/*
*  Konpeki Discord Bot - Main Bot File
*  All base level bot setup is done here
*/

// Require filesystem libraries
const fs = require('node:fs');
const path = require('node:path');

// Add pm2 metrics - this should NEVER track ANYTHING identifiable. This is purely for basic metrics and bot performance tracking
const metrics = require('./utils/pm2-metrics.js');

// Use a custom logging script
const logger = require('./utils/logging.js');

// Listen for (Semi-)Permenant Interactions
const interactionListener = require('./utils/interaction-trigger.js');

// Require the necessary discord.js classes
const { Client, Collection, Events, GatewayIntentBits } = require('discord.js');
const { token, botOwner } = require('./config.json');
const { activity, status } = require('./presence.json');

// Create a new client instance
const client = new Client({ intents: [GatewayIntentBits.Guilds] });

// Setup the commands collection
client.commands = new Collection();

const commandsPath = path.join(__dirname, 'commands');
const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));

for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);
    const command = require(filePath);
    // Set a new item in the Collection with the key as the command name and the value as the exported module
    if ('data' in command && 'execute' in command) {
        client.commands.set(command.data.name, command);
    }
    else {
        logger.log(logger.logLevels.WARN, `The command at ${filePath} is missing a required "data" or "execute" property.`);
    }
}

// When the client is ready, run this code (only once)
// We use 'c' for the event parameter to keep it separate from the already defined 'client'
client.once(Events.ClientReady, c => {
    logger.log(logger.logLevels.INFO, `${logger.colorText('Ready!', logger.textColor.Green)} Logged in as ${logger.colorText(c.user.tag, logger.textColor.Blue)}`);
    client.user.setPresence({ activities: [{ name: activity }], status: status });

    // Track websocket heartbeat with PM2 Histogram
    let latency = 0;
    setInterval(function() {
        latency = c.ws.ping;
        metrics.websocketHeartbeatHist.update(latency);
    }, 1000);

    // Report current server count with PM2 (Servers counted anonymously)
    metrics.serverCount.set(c.guilds.cache.size);

});

// Client "on" Events
// Someone used an interaction
client.on(Events.InteractionCreate, async interaction => {
    if (interaction.isChatInputCommand()) {

        const command = interaction.client.commands.get(interaction.commandName);

        if (!command) {
            logger.log(logger.logLevels.ERROR, `No command matching ${interaction.commandName} was found.`);
            await interaction.reply({ content: `This command no longer exists! Please contact ${botOwner} to report that this is happening!`, ephemeral: true });

            // Report error to PM2 dashboard
            metrics.interactionErrors.inc();
            metrics.io.notifyError(new Error('Interaction doesn\'t exist'), {
                custom: {
                    interactionCommand: interaction.commandName,
                },
            });

            return;
        }

        try {
            await command.execute(interaction);
        }
        catch (error) {
            logger.log(logger.logLevels.ERROR, error);
            await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });

            // Report error to PM2 dashboard
            metrics.interactionErrors.inc();
            metrics.io.notifyError(new Error('Error executing interaction'), {
                custom: {
                    interactionCommand: interaction.commandName,
                    error: error,
                },
            });
        }
        // Successful Execution, report as a PM2 metric
        // If the bot gets a lot of use, consider removing this for performance
        metrics.interactionSuccess();

    }
    else if (interaction.isButton()) {
        interactionListener.buttonInteraction(interaction);
    }
    else if (interaction.isStringSelectMenu()) {
        // respond to the select menu
    }
});

// Joined a server
client.on(Events.GuildCreate, guild => {
    // Report current server count with PM2 (Servers counted anonymously)
    metrics.serverCount.set(guild.client.guilds.cache.size);
});

// Removed from a server
client.on(Events.GuildDelete, guild => {
    // Report current server count with PM2 (Servers counted anonymously)
    metrics.serverCount.set(guild.client.guilds.cache.size);
});

// Log in to Discord with your client's token
client.login(token);