// logs.js - Structured order viewer with text log fallback

let currentRunId = null;
let runsPage = 1;
let logPollTimer = null;
let currentFilter = 'all';
let ordersPage = 1;
let ordersSortColumn = 'order_date';
let ordersSortDirection = 'desc';

function fmtCost(v) {
    return v > 0 ? Number(v).toFixed(2) : '–';
}

function fmtDuration(startedAt, finishedAt) {
    if (!startedAt || !finishedAt) return '-';
    const diffMs = new Date(finishedAt) - new Date(startedAt);
    if (isNaN(diffMs) || diffMs < 0) return '-';
    const secs = Math.round(diffMs / 1000);
    if (secs < 60) return secs + 's';
    return Math.floor(secs / 60) + 'm ' + (secs % 60) + 's';
}

function runStatusBadge(status) {
    switch ((status || '').toLowerCase()) {
        case 'completed': return '<span style="color:#16a34a;font-weight:600">completed</span>';
        case 'running':   return '<span style="color:#2563eb;font-weight:600">running</span>';
        case 'failed':    return '<span style="color:#dc2626;font-weight:600">failed</span>';
        default:          return `<span style="font-weight:600">${esc(status)}</span>`;
    }
}

function orderStatusBadge(status) {
    switch ((status || '').toUpperCase()) {
        case 'IMPORTED':          return '<span class="badge bg-success">Importat</span>';
        case 'ALREADY_IMPORTED':  return '<span class="badge bg-info">Deja importat</span>';
        case 'SKIPPED':           return '<span class="badge bg-warning">Omis</span>';
        case 'ERROR':             return '<span class="badge bg-danger">Eroare</span>';
        case 'DELETED_IN_ROA':    return '<span class="badge bg-dark">Sters din ROA</span>';
        default:                  return `<span class="badge bg-secondary">${esc(status)}</span>`;
    }
}

function logStatusText(status) {
    switch ((status || '').toUpperCase()) {
        case 'IMPORTED':         return 'Importat';
        case 'ALREADY_IMPORTED': return 'Deja imp.';
        case 'SKIPPED':         return 'Omis';
        case 'ERROR':           return 'Eroare';
        default:                return esc(status);
    }
}

function logsGoPage(p) { loadRunOrders(currentRunId, null, p); }

// ── Runs Dropdown ────────────────────────────────

async function loadRuns() {
    // Load all recent runs for dropdown
    try {
        const res = await fetch(`/api/sync/history?page=1&per_page=100`);
        if (!res.ok) throw new Error('HTTP ' + res.status);
        const data = await res.json();
        const runs = data.runs || [];

        const dd = document.getElementById('runsDropdown');
        if (runs.length === 0) {
            dd.innerHTML = '<option value="">Niciun sync run</option>';
        } else {
            dd.innerHTML = '<option value="">-- Selecteaza un run --</option>' +
                runs.map(r => {
                    const started = r.started_at ? new Date(r.started_at).toLocaleString('ro-RO', {day:'2-digit',month:'2-digit',year:'numeric',hour:'2-digit',minute:'2-digit'}) : '?';
                    const st = (r.status || '').toUpperCase();
                    const statusEmoji = st === 'COMPLETED' ? '✓' : st === 'RUNNING' ? '⟳' : '✗';
                    const newImp = r.new_imported || 0;
                    const already = r.already_imported || 0;
                    const imp = r.imported || 0;
                    const skip = r.skipped || 0;
                    const err = r.errors || 0;
                    const impLabel = already > 0 ? `${newImp} noi, ${already} deja` : `${imp} imp`;
                    const label = `${started} — ${statusEmoji} ${r.status} (${impLabel}, ${skip} skip, ${err} err)`;
                    const selected = r.run_id === currentRunId ? 'selected' : '';
                    return `<option value="${esc(r.run_id)}" ${selected}>${esc(label)}</option>`;
                }).join('');
        }
        const ddMobile = document.getElementById('runsDropdownMobile');
        if (ddMobile) ddMobile.innerHTML = dd.innerHTML;
    } catch (err) {
        const dd = document.getElementById('runsDropdown');
        dd.innerHTML = `<option value="">Eroare: ${esc(err.message)}</option>`;
    }
}

