hogumathi-app/extensions/twitter_v2_facade/view_model.py

from dataclasses import replace

from flask import g, request

from twitter_v2.types import Tweet, TweetExpansions

from hogumathi_app.view_model import FeedServiceUser, FeedItem, FeedItemAction, CollectionPage, PublicMetrics, Card, MediaItem

from . import oauth2_login

url_for = oauth2_login.url_for_with_me

def user_model_dc (user):
    
    fsu = FeedServiceUser(
        id = user.id,
        name = user.name,
        username = user.username,
        created_at = user.created_at,
        description = user.description,
        preview_image_url = user.profile_image_url,
        website = user.url,
        is_verified = user.verified,
        is_protected = user.protected,
        location = user.location,
        
        url = url_for('twitter_v2_facade.get_profile_html', user_id=user.id),
        source_url = f'https://twitter.com/{user.username}',
        
        raw_user = user
    )
    
    return fsu


def tweet_model_dc_vm (includes: TweetExpansions, tweet: Tweet, me, my_url_for=url_for, reply_depth=0, expand_path=None) -> FeedItem:
    
    # retweeted_by, avi_icon_url, display_name, handle, created_at, text
    
    
    user = list(filter(lambda u: u.id == tweet.author_id, includes.users))[0]
    
    published_by = user_model_dc(user)
    
    url = my_url_for('twitter_v2_facade.get_tweet_html', tweet_id=tweet.id, view='tweet')
    source_url = 'https://twitter.com/{}/status/{}'.format(user.username, tweet.id)
    
    avi_icon_url = url_for('get_image', url=user.profile_image_url)
    
    retweet_of = None
    quoted = None
    replied_to = None
    
    if tweet.referenced_tweets:
        retweet_of = list(filter(lambda r: r.type == 'retweeted', tweet.referenced_tweets))
        quoted = list(filter(lambda r: r.type == 'quoted', tweet.referenced_tweets))
        replied_to = list(filter(lambda r: r.type == 'replied_to', tweet.referenced_tweets))
    
    if reply_depth:
        if expand_path:
            expand_path += f',{tweet.id}'
        else:
            expand_path = tweet.id
    
    actions = {
        'view_replies': FeedItemAction('twitter_v2_facade.get_tweet_html', {'tweet_id': tweet.conversation_id, 'view': 'replies', 'expand': expand_path}),
        
        'view_thread': FeedItemAction('twitter_v2_facade.get_tweet_html', {'tweet_id': tweet.conversation_id, 'view': 'thread'}),
        'view_conversation': FeedItemAction('twitter_v2_facade.get_tweet_html', {'tweet_id': tweet.conversation_id, 'view': 'conversation'}),
    }
    
    if reply_depth:
        vr = actions['view_replies']
        url = url_for(vr.route, **vr.route_params)
    
    if g.get('twitter_user'):
        actions.update(
            bookmark = FeedItemAction('twitter_v2_facade.post_tweet_bookmark', {'tweet_id': tweet.id}),
            delete_bookmark = FeedItemAction('twitter_v2_facade.delete_tweet_bookmark', {'tweet_id': tweet.id}),
            
            retweet = FeedItemAction('twitter_v2_facade.post_tweet_retweet', {'tweet_id': tweet.id})
            )
    
    if g.twitter_live_enabled:
        actions.update(
            view_activity = FeedItemAction('twitter_v2_live_facade.get_tweet_activity_html', {'tweet_id': tweet.id})
            )
    
    t = FeedItem(
        id = tweet.id,
        text = tweet.text,
        created_at = tweet.created_at,
        published_by = published_by,
        author_is_verified = user.verified,
        url = url,
        
        conversation_id = tweet.conversation_id,
        
        avi_icon_url = avi_icon_url,
        
        display_name = user.name,
        handle = user.username,
        
        author_url = my_url_for('twitter_v2_facade.get_profile_html', user_id=user.id),
        author_id = user.id,
        
        source_url = source_url,
        source_author_url = 'https://twitter.com/{}'.format(user.username),
        #'is_edited': len(tweet['edit_history_tweet_ids']) > 1
        
        actions = actions,
    )
    
    if reply_depth:
        t = replace(t, reply_depth = reply_depth)
    
    # HACK we should not refer to the request directly...
    if request and request.args.get('marked_reply') == str(t.id):
        t = replace(t, is_marked = True)
    
    # This is where we should put "is_bookmark", "is_liked", "is_in_collection", etc...
    
    if tweet.entities:
        if tweet.entities.urls:
            urls = list(filter(lambda u: u.title and u.description, tweet.entities.urls))
            
            if len(urls):
                url = urls[0]
                card = Card(
                    display_url = url.display_url.split('/')[0],
                    source_url = url.unwound_url,
                    content = url.description,
                    title = url.title
                )
                
                if url.images:
                    print(url.images)
                    card = replace(card, 
                        preview_image_url = url_for('get_image', url=url.images[1].url),
                        image_url = url_for('get_image', url=url.images[0].url)
                        )
                
                t = replace(t, card = card)
    
