hogumathi-app/mastodon_facade.py

from configparser import ConfigParser
import base64
from flask import json, Response, render_template, request, send_from_directory, Blueprint, url_for, session, redirect, g
from flask_cors import CORS
import sqlite3
import os
import json
import json_stream
from zipfile import ZipFile
import itertools
from urllib.parse import urlencode as urlencode_qs

import datetime
import dateutil
import dateutil.parser
import dateutil.tz

import requests

from mastodon_source import MastodonAPSource
from mastodon_v2_types import Status

from view_model import FeedItem, FeedItemAction, PublicMetrics

DATA_DIR='.data'

twitter_app = Blueprint('mastodon_facade', 'mastodon_facade',
    static_folder='static',
    static_url_path='',
    url_prefix='/')

@twitter_app.before_request
def add_module_nav_to_template_context ():
    
    me = request.args.get('me')
    
    if me and me.startswith('mastodon:'):
        youtube_user = session[ me ]
        
        g.module_nav = [
            dict(
                href = url_for('.get_timeline_home_html', me=me),
                label = 'Public Timeline',
                order = 100
            ),
            dict(
                href = url_for('.get_bookmarks_html', me=me),
                label = 'Bookmarks',
                order = 200
            )
        ]



def mastodon_model_dc_vm (post_data: Status) -> FeedItem:
    """
    This is the method we should use. The others should be refactored out.
    """
    
    print(post_data)
    
    user = post_data.account
    
    source_url = post_data.url
    avi_icon_url = user.avatar
    url = url_for('mastodon_facade.get_tweet_html', tweet_id=post_data.id)
    
    actions = {
        'bookmark': FeedItemAction('mastodon_facade.post_tweet_bookmark', {'tweet_id': post_data.id}),
        'delete_bookmark': FeedItemAction('mastodon_facade.delete_tweet_bookmark', {'tweet_id': post_data.id}),
        
        'retweet': FeedItemAction('mastodon_facade.post_tweet_retweet', {'tweet_id': post_data.id})
    }
    
    t = FeedItem(
        id = post_data.id,
        # hugely not a fan of allowing the server's HTML out. can we sanitize it ourselves?
        html = post_data.content, 
        url = url,
        source_url = source_url,
        created_at = post_data.created_at,
        avi_icon_url = avi_icon_url,
        display_name = user.display_name,
        handle = user.acct,
        
        author_url = url_for('mastodon_facade.get_profile_html', user_id = user.id, me='mastodon:mastodon.cloud:109271381872332822'),
        source_author_url =  user.url,
        
        public_metrics =  PublicMetrics(
            reply_count = post_data.replies_count,
            retweet_count = post_data.reblogs_count,
            like_count = post_data.favourites_count
        ),
        
        actions = actions,
        
        debug_source_data = post_data
    )
    

    return t

def register_app (instance):
    endpoint_url = g.app_url
    redirect_uri = endpoint_url + og_url_for('.get_loggedin_html')
    
    client_name = os.environ.get('MASTODON_CLIENT_NAME')

    
    url = f'https://{instance}/api/v1/apps'
    
    params = {
        'client_name': client_name,
        'redirect_uris': redirect_uri,
        'scopes': 'read write'
    }
    
    resp = requests.post(url, params=params)
    
    with open(f'{DATA_DIR}/mastodon-client_{instance}.json', 'wt') as f:
        f.write(resp.text)
        
    return resp


@twitter_app.get('/api/app/<instance>/register')
def post_api_app_instance_register (instance):
    
    if not instance:
        return 'pass isntance= in request params', 400
    
    resp = register_app(instance)
    
    return resp.text, resp.status_code

@twitter_app.get('/api/app/<instance>')
def get_api_app_instance (instance):
    
    with open(f'{DATA_DIR}/mastodon-client_{instance}.json', 'rt') as f:
        return Response(f.read(), mimetype='application/json')

@twitter_app.get('/login.html')
def get_login_html ():
    instance = request.args.get('instance')
    force_login = request.args.get('force_login')
    
    if not instance:
        return 'provide instance= in query string.', 400
    
    if not os.path.exists(f'{DATA_DIR}/mastodon-client_{instance}.json'):
        resp = register_app(instance)
        
        print(resp)
    
    with open(f'{DATA_DIR}/mastodon-client_{instance}.json', 'rt') as f:
        app_info = json.loads(f.read())
    
    params = {
        'client_id': app_info['client_id'],
        'redirect_uri': app_info['redirect_uri'],
        'scope': 'read write',
        
        'response_type': 'code'
    }
    
    if force_login:
        params['force_login'] = force_login
    
    url = f'https://{instance}/oauth/authorize?' + urlencode_qs(params)
    
    return redirect(url)

