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

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

{% block extra_css %}
<style>
    .status-badge {
        display: inline-flex;
        align-items: center;
        padding: 0.25rem 0.6rem;
        border-radius: 999px;
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }
    .status-open {
        background-color: #e3f2fd;
        color: #0d47a1;
        border: 1px solid rgba(13, 71, 161, 0.1);
    }
    .status-closed {
        background-color: #f5f5f5;
        color: #616161;
        border: 1px solid rgba(0,0,0,0.05);
    }
    
    .opportunity-row:hover {
        background-color: rgba(0,0,0,0.02);
    }
    
    .opportunity-row td {
        vertical-align: middle;
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }
</style>
{% endblock %}

{% block content %}
<div class="container-fluid px-4 py-4">
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h2 class="fw-bold mb-1">Muligheder</h2>
            <p class="text-muted mb-0">Sager markeret som pipeline</p>
        </div>
        <div>
            <button class="btn btn-primary" onclick="openCreateOpportunityModal()">
                <i class="bi bi-plus-lg me-2"></i>Opret mulighed
            </button>
        </div>
    </div>

    <div class="card p-3 mb-4 shadow-sm border-0">
        <div class="row g-3 align-items-center">
            <div class="col-md-4">
                <div class="input-group">
                    <span class="input-group-text bg-white border-end-0"><i class="bi bi-search text-muted"></i></span>
                    <input type="text" class="form-control border-start-0 ps-0" id="searchInput" placeholder="Søg titel eller kunde..." oninput="filterOpportunities()">
                </div>
            </div>
            <div class="col-md-3">
                <select class="form-select" id="stageFilter" onchange="filterOpportunities()">
                    <option value="all">Alle stages</option>
                </select>
            </div>
            <div class="col-md-2">
                <select class="form-select" id="statusFilter" onchange="filterOpportunities()">
                    <option value="all">Alle status</option>
                    <option value="open" selected>Åbne</option>
                    <option value="closed">Lukkede</option>
                </select>
            </div>
            <div class="col-md-3 text-end">
                <span class="badge bg-light text-dark border" id="countLabel">Henter data...</span>
            </div>
        </div>
    </div>

    <div class="card shadow-sm border-0 overflow-hidden">
        <div class="table-responsive">
            <table class="table table-hover align-middle mb-0">
                <thead class="bg-light">
                    <tr>
                        <th class="ps-4">Titel</th>
                        <th>Kunde</th>
                        <th>Stage</th>
                        <th class="text-end">Sandsynlighed</th>
                        <th class="text-end">Beløb</th>
                        <th>Status</th>
                        <th>Deadline</th>
                        <th>Ansvarlig</th>
                        <th>Beskrivelse</th>
                        <th class="text-end pe-4">Handling</th>
                    </tr>
                </thead>
                <tbody id="opportunitiesTable">
                    <tr>
                        <td colspan="10" class="text-center py-5">
                            <div class="spinner-border text-primary spinner-border-sm me-2"></div>
                            <span class="text-muted">Indlæser muligheder...</span>
                        </td>
                    </tr>
                </tbody>
            </table>
        </div>
    </div>
</div>

<!-- Create Opportunity Modal -->
<div class="modal fade" id="opportunityModal" tabindex="-1">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Opret mulighed</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="opportunityForm">
                    <div class="mb-3">
                        <label class="form-label small text-uppercase text-muted fw-bold">Titel *</label>
                        <input type="text" class="form-control" id="title" required placeholder="Fx Opgradering af serverpark">
                    </div>
                    
                    <div class="mb-3">
                        <label class="form-label small text-uppercase text-muted fw-bold">Kunde *</label>
                        <select class="form-select" id="customerId" required>
                            <option value="">Vælg kunde...</option>
                        </select>
                    </div>
                    
                    <div class="mb-3">
                        <label class="form-label small text-uppercase text-muted fw-bold">Forventet lukning (Deadline)</label>
                        <input type="date" class="form-control" id="expectedCloseDate">
                    </div>
                    
