px; white-space:normal; color:#b02a37; font-size:.8rem; }

  @media (max-width: 991px) {
    .internet-toolbar {
      grid-template-columns: 1fr;
    }
  }
</style>
{% endblock %}

{% block content %}
<div class="container-fluid py-4">
  <div class="internet-hero mb-4">
    <div class="d-flex flex-column flex-xl-row justify-content-between align-items-xl-center gap-3">
      <div>
        <div class="small text-uppercase fw-semibold text-muted mb-2">Økonomi / Drift / Support</div>
        <h2 class="h3 mb-1">Internetforbindelser</h2>
        <div class="text-muted">Samlet overblik over forbindelser, kunder, IP-adresser, kontrakter og dækningsbidrag.</div>
      </div>
      <div class="d-flex gap-2 flex-wrap">
        <button class="btn btn-outline-secondary" type="button" onclick="refreshActiveTab()">
          <i class="bi bi-arrow-repeat me-1"></i>Opdater
        </button>
        <button class="btn btn-outline-primary" type="button" data-bs-toggle="modal" data-bs-target="#ipNordicImportModal">
          <i class="bi bi-file-earmark-spreadsheet me-1"></i>Importér IP Nordic
        </button>
        <button class="btn btn-primary" id="newConnectionBtn" type="button" data-bs-toggle="modal" data-bs-target="#quickSetupModal">
          <i class="bi bi-plus-lg me-1"></i>Opret eller tilknyt
        </button>
      </div>
    </div>
    <div class="internet-tabs mt-3">
      <button class="internet-tab active" type="button" id="tabAll" onclick="setActiveTab('all')">Alle forbindelser</button>
      <button class="internet-tab" type="button" id="tabShared" onclick="setActiveTab('shared')">Delte hovedforbindelser</button>
      <button class="internet-tab" type="button" id="tabBmcnet" onclick="setActiveTab('bmcnet')">BMCnet</button>
      <button class="internet-tab" type="button" id="tabDedicated" onclick="setActiveTab('dedicated')">Dedikerede</button>
      <button class="internet-tab" type="button" id="tabUnallocated" onclick="setActiveTab('unallocated')">Ikke allokeret</button>
      <button class="internet-tab" type="button" id="tabInvoices" onclick="setActiveTab('invoices')">Behandlede internetfakturaer</button>
    </div>
  </div>

  <div class="row g-3 mb-4" id="connectionsMetrics">
    <div class="col-6 col-xl-3">
      <div class="internet-kpi">
        <div class="internet-kpi-label">Forbindelser</div>
        <div class="internet-kpi-value" id="metricTotal">0</div>
      </div>
    </div>
    <div class="col-6 col-xl-3">
      <div class="internet-kpi">
        <div class="internet-kpi-label">Aktive / afventer</div>
        <div class="internet-kpi-value" id="metricActive">0</div>
      </div>
    </div>
    <div class="col-6 col-xl-3">
      <div class="internet-kpi">
        <div class="internet-kpi-label" id="metricSharedLabel">Delte hoveder</div>
        <div class="internet-kpi-value" id="metricShared">0</div>
      </div>
    </div>
    <div class="col-6 col-xl-3">
      <div class="internet-kpi">
        <div class="internet-kpi-label">Dækningsbidrag</div>
        <div class="internet-kpi-value" id="metricMargin">0 kr.</div>
      </div>
    </div>
  </div>

  <div class="internet-panel p-4 mb-4 collapse" id="createConnectionBlock">
    <div class="internet-quick-form">
      <div class="d-flex justify-content-between align-items-center mb-3">
        <div>
          <div class="fw-semibold">Opret ny forbindelse</div>
          <div class="internet-mini">Bruges til fysiske og interne BMC-forbindelser.</div>
        </div>
        <div class="small text-muted" id="createConnectionFeedback" role="status"></div>
      </div>
      <div class="row g-2">
        <div class="col-lg-3">
          <input type="text" class="form-control" id="connectionNameInput" placeholder="Navn" />
        </div>
        <div class="col-lg-2">
          <select class="form-select" id="connectionVendorInput"><option value="">Vælg internetleverandør</option></select>
        </div>
        <div class="col-lg-2">
          <input type="number" class="form-control" id="connectionCustomerIdInput" placeholder="Kunde-ID" />
        </div>
        <div class="col-lg-2">
          <input type="text" class="form-control" id="connectionCircuitInput" placeholder="Kredsløb" />
        </div>
        <div class="col-lg-3">
          <input type="text" class="form-control" id="connectionAddressInput" placeholder="Installationsadresse" />
        </div>
        <div class="col-lg-2">
          <select class="form-select" id="connectionAllocationInput">
            <option value="dedicated">Dedikeret</option>
            <option value="shared">Delt</option>
          </select>
        </div>
        <div class="col-lg-2">
          <select class="form-select" id="connectionValueTypeInput" onchange="toggleCreateValueFields()">
            <option value="other">Anden værdi</option>
            <option value="subscription">Abonnement</option>
            <option value="bmc_networks">BMC Networks</option>
            <option value="delefiber">Delefiber</option>
          </select>
        </div>
        <div class="col-lg-4" id="createValueLabelWrap">
          <input type="text" class="form-control" id="connectionValueLabelInput" placeholder="Værdi / klassifikation" value="Mangler klassifikation" />
        </div>
        <div class="col-lg-4 d-none" id="createSubscriptionWrap">
          <input type="text" class="form-control" id="connectionSubscriptionInput" list="subscriptionLookupList" placeholder="Abonnement">
          <input type="hidden" id="connectionSubscriptionIdInput" />
        </div>
        <div class="col-lg-2">
          <input type="text" class="form-control" id="connectionTechnologyInput" placeholder="Teknologi" />
        </div>
        <div class="col-lg-2">
          <input type="number" class="form-control" id="connectionDownloadInput" placeholder="Download" />
        </div>
        <div class="col-lg-2">
          <input type="number" class="form-control" id="connectionUploadInput" placeholder="Upload" />
        </div>
        <div class="col-lg-2">
          <input type="number" class="form-control" id="connectionPurchaseInput" placeholder="Kost" />
        </div>
        <div class="col-lg-2">
          <input type="number" class="form-control" id="connectionSalesInput" placeholder="Salg" />
        </div>
        <div class="col-lg-2">
          <select class="form-select" id="connectionStatusInput">
            <option value="active">Aktiv</option>
            <option value="planned">Planlagt</option>
            <option value="inactive">Inaktiv</option>
          </select>
        </div>
        <div class="col-12">
          <textarea class="form-control" id="connectionNotesInput" rows="2" placeholder="Noter, SLA, overvågning, intern struktur..."></textarea>
        </div>
      </div>
      <div class="mt-3">
        <button class="btn btn-primary" type="button" onclick="submitConnectionForm()">Gem forbindelse</button>
      </div>
    </div>
  </div>

  <div class="internet-panel p-4 mb-4" id="connectionsOverview">
    <div class="internet-toolbar mb-3">
      <input type="search" class="form-control" id="searchInput" placeholder="Søg navn, kunde, leverandør, kredsløb eller adresse" />
      <input type="text" class="form-control" id="providerFilter" placeholder="Filtrer leverandør" />
      <select class="form-select" id="statusFilter">
        <option value="">Alle statusser</option>
        <option value="active">Aktive</option>
        <option value="pending">Afventer kontrol</option>
        <option value="planned">Planlagte</option>
        <option value="inactive">Inaktive</option>
        <option value="terminated">Opsagte</option>
      </select>
      <select class="form-select" id="valueTypeFilter">
        <option value="">Alle værdier</option>
        <option value="subscription">Abonnement</option>
        <option value="bmc_networks">BMC Networks</option>
        <option value="delefiber">Delefiber</option>
        <option value="other">Anden</option>
      </select>
      <button class="btn btn-outline-secondary" type="button" onclick="loadInternetPage()">Anvend</button>
      <button class="btn btn-light border" type="button" onclick="resetFilters()">Nulstil</button>
    </div>

    <div class="row g-3 mb-3">
      <div class="col-xl-6">
        <div class="internet-mini" id="pageSummaryText">Indlæser forbindelser...</div>
      </div>
      <div class="col-xl-6 text-xl-end">
        <div class="internet-mini">Klik på en række for at åbne forbindelsesdetaljer.</div>
      </div>
    </div>

    <div class="table-responsive">
      <table class="table align-middle mb-0">
        <thead class="table-light">
          <tr>
            <th>Forbindelse</th>
            <th>Kunde</th>
            <th>Leverandør / kredsløb</th>
            <th>Hastighed / IP</th>
            <th>Økonomi</th>
            <th>Status</th>
            <th></th>
          </tr>
        </thead>
        <tbody id="connectionsTableBody">
          <tr>
            <td colspan="7" class="text-muted py-4">Indlæser...</td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>