// ── Run Selection ────────────────────────────────

async function selectRun(runId) {
    if (logPollTimer) { clearInterval(logPollTimer); logPollTimer = null; }

    currentRunId = runId;
    currentFilter = 'all';
    ordersPage = 1;

    const url = new URL(window.location);
    if (runId) { url.searchParams.set('run', runId); } else { url.searchParams.delete('run'); }
    history.replaceState(null, '', url);

    // Sync dropdown selection
    const dd = document.getElementById('runsDropdown');
    if (dd && dd.value !== runId) dd.value = runId;
    const ddMobile = document.getElementById('runsDropdownMobile');
    if (ddMobile && ddMobile.value !== runId) ddMobile.value = runId;

    if (!runId) {
        document.getElementById('logViewerSection').style.display = 'none';
        return;
    }

    document.getElementById('logViewerSection').style.display = '';
    const logRunIdEl = document.getElementById('logRunId'); if (logRunIdEl) logRunIdEl.textContent = runId;
    document.getElementById('logStatusBadge').innerHTML = '...';
    document.getElementById('textLogSection').style.display = 'none';

    await loadRunOrders(runId, 'all', 1);

    // Also load text log in background
    fetchTextLog(runId);
}

// ── Per-Order Filtering (R1) ─────────────────────

async function loadRunOrders(runId, statusFilter, page) {
    if (statusFilter != null) currentFilter = statusFilter;
    if (page != null) ordersPage = page;

    // Update filter pill active state
    document.querySelectorAll('#orderFilterPills .filter-pill').forEach(btn => {
        btn.classList.toggle('active', btn.dataset.logStatus === currentFilter);
    });

    try {
        const res = await fetch(`/api/sync/run/${encodeURIComponent(runId)}/orders?status=${currentFilter}&page=${ordersPage}&per_page=50&sort_by=${ordersSortColumn}&sort_dir=${ordersSortDirection}`);
        if (!res.ok) throw new Error('HTTP ' + res.status);
        const data = await res.json();

        const counts = data.counts || {};
        document.getElementById('countAll').textContent = counts.total || 0;
        document.getElementById('countImported').textContent = counts.imported || 0;
        document.getElementById('countSkipped').textContent = counts.skipped || 0;
        document.getElementById('countError').textContent = counts.error || 0;
        const alreadyEl = document.getElementById('countAlreadyImported');
        if (alreadyEl) alreadyEl.textContent = counts.already_imported || 0;

        const tbody = document.getElementById('runOrdersBody');
        const orders = data.orders || [];

        if (orders.length === 0) {
            tbody.innerHTML = '<tr><td colspan="9" class="text-center text-muted py-3">Nicio comanda</td></tr>';
        } else {
            tbody.innerHTML = orders.map((o, i) => {
                const dateStr = fmtDate(o.order_date);
                const orderTotal = o.order_total != null ? Number(o.order_total).toFixed(2) : '-';
                return `<tr style="cursor:pointer" onclick="openOrderDetail('${esc(o.order_number)}')">
                    <td>${statusDot(o.status)}</td>
                    <td>${(ordersPage - 1) * 50 + i + 1}</td>
                    <td class="text-nowrap">${dateStr}</td>
                    <td><code>${esc(o.order_number)}</code></td>
                    <td class="fw-bold">${esc(o.customer_name)}</td>
                    <td>${o.items_count || 0}</td>
                    <td class="text-end text-muted">${fmtCost(o.delivery_cost)}</td>
                    <td class="text-end text-muted">${fmtCost(o.discount_total)}</td>
                    <td class="text-end fw-bold">${orderTotal}</td>
                </tr>`;
            }).join('');
        }

        // Mobile flat rows
        const mobileList = document.getElementById('logsMobileList');
        if (mobileList) {
            if (orders.length === 0) {
                mobileList.innerHTML = '<div class="flat-row text-muted py-3 justify-content-center">Nicio comanda</div>';
            } else {
                mobileList.innerHTML = orders.map(o => {
                    const d = o.order_date || '';
                    let dateFmt = '-';
                    if (d.length >= 10) {
                        dateFmt = d.slice(8, 10) + '.' + d.slice(5, 7) + '.' + d.slice(2, 4);
                        if (d.length >= 16) dateFmt += ' ' + d.slice(11, 16);
                    }
                    const totalStr = o.order_total ? Number(o.order_total).toFixed(2) : '';
                    return `<div class="flat-row" onclick="openOrderDetail('${esc(o.order_number)}')" style="font-size:0.875rem">
                        ${statusDot(o.status)}
                        <span style="color:#6b7280" class="text-nowrap">${dateFmt}</span>
                        <span class="grow truncate fw-bold">${esc(o.customer_name || '—')}</span>
                        <span class="text-nowrap">x${o.items_count || 0}${totalStr ? ' · <strong>' + totalStr + '</strong>' : ''}</span>
                    </div>`;
                }).join('');
            }
        }

