let currentPage = 1;
let currentSearch = '';
let searchTimeout = null;
let sortColumn = 'sku';
let sortDirection = 'asc';
let editingMapping = null; // {sku, codmat} when editing
let pctFilter = 'all';

// Load on page ready
document.addEventListener('DOMContentLoaded', () => {
    loadMappings();
    initAddModal();
    initDeleteModal();
    initPctFilterPills();
});

function debounceSearch() {
    clearTimeout(searchTimeout);
    searchTimeout = setTimeout(() => {
        currentSearch = document.getElementById('searchInput').value;
        currentPage = 1;
        loadMappings();
    }, 300);
}

// ── Sorting (R7) ─────────────────────────────────

function sortBy(col) {
    if (sortColumn === col) {
        sortDirection = sortDirection === 'asc' ? 'desc' : 'asc';
    } else {
        sortColumn = col;
        sortDirection = 'asc';
    }
    currentPage = 1;
    loadMappings();
}

function updateSortIcons() {
    document.querySelectorAll('.sort-icon').forEach(span => {
        const col = span.dataset.col;
        if (col === sortColumn) {
            span.textContent = sortDirection === 'asc' ? '\u2191' : '\u2193';
        } else {
            span.textContent = '';
        }
    });
}

// ── Pct Filter Pills ─────────────────────────────

function initPctFilterPills() {
    document.querySelectorAll('.filter-pill[data-pct]').forEach(btn => {
        btn.addEventListener('click', function() {
            document.querySelectorAll('.filter-pill[data-pct]').forEach(b => b.classList.remove('active'));
            this.classList.add('active');
            pctFilter = this.dataset.pct;
            currentPage = 1;
            loadMappings();
        });
    });
}

function updatePctCounts(counts) {
    if (!counts) return;
    const elAll = document.getElementById('mCntAll');
    const elComplete = document.getElementById('mCntComplete');
    const elIncomplete = document.getElementById('mCntIncomplete');
    if (elAll) elAll.textContent = counts.total || 0;
    if (elComplete) elComplete.textContent = counts.complete || 0;
    if (elIncomplete) elIncomplete.textContent = counts.incomplete || 0;
}

// ── Load & Render ────────────────────────────────

async function loadMappings() {
    const showInactive = document.getElementById('showInactive')?.checked;
    const showDeleted = document.getElementById('showDeleted')?.checked;
    const params = new URLSearchParams({
        search: currentSearch,
        page: currentPage,
        per_page: 50,
        sort_by: sortColumn,
        sort_dir: sortDirection
    });
    if (showDeleted) params.set('show_deleted', 'true');
    if (pctFilter && pctFilter !== 'all') params.set('pct_filter', pctFilter);

    try {
        const res = await fetch(`/api/mappings?${params}`);
        const data = await res.json();

        let mappings = data.mappings || [];

        // Client-side filter for inactive unless toggle is on
        // (keep deleted rows visible when showDeleted is on, even if inactive)
        if (!showInactive) {
            mappings = mappings.filter(m => m.activ || m.sters);
        }

        updatePctCounts(data.counts);
        renderTable(mappings, showDeleted);
        renderPagination(data);
        updateSortIcons();
    } catch (err) {
        document.getElementById('mappingsBody').innerHTML =
            `<tr><td colspan="9" class="text-center text-danger">Eroare: ${err.message}</td></tr>`;
    }
}

function renderTable(mappings, showDeleted) {
    const tbody = document.getElementById('mappingsBody');

    if (!mappings || mappings.length === 0) {
        tbody.innerHTML = '<tr><td colspan="9" class="text-center text-muted py-4">Nu exista mapari</td></tr>';
        return;
    }

    // Group by SKU for visual grouping (R6)
    let html = '';
    let prevSku = null;
    let groupIdx = 0;
    let skuGroupCounts = {};