  <div class="internet-panel p-4 mb-4 d-none" id="invoiceProcessingOverview">
    <div class="d-flex flex-column flex-lg-row justify-content-between align-items-lg-center gap-3 mb-3">
      <div>
        <h3 class="h5 mb-1">Behandlede internetfakturaer</h3>
        <div class="internet-mini">GlobalConnect-fakturaer, oprettede/opdaterede forbindelser, IP-ranges og behandlingsfejl.</div>
      </div>
      <div class="d-flex gap-2">
        <span class="internet-mini align-self-center" id="invoiceReconcileFeedback" role="status"></span>
        <select class="form-select form-select-sm" id="invoiceSyncStatusFilter" onchange="loadInvoiceSyncRuns()">
          <option value="">Alle resultater</option>
          <option value="success">Gennemført</option>
          <option value="warning">Kræver kontrol</option>
          <option value="error">Fejl</option>
          <option value="skipped">Sprunget over</option>
          <option value="not_logged">Ældre uden detaljer</option>
        </select>
        <button class="btn btn-sm btn-outline-primary" id="invoiceReconcileBtn" type="button" onclick="reconcileInvoiceSyncRuns()"><i class="bi bi-arrow-clockwise me-1"></i>Genkontrollér</button>
        <button class="btn btn-sm btn-outline-secondary" type="button" onclick="loadInvoiceSyncRuns()"><i class="bi bi-arrow-repeat me-1"></i>Opdater</button>
      </div>
    </div>
    <div class="row g-3 mb-3">
      <div class="col-6 col-xl-3"><div class="internet-kpi"><div class="internet-kpi-label">Fakturaer</div><div class="internet-kpi-value" id="invoiceMetricTotal">0</div></div></div>
      <div class="col-6 col-xl-3"><div class="internet-kpi"><div class="internet-kpi-label">Gennemført</div><div class="internet-kpi-value text-success" id="invoiceMetricSuccess">0</div></div></div>
      <div class="col-6 col-xl-3"><div class="internet-kpi"><div class="internet-kpi-label">Kræver kontrol</div><div class="internet-kpi-value text-warning" id="invoiceMetricWarnings">0</div></div></div>
      <div class="col-6 col-xl-3"><div class="internet-kpi"><div class="internet-kpi-label">Fejl</div><div class="internet-kpi-value text-danger" id="invoiceMetricErrors">0</div></div></div>
    </div>
    <div class="table-responsive">
      <table class="table table-sm align-middle mb-0">
        <thead class="table-light"><tr><th>Faktura</th><th>Behandlet</th><th>Resultat</th><th>Forbindelser</th><th>IP-ranges</th><th>Fejl / bemærkning</th></tr></thead>
        <tbody id="invoiceSyncTableBody"><tr><td colspan="6" class="text-muted py-4">Indlæser fakturabehandling…</td></tr></tbody>
      </table>
    </div>
  </div>
  </div>

<div class="modal fade" id="quickSetupModal" tabindex="-1" aria-hidden="true">
  <div class="modal-dialog modal-lg modal-dialog-scrollable">
    <div class="modal-content border-0 shadow-lg">
      <div class="modal-header">
        <div><div class="small text-uppercase text-muted fw-semibold">Hurtig oprettelse</div><h5 class="modal-title mb-0">Forbindelse og abonnement</h5></div>
        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
      </div>
      <div class="modal-body">
        <div class="quick-type-grid mb-3">
          <button class="quick-type-choice" type="button" data-quick-type="physical" onclick="selectQuickSetupType('physical')"><div class="fw-bold"><i class="bi bi-router me-2"></i>Fysisk forbindelse</div><div class="small text-muted mt-1">En direkte forbindelse fra en internetleverandør</div></button>
          <button class="quick-type-choice" type="button" data-quick-type="shared" onclick="selectQuickSetupType('shared')"><div class="fw-bold"><i class="bi bi-share me-2"></i>Delefiber / hovedforbindelse</div><div class="small text-muted mt-1">BMC Networks ejer fiberen, og den kan deles til flere kunder</div></button>
          <button class="quick-type-choice" type="button" data-quick-type="bmcnet" onclick="selectQuickSetupType('bmcnet')"><div class="fw-bold"><i class="bi bi-diagram-3 me-2"></i>BMCnet (delefiber)</div><div class="small text-muted mt-1">En kundeforbindelse under en delt BMC-hovedforbindelse</div></button>
        </div>
        <div class="alert alert-info mb-0" id="quickTypeHint">Vælg først hvilken type forbindelse du vil oprette.</div>
        <div class="row g-3 d-none mt-1" id="quickSetupFields">
          <div class="col-12"><div class="fw-semibold">1. Kunde</div></div>
          <div class="col-12" id="quickCustomerWrap">
            <input class="form-control" id="quickCustomerLookup" placeholder="Søg kundenavn eller CVR…" autocomplete="off">
            <input type="hidden" id="quickCustomerId">
            <div class="quick-customer-results d-none" id="quickCustomerResults"></div>
          </div>
          <div class="col-12 d-none" id="quickOwnerWrap"><div class="alert alert-success mb-0"><i class="bi bi-building-check me-2"></i><strong>Ejer: BMC Networks</strong> · forbindelsen markeres som delt hovedfiber.</div></div>
          <div class="col-12 quick-subscription-field"><hr class="my-1"><div class="fw-semibold">2. Abonnement</div></div>
          <div class="col-md-8 quick-subscription-field"><label class="form-label">Internetprodukt</label><select class="form-select" id="quickProduct"><option value="">Vælg internetprodukt…</option></select></div>
          <div class="col-md-4 quick-subscription-field"><label class="form-label">Pris pr. periode</label><input class="form-control" id="quickPrice" type="number" min="0" step="0.01"></div>
          <div class="col-md-4 quick-subscription-field"><label class="form-label">Startdato</label><input class="form-control" id="quickStartDate" type="date"></div>
          <div class="col-md-4 quick-subscription-field"><label class="form-label">Interval</label><select class="form-select" id="quickInterval"><option value="monthly">Månedlig</option><option value="quarterly">Kvartalsvis</option><option value="yearly">Årlig</option></select></div>
          <div class="col-md-4 quick-subscription-field"><label class="form-label">Fakturadag</label><input class="form-control" id="quickBillingDay" type="number" min="1" max="31" value="1"></div>
          <div class="col-12"><hr class="my-1"><div class="fw-semibold" id="quickConnectionStepTitle">3. Forbindelse</div></div>
          <div class="col-12 d-none" id="quickSharedHeadWrap"><label class="form-label">Delt hovedforbindelse</label><select class="form-select" id="quickSharedHead"><option value="">Vælg hovedforbindelse…</option></select><div class="small mt-1" id="quickSharedHeadSuggestion">Skriv installationsadressen, så foreslår systemet en hovedforbindelse.</div></div>
          <div class="col-12" id="quickConnectionModeWrap"><select class="form-select" id="quickConnectionMode" onchange="toggleQuickConnectionMode()"><option value="new">Opret ny forbindelse</option><option value="existing">Knyt en eksisterende forbindelse</option></select></div>
          <div class="col-12 d-none" id="quickExistingWrap"><select class="form-select" id="quickExistingConnection"><option value="">Vælg forbindelse…</option></select></div>
          <div class="col-md-6 quick-new-field"><label class="form-label">Navn</label><input class="form-control" id="quickConnectionName" placeholder="Fx Internet - Kundenavn"></div>
          <div class="col-md-6 quick-new-field quick-physical-field"><label class="form-label">Leverandør</label><select class="form-select" id="quickVendor"><option value="">Vælg leverandør…</option></select></div>
          <div class="col-md-6 quick-new-field quick-physical-field"><label class="form-label">Kredsløbsnummer</label><input class="form-control" id="quickCircuit"></div>
          <div class="col-md-6 quick-new-field"><label class="form-label">Installationsadresse</label><input class="form-control" id="quickAddress"></div>
          <div class="col-12" id="quickAdvancedConnectionFields"><details class="border rounded p-3"><summary class="fw-semibold">Avanceret — valgfrit</summary><div class="row g-2 mt-2"><div class="col-md-4"><label class="form-label">Teknologi</label><input class="form-control" id="quickTechnology" placeholder="Fiber"></div><div class="col-md-4"><label class="form-label">Download Mbps</label><input class="form-control" id="quickDownload" type="number"></div><div class="col-md-4"><label class="form-label">Upload Mbps</label><input class="form-control" id="quickUpload" type="number"></div><div class="col-md-4"><label class="form-label">Kost pr. måned</label><input class="form-control" id="quickCost" type="number" min="0" step="0.01"></div><div class="col-md-8"><label class="form-label">Noter</label><input class="form-control" id="quickNotes"></div></div></details></div>
          <div class="col-12 d-none" id="quickBmcnetNotesWrap"><label class="form-label">Noter <span class="text-muted">(valgfrit)</span></label><input class="form-control" id="quickBmcnetNotes"></div>
          <div class="col-12"><div class="alert alert-light border mb-0" id="quickSetupSummary">Vælg kunde og produkt. Systemet opretter en abonnementssag, et abonnement som kladde og forbinder det hele.</div></div>
        </div>
      </div>
      <div class="modal-footer"><span class="small text-muted me-auto" id="quickSetupFeedback"></span><button class="btn btn-outline-secondary" type="button" data-bs-dismiss="modal">Luk</button><button class="btn btn-primary d-none" id="quickSetupSubmit" type="button" onclick="submitQuickSetup()"><i class="bi bi-check2-circle me-1"></i>Opret forbindelse og abonnement</button></div>
    </div>
  </div>
</div>

