const config = require("./config.json");
const Discord = require("discord.js");
const bot = new Discord.Client({disableEveryone: true});
const commandTimeout = new Set();
const invites = {};
const wait = require('util').promisify(setTimeout);

bot.on("ready", async () => {
    // "ready" isn't really ready. We need to wait a spell.
    wait(1000);

    // Load all invites for all guilds and save them to the cache.
    bot.guilds.forEach(g => {
        g.fetchInvites().then(guildInvites => {
        invites[g.id] = guildInvites;
        });
    });
    console.log(`Invites | Logged in as ${bot.user.username}#${bot.user.discriminator}`)
    var status = (`${bot.users.size} users | ${config.prefix}help`)
    bot.user.setActivity(status, { type: 'LISTENING' });
    console.log(`Invites | Status set to '${status}'`)
    if (bot.guilds.size < 2) {
        console.log(`Invites | ${bot.guilds.size} Guild`)
    } else {
        console.log(`Invites | ${bot.guilds.size} Guilds`)
    }
    if (bot.users.size < 2) {
        console.log(`Invites | ${bot.users.size} User`)
    } else {
        console.log(`Invites | ${bot.users.size} Users`)
    }
    console.log(`Invites | Client ID: ${bot.user.id}`)
    console.log(`Invites | Token: ${config.token}`)
    console.log(`Invites | Invite Link: https://discordapp.com/oauth2/authorize?&client_id=${bot.user.id}&scope=bot&permissions=8`)
});

bot.on('guildMemberAdd', member => {
    console.log(`[LOG] ${member.user.username}#${member.user.discriminator} joined the server`)
    member.addRole(member.guild.roles.find(val => val.name === 'Member'));
    member.guild.fetchInvites().then(guildInvites => {
        // This is the *existing* invites for the guild.
        const ei = invites[member.guild.id];
        // Update the cached invites for the guild.
        invites[member.guild.id] = guildInvites;
        // Look through the invites, find the one for which the uses went up.
        const invite = guildInvites.find(i => ei.get(i.code).uses < i.uses);
        // This is just to simplify the message being sent below (inviter doesn't have a tag property)
        const inviter = bot.users.get(invite.inviter.id);
        const logChannel = member.guild.channels.find(channel => channel.name === "🚪-join-leave");
        var fs = require('fs')
        var joinedlist = fs.readFileSync('joined.txt', 'utf8');
        var newjoinedlist = joinedlist + `\n${member.user.id}`
        fs.writeFile("joined.txt", newjoinedlist, function(err) {
            if(err) {
                return console.log(err);
            }
        })
        if (joinedlist.includes(member.user.id) === false) {
            var path = `${inviter.id}.txt`
            if (fs.existsSync(path)) {
                var invitecount = fs.readFileSync(path, 'utf8');
                var newinvitecount = parseInt(invitecount) + parseInt(1)
                fs.writeFile(path, newinvitecount, function(err) {
                    if(err) {
                        return console.log(err);
                    }
                })
                console.log(`[LOG] ${path} modified.`)
                logChannel.send(`<@${member.user.id}> joined using invite code **${invite.code}** from <@${inviter.id}>.\n<@${inviter.id}> now has a total of **${newinvitecount}** invites.`);
                if ((newinvitecount % 3) === 0) {
                    var keylist = fs.readFileSync('keys.txt', 'utf8');
                    var keyarray = keylist.split('\n')
                    var keyarrayforrewrite = keylist.split('\n')
                    var newkeyarray = keyarrayforrewrite.splice(1)
                    var newkeylist = newkeyarray.join('\n')
                    fs.writeFile("keys.txt", newkeylist, function(err) {
                        if(err) {
                            return console.log(err);
                        }
                    })
                    bot.users.get(inviter.id).send(keyarray[0])
                }
                else {
                    return;
                }
                if (newinvitecount === 3) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'Rookie (3+ Invites)'));
                }
                else if (newinvitecount === 5) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'Super (5+ Invites)'));
                }
                else if (newinvitecount === 10) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'Elite (10+ Invites)'));
                }
                else if (newinvitecount === 25) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'Ultra (25+ Invites)'));
                }
                else if (newinvitecount === 50) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'Pro (50+ Invites)'));
                }
                else if (newinvitecount === 100) {
                    member.guild.members.get(inviter.id).addRole(member.guild.roles.find(val => val.name === 'VIP (100+ Invites)'));
                }
            }
            else {
                fs.writeFile(path, '1', function (err) {
                    if (err) throw err;
                    console.log(`[LOG] ${path} created.`)
                })
                logChannel.send(`<@${member.user.id}> joined using invite code ${invite.code} from <@${inviter.id}>.\n<@${inviter.id}> now has a total of **1** invite.`);
            }
        }
        else {
            var path = `${inviter.id}.txt`
            if (fs.existsSync(path)) {
                var invitecount = fs.readFileSync(path, 'utf8');
                var newinvitecount = parseInt(invitecount) + parseInt(0)
                fs.writeFile(path, newinvitecount, function(err) {
                    if(err) {
                        return console.log(err);
                    }
                })
                console.log(`[LOG] ${path} modified.`)
                logChannel.send(`<@${member.user.id}> joined using invite code ${invite.code} from <@${inviter.id}>.\n<@${inviter.id}> now has a total of **${newinvitecount}** invites.`);
            }
            else {
                logChannel.send(`<@${member.user.id}> joined using invite code ${invite.code} from <@${inviter.id}>.`);
            }
        }
    });
})

