'use strict';

const bhttp = require('bhttp');
const redgifs = require('./redgifs');

async function gfycat(host) {
    const res = await bhttp.get(`https://api.gfycat.com/v1/gfycats/${host.id}`);
    const data = await res.body;

    if (data.errorMessage) {
        const redirectRes = await bhttp.head(host.url, {
            followRedirects: false,
        });

        if (redirectRes.statusCode === 301) {
            // Gfycat redirects all NSFW gifs to RedGifs, likely the case
            return redgifs({
                ...host,
                url: `https://www.redgifs.com/watch/${host.id}`,
                method: 'redgifs',
                label: 'redgifs',
            });
        }

        throw new Error(`Gfycat API returned error for source '${host.url}' (${res.status}): ${data.errorMessage}`);
    }

    return {
        album: null,
        items: [{
            id: data.gfyItem.gfyName,
            url: data.gfyItem.webmUrl,
            title: data.gfyItem.title,
            description: data.gfyItem.description,
            type: 'video/webm',
            datetime: new Date(data.gfyItem.createDate * 1000),
            original: data.gfyItem,
        }],
    };
}

module.exports = gfycat;