<div class="modal fade" id="ipNordicImportModal" tabindex="-1" aria-hidden="true">
  <div class="modal-dialog modal-xl modal-dialog-scrollable">
    <div class="modal-content">
      <div class="modal-header">
        <div>
          <h5 class="modal-title mb-1">Importér IP Nordic-forbindelser</h5>
          <div class="internet-mini">Excel-filen kontrolleres før import. Kunder tilknyttes aldrig automatisk.</div>
        </div>
        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
      </div>
      <div class="modal-body">
        <label class="form-label fw-semibold" for="ipNordicFileInput">IP Nordic Excel-fil (.xlsx)</label>
        <input class="form-control" id="ipNordicFileInput" type="file" accept=".xlsx,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet">
        <div class="small mt-2" id="ipNordicImportFeedback" role="status"></div>
        <div class="table-responsive mt-3 d-none" id="ipNordicPreviewWrap">
          <table class="table table-sm align-middle">
            <thead><tr><th>Handling</th><th>Rapporteret firma</th><th>Adresse</th><th>Start</th><th class="text-end">Kost</th><th class="text-end">Salg</th></tr></thead>
            <tbody id="ipNordicPreviewBody"></tbody>
          </table>
        </div>
      </div>
      <div class="modal-footer">
        <button class="btn btn-outline-secondary" type="button" data-bs-dismiss="modal">Luk</button>
        <button class="btn btn-outline-primary" id="ipNordicPreviewBtn" type="button" onclick="previewIpNordicImport()">Kontrollér fil</button>
        <button class="btn btn-primary d-none" id="ipNordicCommitBtn" type="button" onclick="commitIpNordicImport()">Importér nye forbindelser</button>
      </div>
    </div>
  </div>
</div>

<div class="modal fade" id="invoiceReviewModal" tabindex="-1" aria-hidden="true">
  <div class="modal-dialog modal-xl modal-dialog-scrollable">
    <div class="modal-content">
      <div class="modal-header">
        <div><h5 class="modal-title mb-1">Kontrollér internetfaktura <span id="invoiceReviewNumber"></span></h5><div class="internet-mini" id="invoiceReviewSummary"></div></div>
        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
      </div>
      <div class="modal-body">
        <div class="alert alert-info small">Vælg en eksisterende forbindelse, opret en separat afventende forbindelse, eller ignorér linjen med en begrundelse. Fakturaen markeres gennemført, når alle kontrollinjer er afklaret.</div>
        <div class="form-check form-switch mb-3">
          <input class="form-check-input" type="checkbox" id="showResolvedInvoiceLines" onchange="toggleResolvedInvoiceLines()">
          <label class="form-check-label" for="showResolvedInvoiceLines">Vis allerede løste linjer</label>
        </div>
        <div id="invoiceReviewLines"></div>
      </div>
    </div>
  </div>
</div>

<script>
  let allConnections = [];
  let invoiceSyncItems = [];
  let activeTab = 'all';
  let subscriptionOptions = [];
  let quickCustomerOptions = [];
  let quickProductOptions = [];
  let quickCustomerTimer = null;
  let quickSetupType = null;
  let quickSharedHeadOptions = [];
  let ipNordicPreview = null;
  let allocationSuggestionsByConnection = new Map();

  function escapeHtml(value) {
    return String(value ?? '').replace(/[&<>'"]/g, (char) => ({
      '&': '&amp;', '<': '&lt;', '>': '&gt;', "'": '&#39;', '"': '&quot;'
    }[char]));
  }

  async function runIpNordicImport(commit) {
    const input = document.getElementById('ipNordicFileInput');
    const feedback = document.getElementById('ipNordicImportFeedback');
    const previewButton = document.getElementById('ipNordicPreviewBtn');
    const commitButton = document.getElementById('ipNordicCommitBtn');
    const file = input.files?.[0];
    if (!file) {
      feedback.className = 'small mt-2 text-danger';
      feedback.textContent = 'Vælg først en Excel-fil.';
      return;
    }
    const formData = new FormData();
    formData.append('file', file);
    formData.append('commit', commit ? 'true' : 'false');
    previewButton.disabled = true;
    commitButton.disabled = true;
    feedback.className = 'small mt-2 text-muted';
    feedback.textContent = commit ? 'Importerer...' : 'Kontrollerer filen...';
    try {
      const response = await fetch('/api/v1/internet-connections/import/ip-nordic', { method: 'POST', body: formData });
      const payload = await response.json().catch(() => ({}));
      if (!response.ok) throw new Error(payload.detail || 'Importen kunne ikke gennemføres.');
      ipNordicPreview = payload;
      document.getElementById('ipNordicPreviewWrap').classList.remove('d-none');
      document.getElementById('ipNordicPreviewBody').innerHTML = (payload.items || []).map((item) => `
        <tr>
          <td>${item.action === 'skip' ? `<span class="badge text-bg-secondary">Findes #${item.existing_connection_id}</span>` : '<span class="badge text-bg-success">Ny</span>'}</td>
          <td>${escapeHtml(item.reported_company || '-')}<div class="internet-mini">Nr. ${escapeHtml(item.company_number || '-')} · ${Number(item.line_count || 0)} linjer</div></td>
          <td>${escapeHtml(item.address || '-')}</td>
          <td>${escapeHtml(item.start_date || '-')}</td>
          <td class="text-end">${formatDKK(item.monthly_cost)}</td>
          <td class="text-end">${formatDKK(item.sales_price)}</td>
        </tr>`).join('');
      feedback.className = 'small mt-2 text-success';
      feedback.textContent = commit
        ? `${payload.created_count} forbindelser oprettet, ${payload.skipped_count} eksisterende sprunget over.`
        : `${payload.create_count} nye og ${payload.existing_count} eksisterende forbindelser fundet.`;
      commitButton.classList.toggle('d-none', commit || payload.create_count === 0);
      if (commit) await loadInternetPage();
    } catch (error) {
      feedback.className = 'small mt-2 text-danger';
      feedback.textContent = error.message || 'Importen kunne ikke gennemføres.';
    } finally {
      previewButton.disabled = false;
      commitButton.disabled = false;
    }
  }

  function previewIpNordicImport() { return runIpNordicImport(false); }
  function commitIpNordicImport() { return runIpNordicImport(true); }

  function formatDKK(value) {
    return Number(value || 0).toLocaleString('da-DK', { style: 'currency', currency: 'DKK', minimumFractionDigits: 0 });
  }

  function formatSpeed(item) {
    const down = Number(item.download_mbps || 0);
    const up = Number(item.upload_mbps || 0);
    const speed = Number(item.speed_mbps || 0);
    if (down || up) return `${down || 0}/${up || 0} Mbps`;
    if (speed) return `${speed} Mbps`;
    return '-';
  }

  function statusBadge(status) {
    const value = String(status || 'inactive').toLowerCase();
    const labelMap = {
      active: 'Aktiv',
      planned: 'Planlagt',
      pending: 'Afventer',
      inactive: 'Inaktiv',
      terminated: 'Opsagt',
      cancelled: 'Annulleret',
    };
    return `<span class="internet-status ${value}">${labelMap[value] || value}</span>`;
  }

  function allocationBadge(item) {
    const label = item.allocation_model_label || (item.allocation_model === 'shared' ? 'Delt' : 'Dedikeret');
    return `<span class="internet-tag">${escapeHtml(label)}</span>`;
  }

  function valueBadge(item) {
    const label = item.value_type_label || 'Anden';
    return `<span class="internet-tag">${escapeHtml(label)}</span>`;
  }

  function currentTabDescription() {
    if (activeTab === 'shared') return ' i delte hovedforbindelser';
    if (activeTab === 'bmcnet') return ' i BMCnet';
    if (activeTab === 'dedicated') return ' i dedikerede forbindelser';
    if (activeTab === 'unallocated') return ' uden allokeret kunde';
    return '';
  }

  async function safeJson(response, fallback) {
    if (!response.ok) return fallback;
    try {
      return await response.json();
    } catch {
      return fallback;
    }
  }

  async function extractErrorMessage(response, fallback) {
    try {
      const payload = await response.clone().json();
      if (typeof payload?.detail === 'string' && payload.detail.trim()) return payload.detail.trim();
      if (Array.isArray(payload?.detail)) {
        const validation = payload.detail
          .map((item) => item?.msg || item?.message || '')
          .filter(Boolean)
          .join(', ');
        if (validation) return validation;
      }
    } catch (_) {}

    try {
      const text = (await response.text()).trim();
      if (text) return text;
    } catch (_) {}
    return fallback;
  }

  function escapeInvoiceText(value) {
    return String(value ?? '')
      .replaceAll('&', '&amp;')
      .replaceAll('<', '&lt;')
      .replaceAll('>', '&gt;')
      .replaceAll('"', '&quot;')
      .replaceAll("'", '&#039;');
  }