                    <div class="mb-3">
                        <label class="form-label small text-uppercase text-muted fw-bold">Beskrivelse</label>
                        <textarea class="form-control" id="description" rows="4" placeholder="Beskriv muligheden..."></textarea>
                    </div>
                </form>
            </div>
            <div class="modal-footer bg-light">
                <button type="button" class="btn btn-link text-decoration-none text-muted" data-bs-dismiss="modal">Annuller</button>
                <button type="button" class="btn btn-primary px-4" onclick="createOpportunity()">Opret</button>
            </div>
        </div>
    </div>
</div>

{% endblock %}

{% block extra_js %}
<script>
let allOpportunities = [];
let customers = [];

document.addEventListener('DOMContentLoaded', async () => {
    // Load data in parallel
    const [custRes, oppRes] = await Promise.allSettled([
        fetch('/api/v1/customers?limit=1000'),
        fetch('/api/v1/opportunities')
    ]);

    // Handle customers
    if (custRes.status === 'fulfilled') {
        const data = await custRes.value.json();
        customers = Array.isArray(data) ? data : (data.customers || []);
        renderCustomerSelect();
    }

    // Handle opportunities
    if (oppRes.status === 'fulfilled') {
        allOpportunities = await oppRes.value.json();
        renderStageFilter();
        filterOpportunities();
    } else {
        document.getElementById('opportunitiesTable').innerHTML = 
            '<tr><td colspan="10" class="text-center text-danger py-5">Kunne ikke hente data</td></tr>';
    }
    
    // Setup search listener
    document.getElementById('searchInput').addEventListener('input', debounce(filterOpportunities, 300));
});

function debounce(func, wait) {
    let timeout;
    return function executedFunction(...args) {
        const later = () => {
            clearTimeout(timeout);
            func(...args);
        };
        clearTimeout(timeout);
        timeout = setTimeout(later, wait);
    };
};

function renderCustomerSelect() {
    const select = document.getElementById('customerId');
    // Sort customers by name
    customers.sort((a, b) => (a.name || '').localeCompare(b.name || ''));
    
    select.innerHTML = '<option value="">Vælg kunde...</option>' +
        customers.map(c => `<option value="${c.id}">${escapeHtml(c.name)}</option>`).join('');
}

function renderStageFilter() {
    const select = document.getElementById('stageFilter');
    if (!select) return;

    const current = select.value || 'all';
    const stages = [...new Set(
        allOpportunities
            .map(o => (o.pipeline_stage || '').trim())
            .filter(Boolean)
    )].sort((a, b) => a.localeCompare(b, 'da'));

    select.innerHTML = '<option value="all">Alle stages</option>' +
        stages.map(stage => `<option value="${escapeHtml(stage)}">${escapeHtml(stage)}</option>`).join('');

    if (current !== 'all' && stages.includes(current)) {
        select.value = current;
    }
}

function filterOpportunities() {
    const search = document.getElementById('searchInput').value.toLowerCase();
    const stageFilter = document.getElementById('stageFilter').value;
    const statusFilter = document.getElementById('statusFilter').value;

    const filtered = allOpportunities.filter(o => {
        // Search filter
        const matchSearch = !search || 
            (o.titel && o.titel.toLowerCase().includes(search)) || 
            (o.customer_name && o.customer_name.toLowerCase().includes(search));
        
        // Status filter
        let matchStatus = true;
        if (statusFilter === 'open') matchStatus = o.status === 'åben';
        if (statusFilter === 'closed') matchStatus = o.status !== 'åben';

        let matchStage = true;
        if (stageFilter !== 'all') {
            matchStage = (o.pipeline_stage || '') === stageFilter;
        }

        return matchSearch && matchStatus && matchStage;
    });

    renderTable(filtered);
}

function renderTable(data) {
    const tbody = document.getElementById('opportunitiesTable');
    document.getElementById('countLabel').textContent = `${data.length} fundet`;

    if (data.length === 0) {
        tbody.innerHTML = '<tr><td colspan="10" class="text-center text-muted py-5">Ingen muligheder fundet</td></tr>';
        return;
    }