    // Count items per SKU
    mappings.forEach(m => {
        skuGroupCounts[m.sku] = (skuGroupCounts[m.sku] || 0) + 1;
    });

    mappings.forEach((m, i) => {
        const isNewGroup = m.sku !== prevSku;
        if (isNewGroup) groupIdx++;
        const groupClass = groupIdx % 2 === 0 ? 'sku-group-even' : 'sku-group-odd';
        const isMulti = skuGroupCounts[m.sku] > 1;
        const inactiveClass = !m.activ && !m.sters ? 'table-secondary opacity-75' : '';
        const deletedClass = m.sters ? 'mapping-deleted' : '';

        // SKU cell: show only on first row of group
        let skuCell, productCell;
        if (isNewGroup) {
            const badge = isMulti ? ` <span class="badge bg-info">Set (${skuGroupCounts[m.sku]})</span>` : '';
            // Percentage total badge
            let pctBadge = '';
            if (m.pct_total !== undefined) {
                if (m.is_complete) {
                    pctBadge = ` <span class="badge-pct complete" title="100% alocat">&#10003; 100%</span>`;
                } else {
                    const pctVal = typeof m.pct_total === 'number' ? m.pct_total.toFixed(2) : m.pct_total;
                    pctBadge = ` <span class="badge-pct incomplete" title="${pctVal}% alocat">&#9888; ${pctVal}%</span>`;
                }
            }
            skuCell = `<td rowspan="${isMulti ? skuGroupCounts[m.sku] : 1}"><strong>${esc(m.sku)}</strong>${badge}${pctBadge}</td>`;
            productCell = `<td rowspan="${isMulti ? skuGroupCounts[m.sku] : 1}">${esc(m.product_name || '-')}</td>`;
        } else {
            skuCell = '';
            productCell = '';
        }

        html += `<tr class="${groupClass} ${inactiveClass} ${deletedClass}">
            ${skuCell}
            ${productCell}
            <td><code>${esc(m.codmat)}</code></td>
            <td>${esc(m.denumire || '-')}</td>
            <td>${esc(m.um || '-')}</td>
            <td class="${m.sters ? '' : 'editable'}" ${m.sters ? '' : `onclick="editCell(this, '${esc(m.sku)}', '${esc(m.codmat)}', 'cantitate_roa', ${m.cantitate_roa})"`}>${m.cantitate_roa}</td>
            <td class="${m.sters ? '' : 'editable'}" ${m.sters ? '' : `onclick="editCell(this, '${esc(m.sku)}', '${esc(m.codmat)}', 'procent_pret', ${m.procent_pret})"`}>${m.procent_pret}%</td>
            <td>
                <span class="badge ${m.activ ? 'bg-success' : 'bg-secondary'}" ${m.sters ? '' : 'style="cursor:pointer"'}
                      ${m.sters ? '' : `onclick="toggleActive('${esc(m.sku)}', '${esc(m.codmat)}', ${m.activ})"`}>
                    ${m.activ ? 'Activ' : 'Inactiv'}
                </span>
            </td>
            <td>
                ${m.sters ? `<button class="btn btn-sm btn-outline-success" onclick="restoreMapping('${esc(m.sku)}', '${esc(m.codmat)}')" title="Restaureaza"><i class="bi bi-arrow-counterclockwise"></i></button>` : `
                <button class="btn btn-sm btn-outline-secondary me-1" onclick="openEditModal('${esc(m.sku)}', '${esc(m.codmat)}', ${m.cantitate_roa}, ${m.procent_pret})" title="Editeaza">
                    <i class="bi bi-pencil"></i>
                </button>
                <button class="btn btn-sm btn-outline-danger" onclick="deleteMappingConfirm('${esc(m.sku)}', '${esc(m.codmat)}')" title="Sterge">
                    <i class="bi bi-trash"></i>
                </button>`}
            </td>
        </tr>`;

        prevSku = m.sku;
    });

    tbody.innerHTML = html;
}

function renderPagination(data) {
    const info = document.getElementById('pageInfo');
    info.textContent = `${data.total} mapari | Pagina ${data.page} din ${data.pages || 1}`;

