bmc_hub/app/customers/frontend/customers.html

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

{% block title %}Kunder - BMC Hub{% endblock %}

{% block extra_css %}
<style>
    .customers-toolbar {
        gap: 1rem;
    }

    .toolbar-search-slot {
        flex: 1;
        display: flex;
        justify-content: center;
    }

    .search-wrap {
        position: relative;
        min-width: 280px;
        max-width: 460px;
        width: min(46vw, 460px);
    }

    .search-wrap .header-search {
        width: 100%;
        padding-right: 2.4rem;
    }

    .search-clear {
        position: absolute;
        right: 0.45rem;
        top: 50%;
        transform: translateY(-50%);
        border: 0;
        width: 1.8rem;
        height: 1.8rem;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        background: transparent;
    }

    .search-clear:hover {
        background: rgba(15, 76, 117, 0.12);
        color: var(--text-primary);
    }

    .search-clear.d-none {
        display: none !important;
    }

    .filter-btn {
        background: var(--bg-card);
        border: 1px solid rgba(0,0,0,0.1);
        color: var(--text-secondary);
        padding: 0.5rem 1.2rem;
        border-radius: 20px;
        font-size: 0.9rem;
        transition: all 0.2s;
    }

    .filter-btn:hover, .filter-btn.active {
        background: var(--accent);
        color: white;
        border-color: var(--accent);
    }

    .lookup-status {
        font-size: 0.85rem;
        color: var(--text-secondary);
    }

    @media (max-width: 992px) {
        .customers-toolbar {
            width: 100%;
            flex-direction: column;
            align-items: stretch !important;
        }

        .toolbar-search-slot {
            width: 100%;
            justify-content: stretch;
        }

        .search-wrap {
            width: 100%;
            max-width: 100%;
        }
    }
</style>
{% endblock %}

{% block content %}
    <div class="d-flex justify-content-between align-items-center mb-5 customers-toolbar">
        <div>
            <h2 class="fw-bold mb-1">Kunder</h2>
            <p class="text-muted mb-0">Administrer dine kunder</p>
        </div>
        <div class="toolbar-search-slot">
            <div class="search-wrap">
                <input type="search" id="searchInput" class="header-search" placeholder="Søg kunde, CVR, kontakt eller e-mail..." autocomplete="off" spellcheck="false">
                <button type="button" id="searchClearBtn" class="search-clear d-none" aria-label="Ryd søgning" title="Ryd søgning">
                    <i class="bi bi-x-lg"></i>
                </button>
            </div>
        </div>
        <div class="d-flex gap-2">
            <button type="button" class="btn btn-outline-secondary" onclick="openDuplicateCustomersModal()">
                <i class="bi bi-intersect me-2"></i>Find dubletter
            </button>
            <button type="button" id="openCreateCustomerBtn" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#createCustomerModal">
                <i class="bi bi-plus-lg me-2"></i>Opret Kunde
            </button>
        </div>
    </div>

    <div class="mb-4 d-flex gap-2">
        <button class="filter-btn active" data-filter="all" type="button">Alle Kunder</button>
        <button class="filter-btn" data-filter="active" type="button">Aktive</button>
        <button class="filter-btn" data-filter="inactive" type="button">Inaktive</button>
        <button class="filter-btn" data-filter="vip" type="button">VIP</button>
    </div>

    <div class="card p-4">
        <div class="table-responsive">
            <table class="table table-hover align-middle">
                <thead>
                    <tr>
                        <th>Virksomhed</th>
                        <th>Kontakt</th>
                        <th>CVR</th>
                        <th>Status</th>
                        <th>E-mail</th>
                        <th class="text-end">Handlinger</th>
                    </tr>
                </thead>
                <tbody id="customersTableBody">
                    <tr>
                        <td colspan="6" class="text-center py-5">
                            <div class="spinner-border text-primary" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                        </td>
                    </tr>
                </tbody>
            </table>
        </div>
        <div class="d-flex justify-content-between align-items-center mt-3">
            <div class="text-muted" id="customerCount">Loading...</div>
            <nav>
                <ul class="pagination mb-0" id="pagination"></ul>
            </nav>
        </div>
    </div>

