const Discord = require("discord.js");
const TOKEN = require("./token.js");
const lowdb = require("lowdb");
const FileSync = require("lowdb/adapters/FileSync");

const adapter = new FileSync(__dirname + "/db.json");
const db = lowdb(adapter);

db._.mixin({
    randomElement: array => array[Math.floor(Math.random() * array.length)]
});

db.defaults({
    emotes: {
        angery: [
            "488797492352385034",
            "488797455899688971",
            "488796668750200842",
            "488796396175097876",
            "488793566982963231",
            "488793511181811749",
            "488791172085448718",
            "489091926474096651"
        ],
        hug: [
            "489094486132260864",
            "489094428410249218",
            "489094553148850176",
            "489094604935790622",
            "485109695846023209"
        ]
    },
    specialUsers: ["141880968800763905", "307897683849510912", "335898304472678402"],
    guides: {},
    editors: {
        roles: ["484046157971193866", "305844721622712322"],
        users: ["307897683849510912", "170116346095468545", "335898304472678402"]
    }
}).write();

const client = new Discord.Client();

function isAuthorised(member) {
    if(db.get("editors.users").includes(member.id).value())
        return true;
    if(db.get("editors.roles").intersectionWith(member.roles.keyArray()).isEmpty().value())
        return false;
    return true;
}

const commands = {
    "make guide": (msg, s) => {
        if(!isAuthorised(msg.member))
            return;
        let content = s.substring("make guide ".length);
        let guideName = content.substring(0, content.indexOf("\n")).trim();
        let guideContent = content.substring(content.indexOf("\n")).trim();
        db.get("guides")
            .set(guideName, guideContent)
            .write();
        msg.channel.send(
            `${msg.author.toString()} Added/updated "${guideName}"!`
        );
    },
    "delete guide": (msg, s) => {
        if(!isAuthorised(msg.member))
            return;
        let guideName = s.substring("delete guide ".length).trim();
        if (
            !db
                .get("guides")
                .has(guideName)
                .value()
        ) {
            msg.channel.send(
                `${msg.author.toString()} No guide "${guideName}"!`
            );
            return;
        }
        db.get("guides")
            .unset(guideName)
            .write();
        msg.channel.send(
            `${msg.author.toString()} Removed guide "${guideName}!"`
        );
    },
    help: msg => {
        let guides = db
            .get("guides")
            .keys()
            .value()
            .reduce((p, c) => `${p}\n${c}`, "");
        msg.channel.send(
            `Hello! I am NoctBot! I have answers for the most common C(O)M-related questions.\nJust ping me with one of the following commands:\n\`\`\`${guides}\`\`\``
        );
    }
};

client.on("ready", () => {
    console.log("Ready!");
    client.user.setActivity("@NoctBot help");
});

client.on("message", m => {
    if (m.mentions.users.size == 0) return;
    if (m.mentions.users.first().id == client.user.id) {
        let content = m.cleanContent.substring(
            `@${client.user.username} `.length
        );

        for (let c in commands) {
            if (content.startsWith(c)) {
                commands[c](m, content);
                return;
            }
        }

        let guide = db
            .get("guides")
            .get(content.trim())
            .value();
        if (guide) {
            m.channel.send(guide);
            return;
        }

        const emoteType = db
            .get("specialUsers")
            .includes(m.author.id)
            .value()
            ? "hug"
            : "angery";
        const id = db
            .get("emotes")
            .get(emoteType)
            .randomElement()
            .value();
        m.channel.send(client.emojis.find(e => e.id == id).toString());
    } else if (m.content.includes("Noct")) {
        m.channel.send(
            client.emojis.find(e => e.name == "mukuNeighWaaaaaa").toString()
        );
    }
});

client.login(TOKEN);