import sqlite3 from 'sqlite3'
import { open, Database  } from 'sqlite'

export class DatabaseController {
    private db: Database;

    private constructor(db: Database) {
        this.db = db;
    }

    static async create(filename = ':memory:'): Promise<DatabaseController> {
        const db = await open({
            filename,
            driver: sqlite3.Database
        });
        let dbController = new DatabaseController(db);
        dbController.basicSetup()
        return dbController;
    }

    async basicSetup(){
        await this.db.run(`CREATE TABLE IF NOT EXISTS characters (
            id INTEGER PRIMARY KEY,
            user_id INTEGER NOT NULL UNIQUE,
            level INTEGER DEFAULT 0,
            inventory TEXT,
            questBook TEXT
        );`)
        await this.db.run(`CREATE TABLE IF NOT EXISTS users (
            id INTEGER PRIMARY KEY,
            login TEXT NOT NULL UNIQUE,
            password TEXT NOT NULL
        );`)
    }
    
    async select<T = any>(sql: string, params?: any[]): Promise<T[]> {
        const rows: unknown = await this.db.all(sql, params);
        return Array.isArray(rows) ? (rows as T[]) : [];
    }

    async get<T = any>(sql: string, params?: any[]): Promise<T | undefined> {
        return this.db.get<T>(sql, params);
    }

    async run(sql: string, params?: any[]): Promise<void> {
        await this.db.run(sql, params);
    }

    async close(): Promise<void> {
        await this.db.close();
    }
}

// Usage example (you can put this in another file):

// import { DatabaseController } from './db/DatabaseController';

// (async () => {
//     const db = await DatabaseController.create('mydb.sqlite3');
  
//     await db.run(`CREATE TABLE IF NOT EXISTS players (
//         id INTEGER PRIMARY KEY,
//         level INTEGER NOT NULL,
//         inventory TEXT,
//         questBook TEXT
//     );`)
//     await db.run(`CREATE TABLE IF NOT EXISTS users (
//         id INTEGER PRIMARY KEY,
//         login TEXT NOT NULL,
//         password TEXT NOT NULL
//     );`)

//   await db.run('CREATE TABLE IF NOT EXISTS friends (id INTEGER PRIMARY KEY, name TEXT)');
//   await db.run('INSERT INTO friends (name) VALUES (?)', ['Silver Fox']);
//   const friends = await db.select('SELECT * FROM friends');
//   console.log(friends); // [{ id: 1, name: 'Silver Fox' }]
//   await db.close();
// })();