'use strict';

const config = require('config');
const util = require('util');
const yargs = require('yargs').argv;
const snoowrap = require('snoowrap');
const methods = require('./methods/methods.js');
const curate = require('./curate.js');
const fetchContent = require('./fetchContent.js');

const reddit = new snoowrap(config.reddit.api);

function getSubmissions(users) {
    return users.reduce((chain, user) => {
        return chain.then(acc => {
            return reddit.getUser(user).getSubmissions({
                sort: yargs.sort || config.reddit.sort,
                limit: yargs.limit || config.reddit.limit
            }).then(submissions => {
                return acc.concat(submissions);
            });
        });
    }, Promise.resolve([]));
};

Promise.resolve().then(() => {
    if(yargs.user || yargs.users) {
        const users = yargs.users ? yargs.users.split(',') : [].concat(yargs.user);

        return getSubmissions(users);
    }

    return Promise.reject('Please supply at least one user with one or multiple --user, or --users!');
}).then(submissions => {
    return Promise.all(curate(submissions).reduce((acc, post) => {
        if(post.host && methods[post.host.method]) {
            acc = acc.concat(methods[post.host.method](post).then(content => {
                post.content = content;

                return post;
            }));
        } else {
            console.log('\x1b[33m%s\x1b[0m', `"${post.title}": '${post.url}' not supported :(`);
        }

        return acc;
    }, []));
}).then(posts => {
    return fetchContent(posts);
}).catch(error => {
    return console.log('\x1b[33m%s\x1b[0m', error);
});