const fs = require('fs');
const path = require('path');

module.exports = class {
    constructor() {
        this.map = new Map();
        this.loadData();
    }
    
    loadData() {
        console.log("");
        const dataFiles = fs.readdirSync(path.join(path.dirname(__dirname), 'datastore')).filter(f => f.endsWith('.json'));
        for (const file of dataFiles) {
            try {
                const json = require(`../datastore/${file}`);
                this.map.set(json.guild.id, json);
                //console.log('[LOADED] ' + file + " (" + json.guild.id + ")");
                //console.log(JSON.stringify(json, null, 4));
            } catch (error) {
                //console.log('[ERROR] Loading ' + file + ' failed');
            }
        }
        console.log("");
    }
    
    checkEntry(id){
        if(!this.map.has(id)){
            this.createEntry(id);
            //this.showEntry(this.getEntry(id));
        } else {
            //this.showEntry(this.getEntry(id));
        }
    }

    createEntry(id){
        let newData = {};
        newData.guild = {};
        newData.guild.id = id;
        newData.statistics = {};
        this.map.set(id, newData);
        this.saveEntry(id, newData);
    }
    
    getEntry(id){
        return this.map.get(id);
    }
    
    updateEntry(guild, newData) {
        newData.guild.name = guild.name;
        this.map.set(guild.id, newData);
        this.saveEntry(guild.id, newData);
        //this.showEntry(this.getEntry(guild.id));
    }
    
    showEntry(data){
        console.log(data);
    }
    
    createTestFile () {
        let newData = {
            "guild": {
                "id": "test",
                "name": "Test"
            },
            "statistics": {
                "test": {
                    "time": 0,
                    "used": 0
                }
            }
        }
        
        this.updateEntry(newData.guild, newData);
    }
    
    saveEntry(file, data) {
        data = JSON.stringify(data, null, 4);
        
        fs.writeFile(path.join(path.dirname(__dirname), 'datastore') + "/" + file + ".json", data, 'utf8', function(err) {
            if (err) {
                //console.log(err);
            }
        });
    }
};