    tbody.innerHTML = data.map(o => {
        const statusClass = (o.status === 'åben') ? 'status-open' : 'status-closed';
        const dateStr = o.deadline ? formatDate(o.deadline) : '<span class="text-muted">-</span>';
        const stage = o.pipeline_stage ? escapeHtml(o.pipeline_stage) : '<span class="text-muted">-</span>';
        const probability = Number.isFinite(Number(o.pipeline_probability)) ? `${Number(o.pipeline_probability)}%` : '<span class="text-muted">-</span>';
        const amount = (o.pipeline_amount === null || o.pipeline_amount === undefined)
            ? '<span class="text-muted">-</span>'
            : formatCurrency(o.pipeline_amount);
        const descPreview = o.beskrivelse ? 
            (o.beskrivelse.length > 50 ? escapeHtml(o.beskrivelse.substring(0, 50)) + '...' : escapeHtml(o.beskrivelse)) 
            : '<span class="text-muted fst-italic">Ingen beskrivelse</span>';

        return `
        <tr class="opportunity-row" style="cursor:pointer" onclick="window.location.href='/sag/${o.id}'">
            <td class="fw-semibold ps-4">${escapeHtml(o.titel)}</td>
            <td>${escapeHtml(o.customer_name)}</td>
            <td>${stage}</td>
            <td class="text-end">${probability}</td>
            <td class="text-end">${amount}</td>
            <td>
                <span class="status-badge ${statusClass}">
                    ${escapeHtml(o.status)}
                </span>
            </td>
            <td>${dateStr}</td>
            <td>${escapeHtml(o.ansvarlig_navn)}</td>
            <td class="small text-muted">${descPreview}</td>
            <td class="text-end pe-4 text-muted">
                <i class="bi bi-chevron-right"></i>
            </td>
        </tr>
        `;
    }).join('');
}

function openCreateOpportunityModal() {
    document.getElementById('opportunityForm').reset();
    new bootstrap.Modal(document.getElementById('opportunityModal')).show();
}

async function createOpportunity() {
    const title = document.getElementById('title').value;
    const customerId = document.getElementById('customerId').value;
    const desc = document.getElementById('description').value;
    const closeDate = document.getElementById('expectedCloseDate').value;
    
    if (!title || !customerId) {
        alert('Titel og Kunde skal udfyldes');
        return;
    }

    const payload = {
        title: title,
        customer_id: parseInt(customerId),
        description: desc,
        expected_close_date: closeDate || null
    };

    try {
        const btn = document.querySelector('#opportunityModal .btn-primary');
        const originalText = btn.textContent;
        btn.textContent = 'Gemmer...';
        btn.disabled = true;

        const res = await fetch('/api/v1/opportunities', {
            method: 'POST',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify(payload)
        });
        
        if (!res.ok) {
            const err = await res.json();
            throw new Error(err.detail || 'Kunne ikke oprette');
        }
        
        const newCase = await res.json();
        
        // Success
        bootstrap.Modal.getInstance(document.getElementById('opportunityModal')).hide();
        
        // Reload list
        const oppRes = await fetch('/api/v1/opportunities');
        allOpportunities = await oppRes.json();
        filterOpportunities();
        
        // Reset btn
        btn.textContent = originalText;
        btn.disabled = false;
        
    } catch (e) {
        alert('Fejl: ' + e.message);
        const btn = document.querySelector('#opportunityModal .btn-primary');
        btn.textContent = 'Opret';
        btn.disabled = false;
    }
}

function formatDate(dateStr) {
    if (!dateStr) return '';
    const d = new Date(dateStr);
    return d.toLocaleDateString('da-DK', {day: 'numeric', month: 'short', year: 'numeric'});
}

function formatCurrency(value) {
    return new Intl.NumberFormat('da-DK', {
        style: 'currency',
        currency: 'DKK',
        minimumFractionDigits: 2,
        maximumFractionDigits: 2
    }).format(Number(value || 0));
}

function escapeHtml(text) {
    if (text === null || text === undefined) return '';
    return String(text)
        .replace(/&/g, "&amp;")
        .replace(/</g, "&lt;")
        .replace(/>/g, "&gt;")
        .replace(/"/g, "&quot;")
        .replace(/'/g, "&#039;");
}
</script>
{% endblock %}