'use strict';

const config = require('config');
const util = require('util');
const fs = require('fs-extra');
const yargs = require('yargs').argv;
const snoowrap = require('snoowrap');

const curateSubmissions = require('./curate/submissions.js');
const curateUser = require('./curate/user.js');
const methods = require('./methods/methods.js');
const interpolate = require('./interpolate.js');
const fetchItem = require('./fetchItem.js');
const fetchContent = require('./fetchContent.js');
const save = require('./save.js');
const textToStream = require('./textToStream.js');

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

function saveProfileDetails(user) {
    if(config.library.profile.image) {
        // pass profile image as item to interpolate extension variable
        const filepath = interpolate(config.library.profile.image, user, null, {
            url: user.profile.image
        });

        fetchItem(user.profile.image).then(stream => save(filepath, stream)).catch(error => {
            console.log('\x1b[33m%s\x1b[0m', `Could not save profile image for '${user.name}': ${error}`);
        });
    }

    if(config.library.profile.description) {
        if(user.profile.description) {
            const filepath = interpolate(config.library.profile.description, user);
            const stream = textToStream(user.profile.description);

            save(filepath, stream).catch(error => {
                console.log('\x1b[33m%s\x1b[0m', `Could not save profile description for '${user.name}': ${error}`);
            });
        } else {
            console.log('\x1b[33m%s\x1b[0m', `No profile description for '${user.name}'`);
        }
    }
};

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

if(!yargs.user && typeof yargs.users !== 'string') {
    return console.log('\x1b[31m%s\x1b[0m', 'Please supply at least one user with --user=[user], or multiple users with --users=[user1,user2] or --user=[user1] --user=[user2]');
}

const users = yargs.users ? yargs.users.split(',') : [].concat(yargs.user);

users.forEach(user => {
    return Promise.resolve().then(() => {
        // get reddit profile
        return reddit.getUser(user).fetch().then(curateUser);
    }).then(user => {
        return saveProfileDetails(user);
        // get submissions
    }).catch(error => {
        return console.log('\x1b[33m%s\x1b[0m', error);
    });
});

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

        return Promise.resolve().then(() => {
            if(config.library.profile) {
                return getProfiles(users);
            }
        }).then(() => {
            return getSubmissions(users, yargs.sort || config.reddit.sort, yargs.limit === undefined ? config.reddit.limit : yargs.limit);
        });
    }

    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[31m%s\x1b[0m', error);
});
*/