    <div class="modal fade" id="duplicateCustomersModal" tabindex="-1" aria-labelledby="duplicateCustomersModalLabel" 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" id="duplicateCustomersModalLabel">Mulige kundedubletter</h5><small class="text-muted">Vælg hovedkunde og kunder, der skal samles. Gennemse flytningen før du bekræfter.</small></div>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Luk"></button>
                </div>
                <div class="modal-body" id="duplicateCustomersContent"><div class="text-center py-5"><div class="spinner-border text-primary"></div></div></div>
            </div>
        </div>
    </div>

    <div class="modal fade" id="createCustomerModal" tabindex="-1" aria-labelledby="createCustomerModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-dialog-scrollable">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="createCustomerModalLabel">Opret ny kunde</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Luk"></button>
                </div>
                <form id="createCustomerForm">
                    <div class="modal-body">
                        <div class="row g-3">
                            <div class="col-md-4">
                                <label class="form-label" for="createCustomerCvr">CVR</label>
                                <div class="input-group">
                                    <input type="text" class="form-control" id="createCustomerCvr" placeholder="fx 24256790" inputmode="numeric" maxlength="8">
                                    <button type="button" class="btn btn-outline-secondary" id="lookupCvrBtn">Hent</button>
                                </div>
                                <div class="lookup-status mt-1" id="lookupCvrStatus">Indtast CVR og klik Hent for autofyld.</div>
                            </div>
                            <div class="col-md-8">
                                <label class="form-label" for="createCustomerName">Virksomhedsnavn *</label>
                                <input type="text" class="form-control" id="createCustomerName" required>
                            </div>
                            <div class="col-md-6">
                                <label class="form-label" for="createCustomerEmail">E-mail</label>
                                <input type="email" class="form-control" id="createCustomerEmail">
                            </div>
                            <div class="col-md-6">
                                <label class="form-label" for="createCustomerInvoiceEmail">Faktura e-mail</label>
                                <input type="email" class="form-control" id="createCustomerInvoiceEmail">
                            </div>
                            <div class="col-md-6">
                                <label class="form-label" for="createCustomerPhone">Telefon</label>
                                <input type="text" class="form-control" id="createCustomerPhone">
                            </div>
                            <div class="col-md-6">
                                <label class="form-label" for="createCustomerWebsite">Website</label>
                                <input type="url" class="form-control" id="createCustomerWebsite" placeholder="https://...">
                            </div>
                            <div class="col-md-8">
                                <label class="form-label" for="createCustomerAddress">Adresse</label>
                                <input type="text" class="form-control" id="createCustomerAddress">
                            </div>
                            <div class="col-md-2">
                                <label class="form-label" for="createCustomerPostalCode">Postnr.</label>
                                <input type="text" class="form-control" id="createCustomerPostalCode">
                            </div>
                            <div class="col-md-2">
                                <label class="form-label" for="createCustomerCity">By</label>
                                <input type="text" class="form-control" id="createCustomerCity">
                            </div>
                            <div class="col-md-4">
                                <label class="form-label" for="createCustomerCountry">Land</label>
                                <input type="text" class="form-control" id="createCustomerCountry" value="DK">
                            </div>
                            <div class="col-md-8 d-flex align-items-end">
                                <div class="form-check form-switch">
                                    <input class="form-check-input" type="checkbox" role="switch" id="createCustomerIsActive" checked>
                                    <label class="form-check-label" for="createCustomerIsActive">Kunden er aktiv</label>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Annuller</button>
                        <button type="submit" class="btn btn-primary" id="createCustomerSubmitBtn">
                            <span class="submit-label">Opret kunde</span>
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>

<script>
let currentPage = 1;
const pageSize = 50;
let totalCustomers = 0;
let searchTerm = '';
let searchTimeout = null;
let currentRequestController = null;
let lastLoadedQueryKey = '';
let createCustomerModal = null;
let activeFilter = 'all';

// Load customers on page load
document.addEventListener('DOMContentLoaded', () => {
    loadCustomers();
    createCustomerModal = new bootstrap.Modal(document.getElementById('createCustomerModal'));

