const Discord = require('discord.io');
const auth = require('./auth.json');
const fs = require('fs');

//please keep this token strictly confidential
var bot = new Discord.Client({
    token: "ask teaf for the token",
    autorun: true
});

//i just hardcoded the server and admin channel IDs in because i'm a great programmer
const serverID = "222537486260240384";
const adminChannelID = "404461419577475082";

bot.on('disconnect', (errMsg, code) => {
    var date = new Date().toLocaleString();
    if (errMsg) console.log(date + "\n" + errMsg);
    setTimeout(() => {
        console.log(date + "\nExited with code " + code);
        process.exit();
    }, 1000);
    bot.connect()
});

function sendMessage(channelID, message) {
    return bot.sendMessage({
        to: channelID,
        message: message
    });
}

bot.on('ready', function (rawEvent) {
    var date = new Date().toLocaleString();
    console.log(date)
    console.log("Connected! Logged in as: ");
    console.log(bot.username + " - (" + bot.id + ")");
    checkFiles()

    //nya
    var kikkoman;
    var usr = Object.keys(bot.servers[serverID].members);
    for(var i in bot.servers[serverID].roles){
        if(bot.servers[serverID].roles[i].name.toLowerCase() === "kikkoman") {
            kikkoman = bot.servers[serverID].roles[i].id; //get kikkoman ID
            break;
        }
    }
    var user;
    for (var i in bot.servers[serverID].roles) {
        if (bot.servers[serverID].roles[i].name.toLowerCase() === "user") {
            user = bot.servers[serverID].roles[i].id; //get user ID
            break;
        }
    }
    var deuser;
    for (var i in bot.servers[serverID].roles) {
        if (bot.servers[serverID].roles[i].name.toLowerCase() === "de-usered") {
            deuser = bot.servers[serverID].roles[i].id; //get de-usered ID
            break;
        }
    }

    //nyaaa
    function checkActivity() {
        var total, t;
        for (var i in usr) {
            var hasUser = false; //check if they have a user role
            for (var j in bot.servers[serverID].members[usr[i]].roles) {
                if (bot.servers[serverID].members[usr[i]].roles[j] === user) {
                    hasUser = true;
                    break;
                }
            }

            var hasDeuser = false; //check if they have a de-usered role
            for (var j in bot.servers[serverID].members[usr[i]].roles) {
                if (bot.servers[serverID].members[usr[i]].roles[j] === deuser) {
                    hasDeuser = true;
                    break;
                }
            }

            if (hasUser === true) {
                t = Number(readFile(usr[i], "activity"))
                total = updateActivity();
                var days = 86400000
                var timeAway = (total - t) / days
                if (timeAway > 50) {
                    //check for kikkoman role
                    var pass = false;
                    for (var j in bot.servers[serverID].members[usr[i]].roles) {
                        if (bot.servers[serverID].members[usr[i]].roles[j] === kikkoman) {
                            pass = true;
                            break;
                        }
                    }
                    if (pass === false) {
                        //remove user role
                        bot.removeFromRole({
                            serverID: serverID,
                            userID: usr[i],
                            roleID: user
                        });
                        if (hasDeuser === false) {
                            bot.addToRole({
                                serverID: serverID,
                                userID: usr[i],
                                roleID: deuser
                            });
                            console.log("Removed user role from " + bot.users[usr[i]].username)
                            sendMessage(adminChannelID, "Removed user role from " + bot.users[usr[i]].username + " and added de-usered role.")
                        }
                        else {
                            console.log("Removed user role from " + bot.users[usr[i]].username)
                            sendMessage(adminChannelID, "Removed user role from " + bot.users[usr[i]].username + ". User already had de-usered role.")
                        }
                    }
                }
            }
        }
        setTimeout(checkActivity, 120000); //this is the timer okay
    }
    checkActivity();
});

//update activity
function updateActivity() {
    var d = new Date();
    d = d.getTime();
    return d;
}

//user files
function checkFiles() {
    //last known activity is stored in a user .txt file
    var usr = Object.keys(bot.servers[serverID].members)
    for (var i in usr) {
        if (fs.existsSync("./var/" + usr[i]) === false) {
            console.log("/var/ for " + usr[i] + " does not exist! Generating folder");
            fs.mkdirSync("./var/" + usr[i])
            fs.writeFileSync("./var/" + usr[i] + "/activity.txt", updateActivity());
        }
    }
}

function readFile(userID, file) {
    var userFile = "./var/" + userID + "/" + file + ".txt";
    return fs.readFileSync(userFile);
}

function writeFile(userID, file, content) {
    c = content.toString();
    var userFile = "./var/" + userID + "/" + file + ".txt";
    fs.writeFileSync(userFile, c);
    console.log("Updated user " + userID + " with " + c);
}

//detect messages
bot.on('message', function (user, userID, channelID, message, rawEvent) {
    if (rawEvent.d.author.username !== bot.username) {
        if (fs.existsSync("./var/" + userID) === false) {
            console.log("/var/ for " + userID + " does not exist! Generating folder");
            fs.mkdirSync("./var/" + userID)
            fs.writeFileSync("./var/" + userID + "/activity.txt", updateActivity());
        }
        writeFile(userID, "activity", updateActivity());
    }
});