    const ul = document.getElementById('pagination');
    if (data.pages <= 1) { ul.innerHTML = ''; return; }

    let html = '';
    html += `<li class="page-item ${data.page <= 1 ? 'disabled' : ''}">
        <a class="page-link" href="#" onclick="goPage(${data.page - 1}); return false;">&laquo;</a></li>`;

    let start = Math.max(1, data.page - 3);
    let end = Math.min(data.pages, start + 6);
    start = Math.max(1, end - 6);

    for (let i = start; i <= end; i++) {
        html += `<li class="page-item ${i === data.page ? 'active' : ''}">
            <a class="page-link" href="#" onclick="goPage(${i}); return false;">${i}</a></li>`;
    }

    html += `<li class="page-item ${data.page >= data.pages ? 'disabled' : ''}">
        <a class="page-link" href="#" onclick="goPage(${data.page + 1}); return false;">&raquo;</a></li>`;

    ul.innerHTML = html;
}

function goPage(p) {
    currentPage = p;
    loadMappings();
}

// ── Multi-CODMAT Add Modal (R11) ─────────────────

let acTimeouts = {};

function initAddModal() {
    const modal = document.getElementById('addModal');
    if (!modal) return;

    modal.addEventListener('show.bs.modal', () => {
        if (!editingMapping) {
            clearAddForm();
        }
    });
    modal.addEventListener('hidden.bs.modal', () => {
        editingMapping = null;
        document.getElementById('addModalTitle').textContent = 'Adauga Mapare';
    });
}

function clearAddForm() {
    document.getElementById('inputSku').value = '';
    document.getElementById('inputSku').readOnly = false;
    document.getElementById('addModalProductName').style.display = 'none';
    document.getElementById('pctWarning').style.display = 'none';
    document.getElementById('addModalTitle').textContent = 'Adauga Mapare';
    const container = document.getElementById('codmatLines');
    container.innerHTML = '';
    addCodmatLine();
}

function openEditModal(sku, codmat, cantitate, procent) {
    editingMapping = { sku, codmat };
    document.getElementById('addModalTitle').textContent = 'Editare Mapare';
    document.getElementById('inputSku').value = sku;
    document.getElementById('inputSku').readOnly = false;
    document.getElementById('pctWarning').style.display = 'none';

    const container = document.getElementById('codmatLines');
    container.innerHTML = '';
    addCodmatLine();

    // Pre-fill the CODMAT line
    const line = container.querySelector('.codmat-line');
    if (line) {
        line.querySelector('.cl-codmat').value = codmat;
        line.querySelector('.cl-cantitate').value = cantitate;
        line.querySelector('.cl-procent').value = procent;
    }

    new bootstrap.Modal(document.getElementById('addModal')).show();
}

function addCodmatLine() {
    const container = document.getElementById('codmatLines');
    const idx = container.children.length;
    const div = document.createElement('div');
    div.className = 'border rounded p-2 mb-2 codmat-line';
    div.innerHTML = `
        <div class="row g-2 align-items-center">
            <div class="col position-relative">
                <input type="text" class="form-control form-control-sm cl-codmat" placeholder="Cauta CODMAT..." autocomplete="off" data-idx="${idx}">
                <div class="autocomplete-dropdown d-none cl-ac-dropdown"></div>
                <small class="text-muted cl-selected"></small>
            </div>
            <div class="col-auto" style="width:90px">
                <input type="number" class="form-control form-control-sm cl-cantitate" value="1" step="0.001" min="0.001" placeholder="Cant." title="Cantitate ROA">
            </div>
            <div class="col-auto" style="width:90px">
                <input type="number" class="form-control form-control-sm cl-procent" value="100" step="0.01" min="0" max="100" placeholder="% Pret" title="Procent Pret">
            </div>
            <div class="col-auto">
                ${idx > 0 ? `<button type="button" class="btn btn-sm btn-outline-danger" onclick="this.closest('.codmat-line').remove()"><i class="bi bi-x-lg"></i></button>` : '<div style="width:31px"></div>'}
            </div>
        </div>
    `;
    container.appendChild(div);