@twitter_app.get('/logged-in.html')
def get_logged_in_html ():
    code = request.args.get('code')
    instance = request.args.get('instance', 'mastodon.cloud')
    
    if not instance:
        return 'provide instance= in query string.', 400
    
    with open(f'{DATA_DIR}/mastodon-client_{instance}.json', 'rt') as f:
        app_info = json.loads(f.read())
    
    params = {
        'client_id': app_info['client_id'],
        'client_secret': app_info['client_secret'],
        
        'redirect_uri': app_info['redirect_uri'],
        'scope': 'read write',
        
        'grant_type': 'authorization_code',
        'code': code,
        # force_login: True
    }
    
    url = f'https://{instance}/oauth/token'
    
    resp = requests.post(url, data=params)
    
    auth_info = json.loads(resp.text)
    
    
    #auth_info = {"access_token":"6C6-hD2_OK1vDFc_WcPQnZC5KL0jOUePgQgMQELeV0k","token_type":"Bearer","scope":"read write","created_at":1670088545}
    
    access_token = auth_info['access_token']
    
    
    url = f'https://{instance}/api/v1/accounts/verify_credentials'
    
    
    headers = {
        'Authorization': f'Bearer {access_token}'
    }
    
    resp = requests.get(url, headers=headers)
    
    mastodon_user = json.loads(resp.text)
    
    me = f'mastodon:{instance}:{mastodon_user["id"]}'
    
    session_info = {
        **auth_info,
        
        'instance': instance,
        
        'id': mastodon_user['id'],
        'acct': mastodon_user['acct'],
        'username': mastodon_user['username'],
        'display_name': mastodon_user['display_name'],
        'source_url': mastodon_user['url'],
        'created_at': mastodon_user['created_at'],
    }
    
    session[me] = session_info
    
    return redirect(url_for('.get_timeline_home_html', me=me))
    
    #return resp.text, resp.status_code


@twitter_app.post('/data/statuses')
def post_tweets_create ():
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user['instance']
    access_token = mastodon_user["access_token"]
    
    text = request.form.get('text')
    in_reply_to_id = request.form.get('reply_to_tweet_id')

    headers = {
       'Authorization': f'Bearer {access_token}'
    }
    params = {
        'text': text
    }
    
    if in_reply_to_id:
        params['in_reply_to_id'] = in_reply_to_id
    
    url = f'https://{instance}/api/v1/statuses/{tweet_id}/bookmark'
    
    resp = requests.post(url, data=params, headers=headers)
    
    new_status = json.loads(resp.text)
    
    new_tweet_id=new_status['id']
    
    if 'HX-Request' in request.headers:
        return render_template('partial/compose-form.html', new_tweet_id=new_tweet_id, me=me)
    else:
        return resp.text, resp.status_code

@twitter_app.post('/data/status/<tweet_id>/retweet')
def post_tweet_retweet (tweet_id):
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user['instance']
    access_token = mastodon_user["access_token"]

    headers = {
       'Authorization': f'Bearer {access_token}'
    }

    url = f'https://{instance}/api/v1/statuses/{tweet_id}/reblog'
    
    resp = requests.post(url, headers=headers)
    
    # new_status = json.loads(resp.text)
    
    # new_tweet_id=new_status['id']
    ## old status is in reblog: {id:} property.
    
    # if 'HX-Request' in request.headers:
    #     return 'retweeted, new ID: ' + new_tweet_id
    # else:
    return resp.text, resp.status_code

@twitter_app.get('/status/<tweet_id>.html')
@twitter_app.get('/statuses.html')
def get_tweet_html (tweet_id = None):
    if not tweet_id:
        ids = request.args.get('ids').split(',')
        return f'tweets: {ids}'
    else:
        return 'tweet: {tweet_id}'


@twitter_app.get('/profile/<user_id>.html')
def get_profile_html (user_id):
    me = request.args.get('me')
    mastodon_user = session.get(me)
    
    max_id = request.args.get('max_id')
    
    instance = request.args.get('instance') or mastodon_user['instance']
    access_token = mastodon_user and mastodon_user.get('access_token')
    
    print(instance)
    
    headers = {}
    
    if access_token:
        headers.update({
           'Authorization': f'Bearer {access_token}'
        })
    
    mastodon_source = MastodonAPSource(f'https://{instance}', access_token)
    
    params = {}
    
    try:
        # if the UID isn't numeric then we'll fallback to string.
        url = f'https://{instance}/api/v1/accounts/{int(user_id)}'
    except:
        url = f'https://{instance}/api/v1/accounts/lookup'
        params = {
            'acct': user_id
        }
    
    resp = requests.get(url, params=params, headers=headers)

    account_info = json.loads(resp.text)
    
    
    user_id = account_info["id"]

    
    tweets = mastodon_source.get_user_statuses(user_id, max_id=max_id, return_dataclasses=True)