    // Setup search with debounce
    const searchInput = document.getElementById('searchInput');
    const clearBtn = document.getElementById('searchClearBtn');

    const triggerSearch = () => {
        const nextSearchTerm = searchInput.value.trim();
        if (nextSearchTerm === searchTerm) {
            toggleClearButton(nextSearchTerm);
            return;
        }

        searchTerm = nextSearchTerm;
        toggleClearButton(searchTerm);
        loadCustomers(1);
    };

    searchInput.addEventListener('input', (e) => {
        clearTimeout(searchTimeout);
        toggleClearButton(e.target.value.trim());
        searchTimeout = setTimeout(() => {
            triggerSearch();
        }, 300);
    });

    searchInput.addEventListener('keydown', (e) => {
        if (e.key === 'Enter') {
            clearTimeout(searchTimeout);
            triggerSearch();
        }

        if (e.key === 'Escape') {
            if (!searchInput.value) {
                return;
            }
            searchInput.value = '';
            clearTimeout(searchTimeout);
            triggerSearch();
        }
    });

    clearBtn.addEventListener('click', () => {
        if (!searchInput.value) {
            return;
        }

        searchInput.value = '';
        clearTimeout(searchTimeout);
        triggerSearch();
        searchInput.focus();
    });

    document.getElementById('createCustomerForm').addEventListener('submit', createCustomer);
    document.getElementById('lookupCvrBtn').addEventListener('click', lookupCvrAndAutofill);
    document.getElementById('createCustomerCvr').addEventListener('input', onCvrInput);
    document.querySelectorAll('.filter-btn[data-filter]').forEach((btn) => {
        btn.addEventListener('click', () => {
            const nextFilter = btn.dataset.filter || 'all';
            if (nextFilter === activeFilter) {
                return;
            }

            activeFilter = nextFilter;
            syncFilterButtons();
            lastLoadedQueryKey = '';
            loadCustomers(1);
        });
    });

    document.getElementById('createCustomerModal').addEventListener('hidden.bs.modal', () => {
        resetCreateCustomerForm();
    });
});

function onCvrInput(e) {
    const digits = String(e.target.value || '').replace(/\D/g, '').slice(0, 8);
    e.target.value = digits;
    setLookupStatus('Indtast CVR og klik Hent for autofyld.', false);
}

function setLookupStatus(message, isError = false) {
    const status = document.getElementById('lookupCvrStatus');
    status.textContent = message;
    status.classList.toggle('text-danger', isError);
}

async function lookupCvrAndAutofill() {
    const cvrInput = document.getElementById('createCustomerCvr');
    const lookupBtn = document.getElementById('lookupCvrBtn');
    const cvr = String(cvrInput.value || '').replace(/\D/g, '');

    if (cvr.length !== 8) {
        setLookupStatus('CVR skal være præcis 8 cifre.', true);
        return;
    }

    lookupBtn.disabled = true;
    lookupBtn.innerHTML = '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>';
    setLookupStatus('Henter data fra FirmaAPI...', false);

    try {
        const response = await fetch(`/api/v1/cvr/${cvr}`);
        if (!response.ok) {
            if (response.status === 404) {
                setLookupStatus('CVR blev ikke fundet.', true);
                return;
            }
            throw new Error(`HTTP ${response.status}`);
        }

        const data = await response.json();
        applyCustomerAutofill(data || {});
        setLookupStatus('CVR-data hentet og felter autofyldt.', false);
    } catch (error) {
        console.error('CVR lookup failed:', error);
        setLookupStatus(`Kunne ikke hente CVR-data: ${error.message}`, true);
    } finally {
        lookupBtn.disabled = false;
        lookupBtn.textContent = 'Hent';
    }
}

function applyCustomerAutofill(data) {
    if (data.name) document.getElementById('createCustomerName').value = data.name;
    if (data.email) document.getElementById('createCustomerEmail').value = data.email;
    if (data.phone) document.getElementById('createCustomerPhone').value = data.phone;
    if (data.address) document.getElementById('createCustomerAddress').value = data.address;
    if (data.city) document.getElementById('createCustomerCity').value = data.city;
    if (data.postal_code || data.zipcode) {
        document.getElementById('createCustomerPostalCode').value = data.postal_code || data.zipcode;
    }
    if (data.country) document.getElementById('createCustomerCountry').value = data.country;
    if (data.website) document.getElementById('createCustomerWebsite').value = data.website;
}

function buildCreateCustomerPayload() {
    const email = document.getElementById('createCustomerEmail').value.trim();
    const domain = email.includes('@') ? email.split('@').pop().toLowerCase() : null;

    const cleanValue = (id) => {
        const value = document.getElementById(id).value.trim();
        return value || null;
    };

