commands.js

/*
    commands.js

    Includes event handlers and message sending methods for both Discord and Telegram.
    (C) Adam Gincel 2018
*/

const fs = require("fs");
const prefixes = JSON.parse(fs.readFileSync("./prefix.json", "utf8"));
const p = prefixes.telegram;

async function genericSendMessage(text, platformObject, bots) {
    if (platformObject.platform == "telegram") {
        return await bots.telegram.sendMessage(platformObject.chatID, text, {parse_mode: "Markdown"});
    } else {
        return await platformObject.message.channel.send(text);
    }
}

async function genericEditMessage(text, platformObject, messageToEdit, bots) {
    if (platformObject.platform == "telegram") {
        return await bots.telegram.editMessageText(text, {chat_id: platformObject.chatID, message_id: messageToEdit.message_id, parse_mode: "Markdown"});
    } else {
        return await messageToEdit.edit(text);
    }
}

function isCommand(args, name) {
	return args[0] == p + name;
}

async function handle(text, args, platformObject, bots) {
    //passthrough functions so you don't have to send redundant info each and every time
    async function sendMessage (messageText) {
        return await genericSendMessage(messageText, platformObject, bots);
    }
    async function editMessage(newText, messageToEdit) {
        return await genericEditMessage(newText, platformObject, messageToEdit, bots);
    }
    function command(name) {
	return isCommand(args, name);
    } 


    //command replies
    if (command("ping")) {
        return await sendMessage("Hello, I am online.");
    } else if (command("help")) {
	let s = "Command Help:\n\n";
	let prefix = platformObject.platform == "telegram" ? prefixes.telegram : prefixes.discord;
	s += prefix + "ping - Check if the bot is online.\n";
	s += prefix + "edittest - Send a message, then instantly edit it.\n";
	return await sendMessage(s);
    } else if (command("edittest")) {
        let messageToEdit = await sendMessage("Hi, you shouldn't see this text for long.");
        return await editMessage("You should see this message!", messageToEdit);
    }
}

module.exports.handle = handle;