'use strict';

const config = require('config');
const dissectLink = require('../dissectLink.js');

function curatePosts(posts, ignore) {
    const processed = new Set();

    return posts.reduce((acc, post, index) => {
        const host = dissectLink(post.url);
        const ignoring = ignore ? ignore.find(prop => {
            return post[prop];
        }) : null;

        if(ignoring) {
            console.log('\x1b[33m%s\x1b[0m', `Ignoring ${ignoring} post '${post.title}' - ${post.url}`);

            return acc;
        }

        if(host) {
            if(config.fetch.avoidDuplicates && processed.has(host.id)) {
                console.log('\x1b[33m%s\x1b[0m', `Ignoring cross-post or repost '${post.title}' - ${post.url}`);

                return acc;
            }

            processed.add(host.id);
        }

        return acc.concat({
            id: post.id,
            index: index,
            title: post.title,
            text: post.selftext,
            user: post.user,
            permalink: 'https://reddit.com' + post.permalink,
            url: post.url,
            datetime: new Date(post.created_utc * 1000),
            subreddit: post.subreddit.display_name,
            preview: post.preview ? post.preview.images.map(image => image.source) : null,
            host
        });
    }, []);
};

module.exports = curatePosts;