const { Events } = require('discord.js');
const { readDb } = require('../../backend/db.js');

module.exports = {
	name: Events.GuildMemberRemove,
	async execute(member) {
		try {
			const api = require('../api');
			const settings = (await api.getServerSettings(member.guild.id)) || {};
			const leave = { enabled: settings.leaveEnabled || false, channel: settings.leaveChannel || '', message: settings.leaveMessage || '{user} has left the server.' };

			if (leave && leave.enabled && leave.channel) {
				const channel = member.guild.channels.cache.get(leave.channel);
				if (channel) {
					try {
						const message = (leave.message).replace('{user}', member.user.toString());
						await channel.send(message);
					} catch (error) {
						console.error(`Could not send leave message to channel ${leave.channel} in guild ${member.guild.id}:`, error);
					}
				}
			}
		} catch (error) {
			console.error(`Error in guildMemberRemove event for guild ${member.guild.id}:`, error);
			// fallback to local db
			try {
				const db = readDb();
				const settings = db[member.guild.id];
				if (settings && settings.leaveEnabled && settings.leaveChannel) {
					const channel = member.guild.channels.cache.get(settings.leaveChannel);
					if (channel) {
						try {
							const message = (settings.leaveMessage || '{user} has left the server.').replace('{user}', member.user.toString());
							await channel.send(message);
						} catch (innerErr) { /* ignore */ }
					}
				}
			} catch (inner) { /* ignore */ }
		}
	},
};