    // Setup autocomplete
    const input = div.querySelector('.cl-codmat');
    const dropdown = div.querySelector('.cl-ac-dropdown');
    const selected = div.querySelector('.cl-selected');

    input.addEventListener('input', () => {
        const key = 'cl_' + idx;
        clearTimeout(acTimeouts[key]);
        acTimeouts[key] = setTimeout(() => clAutocomplete(input, dropdown, selected), 250);
    });
    input.addEventListener('blur', () => {
        setTimeout(() => dropdown.classList.add('d-none'), 200);
    });
}

async function clAutocomplete(input, dropdown, selectedEl) {
    const q = input.value;
    if (q.length < 2) { dropdown.classList.add('d-none'); return; }

    try {
        const res = await fetch(`/api/articles/search?q=${encodeURIComponent(q)}`);
        const data = await res.json();
        if (!data.results || data.results.length === 0) { dropdown.classList.add('d-none'); return; }

        dropdown.innerHTML = data.results.map(r =>
            `<div class="autocomplete-item" onmousedown="clSelectArticle(this, '${esc(r.codmat)}', '${esc(r.denumire)}${r.um ? ' (' + esc(r.um) + ')' : ''}')">
                <span class="codmat">${esc(r.codmat)}</span> — <span class="denumire">${esc(r.denumire)}</span>${r.um ? ` <small class="text-muted">(${esc(r.um)})</small>` : ''}
            </div>`
        ).join('');
        dropdown.classList.remove('d-none');
    } catch { dropdown.classList.add('d-none'); }
}

function clSelectArticle(el, codmat, label) {
    const line = el.closest('.codmat-line');
    line.querySelector('.cl-codmat').value = codmat;
    line.querySelector('.cl-selected').textContent = label;
    line.querySelector('.cl-ac-dropdown').classList.add('d-none');
}

async function saveMapping() {
    const sku = document.getElementById('inputSku').value.trim();
    if (!sku) { alert('SKU este obligatoriu'); return; }

    const lines = document.querySelectorAll('.codmat-line');
    const mappings = [];

    for (const line of lines) {
        const codmat = line.querySelector('.cl-codmat').value.trim();
        const cantitate = parseFloat(line.querySelector('.cl-cantitate').value) || 1;
        const procent = parseFloat(line.querySelector('.cl-procent').value) || 100;
        if (!codmat) continue;
        mappings.push({ codmat, cantitate_roa: cantitate, procent_pret: procent });
    }

    if (mappings.length === 0) { alert('Adauga cel putin un CODMAT'); return; }

    // Validate percentage for multi-line
    if (mappings.length > 1) {
        const totalPct = mappings.reduce((s, m) => s + m.procent_pret, 0);
        if (Math.abs(totalPct - 100) > 0.01) {
            document.getElementById('pctWarning').textContent = `Suma procentelor trebuie sa fie 100% (actual: ${totalPct.toFixed(2)}%)`;
            document.getElementById('pctWarning').style.display = '';
            return;
        }
    }
    document.getElementById('pctWarning').style.display = 'none';

    try {
        let res;

        if (editingMapping) {
            // Edit mode: use PUT /api/mappings/{old_sku}/{old_codmat}/edit
            res = await fetch(`/api/mappings/${encodeURIComponent(editingMapping.sku)}/${encodeURIComponent(editingMapping.codmat)}/edit`, {
                method: 'PUT',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    new_sku: sku,
                    new_codmat: mappings[0].codmat,
                    cantitate_roa: mappings[0].cantitate_roa,
                    procent_pret: mappings[0].procent_pret
                })
            });
        } else if (mappings.length === 1) {
            res = await fetch('/api/mappings', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ sku, codmat: mappings[0].codmat, cantitate_roa: mappings[0].cantitate_roa, procent_pret: mappings[0].procent_pret })
            });
        } else {
            res = await fetch('/api/mappings/batch', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ sku, mappings })
            });
        }
        const data = await res.json();
        if (data.success) {
            bootstrap.Modal.getInstance(document.getElementById('addModal')).hide();
            editingMapping = null;
            loadMappings();
        } else if (res.status === 409) {
            handleMappingConflict(data);
        } else {
            alert('Eroare: ' + (data.error || 'Unknown'));
        }
    } catch (err) {
        alert('Eroare: ' + err.message);
    }
}

