import os
from importlib.util import find_spec
from configparser import ConfigParser

from flask import Flask, g, redirect, url_for, render_template, jsonify
from flask_cors import CORS


if find_spec('twitter_v2_facade'):
    from twitter_v2_facade import twitter_app as twitter_v2
    import oauth2_login
    twitter_enabled = True
else:
    print('twitter module not found.')
    twitter_enabled = False

if find_spec('twitter_archive_facade'):
    from twitter_archive_facade import twitter_app as twitter_archive
    archive_enabled = True
else:
    print('twitter archive module not found.')
    archive_enabled = False

if find_spec('mastodon_facade'):
    from mastodon_facade import twitter_app as mastodon
    mastodon_enabled = True
else:
    print('mastodon module not found.')
    mastodon_enabled = False

add_account_enabled = True

def import_env ():
    cp = ConfigParser()
    if os.path.exists('.env'):
        with open('.env') as stream:
            cp.read_string('[default]\n' + stream.read())
            os.environ.update(dict(cp['default']))



if __name__ == '__main__':
    import_env()

    PORT = int(os.environ.get('PORT', 5000))
    HOST = os.environ.get('HOST', '127.0.0.1')
    
    archive_enabled = os.environ.get('ARCHIVE_TWEETS_PATH') and True
    glitch_enabled = os.environ.get('PROJECT_DOMAIN') and True
    
    notes_app_url = os.environ.get('NOTES_APP_URL')
    
    if not os.path.exists('.data'):
        os.mkdir('.data')
    
    if not os.path.exists('.data/cache'):
        os.mkdir('.data/cache')
    
    api = Flask(__name__, static_url_path='')
    
    
    # HACK - environ from .env isn't set yet when the import happens. We should call an init function somewhere.
    oauth2_login.app_access_token = os.environ.get("BEARER_TOKEN")
    oauth2_login.app_consumer_key = os.environ.get("TWITTER_CONSUMER_KEY")
    oauth2_login.app_secret_key = os.environ.get("TWITTER_CONSUMER_SECRET")


    @api.before_request
    def add_config ():
        g.twitter_enabled = twitter_enabled
        g.archive_enabled = archive_enabled
        g.mastodon_enabled = mastodon_enabled
        
        g.add_account_enabled = add_account_enabled
        
        
        g.glitch_enabled = glitch_enabled
        
        if glitch_enabled:
            g.app_url = 'https://{}.glitch.me'.format( os.environ.get('PROJECT_DOMAIN') )
        else:
            g.app_url = 'http://{}:{}'.format('localhost', PORT)
            
        if notes_app_url:
            g.notes_app_url = notes_app_url
        

    
    @api.context_processor
    def inject_config ():
        config = {}
        config['twitter_enabled'] = twitter_enabled
        config['archive_enabled'] = archive_enabled
        config['mastodon_enabled'] = mastodon_enabled
        
        config['add_account_enabled'] = add_account_enabled
        
        config['glitch_enabled'] = glitch_enabled

        if notes_app_url:
            config['notes_app_url'] = notes_app_url
        
        
        return config
    
    api.secret_key = os.environ.get('FLASK_SECRET')
    
    api.config['TEMPLATES_AUTO_RELOAD'] = True

    api.register_blueprint(twitter_v2, url_prefix='/twitter')
    
    if archive_enabled:
        api.register_blueprint(twitter_archive, url_prefix='/twitter-archive')
    
    if mastodon_enabled:
        api.register_blueprint(mastodon, url_prefix='/mastodon')
    
    CORS(api)
    
    @api.get('/login.html')
    def get_login_html ():
        return render_template('login.html')
    
    @api.get('/')
    def index ():
        return redirect(url_for('.get_login_html'))
    
    @api.get('/brand/<brand_id>.html')
    def get_brand_html (brand_id):
        brand = {
            'id': 'ispoogedaily',
            'display_name': 'iSpooge Daily',
            'accounts': [
                'twitter:14520320',
                'mastodon:mastodon.cloud:109271381872332822'
            ]
        }
        
        return jsonify(brand)
        
    api.run(port=PORT, host=HOST)