'use strict';

const config = require('config');
const util = require('util');
const fs = require('fs-extra');
const snoowrap = require('snoowrap');
const omit = require('object.omit');
const exiftool = require('node-exiftool');
const exiftoolBin = require('dist-exiftool');

require('promise.prototype.finally').shim();
require('array.prototype.flatten').shim();

const reddit = new snoowrap(config.reddit.api);
const args = require('./cli.js');

const curatePosts = require('./curate/posts.js');

const interpolate = require('./interpolate.js');

const attachContentInfo = require('./fetch/info.js');
const fetchContent = require('./fetch/content.js');

const getPosts = require('./sources/getPosts.js')(reddit, args);
const getUserPosts = require('./sources/getUserPosts.js')(reddit, args);

if(!(args.users && args.users.length) && !(args.posts && args.posts.length)) {
    return console.log('\x1b[31m%s\x1b[0m', 'Please supply at least one user with --user <user> or one post with --post <post-id>. See --help for more options.');
}

const ep = new exiftool.ExiftoolProcess(exiftoolBin);

Promise.resolve().then(async () => {
    const initUsers = args.users ? args.users.reduce((acc, username) => ({...acc, [username]: {name: username, posts: []}}), {}) : {};
    let userPosts = await getUserPosts(initUsers);

    if(args.posts) {
        userPosts = await getPosts(args.posts, userPosts);
    }

    const curatedUserPosts = curatePosts(userPosts, args);
    const infoUserPosts = await attachContentInfo(curatedUserPosts);

    await ep.open();
    await Promise.all(Object.values(infoUserPosts).map(user => fetchContent(user, ep)));
    await ep.close();
}).catch(error => {
    return console.error(error);
});