    return {
        name: document.getElementById('createCustomerName').value.trim(),
        cvr_number: cleanValue('createCustomerCvr'),
        email: email || null,
        email_domain: domain,
        phone: cleanValue('createCustomerPhone'),
        address: cleanValue('createCustomerAddress'),
        city: cleanValue('createCustomerCity'),
        postal_code: cleanValue('createCustomerPostalCode'),
        country: cleanValue('createCustomerCountry') || 'DK',
        website: cleanValue('createCustomerWebsite'),
        is_active: document.getElementById('createCustomerIsActive').checked,
        invoice_email: cleanValue('createCustomerInvoiceEmail'),
        mobile_phone: null,
    };
}

async function createCustomer(event) {
    event.preventDefault();

    const submitBtn = document.getElementById('createCustomerSubmitBtn');
    const submitLabel = submitBtn.querySelector('.submit-label');
    const payload = buildCreateCustomerPayload();

    if (!payload.name) {
        setLookupStatus('Virksomhedsnavn er påkrævet.', true);
        return;
    }

    submitBtn.disabled = true;
    submitLabel.textContent = 'Opretter...';

    try {
        const response = await fetch('/api/v1/customers', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(payload)
        });

        if (!response.ok) {
            const errorText = await response.text();
            throw new Error(errorText || `HTTP ${response.status}`);
        }

        const created = await response.json();
        createCustomerModal.hide();
        searchTerm = '';
        document.getElementById('searchInput').value = '';
        toggleClearButton('');
        lastLoadedQueryKey = '';
        await loadCustomers(1);

        if (created && created.id) {
            window.location.href = `/customers/${created.id}`;
            return;
        }
    } catch (error) {
        console.error('Failed to create customer:', error);
        setLookupStatus(`Oprettelse fejlede: ${error.message}`, true);
    } finally {
        submitBtn.disabled = false;
        submitLabel.textContent = 'Opret kunde';
    }
}

function resetCreateCustomerForm() {
    const form = document.getElementById('createCustomerForm');
    form.reset();
    document.getElementById('createCustomerCountry').value = 'DK';
    document.getElementById('createCustomerIsActive').checked = true;
    setLookupStatus('Indtast CVR og klik Hent for autofyld.', false);
}

function syncFilterButtons() {
    document.querySelectorAll('.filter-btn[data-filter]').forEach((btn) => {
        btn.classList.toggle('active', btn.dataset.filter === activeFilter);
    });
}

async function loadCustomers(page = 1) {
    currentPage = page;
    const offset = (page - 1) * pageSize;

    if (currentRequestController) {
        currentRequestController.abort();
    }
    currentRequestController = new AbortController();

    try {
        let url = `/api/v1/customers?limit=${pageSize}&offset=${offset}`;
        if (searchTerm) {
            url += `&search=${encodeURIComponent(searchTerm)}`;
        }

        if (activeFilter === 'active') {
            url += '&is_active=true';
        } else if (activeFilter === 'inactive') {
            url += '&is_active=false';
        } else if (activeFilter === 'vip') {
            url += '&vip=true';
        }

        const queryKey = `${page}|${searchTerm}|${activeFilter}`;
        if (queryKey === lastLoadedQueryKey) {
            return;
        }

        const response = await fetch(url, { signal: currentRequestController.signal });
        if (!response.ok) {
            throw new Error(`HTTP ${response.status}`);
        }
        const data = await response.json();

        lastLoadedQueryKey = queryKey;
        totalCustomers = data.total;
        renderCustomers(data.customers);
        renderPagination();
        updateCount();

    } catch (error) {
        if (error.name === 'AbortError') {
            return;
        }
        console.error('Error loading customers:', error);
        document.getElementById('customersTableBody').innerHTML = `
            <tr><td colspan="6" class="text-center text-danger py-5">
                ❌ Fejl ved indlæsning: ${error.message}
            </td></tr>
        `;
    } finally {
        currentRequestController = null;
    }
}

function duplicateEscape(value) {
    return escapeHtml(value === null || value === undefined || value === '' ? '–' : value);
}

function duplicateRelationSummary(counts) {
    const labels = { contacts: 'kontakter', sager: 'sager', lokationer: 'lokationer', hardware: 'hardware', abonnementer: 'abonnementer' };
    return Object.entries(labels).map(([key, label]) => `${counts?.[key] || 0} ${label}`).join(' · ');
}

