// Initialize documents array
let documents = [];
let isAuthenticated = false;
let editingDocumentId = null;
let selectedFile = null;
// Sample data from PDF
const pdfData = [
    {
        "number": "1",
        "title": "Политика в области качества и пищевой безопасности АО «ПРОГРЕСС»",
        "code": "",
        "approvalDate": "2025-08-04",
        "scope": "Все подразделения АО \"ПРОГРЕСС\", г. Липецк",
        "url": "",
        "location": ""
    }
];
// Initialize PDF data if localStorage is empty
function initializePdfData() {
    const savedDocuments = localStorage.getItem('documents');
    if (!savedDocuments && pdfData.length > 0) {
        documents = pdfData.map((doc, index) => ({
            id: Date.now() + index,  // Unique ID based on timestamp
            ...doc
        }));
        saveToLocalStorage();
        showNotification('Данные из PDF успешно загружены!');
        renderDocuments();
    }
}
// Calculate update date (3 years from approval)
function calculateUpdateDate(approvalDate) {
    const date = new Date(approvalDate);
    date.setFullYear(date.getFullYear() + 3);
    return date;
}

// Get document status based on approval date
function getDocumentStatus(approvalDate) {
    const updateDate = calculateUpdateDate(approvalDate);
    const today = new Date();
    const timeDiff = updateDate.getTime() - today.getTime();
    const daysDiff = Math.ceil(timeDiff / (1000 * 3600 * 24));
    const monthsDiff = Math.floor(daysDiff / 30);
    
    if (daysDiff <= 0) {
        return { status: 'expired', days: daysDiff, months: monthsDiff };
    } else if (monthsDiff <= 3) {
        return { status: 'danger', days: daysDiff, months: monthsDiff };
    } else if (monthsDiff <= 6) {
        return { status: 'warning', days: daysDiff, months: monthsDiff };
    } else {
        return { status: 'normal', days: daysDiff, months: monthsDiff };
    }
}

// Get status text and class
function getStatusText(statusInfo) {
    switch (statusInfo.status) {
        case 'expired':
            return { 
                text: 'ПРОСРОЧЕН', 
                class: 'expired', 
                fullText: 'Документ требует срочной актуализации! Просрочен.' 
            };
        case 'danger':
            return { 
                text: `${statusInfo.months} мес.`, 
                class: 'danger', 
                fullText: `Срочная актуализация! Осталось ${statusInfo.months} месяцев (${statusInfo.days} дней)` 
            };
        case 'warning':
            return { 
                text: `${statusInfo.months} мес.`, 
                class: 'warning', 
                fullText: `Требуется актуализация в ближайшее время. Осталось ${statusInfo.months} месяцев` 
            };
        default:
            return { 
                text: `Актуален`, 
                class: 'normal', 
                fullText: `Документ актуален. Актуализация через ${statusInfo.months} месяцев` 
            };
    }
}

// Save to localStorage
function saveToLocalStorage() {
    localStorage.setItem('documents', JSON.stringify(documents));
}
// Load from localStorage
function loadFromLocalStorage() {
    try {
        const savedDocuments = localStorage.getItem('documents');
        if (savedDocuments) {
            documents = JSON.parse(savedDocuments);
        } else {
            documents = [];
            saveToLocalStorage();
        }
    } catch (e) {
        console.error('Error loading documents:', e);
        documents = [];
        saveToLocalStorage();
    }
    renderDocuments();
}
// Render documents list
function renderDocuments() {
    const container = document.getElementById('documentsContainer');
    const emptyState = document.getElementById('emptyState');
    
    if (!container || !emptyState) return;
    
    // Clear existing documents (keep header and empty state)
    const header = container.querySelector('.grid.bg-gray-800');
    container.innerHTML = '';
    if (header) container.appendChild(header);
    if (emptyState) container.appendChild(emptyState);
    if (!documents || documents.length === 0) {
        emptyState.classList.remove('hidden');
        return;
    }
    
    emptyState.classList.add('hidden');
    
    if (!Array.isArray(documents)) {
        console.error('Documents is not an array');
        return;
    }
    // Sort documents by status priority
    const sortedDocuments = [...documents].sort((a, b) => {
        try {
            const statusA = getDocumentStatus(a.approvalDate);
            const statusB = getDocumentStatus(b.approvalDate);
            const priority = { 'expired': 0, 'danger': 1, 'warning': 2, 'normal': 3 };
            return priority[statusA.status] - priority[statusB.status];
        } catch (e) {
            console.error('Error sorting documents:', e);
            return 0;
        }
    });
    // Render each document
    sortedDocuments.forEach(doc => {
        try {
            if (!doc.approvalDate) {
                console.warn('Document missing approvalDate:', doc);
                return;
            }
            
            const statusInfo = getDocumentStatus(doc.approvalDate);
            const statusText = getStatusText(statusInfo);
const row = document.createElement('div');
        row.className = 'document-row';
        row.innerHTML = `
            <div class="col-span-1 font-medium">${doc.number}</div>
            <div class="col-span-5">${doc.title}</div>
            <div class="col-span-2 text-gray-600">${doc.code || '-'}</div>
            <div class="col-span-2">${doc.approvalDate}</div>
            <div class="col-span-2">
                <span class="status-indicator ${statusText.class}"></span>
                <span class="text-sm">${statusText.text}</span>
            </div>
            
            <div class="document-details">
                <div class="mb-2"><span class="font-medium">Область действия:</span> ${doc.scope}</div>
                <div class="mb-2"><span class="font-medium">Место хранения:</span> ${doc.location || 'Не указано'}</div>
                <div class="p-2 rounded bg-gray-100 mb-2 text-sm">