  function invoiceSyncBadge(status) {
    const labels = {
      success: 'Gennemført',
      legacy_success: 'Ældre · gennemført',
      warning: 'Kræver kontrol',
      skipped: 'Sprunget over',
      error: 'Fejl',
      not_logged: 'Ingen detaljer',
    };
    return `<span class="invoice-sync-status ${escapeInvoiceText(status)}">${labels[status] || escapeInvoiceText(status || 'Ukendt')}</span>`;
  }

  function formatInvoiceSyncDate(value) {
    if (!value) return '-';
    const date = new Date(value);
    return Number.isNaN(date.getTime()) ? escapeInvoiceText(value) : date.toLocaleString('da-DK');
  }

  function invoiceSyncMessage(item) {
    if (item.error_message) return `<div class="invoice-sync-error">${escapeInvoiceText(item.error_message)}</div>`;
    if (item.processing_status === 'warning') {
      const skipped = Number(item.skipped_lines || 0);
      const skippedItems = Array.isArray(item.result_json?.skipped_items) ? item.result_json.skipped_items : [];
      const reasons = [...new Set(skippedItems.map(entry => entry.reason).filter(Boolean))];
      return `<div class="text-warning small mb-2">${Number(item.unresolved_lines ?? skipped)} af ${skipped} linje(r) mangler kontrol${reasons.length ? `: ${escapeInvoiceText(reasons.join('; '))}` : ''}</div>${item.run_id ? `<button class="btn btn-sm btn-warning" type="button" onclick="openInvoiceReview(${Number(item.run_id)})"><i class="bi bi-check2-square me-1"></i>Kontrollér</button>` : ''}`;
    }
    if (item.processing_status === 'skipped') return '<div class="text-warning small">Fakturaen gav ingen internetdata til synkronisering.</div>';
    if (item.processing_status === 'not_logged') return '<div class="text-muted small">Ældre faktura uden gemt behandlingsresultat.</div>';
    if (item.processing_status === 'legacy_success') return '<div class="text-muted small">Fundet via eksisterende forbindelseshistorik.</div>';
    return '<div class="text-muted small">Ingen fejl registreret.</div>';
  }

  async function loadInvoiceSyncRuns() {
    const status = document.getElementById('invoiceSyncStatusFilter').value;
    const params = new URLSearchParams({limit: '200'});
    if (status) params.set('status', status);
    const body = document.getElementById('invoiceSyncTableBody');
    body.innerHTML = '<tr><td colspan="6" class="text-muted py-4">Indlæser fakturabehandling…</td></tr>';
    try {
      const response = await fetch(`/api/v1/internet-connections/invoice-sync-runs?${params.toString()}`);
      if (!response.ok) throw new Error(await extractErrorMessage(response, 'Kunne ikke hente fakturabehandling.'));
      const payload = await response.json();
      const items = Array.isArray(payload.items) ? payload.items : [];
      invoiceSyncItems = items;
      const summary = payload.summary || {};
      document.getElementById('invoiceMetricTotal').textContent = String(summary.total || 0);
      document.getElementById('invoiceMetricSuccess').textContent = String(summary.success || 0);
      document.getElementById('invoiceMetricWarnings').textContent = String(summary.warnings || 0);
      document.getElementById('invoiceMetricErrors').textContent = String(summary.errors || 0);
      if (!items.length) {
        body.innerHTML = '<tr><td colspan="6" class="text-muted py-4">Ingen fakturaer matcher filteret.</td></tr>';
        return;
      }
      body.innerHTML = items.map(item => `
        <tr>
          <td><div class="fw-semibold">${escapeInvoiceText(item.invoice_number || '-')}</div><div class="internet-mini">${escapeInvoiceText(item.vendor_name || 'GlobalConnect')} · ${escapeInvoiceText(item.invoice_date || '-')}</div></td>
          <td>${formatInvoiceSyncDate(item.processed_at)}</td>
          <td>${invoiceSyncBadge(item.processing_status)}</td>
          <td><strong>${Number(item.connections_synced || item.legacy_connection_count || 0)}</strong><div class="internet-mini">${Number(item.connections_created || 0)} nye · ${Number(item.connections_updated || 0)} opdateret</div></td>
          <td><strong>${Number(item.ip_ranges_synced || 0)}</strong></td>
          <td>${invoiceSyncMessage(item)}</td>
        </tr>
      `).join('');
    } catch (error) {
      body.innerHTML = `<tr><td colspan="6" class="text-danger py-4">${escapeInvoiceText(error.message || 'Kunne ikke indlæse fakturabehandling.')}</td></tr>`;
    }
  }

  async function reconcileInvoiceSyncRuns() {
    const button = document.getElementById('invoiceReconcileBtn');
    const feedback = document.getElementById('invoiceReconcileFeedback');
    button.disabled = true;
    feedback.className = 'internet-mini align-self-center text-muted';
    feedback.textContent = 'Genkontrollerer…';
    try {
      const response = await fetch('/api/v1/internet-connections/invoice-sync-runs/reconcile', { method: 'POST' });
      if (!response.ok) throw new Error(await extractErrorMessage(response, 'Genkontrollen fejlede.'));
      const payload = await response.json();
      feedback.className = 'internet-mini align-self-center text-success';
      feedback.textContent = `${Number(payload.resolved_lines || 0)} linjer løst`;
      await loadInvoiceSyncRuns();
    } catch (error) {
      feedback.className = 'internet-mini align-self-center text-danger';
      feedback.textContent = error.message || 'Genkontrollen fejlede.';
    } finally {
      button.disabled = false;
    }
  }

  function reviewConnectionOptions(selectedId = '') {
    return '<option value="">Vælg forbindelse…</option>' + allConnections
      .filter(item => String(item.provider || '').toLowerCase().includes('globalconnect'))
      .map(item => `<option value="${Number(item.id)}" ${String(item.id) === String(selectedId) ? 'selected' : ''}>${escapeInvoiceText(item.circuit_number || item.name || `#${item.id}`)} · ${escapeInvoiceText(item.address || '-')}</option>`)
      .join('');
  }

  function toggleResolvedInvoiceLines() {
    const show = document.getElementById('showResolvedInvoiceLines').checked;
    document.querySelectorAll('#invoiceReviewLines .resolved-review-line').forEach((element) => {
      element.classList.toggle('d-none', !show);
    });
  }

  async function openInvoiceReview(runId) {
    const summaryItem = invoiceSyncItems.find(entry => Number(entry.run_id) === Number(runId));
    if (!summaryItem) return;
    const linesWrap = document.getElementById('invoiceReviewLines');
    linesWrap.innerHTML = '<div class="text-muted py-4">Henter kontrollinjer…</div>';
    bootstrap.Modal.getOrCreateInstance(document.getElementById('invoiceReviewModal')).show();
    const response = await fetch(`/api/v1/internet-connections/invoice-sync-runs/${runId}`);
    if (!response.ok) {
      linesWrap.innerHTML = `<div class="text-danger py-4">${escapeInvoiceText(await extractErrorMessage(response, 'Kunne ikke hente kontrollinjer.'))}</div>`;
      return;
    }
    const detail = await response.json();
    const item = { ...summaryItem, ...detail };
    if (!item) return;
    const skippedItems = Array.isArray(item.result_json?.skipped_items) ? item.result_json.skipped_items : [];
    const decisions = Array.isArray(item.review_decisions) ? item.review_decisions : [];
    const decisionsByLine = new Map(decisions.map(decision => [Number(decision.line_number), decision]));
    document.getElementById('invoiceReviewNumber').textContent = item.invoice_number || '-';
    document.getElementById('invoiceReviewSummary').textContent = `${Number(item.resolved_lines || 0)} løst · ${Number(item.unresolved_lines || 0)} mangler`;
    document.getElementById('showResolvedInvoiceLines').checked = false;
    const groups = skippedItems.reduce((result, line) => {
      const reason = line.reason || 'Anden kontrol';
      (result[reason] ||= []).push(line);
      return result;
    }, {});
    document.getElementById('invoiceReviewLines').innerHTML = Object.entries(groups).map(([reason, lines]) => `
      <section class="mb-4">
        <h6 class="mb-2">${escapeInvoiceText(reason)} <span class="badge bg-secondary">${lines.length}</span></h6>
        <div class="vstack gap-2">
          ${lines.map(line => {
            const decision = decisionsByLine.get(Number(line.line_number));
            return `<div class="border rounded p-3 ${decision ? 'bg-light opacity-75 resolved-review-line d-none' : ''}">
              <div class="d-flex flex-column flex-lg-row justify-content-between gap-3">
                <div class="flex-grow-1">
                  <div class="fw-semibold">Linje ${Number(line.line_number)} · ${escapeInvoiceText(line.description || '-')}</div>
                  <div class="internet-mini">Reference: ${escapeInvoiceText(line.provider_reference || '-')} · Adresse: ${escapeInvoiceText(line.service_address || '-')}</div>
                  ${line.ip_address ? `<div class="internet-mini">IP-range: ${escapeInvoiceText(line.ip_address)}</div>` : ''}
                  ${decision ? `<div class="text-success small mt-2"><i class="bi bi-check-circle me-1"></i>Løst: ${escapeInvoiceText(decision.action)}${decision.note ? ` · ${escapeInvoiceText(decision.note)}` : ''}</div>` : ''}
                </div>
                ${decision ? '' : `<div style="min-width:340px;">
                  <select class="form-select form-select-sm mb-2" id="reviewConnection-${runId}-${Number(line.line_number)}">${reviewConnectionOptions()}</select>
                  <input class="form-control form-control-sm mb-2" id="reviewNote-${runId}-${Number(line.line_number)}" placeholder="Begrundelse / note">
                  <div class="d-flex flex-wrap gap-2">
                    <button class="btn btn-sm btn-primary" type="button" onclick="submitInvoiceReview(${runId}, ${Number(line.line_number)}, 'link_existing')">Brug valgt</button>
                    <button class="btn btn-sm btn-outline-primary" type="button" onclick="submitInvoiceReview(${runId}, ${Number(line.line_number)}, 'create_separate')">Opret separat</button>
                    <button class="btn btn-sm btn-outline-secondary" type="button" onclick="submitInvoiceReview(${runId}, ${Number(line.line_number)}, 'ignore')">Ignorer</button>
                  </div>
                </div>`}
              </div>
            </div>`;
          }).join('')}
        </div>
      </section>
    `).join('') || '<div class="text-success">Alle kontrollinjer er løst.</div>';
  }