    #tweets = tweet_source.get_timeline("public", timeline_params)
    
    max_id = tweets[-1].id if len(tweets) else ''
    tweets = list(map(mastodon_model_dc_vm, tweets))
    
    print("max_id = " + max_id)
    
    query = {}
    
    if len(tweets):
        query = {
            #'next_data_hx_select': '#tweets',
            'next_data_url': url_for('.get_profile_html', user_id=user_id, me=me, max_id=max_id),
            'next_page_url': url_for('.get_profile_html', user_id=user_id, me=me, max_id=max_id)
        }
    
    user = {
            'id': user_id
        }
    
    #return Response(response_json, mimetype='application/json')
    
    if 'HX-Request' in request.headers:
        return render_template('partial/tweets-timeline.html', user = user, tweets = tweets, query = query, 
            me=me, mastodon_user=mastodon_user)
    else:
        return render_template('user-profile.html', user = user, tweets = tweets, query = query, 
            me=me, mastodon_user=mastodon_user)


@twitter_app.route('/latest.html', methods=['GET'])
def get_timeline_home_html (variant = "reverse_chronological"):
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user.get('instance')
    token = mastodon_user.get('access_token')
    
    max_id = request.args.get('max_id')

    tweet_source = MastodonAPSource(f"https://{instance}", token)
    
    timeline_params = {
        'local': True
    }
    
    if max_id:
        timeline_params['max_id'] = max_id
    
    tweets = tweet_source.get_timeline("public", timeline_params, return_dataclasses=True)
    
    max_id = tweets[-1].id if len(tweets) else ''
    tweets = list(map(mastodon_model_dc_vm, tweets))
    
    print("max_id = " + max_id)
    
    query = {}
    
    if len(tweets):
        query = {
            'next_data_url': url_for('.get_timeline_home_html', max_id=max_id, me=me),
            'next_page_url': url_for('.get_timeline_home_html', max_id=max_id, me=me)
        }
    
    user = {}
    
    #return Response(response_json, mimetype='application/json')
    
    return render_template('tweet-collection.html', user = user, tweets = tweets, query = query,
        me=me, mastodon_user=mastodon_user)



@twitter_app.get('/bookmarks.html')
def get_bookmarks_html ():
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user.get('instance')
    token = mastodon_user.get('access_token')
    
    max_id = request.args.get('max_id')

    tweet_source = MastodonAPSource(f"https://{instance}", token)
    
    tweets = tweet_source.get_bookmarks(max_id=max_id, return_dataclasses=True)
    
    #tweets = tweet_source.get_timeline("public", timeline_params)
    
    max_id = tweets[-1].id if len(tweets) else ''
    tweets = list(map(mastodon_model_dc_vm, tweets))
    
    print("max_id = " + max_id)
    
    query = {}
    
    if len(tweets):
        query = {
            'next_data_url': url_for('.get_bookmarks_html', me=me, max_id=max_id),
            'next_page_url': url_for('.get_bookmarks_html', me=me, max_id=max_id)
        }
    
    user = {}
    
    #return Response(response_json, mimetype='application/json')
    
    return render_template('tweet-collection.html', user = user, tweets = tweets, query = query, 
        me=me, mastodon_user=mastodon_user)


@twitter_app.post('/data/bookmarks/<tweet_id>')
def post_tweet_bookmark (tweet_id):
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user['instance']
    access_token = mastodon_user["access_token"]
    
    max_id = request.args.get('max_id')

    headers = {
       'Authorization': f'Bearer {access_token}'
    }
    params = {}
    
    url = f'https://{instance}/api/v1/statuses/{tweet_id}/bookmark'
    
    resp = requests.post(url, headers=headers)
    
    return resp.text, resp.status_code


@twitter_app.delete('/data/bookmarks/<tweet_id>')
def delete_tweet_bookmark (tweet_id):
    me = request.args.get('me')
    mastodon_user = session[me]
    
    instance = mastodon_user['instance']
    access_token = mastodon_user["access_token"]
    
    max_id = request.args.get('max_id')

    headers = {
       'Authorization': f'Bearer {access_token}'
    }
    params = {}
    
    url = f'https://{instance}/api/v1/statuses/{tweet_id}/unbookmark'
    
    resp = requests.post(url, headers=headers)
    
    return resp.text, resp.status_code