function toggleSidebar() {
    document.getElementById('sidebar').classList.toggle('open');
}

function showLayer(layerId) {
    document.querySelectorAll('.layer').forEach(layer => {
        layer.classList.remove('active');
    });

    document.getElementById('layer-' + layerId).classList.add('active');

    document.body.className = '';
    document.body.classList.add('theme-' + layerId);

    if (layerId !== 'home') {
        fetchData(layerId);
    }

    toggleSidebar();
}

const planetData = {};
const planetCols = {};

function wireSearch(planetId) {
    const layer = document.getElementById('layer-' + planetId);
    if (!layer) return;
    const input = layer.querySelector('.search-bar input');
    if (!input) return;

    const fresh = input.cloneNode(true);
    input.parentNode.replaceChild(fresh, input);

    fresh.addEventListener('input', () => {
        filterTable(planetId, fresh.value.trim());
    });
}

function filterTable(planetId, query) {
    const tbody = document.getElementById('tbody-' + planetId);
    if (!tbody) return;

    const rows   = Array.from(tbody.querySelectorAll('tr'));
    const cols   = planetCols[planetId] || [];
    const data   = planetData[planetId] || [];

    const titleIndices = cols.reduce((acc, col, i) => {
        const c = col.toLowerCase();
        if (c === 'nom' || c === 'name' || c.includes('title') || c.includes('titre')) {
            acc.push(i);
        }
        return acc;
    }, []);

    const searchIndices = titleIndices.length > 0
        ? titleIndices
        : cols.reduce((acc, col, i) => {
            const c = col.toLowerCase();
            if (!c.includes('url') && !c.includes('desc') && !c.includes('expl') && c !== 'image' && c !== 'img') {
                acc.push(i);
            }
            return acc;
        }, []);

    const tokens = query.toLowerCase().split(/\s+/).filter(Boolean);

    const tableContainer = tbody.closest('.table-container');
    const showMoreBtn    = tableContainer ? tableContainer.querySelector('.show-more-btn') : null;

    if (tokens.length === 0) {
        rows.forEach((tr, index) => {
            tr.style.display = '';
            if (data.length > 10) {
                if (index >= 10) tr.classList.add('hidden-row');
                else             tr.classList.remove('hidden-row');
            }
        });
        if (showMoreBtn) showMoreBtn.style.display = '';
        return;
    }

    if (showMoreBtn) showMoreBtn.style.display = 'none';

    rows.forEach((tr, index) => {
        const rowObj = data[index];
        if (!rowObj) { tr.style.display = 'none'; return; }

        const haystack = searchIndices
            .map(i => String(rowObj[cols[i]] || '').toLowerCase())
            .join(' ');

        const matches = tokens.every(token => haystack.includes(token));

        tr.classList.remove('hidden-row');
        tr.style.display = matches ? '' : 'none';
    });
}

async function fetchData(planetId) {
    const tbody = document.getElementById('tbody-' + planetId);
    if (!tbody) return;

    if (tbody.getAttribute('data-loaded') === 'true') {
        wireSearch(planetId);
        return;
    }

    tbody.innerHTML = '<tr><td colspan="3">Chargement des données depuis la BDD...</td></tr>';

    try {
        const response = await fetch(`api.php?planet=${planetId}`);

        if (!response.ok) {
            const errorData = await response.json().catch(() => ({}));
            throw new Error(errorData.error || `Erreur HTTP: ${response.status}`);
        }

        const data = await response.json();

        tbody.innerHTML = '';

        if (data.length === 0) {
            tbody.innerHTML = '<tr><td colspan="3">Aucune donnée disponible pour le moment.</td></tr>';
            return;
        }

        const columns = Object.keys(data[0]).filter(col => col.toLowerCase() !== 'copyright');

        planetData[planetId] = data;
        planetCols[planetId] = columns;

        const thead = tbody.parentElement.querySelector('thead');
        thead.innerHTML = '<tr>' + columns.map(col => {
            const colLower = col.toLowerCase();
            const isDesc = colLower.includes('desc') || colLower.includes('expl');
            const isUrl  = colLower.includes('url')  || colLower === 'image' || colLower === 'img';

            let className = '';
            if (isDesc)     className = ' class="col-desc"';
            else if (isUrl) className = ' class="col-url"';
            return `<th${className}>${col.toUpperCase()}</th>`;
        }).join('') + '</tr>';

        data.forEach((row, index) => {
            const tr = document.createElement('tr');

            if (index >= 10) tr.classList.add('hidden-row');

            let rowHtml = '';
            columns.forEach(col => {
                const colLower = col.toLowerCase();
                if (colLower.includes('url') || colLower === 'image' || colLower === 'img') {
                    const url = row[col];
                    if (url && url.trim() !== '') {
                        rowHtml += `<td class="col-url">
                            <a href="${url}" target="_blank" rel="noopener noreferrer">
                                ${url}
                            </a>
                        </td>`;
                    } else {
                        rowHtml += `<td class="col-url">N/A</td>`;
                    }
                } else if (colLower.includes('desc') || colLower.includes('expl')) {
                    const text = row[col] || '';
                    let fontSizeStyle = '';
                    if (text.length > 200)      fontSizeStyle = ' font-size: 0.75rem;';
                    else if (text.length > 100) fontSizeStyle = ' font-size: 0.85rem;';
                    rowHtml += `<td class="col-desc" style="${fontSizeStyle}">${text}</td>`;
                } else {
                    rowHtml += `<td>${row[col]}</td>`;
                }
            });

            tr.innerHTML = rowHtml;
            tbody.appendChild(tr);
        });

        const tableContainer = tbody.closest('.table-container');
        const existingBtn = tableContainer.querySelector('.show-more-btn');
        if (existingBtn) existingBtn.remove();

        if (data.length > 10) {
            const btn = document.createElement('button');
            btn.innerHTML = 'Voir la suite ⬇';
            btn.className = 'show-more-btn';
            btn.onclick = () => {
                tbody.querySelectorAll('.hidden-row').forEach(row => row.classList.remove('hidden-row'));
                btn.remove();
            };
            tableContainer.appendChild(btn);
        }

        tbody.setAttribute('data-loaded', 'true');

        wireSearch(planetId);

    } catch (error) {
        console.error("Erreur de connexion à la BDD :", error);
        tbody.innerHTML = `<tr><td colspan="3" style="color: #ff4444;">Erreur technique : ${error.message}</td></tr>`;
    }
}