import db from "../config/database.js";

class PurchaseService {
    static async getPurchasesByUserId(userId, limit, offset) {
        try {
            return await db.allAsync(`
                SELECT
                    p.*,
                    pr.name as product_name,
                    pr.description,
                    l.country,
                    l.city,
                    l.district
                FROM purchases p
                    JOIN products pr ON p.product_id = pr.id
                    JOIN locations l ON pr.location_id = l.id
                WHERE p.user_id = ?
                ORDER BY p.purchase_date DESC
                LIMIT ?
                OFFSET ?
            `, [userId, limit, offset]);

        } catch (error) {
            console.error('Error get purchases:', error);
            throw error;
        }
    }

    static async getPurchaseById(purchaseId) {
        try {
            return await db.getAsync(`
                SELECT
                    p.*, 
                    pr.name as product_name,
                    pr.description,
                    l.country,
                    l.city,
                    l.district
                FROM purchases p
                    JOIN products pr ON p.product_id = pr.id
                    JOIN locations l ON pr.location_id = l.id
                WHERE p.id = ?
            `, [purchaseId]);
        } catch (error) {
            console.error('Error get purchase:', error);
            throw error;
        }

    }

    static async createPurchase(userId, productId, walletType, quantity, totalPrice) {
        await db.runAsync(
            'INSERT INTO purchases (user_id, product_id, wallet_type, tx_hash, quantity, total_price) VALUES (?, ?, ?, ?, ?, ?)',
            [userId, productId, walletType, "null", quantity, totalPrice]
        );
    }
}

export default PurchaseService