async function openDuplicateCustomersModal() {
    customerMergePreviews.clear();
    const modalElement = document.getElementById('duplicateCustomersModal');
    const content = document.getElementById('duplicateCustomersContent');
    bootstrap.Modal.getOrCreateInstance(modalElement).show();
    content.innerHTML = '<div class="text-center py-5"><div class="spinner-border text-primary"></div><div class="text-muted mt-2">Finder dubletter…</div></div>';
    try {
        const response = await fetch('/api/v1/customers/duplicates', { credentials: 'include' });
        const data = await response.json();
        if (!response.ok) throw new Error(data.detail || 'Kunne ikke hente dubletter');
        const groups = Array.isArray(data.groups) ? data.groups : [];
        if (!groups.length) {
            content.innerHTML = '<div class="alert alert-success mb-0"><i class="bi bi-check-circle me-2"></i>Ingen aktive kunder med samme navn blev fundet.</div>';
            return;
        }
        const status = {
            same_economic: ['success', 'Samme e-conomic-relation'],
            conflicting_economic: ['danger', 'Forskellige e-conomic-relationer – kræver kontrol'],
            missing_economic: ['warning', 'Mangler e-conomic-relation']
        };
        content.innerHTML = `<p class="text-muted small">${groups.length} grupper fundet. Vælg én hovedkunde og markér de kunder, der skal samles med den. Hovedkundens oplysninger bevares; tomme felter udfyldes, når værdien er entydig. Kildekunder deaktiveres. Eksterne systemer ændres ikke.</p>` + groups.map((group, groupIndex) => {
            const [colour, label] = status[group.economic_status] || status.missing_economic;
            const rows = group.candidates.map((customer, index) => `
                <tr class="${index === 0 ? 'table-light' : ''}">
                    <td><input class="form-check-input" type="radio" name="merge-target-${groupIndex}" value="${Number(customer.id)}" ${index === 0 ? 'checked' : ''} aria-label="Behold som hovedkunde: ${duplicateEscape(customer.name)}" onchange="resetCustomerMerge(${groupIndex})"></td>
                    <td><input class="form-check-input merge-source" type="checkbox" value="${Number(customer.id)}" checked aria-label="Medtag kunde: ${duplicateEscape(customer.name)}" onchange="resetCustomerMerge(${groupIndex})"></td>
                    <td><a href="/customers/${customer.id}" class="fw-semibold">${duplicateEscape(customer.name)}</a>${index === 0 ? '<span class="badge text-bg-primary ms-2">Foreslået hovedkunde</span>' : ''}</td>
                    <td>${duplicateEscape(customer.economic_customer_number)}</td>
                    <td>${duplicateEscape(customer.cvr_number)}</td>
                    <td class="small text-muted">${duplicateRelationSummary(customer.relation_counts)}</td>
                </tr>`).join('');
            return `<section id="customer-merge-group-${groupIndex}" class="border rounded-3 mb-3 overflow-hidden">
                <div class="d-flex justify-content-between gap-3 align-items-center px-3 py-2 bg-light"><strong>${duplicateEscape(group.candidates?.[0]?.name || group.key)}</strong><span class="badge text-bg-${colour}">${label}</span></div>
                <div class="table-responsive"><table class="table table-sm align-middle mb-0"><thead><tr><th>Hovedkunde</th><th>Medtag</th><th>Kunde</th><th>e-conomic</th><th>CVR</th><th>Data knyttet til posten</th></tr></thead><tbody>${rows}</tbody></table></div>
                <div class="p-3 border-top"><button class="btn btn-sm btn-primary" type="button" onclick="previewCustomerMerge(${groupIndex}, this)">Vis sammenlægning</button><div class="merge-preview mt-2" aria-live="polite"></div></div>
            </section>`;
        }).join('');
    } catch (error) {
        content.innerHTML = `<div class="alert alert-danger mb-0">${duplicateEscape(error.message)}</div>`;
    }
}

