//
// discord_handler.ts
//
// Written by: Oliver Akins (2019/11/23 - 2019/12/19)
//


import { log_error, log } from "../utils/webhook";
import { HANDLE_MESSAGE } from "../cmd_handler";
import { LOAD_CONFIG } from "../utils/Config";
import { PERM } from "../constants";
const Eris = require("eris");



export const run_discord = (): void => {

	const config: config = LOAD_CONFIG();

	let bot = new Eris(config.DEV ? config.discord.DEV_TOKEN : config.discord.OAUTH_TOKEN);


	bot.on("ready", () => {
		log({ msg: `* Connected to Discord gateway` });
	});


	// Message handler
	bot.on("messageCreate", (msg: any) => {
		try {

			// Ensure message to parse
			if (msg.content.length === 0) { return; };


			// SECTION: Exit conditions

			// NOTE: Ensure not a system message
			if (msg.type !== 0) { return; }

			// NOTE: Ensure channel type is GUILD_TEXT
			else if (msg.channel.type !== 0) { return; }

			// NOTE: Ensure not a webhook or Clyde
			else if (msg.author.discriminator === "0000") { return; }

			// NOTE: Ensure not a bot
			else if (msg.member.bot) { return; }

			// !SECTION: Exit conditions


			var is_mod = msg.member.roles.filter(
				(x: string) => { return config.discord.MOD_ROLES.includes(x); }
			).length > 0;
			var is_admin = config.discord.ADMIN.includes(msg.member.id);


			var level = PERM.ALL;
			if (is_mod) { level = PERM.MOD; };
			if (is_admin) { level = PERM.ADMIN; };


			var response: string | void = HANDLE_MESSAGE({
				channel: `Discord:${msg.member.guild.id}`,
				level: level,
				message: msg.content.trim().replace(/\n/g, ""),
				source: "Discord",
				user: msg.author.username,
				cooldown: true,
				test: false
			});

			// NOTE: Ensure response isn't null
			if (response !== null) {

				// NOTE: Reply with string
				bot.createMessage(msg.channel.id, response)
			};

		}

		// SECTION: Error Handling
		catch (error) {
			log_error({
				"embeds": [
					{
						"title": `${error.name}`,
						"color": 13238272,
						"description": `**Error Message:**\n\`\`\`\n${error.message}\n\`\`\``,
						"fields": [
							{
								"name": "**Message Context:**",
								"value": `\`\`\`\n${JSON.stringify(msg, null, 2)}\n\`\`\``
							},
							{
								"name": "**Message Content:**",
								"value": `\`\`\`json\n${msg.content}\`\`\``
							},
							{
								"name": "**Is Mod:**",
								"value": `\`${is_mod}\``,
								"inline": true
							},
							{
								"name": "**Is Admin:**",
								"value": `\`${is_admin}\``,
								"inline": true
							},
							{
								"name": "**Channel:**",
								"value": `\`${msg.channel.name}\``,
								"inline": true
							},
							{
								"name": "Source",
								"value": "Discord",
								"inline": true
							}
						]
					}
				]
			});
		};
		// !SECTION: Error Handling
	});

	bot.connect();
};