const {
    Client,
    GatewayIntentBits,
    Collection,
    Partials
} = require("discord.js");

const {
    MongoClient
} = require("mongodb");

const fs = require("node:fs");

require("dotenv").config();


/*
 * MONGODB
 */

const mClient =
    new MongoClient(
        process.env.M_URI
    );

exports.mClient =
    mClient;


/*
 * DISCORD CLIENT
 */

const client =
    new Client({
        intents: [
            GatewayIntentBits.Guilds,
            GatewayIntentBits.GuildMembers,
            GatewayIntentBits.GuildMessages,
            GatewayIntentBits.GuildPresences,
            GatewayIntentBits.GuildMessageReactions,
            GatewayIntentBits.GuildVoiceStates,
            GatewayIntentBits.DirectMessages,
            GatewayIntentBits.MessageContent
        ],

        partials: [
            Partials.Channel,
            Partials.Message,
            Partials.User,
            Partials.GuildMember,
            Partials.Reaction
        ]
    });

exports.client =
    client;


/*
 * COLLECTIONS
 */

client.commands =
    new Collection();

client.legacyCommands =
    new Collection();

client.aliases =
    new Collection();

client.buttons =
    new Collection();

client.selectMenus =
    new Collection();

client.modals =
    new Collection();


/*
 * START APPLICATION
 */

async function start() {
    try {
        /*
         * Connect Mongo first.
         */

        await mClient.connect();

        console.log(
            "MongoDB connected"
        );


        /*
         * Initialize database indexes before handlers are
         * exposed to Discord interactions.
         *
         * Requiring these after mClient is exported avoids
         * circular-import initialization problems because the
         * shared utilities import mClient from index.js.
         */

        const {
            ensureCookieIndexes
        } = require(
            "./utils/cookieEconomy"
        );

        const {
            ensureProfileSystem
        } = require(
            "./utils/profileSystem"
        );

        await Promise.all([
            ensureCookieIndexes(),
            ensureProfileSystem()
        ]);

        console.log(
            "Database indexes initialized"
        );


        /*
         * Load handlers.
         */

        const handlerFiles =
            fs.readdirSync(
                "./handlers"
            );

        for (
            const handler
            of handlerFiles
        ) {
            require(
                `./handlers/${handler}`
            )(client);
        }


        /*
         * Login Discord.
         */

        await client.login(
            process.env.D_TOKEN
        );

    } catch (error) {
        console.error(
            "Failed to start ShaiBot:",
            error
        );

        process.exit(1);
    }
}

start();