        // Mobile segmented control
        renderMobileSegmented('logsMobileSeg', [
            { label: 'Toate', count: counts.total || 0, value: 'all', active: currentFilter === 'all', colorClass: 'fc-neutral' },
            { label: 'Imp.', count: counts.imported || 0, value: 'IMPORTED', active: currentFilter === 'IMPORTED', colorClass: 'fc-green' },
            { label: 'Deja', count: counts.already_imported || 0, value: 'ALREADY_IMPORTED', active: currentFilter === 'ALREADY_IMPORTED', colorClass: 'fc-blue' },
            { label: 'Omise', count: counts.skipped || 0, value: 'SKIPPED', active: currentFilter === 'SKIPPED', colorClass: 'fc-yellow' },
            { label: 'Erori', count: counts.error || 0, value: 'ERROR', active: currentFilter === 'ERROR', colorClass: 'fc-red' }
        ], (val) => filterOrders(val));

        // Orders pagination
        const totalPages = data.pages || 1;
        const infoEl = document.getElementById('ordersPageInfo');
        if (infoEl) infoEl.textContent = `${data.total || 0} comenzi | Pagina ${ordersPage} din ${totalPages}`;
        const pagHtml = `<small class="text-muted me-auto">${data.total || 0} comenzi | Pagina ${ordersPage} din ${totalPages}</small>` + renderUnifiedPagination(ordersPage, totalPages, 'logsGoPage');
        const pagDiv = document.getElementById('ordersPagination');
        if (pagDiv) pagDiv.innerHTML = pagHtml;
        const pagDivTop = document.getElementById('ordersPaginationTop');
        if (pagDivTop) pagDivTop.innerHTML = pagHtml;

        // Update run status badge
        const runRes = await fetch(`/api/sync/run/${encodeURIComponent(runId)}`);
        const runData = await runRes.json();
        if (runData.run) {
            document.getElementById('logStatusBadge').innerHTML = runStatusBadge(runData.run.status);
            // Update mobile run dot
            const mDot = document.getElementById('mobileRunDot');
            if (mDot) mDot.className = 'sync-status-dot ' + (runData.run.status || 'idle');
        }
    } catch (err) {
        document.getElementById('runOrdersBody').innerHTML =
            `<tr><td colspan="9" class="text-center text-danger">${esc(err.message)}</td></tr>`;
    }
}

function filterOrders(status) {
    loadRunOrders(currentRunId, status, 1);
}

function sortOrdersBy(col) {
    if (ordersSortColumn === col) {
        ordersSortDirection = ordersSortDirection === 'asc' ? 'desc' : 'asc';
    } else {
        ordersSortColumn = col;
        ordersSortDirection = 'asc';
    }
    // Update sort icons
    document.querySelectorAll('#logViewerSection .sort-icon').forEach(span => {
        const c = span.dataset.col;
        span.textContent = c === ordersSortColumn ? (ordersSortDirection === 'asc' ? '\u2191' : '\u2193') : '';
    });
    loadRunOrders(currentRunId, null, 1);
}

// ── Text Log (collapsible) ──────────────────────

function toggleTextLog() {
    const section = document.getElementById('textLogSection');
    section.style.display = section.style.display === 'none' ? '' : 'none';
    if (section.style.display !== 'none' && currentRunId) {
        fetchTextLog(currentRunId);
    }
}

async function fetchTextLog(runId) {
    // Clear any existing poll timer to prevent accumulation
    if (logPollTimer) { clearInterval(logPollTimer); logPollTimer = null; }

    try {
        const res = await fetch(`/api/sync/run/${encodeURIComponent(runId)}/text-log`);
        if (!res.ok) throw new Error('HTTP ' + res.status);
        const data = await res.json();

        document.getElementById('logContent').textContent = data.text || '(log gol)';

