require("dotenv").config({ quiet: true });
const colors = require('colors');
const fs = require('fs').promises;
const path = require('path');
const sqlite3 = require('sqlite3').verbose();
const dbPath = path.join(__dirname, process.env.DB_PATH || 'bansync.db');
const cron = require('node-cron');
const { Client, REST, DiscordAPIError, InteractionType, Routes } = require('discord.js');
// const s3 = require("./s3"); // This *was* for S3 backups and file uploads for images and whatnot. But i figured it was overkill and cut it. s3.js still exists because it's a good base.

// Initialize SQLite database
const db = new sqlite3.Database(dbPath, (sqlErr) => {
    if (sqlErr) {
        console.error(`${colors.red('[ERROR]')} Failed to connect to the database:`, sqlErr);
        process.exit(1); // Can't proceed without DB connection
    } else {
        console.log(`${colors.green('[INFO]')} Connected to the SQLite database at ${dbPath}`);
    }
});

const init = () => {
    require('./migrations')(db).then(async () => {
        // if (process.env.S3_DB_BACKUP == true) {
        //     s3.uploadFile('db_backup.db', await fs.readFile(dbPath)).then(() => {
        //         console.log(`${colors.cyan('[INFO]')} Initial DB backup uploaded to S3.`);
        //         let schedule = process.env.S3_DB_BACKUP_SCHEDULE || '0 0 * * *'; // Default to every day
        //         if (!cron.validate(schedule)) {
        //             console.log(`${colors.red('[ERROR]')} Invalid cron schedule for S3_DB_BACKUP_SCHEDULE. Using default '0 0 * * *'.`);
        //             schedule = '0 0 * * *';
        //         }
        //         cron.schedule(schedule, async () => {
        //             try {
        //                 const data = await fs.readFile(dbPath);
        //                 await s3.uploadFile('db_backup.db', data);
        //                 console.log(`${colors.cyan('[INFO]')} Backed up DB to S3.`);
        //             } catch (err) {
        //                 console.log(`${colors.red('[ERROR]')} Failed to back up DB to S3:`, err);
        //             }
        //         });
        //         console.log(`${colors.cyan('[INFO]')} Scheduled DB backups to S3.`);
        //     });
        // } // Cut feature. Overkill lol
        discord_setup();
    });
};

const discord_setup = () => {
    const client = new Client({
        intents: ["GuildBans", "Guilds", "GuildModeration"]
    });

    const banHandler = require('./banHandler');
    const unbanHandler = require('./unbanHandler');

    client.on('guildBanRemove', (ban) => {
        unbanHandler(ban, db, client);
    });

    client.on('guildBanAdd', (ban) => {
        banHandler(ban, db, client);
    });

    client.on('interactionCreate', async interaction => {
        try {
            switch (interaction.type) {
                case InteractionType.ApplicationCommand:
                    require(path.join(__dirname, 'interactions', 'commands', interaction.commandName))(interaction, db, client);
                    break;
                case InteractionType.MessageComponent:
                    require(path.join(__dirname, 'interactions', 'components', interaction.customId))(interaction, db, client);
                    break;
                case InteractionType.ApplicationCommandAutocomplete:
                    require(path.join(__dirname, 'interactions', 'autocomplete', interaction.commandName))(interaction, db, client);
                    break;
                default:
                    console.log(`${colors.yellow('[WARN]')} Unknown interaction type: ${interaction.type}`);
                    interaction.reply({ content: 'Unknown interaction type.', ephemeral: true });
                    break;
            }
        } catch (error) {
            console.error(`${colors.red('[ERROR]')} Error handling interaction:`, error);
            interaction.reply({ content: 'An error occurred while processing your request.', ephemeral: true });
        }
    });

    client.once('clientReady', () => {
        console.log(`${colors.green('[DISCORD]')} Bot is online as ${client.user.displayName}`);
        
        // Init application commands (global)
        const rest = new REST().setToken(process.env.DISCORD_TOKEN);
        (async () => {
            try {
                console.log(`${colors.cyan('[DISCORD]')} Refreshing application (/) commands.`);
                await rest.put(Routes.applicationCommands(client.user.id), {
                    body: require('./commands')
                });
                console.log(`${colors.green('[DISCORD]')} Successfully reloaded application (/) commands.`);
            } catch (error) {
                console.error(`${colors.red('[DISCORD]')} Error reloading application (/) commands:`, error);
            }
        })();

        // Sync bans on startup
        const sync = require('./sync');
        sync(client, db);
        // Sync every 10 minutes
        cron.schedule(process.env.SYNC_SCHEDULE, () => {
            sync(client, db);
        });
    });

    client.login(process.env.DISCORD_TOKEN).catch(err => {
        console.log(`${colors.red('[DISCORD]')} Failed to log in:`, err);
        process.exit(1); // Can't proceed without Discord connection
    });
};

init();