// ── Inline Add Row ──────────────────────────────

let inlineAddVisible = false;

function showInlineAddRow() {
    if (inlineAddVisible) return;
    inlineAddVisible = true;

    const tbody = document.getElementById('mappingsBody');
    const row = document.createElement('tr');
    row.id = 'inlineAddRow';
    row.className = 'table-info';
    row.innerHTML = `
        <td colspan="2">
            <input type="text" class="form-control form-control-sm" id="inlineSku" placeholder="SKU" style="width:160px">
        </td>
        <td colspan="2" class="position-relative">
            <input type="text" class="form-control form-control-sm" id="inlineCodmat" placeholder="Cauta CODMAT..." autocomplete="off">
            <div class="autocomplete-dropdown d-none" id="inlineAcDropdown"></div>
            <small class="text-muted" id="inlineSelected"></small>
        </td>
        <td>-</td>
        <td>
            <input type="number" class="form-control form-control-sm" id="inlineCantitate" value="1" step="0.001" min="0.001" style="width:80px">
        </td>
        <td>
            <input type="number" class="form-control form-control-sm" id="inlineProcent" value="100" step="0.01" min="0" max="100" style="width:80px">
        </td>
        <td>-</td>
        <td>
            <button class="btn btn-sm btn-success me-1" onclick="saveInlineMapping()" title="Salveaza"><i class="bi bi-check-lg"></i></button>
            <button class="btn btn-sm btn-outline-secondary" onclick="cancelInlineAdd()" title="Anuleaza"><i class="bi bi-x-lg"></i></button>
        </td>
    `;
    tbody.insertBefore(row, tbody.firstChild);
    document.getElementById('inlineSku').focus();

    // Setup autocomplete for inline CODMAT
    const input = document.getElementById('inlineCodmat');
    const dropdown = document.getElementById('inlineAcDropdown');
    const selected = document.getElementById('inlineSelected');
    let inlineAcTimeout = null;

    input.addEventListener('input', () => {
        clearTimeout(inlineAcTimeout);
        inlineAcTimeout = setTimeout(() => inlineAutocomplete(input, dropdown, selected), 250);
    });
    input.addEventListener('blur', () => {
        setTimeout(() => dropdown.classList.add('d-none'), 200);
    });
}

async function inlineAutocomplete(input, dropdown, selectedEl) {
    const q = input.value;
    if (q.length < 2) { dropdown.classList.add('d-none'); return; }
    try {
        const res = await fetch(`/api/articles/search?q=${encodeURIComponent(q)}`);
        const data = await res.json();
        if (!data.results || data.results.length === 0) { dropdown.classList.add('d-none'); return; }
        dropdown.innerHTML = data.results.map(r =>
            `<div class="autocomplete-item" onmousedown="inlineSelectArticle('${esc(r.codmat)}', '${esc(r.denumire)}${r.um ? ' (' + esc(r.um) + ')' : ''}')">
                <span class="codmat">${esc(r.codmat)}</span> — <span class="denumire">${esc(r.denumire)}</span>${r.um ? ` <small class="text-muted">(${esc(r.um)})</small>` : ''}
            </div>`
        ).join('');
        dropdown.classList.remove('d-none');
    } catch { dropdown.classList.add('d-none'); }
}

function inlineSelectArticle(codmat, label) {
    document.getElementById('inlineCodmat').value = codmat;
    document.getElementById('inlineSelected').textContent = label;
    document.getElementById('inlineAcDropdown').classList.add('d-none');
}

