/**
 * V.AI STUDIO - EXCEL FIX CLICK HANDLER
 * ĐẶT NGAY SAU THẺ MỞ BODY
 * SỬA LỖI CLICK KHÔNG HOẠT ĐỘNG
 */
(function(){
'use strict';

// Registry blob toàn cục
window.__VAI_BLOB_ALL = window.__VAI_BLOB_ALL || { blobs: [], isUn: false };
var REG = window.__VAI_BLOB_ALL;

// Cleanup
function cleanup() { REG.isUn = true; REG.blobs.forEach(function(e) { try { URL.revokeObjectURL(e.url); } catch(r) {} }); REG.blobs = []; }
window.addEventListener('pagehide', cleanup);
window.addEventListener('beforeunload', cleanup);

// PATCH URL.revokeObjectURL NGAY
if (!window.__VAI_REV_DONE) {
    var _o = URL.revokeObjectURL;
    URL.revokeObjectURL = function(u) {
        if (REG.isUn || !u || typeof u !== 'string' || u.indexOf('blob:') !== 0) return _o.call(this, u);
        var exist = REG.blobs.find(function(e) { return e.url === u; });
        if (!exist) REG.blobs.push({ url: u, revoked: false });
        return;
    };
    window.__VAI_REV_DONE = true;
}

// Helper
function dl(blob, name) {
    var url = URL.createObjectURL(blob);
    REG.blobs.push({ url: url });
    var a = document.createElement('a');
    a.href = url; a.download = name; a.style.cssText = 'position:absolute;left:-9999px';
    document.body.appendChild(a);
    a.click();
    setTimeout(function() { try { document.body.removeChild(a); } catch(r) {} }, 100);
}

// Click handler NGAY
document.addEventListener('click', function(e) {
    var btn = e.target.closest('button, a');
    if (!btn) return;
    
    var txt = (btn.textContent || '').toLowerCase();
    var activeEl = document.activeElement;
    
    // Xử lý Excel báo giá
    if (txt.includes('excel') && !txt.includes('gh') && !txt.includes('giao hàng')) {
        e.preventDefault();
        e.stopPropagation();
        
        // Tránh double click
        if (activeEl && activeEl.dataset.vaiExporting === '1') return;
        
        // Set state
        if (activeEl) {
            activeEl.dataset.vaiExporting = '1';
            activeEl.dataset.vaiHTML = activeEl.innerHTML;
            activeEl.innerHTML = '<span style="opacity:0.7">⏳</span>';
        }
        
        // Export
        setTimeout(function() {
            if (typeof window.exportExcel === 'function') {
                window.exportExcel().then(function() {
                    if (activeEl) {
                        activeEl.dataset.vaiExporting = '0';
                        activeEl.innerHTML = activeEl.dataset.vaiHTML || '💾 Excel';
                    }
                    if (typeof showToast === 'function') showToast('✅ Excel OK');
                }).catch(function(err) {
                    if (activeEl) {
                        activeEl.dataset.vaiExporting = '0';
                        activeEl.innerHTML = activeEl.dataset.vaiHTML || '💾 Excel';
                    }
                    alert('❌ Lỗi: ' + (err && err.message ? err.message : err));
                });
            } else {
                // Tự động tạo exportExcel nếu chưa có
                console.log('[VAI] Export function not ready, waiting...');
                var wait = setInterval(function() {
                    if (typeof window.exportExcel === 'function') {
                        clearInterval(wait);
                        window.exportExcel().then(function() {
                            if (activeEl) {
                                activeEl.dataset.vaiExporting = '0';
                                activeEl.innerHTML = activeEl.dataset.vaiHTML || '💾 Excel';
                            }
                        });
                    }
                }, 500);
            }
        }, 10);
        
        return false;
    }
    
    // Xử lý GH Excel
    if ((txt.includes('giao hàng') || txt.includes('gh')) && txt.includes('excel')) {
        e.preventDefault();
        e.stopPropagation();
        
        if (activeEl && activeEl.dataset.vaiExporting === '1') return;
        
        if (activeEl) {
            activeEl.dataset.vaiExporting = '1';
            activeEl.dataset.vaiHTML = activeEl.innerHTML;
            activeEl.innerHTML = '<span style="opacity:0.7">⏳</span>';
        }
        
        setTimeout(function() {
            if (typeof window.exportDeliveryExcel === 'function') {
                window.exportDeliveryExcel().then(function() {
                    if (activeEl) {
                        activeEl.dataset.vaiExporting = '0';
                        activeEl.innerHTML = activeEl.dataset.vaiHTML || 'GH Excel';
                    }
                });
            }
        }, 10);
        
        return false;
    }
}, true);

console.log('[VAI CLICK] Handler attached - Excel click ready');
})();