const low = require('lowdb');
const FileSync = require('lowdb/adapters/FileSync');

var db = null;

function db_init(db){
	db.defaults({ chats:[]}).write();
}

var dbc = function(name){
	const db_file = "./db/"+name+".json";
	var db = low(new FileSync(db_file));
	db_init(db);
	return db;
};

const schema = {
	chats:{
		id: "chat_id",
		lang:"chat_lang",
		tz:"chat_tz",
		geo:"chat_geo",
	},
};


module.exports = function(name){
	this.name = name;
	this.db = dbc(name);

	this.dump_db = function(obj){
		return new Promise((resolve, reject)=>{
			resolve(this.db.get("chats").value());
		});
	};
};