const customerMergePreviews = new Map();
function resetCustomerMerge(index) {
    customerMergePreviews.delete(index);
    document.querySelector(`#customer-merge-group-${index} .merge-preview`).replaceChildren();
}
function customerMergeSelection(index) {
    const section = document.getElementById(`customer-merge-group-${index}`);
    const target_id = Number(section.querySelector('input[type=radio]:checked').value);
    const source_ids = Array.from(section.querySelectorAll('.merge-source:checked'), input => Number(input.value)).filter(id => id !== target_id);
    if (!source_ids.length) throw new Error('Markér mindst én anden kunde, der skal samles med hovedkunden.');
    return { target_id, source_ids };
}
async function customerMergeRequest(path, body) {
    const response = await fetch(`/api/v1/customers/merge${path}`, {
        method: 'POST', credentials: 'include', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(body)
    });
    const data = await response.json();
    if (!response.ok) throw new Error(typeof data.detail === 'string' ? data.detail : 'Kunne ikke samle kunderne. Kontrollér dit valg.');
    return data;
}
function customerMergeLabel(table) {
    const labels = {contact_companies: 'Kontakttilknytninger', sag_sager: 'Sager', sag_kunder: 'Ekstra sagstilknytninger',
        ordre_drafts: 'Ordrer og fakturakladder', supplier_invoices: 'Leverandørfakturaer', supplier_invoice_lines: 'Fakturalinjer',
        entity_tags: 'Tags', alert_notes: 'Vigtige kundenoter', customer_notes: 'Kundenoter',
        hardware_assets: 'Hardware', hardware_ownership_history: 'Hardwarehistorik',
        tmodule_customers: 'Koblinger til tidsmodulet', tmodule_orders: 'Ordrekoblinger',
        sag_subscriptions: 'Abonnementer', locations_locations: 'Lokationer',
        email_messages: 'E-mails', conversations: 'Samtaler', tticket_tickets: 'Tickets',
        quick_time_items: 'Tidsregistrering og planlægning', customers: 'Kundehenvisninger',
        bmc_workflows: 'Kundeworkflows', customer_relationships: 'Kundeforbindelser',
        bmc_office_subscriptions: 'Office-abonnementer', customer_fixed_price_agreements: 'Fastprisaftaler',
        customer_vendor_links: 'Leverandørtilknytninger', email_domain_customer_mappings: 'E-maildomæner',
        email_templates: 'E-mailskabeloner', hardware: 'Hardwaretilknytninger',
        customer_house_organizations: 'Virksomheder i huset', contact_location_users: 'Brugere i huset',
        economic_price_rules: 'Prisregler', pipeline_opportunities: 'Salgsmuligheder',
        task_templates: 'Opgaveskabeloner', knowledge_articles: 'Vidensartikler',
        locations_wall_outlets: 'Netværksudtag', links: 'Links og adgange',
        link_access_log: 'Adgangshistorik', link_runbooks: 'Driftsvejledninger'};
    if (labels[table]) return labels[table];
    const families = {also: 'ALSO-tilknytninger', anydesk: 'AnyDesk', bmc_workflow: 'Workflowtilknytninger',
        drift: 'Driftstilknytninger', internet_connections: 'Internetforbindelser', invoice_error_finder: 'Fakturakontrol',
        migration_center: 'Importerede kundetilknytninger', nextcloud: 'Nextcloud', simply: 'Simply-abonnementer',
        vtiger: 'vTiger-tilknytninger', webshop: 'Webshop', tticket: 'Tickets og klippekort',
        workflow_tag: 'Taghistorik', fedex: 'FedEx-forsendelser', shipmondo: 'Shipmondo-forsendelser'};
    return Object.entries(families).find(([prefix]) => table.startsWith(prefix))?.[1] || 'Øvrige kundetilknytninger';
}
function customerMergeField(field) {
    return ({email:'E-mail', phone:'Telefon', address:'Adresse', email_domain:'E-maildomæne', city:'By',
        postal_code:'Postnummer', country:'Land', website:'Website', invoice_email:'Faktura-e-mail',
        mobile_phone:'Mobil', wiki_slug:'Wiki', economic_customer_number:'e-conomic-kundenummer',
        vtiger_id:'vTiger-id', vtiger_account_no:'vTiger-kundenummer', cvr_number:'CVR', name:'Navn',