async function saveInlineMapping() {
    const sku = document.getElementById('inlineSku').value.trim();
    const codmat = document.getElementById('inlineCodmat').value.trim();
    const cantitate = parseFloat(document.getElementById('inlineCantitate').value) || 1;
    const procent = parseFloat(document.getElementById('inlineProcent').value) || 100;

    if (!sku) { alert('SKU este obligatoriu'); return; }
    if (!codmat) { alert('CODMAT este obligatoriu'); return; }

    try {
        const res = await fetch('/api/mappings', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ sku, codmat, cantitate_roa: cantitate, procent_pret: procent })
        });
        const data = await res.json();
        if (data.success) {
            cancelInlineAdd();
            loadMappings();
        } else if (res.status === 409) {
            handleMappingConflict(data);
        } else {
            alert('Eroare: ' + (data.error || 'Unknown'));
        }
    } catch (err) {
        alert('Eroare: ' + err.message);
    }
}

function cancelInlineAdd() {
    const row = document.getElementById('inlineAddRow');
    if (row) row.remove();
    inlineAddVisible = false;
}

// ── Inline Edit ──────────────────────────────────

function editCell(td, sku, codmat, field, currentValue) {
    if (td.querySelector('input')) return;

    const input = document.createElement('input');
    input.type = 'number';
    input.className = 'form-control form-control-sm';
    input.value = currentValue;
    input.step = field === 'cantitate_roa' ? '0.001' : '0.01';
    input.style.width = '80px';

    const originalText = td.textContent;
    td.textContent = '';
    td.appendChild(input);
    input.focus();
    input.select();

    const save = async () => {
        const newValue = parseFloat(input.value);
        if (isNaN(newValue) || newValue === currentValue) {
            td.textContent = originalText;
            return;
        }
        try {
            const body = {};
            body[field] = newValue;
            const res = await fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}`, {
                method: 'PUT',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify(body)
            });
            const data = await res.json();
            if (data.success) { loadMappings(); }
            else { td.textContent = originalText; alert('Eroare: ' + (data.error || 'Update failed')); }
        } catch (err) { td.textContent = originalText; }
    };

    input.addEventListener('blur', save);
    input.addEventListener('keydown', (e) => {
        if (e.key === 'Enter') save();
        if (e.key === 'Escape') { td.textContent = originalText; }
    });
}

// ── Toggle Active with Toast Undo ────────────────

async function toggleActive(sku, codmat, currentActive) {
    const newActive = currentActive ? 0 : 1;
    try {
        const res = await fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ activ: newActive })
        });
        const data = await res.json();
        if (!data.success) return;

        loadMappings();

        // Show toast with undo
        const action = newActive ? 'activata' : 'dezactivata';
        showUndoToast(`Mapare ${sku} \u2192 ${codmat} ${action}.`, () => {
            fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}`, {
                method: 'PUT',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ activ: currentActive })
            }).then(() => loadMappings());
        });
    } catch (err) { alert('Eroare: ' + err.message); }
}

function showUndoToast(message, undoCallback) {
    document.getElementById('toastMessage').textContent = message;
    const undoBtn = document.getElementById('toastUndoBtn');
    // Clone to remove old listeners
    const newBtn = undoBtn.cloneNode(true);
    undoBtn.parentNode.replaceChild(newBtn, undoBtn);
    newBtn.id = 'toastUndoBtn';
    if (undoCallback) {
        newBtn.style.display = '';
        newBtn.addEventListener('click', () => {
            undoCallback();
            const toastEl = document.getElementById('undoToast');
            const inst = bootstrap.Toast.getInstance(toastEl);
            if (inst) inst.hide();
        });
    } else {
        newBtn.style.display = 'none';
    }
    const toast = new bootstrap.Toast(document.getElementById('undoToast'));
    toast.show();
}

