import { createSource, createSourceOptions, downloadImages, fetchChannel, getPostIdFromPathname } from "../lib.js"

let mastodon = {}

mastodon.createSource = (usertag, options, postReducerCallback, cache) => {
    let [ user, hostname ] = usertag.toLowerCase().split('@')
    
    let source = {
        type: 'mastodon',
        description: `Aggregate feed for @${user} at ${hostname}`,
        hostname,
        pathname: '@' + user + ".rss",
        name: `${hostname}-${user}`,
        displayName: user,
        user,
        ...createSourceOptions(options)
    }

    return createSource(source, fetchChannel, postReducerCallback, cache)
}

mastodon.isRepost = (post) => {
    // Mastodon's rss does not provide retweets/retoots
    return false
}

mastodon.pullImages = async (post, view, discardPostIfNoImages) => {
    let media = post.item.getElementsByTagName('media:content')
    let images = []

    for(let image of media) {
        images.push(image.getAttribute('url'))
    }

    if(!discardPostIfNoImages || media.length > 0) {
        post.images = await downloadImages(
            images,
            post.source,
            getPostIdFromPathname(post),
            view
        )
        return post
    }
}

export default mastodon