import { game } from "../game";
import { userData } from "./userData";
const fs = require('fs');

export class users{
    static createUser(login, password){
        if(game.accountsDB.filter(u=>u.Login == login)[0] != undefined){
            console.log(`User ${login} alread exists`);
            return null;
        }

        var user = new userData(game.accountsDB.length, login, password);
        game.accountsDB.push(user);
        return user;
    }
    
    static readUser(login, password){
        let user = game.accountsDB.filter(u=>u.Login == login && u.Password == password)[0];
        if(user != undefined){
            return user;
        }
        return null;
    }

    static readUserID(id : number){
        let user = game.accountsDB.filter(u=>u.Id == id)[0];
        return user;
    }

    static updateUser(userNew : userData){
        let user = this.readUserID(userNew.Id);
        let sum = Math.floor(Math.random() * 99999);
        while(sum == userNew.Checksum){
            sum = Math.floor(Math.random() * 99999);
        }
        userNew.Checksum = sum;
        game.accountsDB[game.accountsDB.indexOf(user)] = userNew;
    }

    static saveUsers(){
        game.accountsDB.forEach(user => {
            let data = JSON.stringify(user, null, 2);
            fs.writeFileSync(`Database/Users/${user.Id}_${user.Login}.json`, data);
        });
    }
    
    static loadUsers(){
        fs.readdir(`Database/Users/`, (err, files) => {
            files.forEach(file => {
                fs.readFile(`Database/Users/${file}`, (err, data) => {
                    if (err) throw err;
                    let user = JSON.parse(data);
                    game.accountsDB.push(user);
                    console.log(`Loaded ${user.Login}`);
                });
            });
        });
    }
}