/* ─── BOM Detail Expansion ─── */
function renderBomDetails(b) {
    let html = '<div class="bom-expand-content">';

    if (b.cutTemplate) {
        const ct = b.cutTemplate;
        const displayName = ct.dxfFilePath?.split(/[/\\]/).pop() || '';
        html += `
            <div class="bom-section-title">${icons.laser} Cut Template</div>
            <div class="info-grid">
                <div class="info-item"><span class="lbl">File</span><span class="val">${esc(displayName)}</span></div>
                <div class="info-item"><span class="lbl">Thickness</span><span class="val">${fmtThickness(ct.thickness)}</span></div>
                <div class="info-item"><span class="lbl">K-Factor</span><span class="val">${ct.kFactor != null ? ct.kFactor : '\u2014'}</span></div>
                <div class="info-item"><span class="lbl">Bend Radius</span><span class="val">${ct.defaultBendRadius != null ? ct.defaultBendRadius.toFixed(4) + '"' : '\u2014'}</span></div>
            </div>`;

        if (ct.contentHash) {
            html += `<div style="margin-top:10px">
                <a class="btn btn-cyan btn-sm" href="/api/files/blob/${encodeURIComponent(ct.contentHash)}?ext=dxf&download=true&name=${encodeURIComponent(displayName)}" onclick="event.stopPropagation()">${icons.download} Download DXF</a>
                <span style="font-family:var(--font-mono);font-size:13px;color:var(--text-dim);margin-left:8px">${esc(displayName)}</span>
            </div>`;
        }
    }

    if (b.formProgram) {
        const fp = b.formProgram;
        html += `
            <div class="bom-section-title">${icons.bend} Form Program</div>
            <div class="info-grid">
                <div class="info-item"><span class="lbl">Program</span><span class="val">${esc(fp.programName)}</span></div>
                <div class="info-item"><span class="lbl">Thickness</span><span class="val">${fmtThickness(fp.thickness)}</span></div>
                <div class="info-item"><span class="lbl">Material</span><span class="val">${esc(fp.materialType)}</span></div>
                <div class="info-item"><span class="lbl">K-Factor</span><span class="val">${fp.kFactor != null ? fp.kFactor : '\u2014'}</span></div>
                <div class="info-item"><span class="lbl">Bends</span><span class="val">${fp.bendCount}</span></div>
                <div class="info-item"><span class="lbl">Upper Tools</span><span class="val">${esc(fp.upperToolNames) || '\u2014'}</span></div>
                <div class="info-item"><span class="lbl">Lower Tools</span><span class="val">${esc(fp.lowerToolNames) || '\u2014'}</span></div>
            </div>
            ${fp.setupNotes ? `<div style="margin-top:8px;padding:8px 12px;background:var(--amber-dim);border-radius:4px;font-size:13px;font-family:var(--font-mono);color:var(--amber)"><span class="lbl">Setup Notes</span>${esc(fp.setupNotes)}</div>` : ''}`;
    }

    html += '</div>';
    return html;
}

function toggleEquipGroup(id) {
    const group = document.getElementById(id);
    const icon = document.getElementById(id + '-icon');
    if (!group) return;
    group.classList.toggle('collapsed');
    if (icon) icon.classList.toggle('open', !group.classList.contains('collapsed'));
}

function toggleBomRow(id) {
    const row = document.getElementById(id);
    const icon = document.getElementById(id + '-icon');
    if (!row) return;
    const visible = row.style.display !== 'none';
    row.style.display = visible ? 'none' : '';
    if (icon) icon.classList.toggle('open', !visible);
}

/* ─── Cut List Modal ─── */
function showCutListModal(bomItems) {
    const cutItems = bomItems.filter(b => b.cutTemplate);
    if (cutItems.length === 0) {
        showToast('No cut templates found');
        return;
    }

    const rows = cutItems.map(b => {
        const ct = b.cutTemplate;
        const name = ct.cutTemplateName || ct.dxfFilePath?.split(/[/\\]/).pop()?.replace(/\.dxf$/i, '') || b.partName || '';
        const qty = b.qty ?? '';
        return { name, qty };
    });

    const tableRows = rows.map((r, i) => `
        <tr style="animation: fadeSlideIn 0.15s ease ${0.02 * i}s forwards; opacity: 0">
            <td style="font-family:var(--font-mono);font-weight:600">${esc(r.name)}</td>
            <td style="font-family:var(--font-mono);text-align:center">${r.qty}</td>
        </tr>`).join('');

    // Remove existing modal if any
    const existing = document.getElementById('cut-list-modal');
    if (existing) existing.remove();

    const modal = document.createElement('div');
    modal.id = 'cut-list-modal';
    modal.className = 'modal-overlay';
    modal.innerHTML = `
        <div class="modal-panel">
            <div class="modal-header">
                <span>${icons.laser} Cut List</span>
                <span class="badge badge-count">${cutItems.length} templates</span>
                <span style="margin-left:auto;display:flex;gap:6px">
                    <button class="btn btn-cyan btn-sm" onclick="copyCutList()" id="copy-cut-list-btn">${icons.clipboard} Copy</button>
                    <button class="btn btn-sm" onclick="closeCutListModal()">${icons.close}</button>
                </span>
            </div>
            <div class="modal-body">
                <table>
                    <thead><tr>
                        <th>Name</th>
                        <th style="width:60px;text-align:center">Qty</th>
                    </tr></thead>
                    <tbody>${tableRows}</tbody>
                </table>
            </div>
        </div>`;

    document.body.appendChild(modal);
    // Store data for copy
    modal._cutData = rows;
    // Close on backdrop click
    modal.addEventListener('click', e => { if (e.target === modal) closeCutListModal(); });
    // Close on Escape
    modal._keyHandler = e => { if (e.key === 'Escape') closeCutListModal(); };
    document.addEventListener('keydown', modal._keyHandler);
}

function closeCutListModal() {
    const modal = document.getElementById('cut-list-modal');
    if (!modal) return;
    document.removeEventListener('keydown', modal._keyHandler);
    modal.remove();
}

function copyCutList() {
    const modal = document.getElementById('cut-list-modal');
    if (!modal || !modal._cutData) return;

    const text = modal._cutData.map(r => `${r.name}\t${r.qty}`).join('\n');

    navigator.clipboard.writeText(text).then(() => {
        const btn = document.getElementById('copy-cut-list-btn');
        if (btn) {
            btn.innerHTML = `${icons.check} Copied!`;
            btn.classList.remove('btn-cyan');
            btn.classList.add('btn-green');
            setTimeout(() => {
                btn.innerHTML = `${icons.clipboard} Copy`;
                btn.classList.remove('btn-green');
                btn.classList.add('btn-cyan');
            }, 2000);
        }
    });
}

function showToast(msg) {
    const t = document.createElement('div');
    t.className = 'toast';
    t.textContent = msg;
    document.body.appendChild(t);
    setTimeout(() => t.remove(), 2500);
}