        if (!data.finished) {
            if (document.getElementById('autoRefreshToggle')?.checked) {
                logPollTimer = setInterval(async () => {
                    try {
                        const r = await fetch(`/api/sync/run/${encodeURIComponent(runId)}/text-log`);
                        const d = await r.json();
                        if (currentRunId !== runId) { clearInterval(logPollTimer); return; }
                        document.getElementById('logContent').textContent = d.text || '(log gol)';
                        const el = document.getElementById('logContent');
                        el.scrollTop = el.scrollHeight;
                        if (d.finished) {
                            clearInterval(logPollTimer);
                            logPollTimer = null;
                            loadRuns();
                            loadRunOrders(runId, currentFilter, ordersPage);
                        }
                    } catch (e) { console.error('Poll error:', e); }
                }, 2500);
            }
        }
    } catch (err) {
        document.getElementById('logContent').textContent = 'Eroare: ' + err.message;
    }
}

// ── Multi-CODMAT helper (D1) ─────────────────────

function renderCodmatCell(item) {
    if (!item.codmat_details || item.codmat_details.length === 0) {
        return `<code>${esc(item.codmat || '-')}</code>`;
    }
    if (item.codmat_details.length === 1) {
        const d = item.codmat_details[0];
        return `<code>${esc(d.codmat)}</code>`;
    }
    // Multi-CODMAT: compact list
    return item.codmat_details.map(d =>
        `<div class="small"><code>${esc(d.codmat)}</code> <span class="text-muted">\xd7${d.cantitate_roa}</span></div>`
    ).join('');
}

// ── Order Detail Modal (R9) ─────────────────────

async function openOrderDetail(orderNumber) {
    document.getElementById('detailOrderNumber').textContent = '#' + orderNumber;
    document.getElementById('detailCustomer').textContent = '...';
    document.getElementById('detailDate').textContent = '';
    document.getElementById('detailStatus').innerHTML = '';
    document.getElementById('detailIdComanda').textContent = '-';
    document.getElementById('detailIdPartener').textContent = '-';
    document.getElementById('detailIdAdresaFact').textContent = '-';
    document.getElementById('detailIdAdresaLivr').textContent = '-';
    document.getElementById('detailItemsBody').innerHTML = '<tr><td colspan="6" class="text-center">Se incarca...</td></tr>';
    document.getElementById('detailError').style.display = 'none';
    const detailItemsTotal = document.getElementById('detailItemsTotal');
    if (detailItemsTotal) detailItemsTotal.textContent = '-';
    const detailOrderTotal = document.getElementById('detailOrderTotal');
    if (detailOrderTotal) detailOrderTotal.textContent = '-';
    const mobileContainer = document.getElementById('detailItemsMobile');
    if (mobileContainer) mobileContainer.innerHTML = '';

    const modalEl = document.getElementById('orderDetailModal');
    const existing = bootstrap.Modal.getInstance(modalEl);
    if (existing) { existing.show(); } else { new bootstrap.Modal(modalEl).show(); }

    try {
        const res = await fetch(`/api/sync/order/${encodeURIComponent(orderNumber)}`);
        const data = await res.json();

        if (data.error) {
            document.getElementById('detailError').textContent = data.error;
            document.getElementById('detailError').style.display = '';
            return;
        }

        const order = data.order || {};
        document.getElementById('detailCustomer').textContent = order.customer_name || '-';
        document.getElementById('detailDate').textContent = fmtDate(order.order_date);
        document.getElementById('detailStatus').innerHTML = orderStatusBadge(order.status);
        document.getElementById('detailIdComanda').textContent = order.id_comanda || '-';
        document.getElementById('detailIdPartener').textContent = order.id_partener || '-';
        document.getElementById('detailIdAdresaFact').textContent = order.id_adresa_facturare || '-';
        document.getElementById('detailIdAdresaLivr').textContent = order.id_adresa_livrare || '-';

        if (order.error_message) {
            document.getElementById('detailError').textContent = order.error_message;
            document.getElementById('detailError').style.display = '';
        }

        const dlvEl = document.getElementById('detailDeliveryCost');
        if (dlvEl) dlvEl.textContent = order.delivery_cost > 0 ? Number(order.delivery_cost).toFixed(2) + ' lei' : '–';

        const dscEl = document.getElementById('detailDiscount');
        if (dscEl) dscEl.textContent = order.discount_total > 0 ? '–' + Number(order.discount_total).toFixed(2) + ' lei' : '–';

        const items = data.items || [];
        if (items.length === 0) {
            document.getElementById('detailItemsBody').innerHTML = '<tr><td colspan="6" class="text-center text-muted">Niciun articol</td></tr>';
            return;
        }