bot.on("message", async message => {
    var status = (`${bot.users.size} users | ${config.prefix}help`)
    bot.user.setActivity(status, { type: 'LISTENING' });
    if (message.author.bot) return;
    if (!message.content.startsWith(config.prefix)) {
        if (message.channel.id !== "654808100897030160") {
            return;
        }
        else {
            if (message.member.voiceChannel === undefined) {
                message.delete()
                message.author.send("Messages can only be sent in <#654808100897030160> if you're in a voice channel.")
            }
            else {
                return;
            }
        }
    };
    var args = message.content.slice(config.prefix.length).trim().split(/ +/g);
    var command = args.shift().toLowerCase();
    if (command === "ping") {
        console.log(`[LOG] ${message.author.username}#${message.author.discriminator} executed ${config.prefix}ping`)
        var m = await message.channel.send("Pong!")
        m.edit(`Pong! ${m.createdTimestamp - message.createdTimestamp}ms`)
    }
    else if (command === "help") {
        console.log(`[LOG] ${message.author.username}#${message.author.discriminator} executed ${config.prefix}help`)
        message.react('✅')
        var helpembed = new Discord.RichEmbed()
            .setColor('#ee3734')
            .setTitle('Help')
            .setDescription(`__**General**__\n**${config.prefix}help** Displays all commands\n\n__**Casino**__\n**${config.prefix}spin** Take your chances at winning a steam key!`)
        message.author.send(helpembed)
    }
    else if (command === "spin") {
        const casinoleft = bot.emojis.get("655003282707841065");
        const casinoright = bot.emojis.get("655004694988455937");
        console.log(`[LOG] ${message.author.username}#${message.author.discriminator} executed ${config.prefix}spin`)
        if (message.channel.id !==  "654804323535945765") {
            message.channel.send(`Daily spins can only be completed in <#654804323535945765>.`)
            return;
        }
        else {
            if (commandTimeout.has(message.author.id)) {
                message.channel.send(`You can only spin once every 24 hours!`)
            }
            else {
                commandTimeout.add(message.author.id)
                setTimeout(() => {
                    commandTimeout.delete(message.author.id);
                }, 86400000);
                var spinrng = (Math.random() * (9 - 0) + 0)
                console.log(`[SPIN] ${message.author.username}#${message.author.discriminator} rolled ${spinrng}`)
                if (spinrng > 8) {
                    var n = await message.channel.send(`${casinoleft} | 🎰 | ${casinoright}\n❌ | ❌ | ✅\n✅ | ❌ | ✅\n❌ | ❌ | ❌`)
                    setTimeout(() => {
                        n.edit(`${casinoleft} | 🎰 | ${casinoright}\n✅ | ✅ | ✅\n❌ | ❌ | ✅\n✅ | ❌ | ✅`);
                    }, 1500);
                    setTimeout(() => {
                        n.edit(`${casinoleft} | 🎰 | ${casinoright}\n✅ | ❌ | ❌\n✅ | ✅ | ✅\n❌ | ❌ | ✅`);
                    }, 2500);
                    setTimeout(() => {
                        message.channel.send(`**Winnings:**\n🎉 <@${message.author.id}> You have won 1x Steam Key! Check your DMs for your prize! 🎉`)
                    }, 2600);
                    setTimeout(() => {
                        var fs = require('fs');
                        var keylist = fs.readFileSync('keys.txt', 'utf8');
                        var keyarray = keylist.split('\n')
                        var keyarrayforrewrite = keylist.split('\n')
                        var newkeyarray = keyarrayforrewrite.splice(1)
                        var newkeylist = newkeyarray.join('\n')
                        fs.writeFile("keys.txt", newkeylist, function(err) {
                            if(err) {
                                return console.log(err);
                            }
                        })
                        message.author.send(keyarray[0])
                    }, 2600);
                }
                else {
                    var n = await message.channel.send(`${casinoleft} | 🎰 | ${casinoright}\n❌ | ❌ | ✅\n✅ | ❌ | ✅\n❌ | ❌ | ❌`)
                    setTimeout(() => {
                        n.edit(`${casinoleft} | 🎰 | ${casinoright}\n❌ | ❌ | ❌\n❌ | ❌ | ✅\n✅ | ❌ | ✅`);
                    }, 1500);
                    setTimeout(() => {
                        n.edit(`${casinoleft} | 🎰 | ${casinoright}\n✅ | ❌ | ❌\n❌ | ❌ | ❌\n❌ | ❌ | ✅`);
                    }, 2500);
                    setTimeout(() => {
                        message.channel.send(`❌ You have lost! Try again tomorrow! ❌`)
                    }, 2600);
                }
            }
        }
    }
});

bot.login(config.token);