  async function submitInvoiceReview(runId, lineNumber, action) {
    const connectionId = document.getElementById(`reviewConnection-${runId}-${lineNumber}`)?.value || null;
    const note = document.getElementById(`reviewNote-${runId}-${lineNumber}`)?.value.trim() || '';
    if (action === 'link_existing' && !connectionId) {
      alert('Vælg først en eksisterende forbindelse.');
      return;
    }
    if (action === 'ignore' && !note) {
      alert('Skriv en begrundelse for at ignorere linjen.');
      return;
    }
    if (action === 'create_separate' && !confirm('Opret en separat, afventende forbindelse for denne linje?')) return;
    const response = await fetch(`/api/v1/internet-connections/invoice-sync-runs/${runId}/review`, {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({
        line_number: lineNumber,
        action,
        connection_id: connectionId ? Number(connectionId) : null,
        note: note || null,
      }),
    });
    if (!response.ok) {
      alert(await extractErrorMessage(response, 'Kontrollen kunne ikke gemmes.'));
      return;
    }
    await loadInvoiceSyncRuns();
    openInvoiceReview(runId);
  }

  async function loadInternetPage() {
    const search = document.getElementById('searchInput').value.trim();
    const provider = document.getElementById('providerFilter').value.trim();
    const status = document.getElementById('statusFilter').value;
    const valueType = document.getElementById('valueTypeFilter').value;
    const params = new URLSearchParams();
    if (search) params.set('q', search);
    if (provider) params.set('provider', provider);
    if (status) params.set('status', status);
    if (valueType) params.set('value_type', valueType);
    if (activeTab === 'shared') params.set('shared_only', 'true');
    if (activeTab === 'bmcnet') params.set('bmcnet_only', 'true');
    if (activeTab === 'dedicated') {
      params.set('allocation_model', 'dedicated');
      params.set('allocated_only', 'true');
    }
    if (activeTab === 'unallocated') params.set('unallocated_only', 'true');

    try {
      const connectionsResponse = await fetch(`/api/v1/internet-connections?${params.toString()}`);

      const connections = await safeJson(connectionsResponse, []);
      allConnections = Array.isArray(connections) ? connections : [];
      allocationSuggestionsByConnection = new Map();
      if (activeTab === 'unallocated') {
        const allocationResponse = await fetch('/api/v1/internet-connections/allocation-overview');
        const allocationPayload = await safeJson(allocationResponse, { items: [] });
        allocationSuggestionsByConnection = new Map(
          (allocationPayload.items || []).map((entry) => [Number(entry.connection_id), entry])
        );
      }
      const total = allConnections.length;
      const active = allConnections.filter((item) => item.status === 'active').length;
      const pending = allConnections.filter((item) => item.status === 'pending').length;
      const sharedHeads = allConnections.filter((item) => item.is_shared_head).length;
      const bmcnetConnections = allConnections.filter((item) => item.is_bmcnet_connection).length;
      const margin = allConnections.reduce((sum, item) => sum + Number(item.margin_amount || 0), 0);

      document.getElementById('metricTotal').textContent = String(total);
      document.getElementById('metricActive').textContent = `${active} / ${pending}`;
      const focusMetric = activeTab === 'bmcnet'
        ? ['BMCnet', bmcnetConnections]
        : activeTab === 'dedicated'
          ? ['Dedikerede', total]
          : activeTab === 'unallocated'
            ? ['Uden kunde', total]
            : ['Delte hoveder', sharedHeads];
      document.getElementById('metricSharedLabel').textContent = focusMetric[0];
      document.getElementById('metricShared').textContent = String(focusMetric[1]);
      document.getElementById('metricMargin').textContent = formatDKK(margin);

      renderConnections(allConnections);
    } catch (error) {
      document.getElementById('connectionsTableBody').innerHTML = '<tr><td colspan="7" class="text-danger py-4">Kunne ikke indlæse internetforbindelser.</td></tr>';
      document.getElementById('pageSummaryText').textContent = 'Indlæsning fejlede.';
    }
  }

  function renderConnections(connections) {
    const body = document.getElementById('connectionsTableBody');
    document.getElementById('pageSummaryText').textContent = `${connections.length} forbindelser vist${currentTabDescription()}`;

    if (!connections.length) {
      body.innerHTML = '<tr><td colspan="7" class="text-muted py-4">Ingen forbindelser matcher filtrene.</td></tr>';
      return;
    }

    body.innerHTML = connections.map((item) => {
      const allocation = allocationSuggestionsByConnection.get(Number(item.id));
      const uniqueSuggestion = allocation?.unique_suggestion;
      const suggestionCount = Number(allocation?.suggestions?.length || 0);
      const isOwnedSharedFiber = Boolean(item.is_shared_head && (item.value_type === 'delefiber' || item.is_manual_shared));
      return `
      <tr class="internet-row" onclick="window.location.href='/economy/internet-connections/${item.id}'">
        <td>
          <div class="fw-semibold">${escapeHtml(item.name || '-')}</div>
          <div class="mb-1">${allocationBadge(item)}${valueBadge(item)}</div>
          <div class="internet-mini">${escapeHtml(item.address || '-')}</div>
          ${item.parent_name ? `<div class="internet-mini"><i class="bi bi-diagram-2 me-1"></i>Under ${escapeHtml(item.parent_name)}</div>` : ''}
          ${item.is_shared_head ? `<div class="internet-mini"><i class="bi bi-diagram-3 me-1"></i>${Number(item.bmcnet_child_count || 0)} BMCnet-kunder · ${formatDKK(item.bmcnet_child_sales_price || 0)} salg</div>` : ''}
        </td>
        <td>
          <div>${escapeHtml(isOwnedSharedFiber ? 'BMC Networks' : (item.customer_name || '-'))}</div>
          <div class="internet-mini">${isOwnedSharedFiber ? 'Ejer · delt hovedfiber' : `Kunde-ID: ${item.customer_id || '-'}`}</div>
          ${!isOwnedSharedFiber && uniqueSuggestion ? `<button class="btn btn-sm btn-outline-success mt-1" type="button" onclick="event.stopPropagation(); assignSuggestedCustomer(${Number(item.id)}, ${Number(uniqueSuggestion.customer_id)})"><i class="bi bi-person-check me-1"></i>${escapeHtml(uniqueSuggestion.customer_name || 'Tildel foreslået kunde')}</button>` : ''}
          ${!isOwnedSharedFiber && !uniqueSuggestion && suggestionCount > 1 ? `<div class="internet-mini text-warning mt-1">${suggestionCount} adresseforslag · vælg på forbindelsen</div>` : ''}
          ${isOwnedSharedFiber ? '' : item.sla_subscription_id
            ? `<div class="internet-mini ${Number(item.sla_price || 0) > 0 && item.sla_status === 'active' ? 'text-success' : 'text-warning'} fw-semibold"><i class="bi bi-shield-check me-1"></i>${escapeHtml(item.sla_product_name || 'SLA')} · ${formatDKK(item.sla_price || 0)}${Number(item.sla_price || 0) > 0 ? '' : ' · Kontrollér pris'}${item.sla_status === 'active' ? '' : ' · Ikke aktiv'}</div>`
            : `<div class="internet-mini text-danger fw-semibold"><i class="bi bi-shield-exclamation me-1"></i>Ingen SLA-aftale</div>`}
        </td>
        <td>
          <div>${escapeHtml(item.provider || '-')}</div>
          <div class="internet-mini">${escapeHtml(item.circuit_number || 'Intet kredsløb')}</div>
          ${item.subscription_number ? `<div class="internet-mini">Abonnement ${escapeHtml(item.subscription_number)} · ${escapeHtml(item.subscription_product_name || '-')}</div>` : (item.value_label ? `<div class="internet-mini">${escapeHtml(item.value_label)}</div>` : '')}
        </td>
        <td>
          <div>${formatSpeed(item)}</div>
          <div class="internet-mini">Ranges ${Number(item.ip_range_count || 0)} · IP i brug: ${Number(item.in_use_ip_addresses || 0)} / ${Number(item.total_ip_addresses || 0)}</div>
          ${item.is_shared_head ? `<div class="internet-mini">BMCnet-IP i brug: ${Number(item.bmcnet_child_ip_count || 0)}</div>` : ''}
        </td>
        <td>
          <div>${formatDKK(item.sales_price || 0)}</div>
          <div class="internet-mini">Kost ${formatDKK(item.monthly_cost || 0)} · DB ${formatDKK(item.margin_amount || 0)}</div>
        </td>
        <td>${statusBadge(item.status)}</td>
        <td class="text-end">
          <a href="/economy/internet-connections/${item.id}" class="btn btn-sm btn-outline-primary" onclick="event.stopPropagation()">
            Åbn
          </a>
        </td>
      </tr>
    `}).join('');
  }

