"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const express_1 = __importDefault(require("express"));
const multer_1 = __importDefault(require("multer"));
const path_1 = __importDefault(require("path"));
const fs_1 = __importDefault(require("fs"));
const database_1 = require("../db/database");
const router = express_1.default.Router();
// Configure multer for file uploads
const storage = multer_1.default.diskStorage({
    destination: (req, file, cb) => {
        const uploadDir = process.env.UPLOAD_DIR || './uploads';
        if (!fs_1.default.existsSync(uploadDir)) {
            fs_1.default.mkdirSync(uploadDir, { recursive: true });
        }
        cb(null, uploadDir);
    },
    filename: (req, file, cb) => {
        const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
        cb(null, file.fieldname + '-' + uniqueSuffix + path_1.default.extname(file.originalname));
    }
});
const upload = (0, multer_1.default)({
    storage,
    limits: {
        fileSize: parseInt(process.env.MAX_FILE_SIZE || '10485760') // 10MB default
    },
    fileFilter: (req, file, cb) => {
        const allowedTypes = ['.pdf', '.docx', '.txt', '.md'];
        const ext = path_1.default.extname(file.originalname).toLowerCase();
        if (allowedTypes.includes(ext)) {
            cb(null, true);
        }
        else {
            cb(new Error('Invalid file type. Only PDF, DOCX, TXT, and MD files are allowed.'));
        }
    }
});
// Get knowledge base documents
router.get('/', async (req, res) => {
    try {
        const { tenantId } = req.user;
        const documents = await database_1.database.query('SELECT id, name, type, source, status, size, created_at, updated_at FROM knowledge_base WHERE tenant_id = ? ORDER BY created_at DESC', [tenantId]);
        res.json({ documents });
    }
    catch (error) {
        console.error('Get knowledge base error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
// Upload document
router.post('/upload', upload.single('document'), async (req, res) => {
    try {
        const { tenantId } = req.user;
        if (!req.file) {
            return res.status(400).json({ error: 'No file uploaded' });
        }
        const { originalname, filename, size, mimetype } = req.file;
        const fileType = path_1.default.extname(originalname).toLowerCase().substring(1);
        // Save to database
        const result = await database_1.database.run('INSERT INTO knowledge_base (tenant_id, name, type, source, status, size, metadata) VALUES (?, ?, ?, ?, ?, ?, ?)', [
            tenantId,
            originalname,
            fileType,
            filename,
            'processing',
            size,
            JSON.stringify({ mimetype, uploadedAt: new Date().toISOString() })
        ]);
        // Log analytics event
        await database_1.database.run('INSERT INTO analytics_events (tenant_id, event_type, event_data) VALUES (?, ?, ?)', [tenantId, 'document_uploaded', JSON.stringify({
                documentId: result.lastID,
                type: fileType,
                size
            })]);
        res.status(201).json({
            id: result.lastID,
            name: originalname,
            type: fileType,
            status: 'processing',
            message: 'Document uploaded successfully'
        });
    }
    catch (error) {
        console.error('Upload document error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
// Add website URL
router.post('/url', async (req, res) => {
    try {
        const { tenantId } = req.user;
        const { url, name } = req.body;
        if (!url) {
            return res.status(400).json({ error: 'URL is required' });
        }
        // Basic URL validation
        try {
            new URL(url);
        }
        catch {
            return res.status(400).json({ error: 'Invalid URL format' });
        }
        const displayName = name || new URL(url).hostname;
        // Save to database
        const result = await database_1.database.run('INSERT INTO knowledge_base (tenant_id, name, type, source, status, metadata) VALUES (?, ?, ?, ?, ?, ?)', [
            tenantId,
            displayName,
            'website',
            url,
            'processing',
            JSON.stringify({ addedAt: new Date().toISOString() })
        ]);
        // Log analytics event
        await database_1.database.run('INSERT INTO analytics_events (tenant_id, event_type, event_data) VALUES (?, ?, ?)', [tenantId, 'website_added', JSON.stringify({
                documentId: result.lastID,
                url
            })]);
        res.status(201).json({
            id: result.lastID,
            name: displayName,
            type: 'website',
            source: url,
            status: 'processing',
            message: 'Website added successfully'
        });
    }
    catch (error) {
        console.error('Add URL error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
// Delete document
router.delete('/:documentId', async (req, res) => {
    try {
        const { tenantId } = req.user;
        const { documentId } = req.params;
        // Get document info
        const document = await database_1.database.get('SELECT * FROM knowledge_base WHERE id = ? AND tenant_id = ?', [documentId, tenantId]);
        if (!document) {
            return res.status(404).json({ error: 'Document not found' });
        }
        // Delete file if it's a uploaded document
        if (document.type !== 'website') {
            const filePath = path_1.default.join(process.env.UPLOAD_DIR || './uploads', document.source);
            if (fs_1.default.existsSync(filePath)) {
                fs_1.default.unlinkSync(filePath);
            }
        }
        // Delete from database
        await database_1.database.run('DELETE FROM knowledge_base WHERE id = ? AND tenant_id = ?', [documentId, tenantId]);
        // Log analytics event
        await database_1.database.run('INSERT INTO analytics_events (tenant_id, event_type, event_data) VALUES (?, ?, ?)', [tenantId, 'document_deleted', JSON.stringify({
                documentId,
                name: document.name,
                type: document.type
            })]);
        res.json({ message: 'Document deleted successfully' });
    }
    catch (error) {
        console.error('Delete document error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
// Update document status (for processing updates)
router.put('/:documentId/status', async (req, res) => {
    try {
        const { tenantId } = req.user;
        const { documentId } = req.params;
        const { status } = req.body;
        if (!['processing', 'active', 'error'].includes(status)) {
            return res.status(400).json({ error: 'Invalid status' });
        }
        await database_1.database.run('UPDATE knowledge_base SET status = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ? AND tenant_id = ?', [status, documentId, tenantId]);
        res.json({ message: 'Document status updated successfully' });
    }
    catch (error) {
        console.error('Update document status error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
// Get document by ID
router.get('/:documentId', async (req, res) => {
    try {
        const { tenantId } = req.user;
        const { documentId } = req.params;
        const document = await database_1.database.get('SELECT * FROM knowledge_base WHERE id = ? AND tenant_id = ?', [documentId, tenantId]);
        if (!document) {
            return res.status(404).json({ error: 'Document not found' });
        }
        res.json({
            ...document,
            metadata: JSON.parse(document.metadata || '{}')
        });
    }
    catch (error) {
        console.error('Get document error:', error);
        res.status(500).json({ error: 'Internal server error' });
    }
});
exports.default = router;
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