    if tweet.public_metrics:
        public_metrics = PublicMetrics(
            reply_count = tweet.public_metrics.reply_count,
            quote_count = tweet.public_metrics.quote_count,
            retweet_count = tweet.public_metrics.retweet_count,
            like_count = tweet.public_metrics.like_count
            )
        
        t = replace(t, public_metrics = public_metrics)
    
    if tweet.non_public_metrics:
        non_public_metrics = NonPublicMetrics(
            impression_count = tweet.non_public_metrics.impression_count,
            user_profile_clicks = tweet.non_public_metrics.user_profile_clicks,
            url_link_clicks = tweet.non_public_metrics.url_link_clicks
            )
        
        t = replace(t, non_public_metrics = non_public_metrics)
    
    if retweet_of and len(retweet_of):
        print('found retweet_of')
        t = replace(t, retweeted_tweet_id = retweet_of[0].id)
        
        retweeted_tweet:Tweet = list(filter(lambda t: t.id == retweet_of[0].id, includes.tweets))[0]
        
        rt = tweet_model_dc_vm(includes, retweeted_tweet, me)
        
        t = replace(rt,
            retweeted_tweet_id = retweet_of[0].id,
            source_retweeted_by_url = 'https://twitter.com/{}'.format(user.username),
            retweeted_by = user.name,
            retweeted_by_url = url_for('.get_profile_html', user_id=user.id)
            )
    
    
    try:
        if tweet.attachments and tweet.attachments.media_keys and includes.media:
            
            media_keys = tweet.attachments.media_keys
            
            def first_media (mk):
                medias = list(filter(lambda m: m.media_key == mk, includes.media))
                if len(medias):
                    return medias[0]
                return None
            
            media = list(filter(lambda m: m != None, map(first_media, media_keys)))
            
            photos = filter(lambda m: m.type == 'photo', media)
            videos = filter(lambda m: m.type == 'video', media)
            
            photo_media = map(lambda p: MediaItem(
                media_key = p.media_key,
                type = 'photo',
                preview_image_url = url_for('get_image', url=p.url + '?name=tiny&format=webp'),
                url = url_for('get_image', url=p.url),
                width = p.width, 
                height = p.height
                ), photos)
            
            def video_to_mi (v):
                use_hls = False # mainly iOS
                max_bitrate = 100000000
                
                if use_hls:
                    variants = list(filter(lambda var: var.content_type == 'application/x-mpegURL'))
                else:
                    
                    variants = list(filter(lambda var: var.content_type != 'application/x-mpegURL' and var.bit_rate <= max_bitrate, v.variants))
                
                variants.sort(key=lambda v: v.bit_rate, reverse=True)
                
                url = None
                content_type = None
                size = None
                if len(variants):
                    if len(variants) > 1:
                        print('multiple qualifying variants (using first):')
                        print(variants)
                    variant = variants[0]
                    
                    url = url_for('get_image', url=variant.url)
                    content_type = variant.content_type
                    size = int(v.duration_ms / 1000 * variant.bit_rate)
                
                public_metrics = None
                if v.public_metrics and v.public_metrics.view_count:
                    public_metrics = PublicMetrics(
                        view_count = v.public_metrics.view_count
                    )
                
                mi = MediaItem(
                    media_key = v.media_key,
                    type = 'video',
                    preview_image_url = url_for('get_image', url=v.preview_image_url + '?name=tiny&format=webp'),
                    image_url = url_for('get_image', url=v.preview_image_url),
                    width = v.width,
                    height = v.height,
                    url=url,
                    content_type = content_type,
                    duration_ms = v.duration_ms,
                    size = size,
                    public_metrics = public_metrics
                    )
                
                return mi
            
            video_media = map(video_to_mi, videos)
            
            
            
            t = replace(t,
                photos = list(photo_media),
                videos = list(video_media)
                )
                
        elif tweet.attachments and tweet.attachments.media_keys and not includes.media:
            print('tweet had attachments and media keys, but no expansion media content was given')
            print(tweet.attachments.media_keys)
        
    except:
        # it seems like this comes when we have a retweeted tweet with media on it.
        print('exception adding attachments to tweet:')
        print(tweet)
        print('view tweet:')
        print(t)
        print('included media:')
        print(includes.media)
        
        raise 'exception adding attachments to tweet'
        
    
    
    try:
        if quoted and len(quoted):
            t = replace(t, quoted_tweet_id = quoted[0].id)
            
            quoted_tweets = list(filter(lambda t: t.id == quoted[0].id, includes.tweets))
            
            if len(quoted_tweets):
                t = replace(t, quoted_tweet = tweet_model_dc_vm(includes, quoted_tweets[0], me))
    except:
        raise 'error adding quoted tweet'
        
    try:
        if replied_to and len(replied_to) and includes.tweets:
            t = replace(t, replied_tweet_id = replied_to[0].id)
            
            if reply_depth < 1:
                
                replied_tweets = list(filter(lambda t: t.id == replied_to[0].id, includes.tweets))
                if len(replied_tweets):
                    t = replace(t, replied_tweet = tweet_model_dc_vm(includes, replied_tweets[0], me, reply_depth=reply_depth + 1))
                else:
                    print("No replied tweet found (t={}, rep={})".format(t.id, t.replied_tweet_id))
    except:
        raise 'error adding replied_to tweet'
    
    return t