const Discord = require('discord.js');
const client = new Discord.Client();
const settings = require('./settings.json')
const Twit = require('twit');
const tClient = new Twit({
  consumer_key:         settings.twitter.consumer_key,
  consumer_secret:      settings.twitter.consumer_secret,
  access_token:         settings.twitter.access_token,
  access_token_secret:  settings.twitter.access_token_secret,
  timeout_ms:           60*1000,
});
const ownerID = settings.botInfo.ownerID;
const channelID = settings.botInfo.channelID;
const prefix = settings.botInfo.prefix;
const embedColor = 0x4099FF;

client.login(settings.botInfo.token);

client.on('ready', () => console.log('Logged in as ' + client.user.tag))

client.on('message', msg => {
    if (msg.author.id !== ownerID)
        return false;
    const args = msg.content.slice(prefix.length + 6);
    if (msg.content.startsWith(prefix + 'tweet')) {
        if (args.length > 140)
            return msg.channel.send(`Tweet too long. You're ${args.length - 140} characters over the limit!`);
        tClient.post('statuses/update', { status: args }, (err, data, response) => {
            if (err)
                return msg.channel.send('Something went wrong. \n' + err.stack);
            if (response.statusCode !== 200)
                return msg.channel.send('Something went wrong. Please try again later.')
            msg.channel.send({ embed: {
                color: embedColor,
                title: 'Tweet created',
                url: `https://twitter.com/${data.user.screen_name}/status/${data.id_str}`,
                description: data.text
            }})
        });
    };
});

client.once('ready', () => {
    const stream = tClient.stream('user');
    stream.on('tweet', async (tweet) => {
        if (tweet.user.screen_name === settings.twitter.handle)
            return false;
        let embed = await client.channels.get(channelID).send({ embed: {
            color: embedColor,
            author: { name: tweet.user.screen_name,
                      icon_url: tweet.user.profile_background_image_url_https,
                      url: `https://twitter.com/${tweet.user.screen_name}` },
            description: tweet.text,
            fields: [ { name: 'Tweet ID:', value: tweet.id_str } ],
            footer: { text: 'Tweet sent at' },
            timestamp: new Date(parseInt(tweet.timestamp_ms))
        }});
        embed.react('🔁');
    });
});

client.on('messageReactionAdd', (messageReaction, user) => {
	if (messageReaction.emoji.name === '🔁' && user.id === ownerID) {
        tClient.post('statuses/retweet/:id', { id: messageReaction.message.embeds[0].fields.filter(f => f.name === 'Tweet ID:')[0].value }, (err, data, response) => {
            if (!err && response.statusCode === 200)
                messageReaction.message.channel.send({ embed: {
                    color: embedColor,
                    description: 'Retweeted successfully.'
                }});
            else
                msg.channel.send('Something went wrong.')
        })
	}
})