        payment_terms_number:'Betalingsbetingelser', payment_terms_type:'Betalingstype', vat_zone_number:'Momszone',
        customer_group_number:'Kundegruppe', barred:'Spærring', currency_code:'Valuta', ean:'EAN',
        public_entry_number:'Offentligt kundenummer', subscriptions_locked:'Abonnementslås',
        standard_margin_percent:'Avance', special_freight_price:'Fragtpris', supplier_service_enrolled:'Leverandørservice',
        invoice_fee_amount:'Fakturagebyr', invoice_fee_exempt:'Gebyrfritagelse', standard_hourly_rate:'Timepris',
        is_bmc_customer:'Kundestatus', show_in_customer_list:'Visning i kundelisten',is_active:'Aktiv status'})[field] || 'Kundeoplysning';
}
async function previewCustomerMerge(index, button) {
    const area = document.querySelector(`#customer-merge-group-${index} .merge-preview`);
    resetCustomerMerge(index);
    button.disabled = true;
    const section = document.getElementById(`customer-merge-group-${index}`);
    section.querySelectorAll('input').forEach(input => input.disabled = true);
    area.textContent = 'Kontrollerer alle relationer og mulige konflikter…';
    try {
        const selection = customerMergeSelection(index);
        const data = await customerMergeRequest('/preview', selection);
        customerMergePreviews.set(index, {...selection, preview_token: data.preview_token});
        const main = data.customers.find(customer => customer.id === data.target_id);
        const total = data.relations.reduce((sum, item) => sum + item.count, 0);
        area.innerHTML = `<div class="alert alert-info mb-2"><strong>${data.source_ids.length} kunder samles under ${duplicateEscape(main.name)} (#${data.target_id})</strong><div>${total} relationer berøres. Sager, kontakter og lokale økonomirelationer følger med. Fakturaer i e-conomic forbliver på det eksisterende kundenummer.</div></div>` +
            `<ul class="small mb-2">${data.relations.map(item => `<li>${duplicateEscape(customerMergeLabel(item.table))}: ${item.count}</li>`).join('')}</ul>` +
            (data.filled_fields.length ? `<div class="small">Tomme felter udfyldes: ${duplicateEscape(data.filled_fields.map(customerMergeField).join(', '))}.</div>` : '') +
            (data.kept_main_fields.length ? `<div class="small text-warning">Forskellige oplysninger: ${duplicateEscape(data.kept_main_fields.map(customerMergeField).join(', '))}. Hovedkundens værdier bevares; originalerne gemmes i historikken.</div>` : '') +
            `<div class="small text-muted my-2">Kildekunder deaktiveres og knyttes til hovedkunden. Flytningen og de oprindelige kundeoplysninger gemmes i historikken.</div><button type="button" class="btn btn-sm btn-success" onclick="confirmCustomerMerge(${index}, this)">Bekræft sammenlægning af ${data.source_ids.length + 1} kunder</button>`;
    } catch (error) {
        area.innerHTML = `<div class="alert alert-danger mb-0">${duplicateEscape(error.message)}</div>`;
    } finally {
        button.disabled = false;
        section.querySelectorAll('input').forEach(input => input.disabled = false);
    }
}
async function confirmCustomerMerge(index, button) {
    const preview = customerMergePreviews.get(index);
    if (!preview) return;
    button.disabled = true;
    const area = document.querySelector(`#customer-merge-group-${index} .merge-preview`);
    try {
        const result = await customerMergeRequest('', preview);
        customerMergePreviews.delete(index);
        const section = document.getElementById(`customer-merge-group-${index}`);
        section.querySelectorAll('input, button').forEach(input => input.disabled = true);
        area.innerHTML = `<div class="alert alert-success mb-0">Kunderne er samlet. <a href="/customers/${result.target_id}">Åbn hovedkunden</a>. Historik #${result.history_id}.</div>`;
        loadCustomers();
    } catch (error) {
        customerMergePreviews.delete(index);
        area.innerHTML = `<div class="alert alert-danger mb-0">${duplicateEscape(error.message)} Vis sammenlægningen igen før et nyt forsøg.</div>`;
    }
}