        // Update totals row
        const itemsTotal = items.reduce((sum, item) => sum + (Number(item.price || 0) * Number(item.quantity || 0)), 0);
        document.getElementById('detailItemsTotal').textContent = itemsTotal.toFixed(2) + ' lei';
        document.getElementById('detailOrderTotal').textContent = order.order_total != null ? Number(order.order_total).toFixed(2) + ' lei' : '-';

        // Mobile article flat list
        const mobileContainer = document.getElementById('detailItemsMobile');
        if (mobileContainer) {
            mobileContainer.innerHTML = '<div class="detail-item-flat">' + items.map((item, idx) => {
                const codmatList = item.codmat_details?.length
                    ? item.codmat_details.map(d => `<span class="dif-codmat-link" onclick="openLogsQuickMap('${esc(item.sku)}','${esc(item.product_name||'')}','${esc(orderNumber)}')">${esc(d.codmat)}</span>`).join(' ')
                    : `<span class="dif-codmat-link" onclick="openLogsQuickMap('${esc(item.sku)}','${esc(item.product_name||'')}','${esc(orderNumber)}')">${esc(item.codmat || '–')}</span>`;
                const valoare = (Number(item.price || 0) * Number(item.quantity || 0)).toFixed(2);
                return `<div class="dif-item">
                    <div class="dif-row">
                        <span class="dif-sku">${esc(item.sku)}</span>
                        ${codmatList}
                    </div>
                    <div class="dif-row">
                        <span class="dif-name">${esc(item.product_name || '–')}</span>
                        <span class="dif-qty">x${item.quantity || 0}</span>
                        <span class="dif-val">${valoare} lei</span>
                    </div>
                </div>`;
            }).join('') + '</div>';
        }

        document.getElementById('detailItemsBody').innerHTML = items.map(item => {
            const valoare = (Number(item.price || 0) * Number(item.quantity || 0)).toFixed(2);
            const codmatCell = `<span class="codmat-link" onclick="openLogsQuickMap('${esc(item.sku)}', '${esc(item.product_name || '')}', '${esc(orderNumber)}')" title="Click pentru mapare">${renderCodmatCell(item)}</span>`;
            return `<tr>
                <td><code>${esc(item.sku)}</code></td>
                <td>${esc(item.product_name || '-')}</td>
                <td>${codmatCell}</td>
                <td>${item.quantity || 0}</td>
                <td>${item.price != null ? Number(item.price).toFixed(2) : '-'}</td>
                <td class="text-end">${valoare}</td>
            </tr>`;
        }).join('');
    } catch (err) {
        document.getElementById('detailError').textContent = err.message;
        document.getElementById('detailError').style.display = '';
    }
}

// ── Quick Map Modal (uses shared openQuickMap) ───

function openLogsQuickMap(sku, productName, orderNumber) {
    openQuickMap({
        sku,
        productName,
        onSave: () => {
            if (orderNumber) openOrderDetail(orderNumber);
            loadRunOrders(currentRunId, currentFilter, ordersPage);
        }
    });
}

// ── Init ────────────────────────────────────────

document.addEventListener('DOMContentLoaded', () => {
    loadRuns();

    document.querySelectorAll('#orderFilterPills .filter-pill').forEach(btn => {
        btn.addEventListener('click', function() {
            filterOrders(this.dataset.logStatus || 'all');
        });
    });

    const preselected = document.getElementById('preselectedRun');
    const urlParams = new URLSearchParams(window.location.search);
    const runFromUrl = urlParams.get('run') || (preselected ? preselected.value : '');
    if (runFromUrl) {
        selectRun(runFromUrl);
    }

    document.getElementById('autoRefreshToggle')?.addEventListener('change', (e) => {
        if (e.target.checked) {
            // Resume polling if we have an active run
            if (currentRunId) fetchTextLog(currentRunId);
        } else {
            // Pause polling
            if (logPollTimer) { clearInterval(logPollTimer); logPollTimer = null; }
        }
    });

    document.getElementById('autoRefreshToggleMobile')?.addEventListener('change', (e) => {
        const desktop = document.getElementById('autoRefreshToggle');
        if (desktop) desktop.checked = e.target.checked;
        desktop?.dispatchEvent(new Event('change'));
    });
});