  async function assignSuggestedCustomer(connectionId, customerId) {
    const response = await fetch(`/api/v1/internet-connections/${connectionId}`, {
      method: 'PUT', headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ customer_id: customerId }),
    });
    if (!response.ok) {
      document.getElementById('pageSummaryText').textContent = await extractErrorMessage(response, 'Kunden kunne ikke tildeles.');
      return;
    }
    await loadInternetPage();
  }

  async function submitConnectionForm() {
    const feedback = document.getElementById('createConnectionFeedback');
    const saveButton = document.querySelector('#createConnectionBlock button.btn.btn-primary');
    const payload = {
      name: document.getElementById('connectionNameInput').value.trim(),
      vendor_id: Number(document.getElementById('connectionVendorInput').value || 0) || null,
      customer_id: Number(document.getElementById('connectionCustomerIdInput').value || 0) || null,
      circuit_number: document.getElementById('connectionCircuitInput').value.trim() || null,
      address: document.getElementById('connectionAddressInput').value.trim() || null,
      technology: document.getElementById('connectionTechnologyInput').value.trim() || null,
      download_mbps: Number(document.getElementById('connectionDownloadInput').value || 0) || null,
      upload_mbps: Number(document.getElementById('connectionUploadInput').value || 0) || null,
      monthly_cost: Number(document.getElementById('connectionPurchaseInput').value || 0),
      sales_price: Number(document.getElementById('connectionSalesInput').value || 0),
      status: document.getElementById('connectionStatusInput').value || 'active',
      notes: document.getElementById('connectionNotesInput').value.trim() || null,
      connection_type: 'fiber',
      allocation_model: document.getElementById('connectionAllocationInput').value || 'dedicated',
      value_type: document.getElementById('connectionValueTypeInput').value || 'other',
      value_label: document.getElementById('connectionValueLabelInput').value.trim() || null,
      subscription_id: Number(document.getElementById('connectionSubscriptionIdInput').value || 0) || null,
      is_manual_shared: document.getElementById('connectionAllocationInput').value === 'shared'
        && document.getElementById('connectionValueTypeInput').value === 'delefiber',
    };

    if (!payload.name) {
      feedback.textContent = 'Navn er påkrævet.';
      return;
    }
    if (!payload.address) {
      feedback.textContent = 'Adresse er påkrævet.';
      return;
    }
    if (payload.value_type === 'subscription' && !payload.subscription_id) {
      feedback.textContent = 'Vælg et gyldigt abonnement.';
      return;
    }

    feedback.textContent = 'Gemmer...';
    if (saveButton) saveButton.disabled = true;
    try {
      const response = await fetch('/api/v1/internet-connections', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(payload),
      });

      if (!response.ok) {
        feedback.textContent = await extractErrorMessage(response, 'Kunne ikke gemme forbindelsen.');
        return;
      }

      feedback.textContent = 'Forbindelse oprettet.';
      [
        'connectionNameInput',
        'connectionVendorInput',
        'connectionCustomerIdInput',
        'connectionCircuitInput',
        'connectionAddressInput',
        'connectionTechnologyInput',
        'connectionDownloadInput',
        'connectionUploadInput',
        'connectionPurchaseInput',
        'connectionSalesInput',
        'connectionNotesInput',
      ].forEach((id) => {
        const field = document.getElementById(id);
        if (field) field.value = '';
      });
      document.getElementById('connectionStatusInput').value = 'active';
      document.getElementById('connectionAllocationInput').value = 'dedicated';
      document.getElementById('connectionValueTypeInput').value = 'other';
      document.getElementById('connectionValueLabelInput').value = 'Mangler klassifikation';
      document.getElementById('connectionSubscriptionInput').value = '';
      document.getElementById('connectionSubscriptionIdInput').value = '';
      toggleCreateValueFields();
      await loadInternetPage();
    } catch (error) {
      feedback.textContent = error?.message || 'Netværksfejl under gem.';
    } finally {
      if (saveButton) saveButton.disabled = false;
    }
  }

  function resetFilters() {
    document.getElementById('searchInput').value = '';
    document.getElementById('providerFilter').value = '';
    document.getElementById('statusFilter').value = '';
    document.getElementById('valueTypeFilter').value = '';
    loadInternetPage();
  }

  function setActiveTab(tab) {
    activeTab = tab;
    document.getElementById('tabAll').classList.toggle('active', tab === 'all');
    document.getElementById('tabShared').classList.toggle('active', tab === 'shared');
    document.getElementById('tabBmcnet').classList.toggle('active', tab === 'bmcnet');
    document.getElementById('tabDedicated').classList.toggle('active', tab === 'dedicated');
    document.getElementById('tabUnallocated').classList.toggle('active', tab === 'unallocated');
    document.getElementById('tabInvoices').classList.toggle('active', tab === 'invoices');
    const invoiceMode = tab === 'invoices';
    document.getElementById('connectionsMetrics').classList.toggle('d-none', invoiceMode);
    document.getElementById('connectionsOverview').classList.toggle('d-none', invoiceMode);
    document.getElementById('createConnectionBlock').classList.add('collapse');
    document.getElementById('createConnectionBlock').classList.remove('show');
    document.getElementById('newConnectionBtn').classList.toggle('d-none', invoiceMode);
    document.getElementById('invoiceProcessingOverview').classList.toggle('d-none', !invoiceMode);
    if (invoiceMode) loadInvoiceSyncRuns();
    else loadInternetPage();
  }

  function refreshActiveTab() {
    if (activeTab === 'invoices') return loadInvoiceSyncRuns();
    return loadInternetPage();
  }

  function toggleCreateValueFields() {
    const valueType = document.getElementById('connectionValueTypeInput').value;
    document.getElementById('createValueLabelWrap').classList.toggle('d-none', valueType !== 'other');
    document.getElementById('createSubscriptionWrap').classList.toggle('d-none', valueType !== 'subscription');
  }

  function buildSubscriptionLabel(item) {
    return `${item.id} · ${item.subscription_number || '-'} · ${item.product_name || '-'} · ${item.customer_name || '-'}`;
  }

  function resolveSubscriptionId(value) {
    const raw = String(value || '').trim();
    if (!raw) return null;
    const idMatch = raw.match(/^(\d+)\b/);
    if (idMatch) return Number(idMatch[1]);
    const matched = subscriptionOptions.find((item) => buildSubscriptionLabel(item).toLowerCase() === raw.toLowerCase());
    return matched ? Number(matched.id) : null;
  }

  async function loadSubscriptionOptions() {
    try {
      const response = await fetch('/api/v1/internet-connections/subscription-options');
      subscriptionOptions = response.ok ? await response.json() : [];
    } catch (error) {
      subscriptionOptions = [];
    }
    document.getElementById('subscriptionLookupList').innerHTML = subscriptionOptions
      .map((item) => `<option value="${buildSubscriptionLabel(item)}"></option>`)
      .join('');
  }

  async function loadInternetVendors() {
    const select = document.getElementById('connectionVendorInput');
    try {
      const response = await fetch('/api/v1/vendors?is_active=true&is_internet_provider=true&limit=100');
      const vendors = response.ok ? await response.json() : [];
      select.innerHTML = '<option value="">Vælg internetleverandør</option>' + vendors
        .map((vendor) => `<option value="${vendor.id}">${escapeHtml(vendor.name)}</option>`).join('');
      const quickVendor = document.getElementById('quickVendor');
      if (quickVendor) quickVendor.innerHTML = '<option value="">Vælg leverandør…</option>' + vendors
        .map((vendor) => `<option value="${vendor.id}">${escapeHtml(vendor.name)}</option>`).join('');
    } catch (error) {
      select.innerHTML = '<option value="">Kunne ikke hente leverandører</option>';
    }
  }

  function quickCustomerLabel(item) {
    return `${item.id} · ${item.name || '-'}`;
  }

  function resolveQuickCustomerId() {
    const raw = document.getElementById('quickCustomerLookup').value.trim();
    const normalized = raw.toLowerCase();
    const match = quickCustomerOptions.find((item) =>
      quickCustomerLabel(item).toLowerCase() === normalized
      || String(item.name || '').trim().toLowerCase() === normalized
      || String(item.id) === raw
    );
    const id = match ? Number(match.id) : null;
    document.getElementById('quickCustomerId').value = id || '';
    if (match && !document.getElementById('quickConnectionName').value.trim()) {
      document.getElementById('quickConnectionName').value = `Internet - ${match.name}`;
    }
    if (match) {
      const customerAddress = [match.address, match.postal_code, match.city].filter(Boolean).join(', ');
      if (customerAddress) document.getElementById('quickAddress').value = customerAddress;
      suggestQuickSharedHead();
    }
    updateQuickSetupSummary();
    return id;
  }

