/**
 * saveAll.js — Save All functionality using gridData
 */
(function() {
    'use strict';

    let saveAllRunning = false;

    function isBusy() {
        return saveAllRunning || window.batchRunning;
    }

    // ── Save single row ──────────────────────────────────────────────────
    $(document).on('click', '.save-btn', async function() {
        const btn = this;
        const rowIndex = parseInt(btn.dataset.row);
        const row = window.gridData?.[rowIndex];
        if (!row) return;

        const origHtml = btn.innerHTML;
        btn.innerHTML = '<i class="fas fa-spinner fa-spin"></i>';
        btn.disabled = true;

        try {
            const formData = window.buildSavePayload(rowIndex);
            const resp = await fetch('save_edited_row.php', { method: 'POST', body: formData });
            const result = await resp.json();

            if (result.success) {
                row._dirty = false;
                if (window.gridRenderer?.clearDirty) window.gridRenderer.clearDirty(rowIndex);
                // Flash success on row without re-rendering (preserves Select2 state)
                const gridRow = document.querySelector(`.grid-row[data-id="${row.iddatadb}"]`);
                if (gridRow) {
                    gridRow.classList.remove('row-dirty');
                    gridRow.querySelectorAll('.grid-cell').forEach(cell => {
                        cell.classList.remove('cell-changed');
                        cell.classList.add('flash-success');
                    });
                    setTimeout(() => gridRow.querySelectorAll('.flash-success').forEach(c => c.classList.remove('flash-success')), 500);
                }
                const toastEl = document.getElementById('saveSuccessToast');
                if (toastEl) bootstrap.Toast.getOrCreateInstance(toastEl).show();
            } else {
                alert('Errore: ' + result.message);
            }
        } catch (e) {
            alert('Errore: ' + e.message);
        } finally {
            btn.innerHTML = origHtml;
            btn.disabled = false;
        }
    });

    // ── Save All ─────────────────────────────────────────────────────────
    $(document).on('click', '.save-all-btn', function(e) {
        e.preventDefault();
        if (isBusy()) return;
        const modalEl = document.getElementById('saveAllConfirmModal');
        if (!modalEl) return;
        new bootstrap.Modal(modalEl, { keyboard: false }).show();
    });

    $(document).on('click', '#saveAllConfirmBtn', async function() {
        const confirmModal = bootstrap.Modal.getInstance(document.getElementById('saveAllConfirmModal'));
        if (confirmModal) confirmModal.hide();
        saveAllRunning = true;

        const bar = document.getElementById('batchExportBar');
        const statusEl = document.getElementById('batchExportStatus');
        const cancelBtn = document.getElementById('exportBatchCancelBtn');
        if (bar) bar.style.display = '';
        if (cancelBtn) cancelBtn.style.display = 'none';
        if (statusEl) statusEl.textContent = 'Saving...';

        const data = window.gridData || [];
        const dirtyRows = data.map((r, i) => r._dirty ? i : -1).filter(i => i >= 0);

        if (dirtyRows.length === 0) {
            saveAllRunning = false;
            if (bar) bar.style.display = 'none';
            const msgEl = document.getElementById('saveAllResultMessage');
            if (msgEl) msgEl.textContent = 'No changes to save.';
            new bootstrap.Modal(document.getElementById('saveAllResultModal')).show();
            return;
        }

        let success = 0, fail = 0;

        for (const idx of dirtyRows) {
            if (statusEl) statusEl.textContent = `Saving ${success + fail + 1} / ${dirtyRows.length}...`;
            try {
                const formData = window.buildSavePayload(idx);
                const resp = await fetch('save_edited_row.php', { method: 'POST', body: formData });
                const result = await resp.json();
                if (result.success) {
                    data[idx]._dirty = false;
                    if (window.gridRenderer?.clearDirty) window.gridRenderer.clearDirty(idx);
                    success++;
                } else {
                    fail++;
                }
            } catch (e) {
                fail++;
            }
        }

        saveAllRunning = false;
        if (bar) bar.style.display = 'none';

        const gr = window.gridRenderer;
        if (gr) gr.renderVisibleRows();

        const msg = `Saved: ${success}` + (fail > 0 ? `, Errors: ${fail}` : '');
        const msgEl = document.getElementById('saveAllResultMessage');
        if (msgEl) msgEl.textContent = msg;
        new bootstrap.Modal(document.getElementById('saveAllResultModal')).show();
    });

    // ── beforeunload ─────────────────────────────────────────────────────
    window.addEventListener('beforeunload', function(e) {
        if (window.gridData && window.gridData.some(r => r._dirty)) {
            e.preventDefault();
            e.returnValue = '';
        }
    });

    // Public
    window.saveAllRunning = () => saveAllRunning;
})();