const db = require('../config/database');

class SystemSetting {
    static async get(key) {
        const rows = await db.query('SELECT value FROM system_settings WHERE key = ?', [key]);
        return rows.length > 0 ? rows[0].value : null;
    }

    static async getAll() {
        const rows = await db.query('SELECT key, value FROM system_settings');
        const settings = {};
        rows.forEach(row => {
            settings[row.key] = row.value;
        });
        return settings;
    }

    static async set(key, value) {
        return await db.query(
            'INSERT INTO system_settings (key, value) VALUES (?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value',
            [key, value]
        );
    }

    static async setMany(settings) {
        for (const [key, value] of Object.entries(settings)) {
            await this.set(key, String(value));
        }
    }
}

module.exports = SystemSetting;