  async function searchQuickCustomers(query) {
    const q = String(query || '').trim();
    const results = document.getElementById('quickCustomerResults');
    if (q.length < 2) {
      quickCustomerOptions = [];
      results.innerHTML = '';
      results.classList.add('d-none');
      return;
    }
    const response = await fetch(`/api/v1/search/customers?q=${encodeURIComponent(q)}`);
    if (document.getElementById('quickCustomerLookup').value.trim() !== q) return;
    if (response.status === 401) {
      quickCustomerOptions = [];
      results.innerHTML = '<div class="p-3 text-danger"><strong>Din session er udløbet.</strong><br><a href="/login">Log ind igen</a> og åbn derefter guiden på ny.</div>';
      results.classList.remove('d-none');
      return;
    }
    if (!response.ok) {
      quickCustomerOptions = [];
      results.innerHTML = `<div class="p-3 text-danger">Kunderne kunne ikke hentes (fejl ${response.status}).</div>`;
      results.classList.remove('d-none');
      return;
    }
    quickCustomerOptions = response.ok ? await response.json() : [];
    results.innerHTML = quickCustomerOptions.length
      ? quickCustomerOptions.map((item) => `
          <button class="quick-customer-result" type="button" data-quick-customer-id="${item.id}">
            <strong>${escapeHtml(item.name || '-')}</strong>
            <span class="small text-muted ms-2">${item.cvr_nummer ? `CVR ${escapeHtml(item.cvr_nummer)}` : `ID ${item.id}`}</span>
            ${item.address ? `<div class="small text-muted">${escapeHtml([item.address, item.postal_code, item.city].filter(Boolean).join(', '))}</div>` : ''}
          </button>`).join('')
      : '<div class="small text-muted p-3">Ingen kunder fundet</div>';
    results.classList.remove('d-none');
  }

  function selectQuickCustomer(customerId) {
    const customer = quickCustomerOptions.find((item) => Number(item.id) === Number(customerId));
    if (!customer) return;
    document.getElementById('quickCustomerLookup').value = customer.name || quickCustomerLabel(customer);
    document.getElementById('quickCustomerId').value = String(customer.id);
    document.getElementById('quickCustomerResults').classList.add('d-none');
    if (!document.getElementById('quickConnectionName').value.trim()) {
      document.getElementById('quickConnectionName').value = `Internet - ${customer.name}`;
    }
    const customerAddress = [customer.address, customer.postal_code, customer.city].filter(Boolean).join(', ');
    if (customerAddress) document.getElementById('quickAddress').value = customerAddress;
    suggestQuickSharedHead();
    updateQuickSetupSummary();
  }

  async function loadQuickProducts() {
    const response = await fetch('/api/v1/products?limit=1000&is_active=true');
    const products = response.ok ? await response.json() : [];
    quickProductOptions = products.filter((item) => {
      const text = `${item.name || ''} ${item.short_description || ''}`.toLowerCase();
      const network = item.attributes_json?.network || {};
      return network.kind === 'internet_access' || /internet|fiber|bredb/.test(text);
    });
    document.getElementById('quickProduct').innerHTML = '<option value="">Vælg internetprodukt…</option>'
      + quickProductOptions.map((item) => `<option value="${item.id}" data-price="${Number(item.sales_price || 0)}">${escapeHtml(item.name || '-')} · ${formatDKK(item.sales_price || 0)}</option>`).join('');
  }

  function selectQuickSetupType(type) {
    quickSetupType = type;
    document.querySelectorAll('[data-quick-type]').forEach((button) => button.classList.toggle('active', button.dataset.quickType === type));
    document.getElementById('quickTypeHint').classList.add('d-none');
    document.getElementById('quickSetupFields').classList.remove('d-none');
    document.getElementById('quickSetupSubmit').classList.remove('d-none');
    const isBmcnet = type === 'bmcnet';
    const isShared = type === 'shared';
    document.getElementById('quickSharedHeadWrap').classList.toggle('d-none', !isBmcnet);
    document.getElementById('quickConnectionModeWrap').classList.toggle('d-none', isBmcnet || isShared);
    document.getElementById('quickCustomerWrap').classList.toggle('d-none', isShared);
    document.getElementById('quickOwnerWrap').classList.toggle('d-none', !isShared);
    document.querySelectorAll('.quick-subscription-field').forEach((node) => node.classList.toggle('d-none', isShared));
    document.getElementById('quickConnectionStepTitle').textContent = isShared ? '2. Forbindelse' : '3. Forbindelse';
    document.getElementById('quickAdvancedConnectionFields').classList.toggle('d-none', isBmcnet);
    document.getElementById('quickBmcnetNotesWrap').classList.toggle('d-none', !isBmcnet);
    document.querySelectorAll('.quick-physical-field').forEach((node) => node.classList.toggle('d-none', isBmcnet));
    if (isBmcnet || isShared) document.getElementById('quickConnectionMode').value = 'new';
    document.getElementById('quickSetupSubmit').innerHTML = isBmcnet
      ? '<i class="bi bi-check2-circle me-1"></i>Opret BMCnet og abonnement'
      : isShared
        ? '<i class="bi bi-check2-circle me-1"></i>Opret delt hovedfiber'
        : '<i class="bi bi-check2-circle me-1"></i>Opret forbindelse og abonnement';
    toggleQuickConnectionMode();
  }

  function toggleQuickConnectionMode() {
    const existing = document.getElementById('quickConnectionMode').value === 'existing';
    document.getElementById('quickExistingWrap').classList.toggle('d-none', !existing);
    document.querySelectorAll('.quick-new-field').forEach((node) => node.classList.toggle('d-none', existing));
    document.querySelectorAll('.quick-physical-field').forEach((node) => node.classList.toggle('d-none', existing || quickSetupType === 'bmcnet'));
    updateQuickSetupSummary();
  }

  async function populateQuickConnections() {
    let connections = [];
    try {
      const response = await fetch('/api/v1/internet-connections');
      connections = response.ok ? await response.json() : [];
    } catch (error) {
      connections = allConnections;
    }
    document.getElementById('quickExistingConnection').innerHTML = '<option value="">Vælg forbindelse…</option>'
      + connections.filter((item) => !item.subscription_id).map((item) => `<option value="${item.id}">${escapeHtml(item.name || `#${item.id}`)} · ${escapeHtml(item.customer_name || 'Ingen kunde')}</option>`).join('');
    quickSharedHeadOptions = connections.filter((item) => item.is_shared_head);
    document.getElementById('quickSharedHead').innerHTML = '<option value="">Vælg hovedforbindelse…</option>'
      + quickSharedHeadOptions.map((item) => `<option value="${item.id}">${escapeHtml(item.name || `#${item.id}`)}${item.address ? ` · ${escapeHtml(item.address)}` : ''}</option>`).join('');
  }

  function normalizeQuickAddress(value) {
    return String(value || '')
      .normalize('NFD').replace(/[\u0300-\u036f]/g, '')
      .toLowerCase().replace(/[^a-z0-9]+/g, ' ').trim();
  }

  function quickEditDistance(left, right) {
    const previous = Array.from({length: right.length + 1}, (_, index) => index);
    for (let i = 1; i <= left.length; i += 1) {
      let diagonal = previous[0];
      previous[0] = i;
      for (let j = 1; j <= right.length; j += 1) {
        const above = previous[j];
        previous[j] = Math.min(
          previous[j] + 1,
          previous[j - 1] + 1,
          diagonal + (left[i - 1] === right[j - 1] ? 0 : 1),
        );
        diagonal = above;
      }
    }
    return previous[right.length];
  }

  function quickTokenSimilarity(left, right) {
    if (left === right) return 1;
    return 1 - (quickEditDistance(left, right) / Math.max(left.length, right.length, 1));
  }

  function quickAddressMatchScore(input, candidate) {
    const wanted = normalizeQuickAddress(input);
    const existing = normalizeQuickAddress(candidate);
    if (!wanted || !existing) return 0;
    if (wanted === existing) return 100;
    const wantedParts = wanted.split(' ').filter((part) => part.length > 1 && !/^\d+$/.test(part));
    const existingParts = existing.split(' ').filter((part) => part.length > 1 && !/^\d+$/.test(part));
    const tokenScore = wantedParts.length
      ? wantedParts.reduce((sum, part) => sum + Math.max(0, ...existingParts.map((candidatePart) => quickTokenSimilarity(part, candidatePart))), 0) / wantedParts.length
      : 0;
    const wantedNumbers = wanted.match(/\b\d+[a-z]?\b/g) || [];
    const existingNumbers = new Set(existing.match(/\b\d+[a-z]?\b/g) || []);
    const wantedPostal = wantedNumbers.find((part) => /^\d{4}$/.test(part));
    const wantedHouse = wantedNumbers.find((part) => part !== wantedPostal);
    const samePostal = Boolean(wantedPostal && existingNumbers.has(wantedPostal));
    const sameHouseNumber = Boolean(wantedHouse && existingNumbers.has(wantedHouse));
    return Math.round((tokenScore * 65) + (sameHouseNumber ? 25 : 0) + (samePostal ? 10 : 0));
  }