function toggleClearButton(value) {
    document.getElementById('searchClearBtn')?.classList.toggle('d-none', !value);
}

function escapeHtml(value) {
    if (value === null || value === undefined) {
        return '-';
    }

    return String(value)
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&#39;');
}

function renderCustomers(customers) {
    const tbody = document.getElementById('customersTableBody');
    
    if (!customers || customers.length === 0) {
        tbody.innerHTML = `
            <tr><td colspan="6" class="text-center text-muted py-5">
                Ingen kunder fundet
            </td></tr>
        `;
        return;
    }
    
    tbody.innerHTML = customers.map(customer => {
        const initials = customer.name ? customer.name.split(' ').map(n => n[0]).join('').substring(0, 2).toUpperCase() : '??';
        const statusBadge = customer.is_active ? 
            '<span class="badge bg-success bg-opacity-10 text-success">Aktiv</span>' :
            '<span class="badge bg-secondary bg-opacity-10 text-secondary">Inaktiv</span>';
        const safeInitials = escapeHtml(initials);
        const safeName = escapeHtml(customer.name);
        const safeAddress = escapeHtml(customer.address);
        const safeContactName = escapeHtml(customer.contact_name);
        const safeContactPhone = escapeHtml(customer.contact_phone);
        const safeCvr = escapeHtml(customer.cvr_number);
        const safeEmail = escapeHtml(customer.email);
        
        return `
            <tr onclick="window.location.href='/customers/${customer.id}'" style="cursor: pointer;">
                <td>
                    <div class="d-flex align-items-center">
                        <div class="rounded bg-light d-flex align-items-center justify-content-center me-3 fw-bold" 
                             style="width: 40px; height: 40px; color: var(--accent);">
                            ${safeInitials}
                        </div>
                        <div>
                            <div class="fw-bold">${safeName}</div>
                            <div class="small text-muted">${safeAddress}</div>
                        </div>
                    </div>
                </td>
                <td>
                    <div class="fw-medium">${safeContactName}</div>
                    <div class="small text-muted">${safeContactPhone}</div>
                </td>
                <td class="text-muted">${safeCvr}</td>
                <td>${statusBadge}</td>
                <td class="text-muted">${safeEmail}</td>
                <td class="text-end">
                    <button class="btn btn-sm btn-outline-primary" 
                            onclick="event.stopPropagation(); window.location.href='/customers/${customer.id}'"
                            title="Se detaljer">
                        <i class="bi bi-arrow-right"></i>
                    </button>
                </td>
            </tr>
        `;
    }).join('');
}

function renderPagination() {
    const totalPages = Math.ceil(totalCustomers / pageSize);
    const pagination = document.getElementById('pagination');
    
    if (totalPages <= 1) {
        pagination.innerHTML = '';
        return;
    }
    
    let pages = [];
    
    // Previous button
    pages.push(`
        <li class="page-item ${currentPage === 1 ? 'disabled' : ''}">
            <a class="page-link" href="#" onclick="loadCustomers(${currentPage - 1}); return false;">
                <i class="bi bi-chevron-left"></i>
            </a>
        </li>
    `);
    
    // Page numbers (show max 7 pages)
    let startPage = Math.max(1, currentPage - 3);
    let endPage = Math.min(totalPages, startPage + 6);
    
    if (endPage - startPage < 6) {
        startPage = Math.max(1, endPage - 6);
    }
    
    if (startPage > 1) {
        pages.push(`<li class="page-item"><a class="page-link" href="#" onclick="loadCustomers(1); return false;">1</a></li>`);
        if (startPage > 2) {
            pages.push(`<li class="page-item disabled"><span class="page-link">...</span></li>`);
        }
    }
    
    for (let i = startPage; i <= endPage; i++) {
        pages.push(`
            <li class="page-item ${i === currentPage ? 'active' : ''}">
                <a class="page-link" href="#" onclick="loadCustomers(${i}); return false;">${i}</a>
            </li>
        `);
    }
    
    if (endPage < totalPages) {
        if (endPage < totalPages - 1) {
            pages.push(`<li class="page-item disabled"><span class="page-link">...</span></li>`);
        }
        pages.push(`<li class="page-item"><a class="page-link" href="#" onclick="loadCustomers(${totalPages}); return false;">${totalPages}</a></li>`);
    }
    
    // Next button
    pages.push(`
        <li class="page-item ${currentPage === totalPages ? 'disabled' : ''}">
            <a class="page-link" href="#" onclick="loadCustomers(${currentPage + 1}); return false;">
                <i class="bi bi-chevron-right"></i>
            </a>
        </li>
    `);
    
    pagination.innerHTML = pages.join('');
}

function updateCount() {
    if (totalCustomers === 0) {
        document.getElementById('customerCount').textContent = 'Ingen kunder fundet';
        return;
    }

    const start = (currentPage - 1) * pageSize + 1;
    const end = Math.min(currentPage * pageSize, totalCustomers);
    document.getElementById('customerCount').textContent = 
        `Viser ${start}-${end} af ${totalCustomers} kunder`;
}
</script>
{% endblock %}