// ── Delete with Modal Confirmation ──────────────

let pendingDelete = null;

function initDeleteModal() {
    const btn = document.getElementById('confirmDeleteBtn');
    if (!btn) return;
    btn.addEventListener('click', async () => {
        if (!pendingDelete) return;
        const { sku, codmat } = pendingDelete;
        try {
            const res = await fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}`, {
                method: 'DELETE'
            });
            const data = await res.json();
            bootstrap.Modal.getInstance(document.getElementById('deleteConfirmModal')).hide();
            if (data.success) loadMappings();
            else alert('Eroare: ' + (data.error || 'Delete failed'));
        } catch (err) {
            bootstrap.Modal.getInstance(document.getElementById('deleteConfirmModal')).hide();
            alert('Eroare: ' + err.message);
        }
        pendingDelete = null;
    });
}

function deleteMappingConfirm(sku, codmat) {
    pendingDelete = { sku, codmat };
    document.getElementById('deleteSkuText').textContent = sku;
    document.getElementById('deleteCodmatText').textContent = codmat;
    new bootstrap.Modal(document.getElementById('deleteConfirmModal')).show();
}

// ── Restore Deleted ──────────────────────────────

async function restoreMapping(sku, codmat) {
    try {
        const res = await fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}/restore`, {
            method: 'POST'
        });
        const data = await res.json();
        if (data.success) loadMappings();
        else alert('Eroare: ' + (data.error || 'Restore failed'));
    } catch (err) {
        alert('Eroare: ' + err.message);
    }
}

// ── CSV ──────────────────────────────────────────

async function importCsv() {
    const fileInput = document.getElementById('csvFile');
    if (!fileInput.files.length) { alert('Selecteaza un fisier CSV'); return; }

    const formData = new FormData();
    formData.append('file', fileInput.files[0]);

    try {
        const res = await fetch('/api/mappings/import-csv', { method: 'POST', body: formData });
        const data = await res.json();
        let msg = `${data.processed} mapări importate`;
        if (data.skipped_no_codmat > 0) {
            msg += `, ${data.skipped_no_codmat} rânduri fără CODMAT omise`;
        }
        let html = `<div class="alert alert-success">${msg}</div>`;
        if (data.errors && data.errors.length > 0) {
            html += `<div class="alert alert-warning">Erori (${data.errors.length}): <ul>${data.errors.map(e => `<li>${esc(e)}</li>`).join('')}</ul></div>`;
        }
        document.getElementById('importResult').innerHTML = html;
        loadMappings();
    } catch (err) {
        document.getElementById('importResult').innerHTML = `<div class="alert alert-danger">${err.message}</div>`;
    }
}

function exportCsv() { window.location.href = '/api/mappings/export-csv'; }
function downloadTemplate() { window.location.href = '/api/mappings/csv-template'; }

// ── Duplicate / Conflict handling ────────────────

function handleMappingConflict(data) {
    const msg = data.error || 'Conflict la salvare';
    if (data.can_restore) {
        const restore = confirm(`${msg}\n\nDoriti sa restaurati maparea stearsa?`);
        if (restore) {
            // Find sku/codmat from the inline row or modal
            const sku = (document.getElementById('inlineSku') || document.getElementById('inputSku'))?.value?.trim();
            const codmat = (document.getElementById('inlineCodmat') || document.querySelector('.cl-codmat'))?.value?.trim();
            if (sku && codmat) {
                fetch(`/api/mappings/${encodeURIComponent(sku)}/${encodeURIComponent(codmat)}/restore`, { method: 'POST' })
                    .then(r => r.json())
                    .then(d => {
                        if (d.success) { cancelInlineAdd(); loadMappings(); }
                        else alert('Eroare la restaurare: ' + (d.error || ''));
                    });
            }
        }
    } else {
        showUndoToast(msg, null);
        // Show non-dismissible inline error
        const warn = document.getElementById('pctWarning');
        if (warn) { warn.textContent = msg; warn.style.display = ''; }
    }
}

function esc(s) {
    if (s == null) return '';
    return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#39;');
}