  function suggestQuickSharedHead() {
    if (quickSetupType !== 'bmcnet') return;
    const address = document.getElementById('quickAddress').value.trim();
    const select = document.getElementById('quickSharedHead');
    const hint = document.getElementById('quickSharedHeadSuggestion');
    if (address.length < 4) {
      hint.className = 'small text-muted mt-1';
      hint.textContent = 'Skriv installationsadressen, så foreslår systemet en hovedforbindelse.';
      return;
    }
    const matches = quickSharedHeadOptions
      .map((item) => ({item, score: quickAddressMatchScore(address, item.address)}))
      .filter((match) => match.score >= 55)
      .sort((a, b) => b.score - a.score);
    if (!matches.length) {
      hint.className = 'small text-warning mt-1';
      hint.textContent = 'Ingen delt hovedforbindelse matcher adressen. Vælg manuelt.';
      return;
    }
    const best = matches[0];
    select.value = String(best.item.id);
    hint.className = 'small text-success fw-semibold mt-1';
    hint.innerHTML = `<i class="bi bi-check-circle me-1"></i>Foreslået ud fra adressen: ${escapeHtml(best.item.name || `#${best.item.id}`)}${best.item.address ? ` · ${escapeHtml(best.item.address)}` : ''}`;
    updateQuickSetupSummary();
  }

  function updateQuickSetupSummary() {
    const customer = quickCustomerOptions.find((item) => Number(item.id) === Number(document.getElementById('quickCustomerId').value || 0));
    const product = quickProductOptions.find((item) => Number(item.id) === Number(document.getElementById('quickProduct').value || 0));
    const existing = document.getElementById('quickConnectionMode').value === 'existing';
    const connectionText = existing
      ? document.getElementById('quickExistingConnection').selectedOptions[0]?.textContent || 'vælg forbindelse'
      : document.getElementById('quickConnectionName').value.trim() || 'ny forbindelse';
    const owner = quickSetupType === 'shared' ? 'BMC Networks (delefiber)' : (customer?.name || 'vælg kunde');
    document.getElementById('quickSetupSummary').innerHTML = quickSetupType === 'shared'
      ? `<strong>Kontrol:</strong> ${escapeHtml(owner)} · ${escapeHtml(connectionText)}. Der oprettes kun en delt hovedforbindelse — intet produkt eller abonnement.`
      : `<strong>Kontrol:</strong> ${escapeHtml(owner)} · ${escapeHtml(product?.name || 'vælg produkt')} · ${escapeHtml(connectionText)}. Abonnementet oprettes som kladde.`;
  }

  async function submitQuickSetup() {
    const feedback = document.getElementById('quickSetupFeedback');
    const button = document.getElementById('quickSetupSubmit');
    const customerId = resolveQuickCustomerId();
    const productId = Number(document.getElementById('quickProduct').value || 0) || null;
    const existing = document.getElementById('quickConnectionMode').value === 'existing';
    const payload = {
      customer_id: customerId,
      product_id: productId,
      start_date: document.getElementById('quickStartDate').value,
      connection_id: existing ? (Number(document.getElementById('quickExistingConnection').value || 0) || null) : null,
      connection_name: existing ? null : document.getElementById('quickConnectionName').value.trim(),
      vendor_id: existing ? null : (Number(document.getElementById('quickVendor').value || 0) || null),
      circuit_number: document.getElementById('quickCircuit').value.trim() || null,
      address: document.getElementById('quickAddress').value.trim() || null,
      technology: document.getElementById('quickTechnology').value.trim() || null,
      download_mbps: Number(document.getElementById('quickDownload').value || 0) || null,
      upload_mbps: Number(document.getElementById('quickUpload').value || 0) || null,
      monthly_cost: Number(document.getElementById('quickCost').value || 0),
      unit_price: document.getElementById('quickPrice').value === '' ? null : Number(document.getElementById('quickPrice').value),
      billing_interval: document.getElementById('quickInterval').value,
      billing_day: Number(document.getElementById('quickBillingDay').value || 1),
      notes: (quickSetupType === 'bmcnet' ? document.getElementById('quickBmcnetNotes').value : document.getElementById('quickNotes').value).trim() || null,
      shared_fiber: quickSetupType === 'shared',
    };
    if (!quickSetupType) {
      feedback.textContent = 'Vælg først fysisk forbindelse eller BMCnet.';
      return;
    }
    const missingSubscription = quickSetupType !== 'shared' && (!payload.customer_id || !payload.product_id || !payload.start_date);
    if (missingSubscription || (existing ? !payload.connection_id : !payload.connection_name)) {
      feedback.textContent = quickSetupType === 'shared'
        ? 'Skriv et navn til hovedforbindelsen.'
        : 'Vælg kunde, produkt, startdato og forbindelse.';
      return;
    }
    button.disabled = true;
    feedback.textContent = 'Opretter og forbinder…';
    try {
      const sharedHeadId = Number(document.getElementById('quickSharedHead').value || 0) || null;
      if (quickSetupType === 'bmcnet' && !sharedHeadId) throw new Error('Vælg en delt hovedforbindelse.');
      const endpoint = quickSetupType === 'bmcnet'
        ? `/api/v1/internet-connections/${sharedHeadId}/bmcnet-connections`
        : '/api/v1/internet-connections/quick-setup';
      const requestPayload = quickSetupType === 'bmcnet' ? {
        customer_id: payload.customer_id,
        case_title: payload.connection_name,
        service_label: payload.connection_name,
        address: payload.address,
        billing_interval: payload.billing_interval,
        billing_day: payload.billing_day,
        start_date: payload.start_date,
        internet_product_id: payload.product_id,
        internet_unit_price: payload.unit_price,
        notes: payload.notes,
      } : payload;
      const response = await fetch(endpoint, {method:'POST', headers:{'Content-Type':'application/json'}, body:JSON.stringify(requestPayload)});
      if (!response.ok) throw new Error(await response.text());
      const result = await response.json();
      const connectionLink = `<a href="/economy/internet-connections/${result.connection.id}">Åbn forbindelsen</a>`;
      const subscriptionLink = result.sag?.id ? ` · <a href="/sag/${result.sag.id}/v3?tab=subscription">Åbn abonnementet</a>` : '';
      feedback.innerHTML = `Oprettet. ${connectionLink}${subscriptionLink}`;
      await loadInternetPage();
    } catch (error) {
      feedback.textContent = `Kunne ikke oprette: ${error.message}`;
    } finally {
      button.disabled = false;
    }
  }

  document.addEventListener('DOMContentLoaded', async () => {
    document.getElementById('searchInput').addEventListener('keydown', (event) => {
      if (event.key === 'Enter') loadInternetPage();
    });
    document.getElementById('connectionSubscriptionInput').addEventListener('change', () => {
      document.getElementById('connectionSubscriptionIdInput').value = resolveSubscriptionId(document.getElementById('connectionSubscriptionInput').value) || '';
    });
    document.getElementById('quickCustomerLookup').addEventListener('input', (event) => {
      document.getElementById('quickCustomerId').value = '';
      clearTimeout(quickCustomerTimer);
      quickCustomerTimer = setTimeout(() => searchQuickCustomers(event.target.value), 220);
    });
    document.getElementById('quickCustomerLookup').addEventListener('change', resolveQuickCustomerId);
    document.getElementById('quickCustomerResults').addEventListener('click', (event) => {
      const button = event.target.closest('[data-quick-customer-id]');
      if (button) selectQuickCustomer(Number(button.dataset.quickCustomerId));
    });
    document.getElementById('quickProduct').addEventListener('change', (event) => {
      const option = event.target.selectedOptions[0];
      document.getElementById('quickPrice').value = option?.value ? option.dataset.price || '' : '';
      updateQuickSetupSummary();
    });
    document.getElementById('quickAddress').addEventListener('input', suggestQuickSharedHead);
    ['quickExistingConnection','quickConnectionName','quickStartDate','quickInterval','quickBillingDay'].forEach((id) => document.getElementById(id)?.addEventListener('change', updateQuickSetupSummary));
    document.getElementById('quickSetupModal').addEventListener('show.bs.modal', async () => {
      quickSetupType = null;
      document.querySelectorAll('[data-quick-type]').forEach((button) => button.classList.remove('active'));
      document.getElementById('quickTypeHint').classList.remove('d-none');
      document.getElementById('quickSetupFields').classList.add('d-none');
      document.getElementById('quickSetupSubmit').classList.add('d-none');
      if (!document.getElementById('quickStartDate').value) document.getElementById('quickStartDate').value = new Date().toISOString().slice(0, 10);
      await loadQuickProducts();
      await populateQuickConnections();
      toggleQuickConnectionMode();
    });
    toggleCreateValueFields();
    await Promise.all([loadSubscriptionOptions(), loadInternetVendors()]);
    await Promise.all([loadInternetPage(), loadInvoiceSyncRuns()]);
  });
</script>
<datalist id="subscriptionLookupList"></datalist>
{% endblock %}