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Services/p
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main
197
app/main.py
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app/main.py
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import os
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from flask import Flask, render_template, request, redirect, abort, url_for, session
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import requests
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from datetime import datetime
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from urllib.parse import urlencode
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def get_env_variable(var_name):
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value = os.environ.get(var_name)
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if not value:
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raise ValueError(f"Missing required environment variable: {var_name}")
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return value
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app = Flask(__name__)
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# Read environment variables outside the route function
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client_id = get_env_variable('CLIENT_ID')
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client_secret = get_env_variable('CLIENT_SECRET')
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redirect_uri = get_env_variable('REDIRECT_URI')
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optional_scopes = get_env_variable('OPTIONAL_SCOPES')
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database_url = get_env_variable('DATABASE_URL')
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secret_key = get_env_variable('APP_SECRET_KEY')
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# Set secret key to enable sessions
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app.secret_key = secret_key
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# https://www.inoreader.com/oauth2/auth
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# Corrected URL for Inoreader OAuth
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AUTH_URL = 'https://www.inoreader.com/oauth2/auth'
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#defining constant
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TOKEN_URL = 'https://www.inoreader.com/oauth2/token'
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USER_INFO_URL = 'https://www.inoreader.com/reader/api/0/user-info'
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@app.route('/')
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def home():
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if is_logged_in():
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return main_menu()
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else:
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return generate_login_page()
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def main_menu():
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token_id = session.get('token_id')
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token = get_token_from_database(token_id)
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user_info = get_user_info(token['access_token'])
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last_synced, next_sync = format_sync_times(token)
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return render_template('home.html', user_login=user_info.get('userName'),
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user_email=user_info.get('userEmail'),
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readwise_api_key=token.get('readwise_api_key', ''),
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last_synced=last_synced, next_sync=next_sync)
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def generate_login_page():
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session['csrf_protection_string'] = os.urandom(16).hex()
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oauth_params = {
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'client_id': client_id,
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'redirect_uri': redirect_uri,
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'response_type': 'code',
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'scope': optional_scopes,
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'state': session['csrf_protection_string']
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}
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oauth_url = f'{AUTH_URL}?{urlencode(oauth_params)}'
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return render_template('login.html', oauth_url=oauth_url)
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@app.route('/oauth-redirect')
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def oauth_redirect():
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auth_code = request.args.get('code')
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csrf_token = request.args.get('state')
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# Verify the CSRF protection string
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if csrf_token != session.get('csrf_protection_string'):
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abort(403, 'Invalid CSRF token. Please try again.')
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# Exchange authorization code for access and refresh tokens using the Inoreader API
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response = requests.post(
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TOKEN_URL,
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headers={'Accept': 'application/json'},
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data={
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'code': auth_code,
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'redirect_uri': redirect_uri,
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'client_id': client_id,
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'client_secret': client_secret,
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}
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)
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raise_for_status(response)
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token = response.json()
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# Fetch user information from Inoreader
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user_info = requests.get(USER_INFO_URL, headers={
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'Authorization': f'Bearer {token.get("access_token")}'
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}).json()
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# Save tokens for later use
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token_id = save_or_update_token(user_info.get('userEmail'), token)
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set_session_token_id(token_id)
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return redirect(url_for('home'))
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# logout
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@app.route('/logout', methods=['POST'])
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def logout():
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token_id = session.get('token_id')
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if not token_id:
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return redirect(url_for('home'))
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# remove token_id from session
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session.pop('token_id', None)
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# response = requests.put(f'{database_url}/token/{token_id}', headers={
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# 'Content-Type': 'application/json'
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# }, json={
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# 'is_logged_in': False
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# })
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# response.raise_for_status()
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return redirect(url_for('home'))
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@app.route('/readwise', methods=['POST'])
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def submit_readwise_api():
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token_id = session.get('token_id')
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if not token_id:
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return redirect(url_for('home'))
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response = requests.put(f'{database_url}/token/{token_id}', headers={
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'Content-Type': 'application/json'
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}, json={
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'readwise_api_key': request.form.get('readwise_api_key')
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})
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raise_for_status(response)
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return redirect(url_for('home'))
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def is_logged_in():
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token_id = session.get('token_id')
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if not token_id:
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return False
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response = requests.get(f'{database_url}/token/{token_id}')
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raise_for_status(response)
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resp_json = response.json()
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token = resp_json['token']
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return token.get('active', False)
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def save_or_update_token(email, access_token, refresh_token, expiration_seconds):
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response = requests.get(f'{database_url}/token?email={email}')
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raise_for_status(response)
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if response.status_code == 200:
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update_login(response.json()['token']['id'], access_token, refresh_token, expiration_seconds)
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else:
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add_login(email, access_token, refresh_token, expiration_seconds)
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def add_login(email, access_token, refresh_token, expiration_seconds):
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response = requests.post(
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f'{database_url}/token',
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headers={'Content-Type': 'application/json'},
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json={
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'email': email,
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'access_token': access_token,
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'refresh_token': refresh_token,
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'expiration_seconds': expiration_seconds
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}
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)
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raise_for_status(response)
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return response.json().get('id')
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def update_login(token_id, access_token, refresh_token, expiration_seconds):
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response = requests.put(
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f'{database_url}/token/{token_id}',
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headers={'Content-Type': 'application/json'},
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json={
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'access_token': access_token,
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'refresh_token': refresh_token,
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'expiration_seconds': expiration_seconds
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}
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)
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raise_for_status(response)
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return token_id
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def set_session_token_id(token_id):
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session['token_id'] = token_id
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def raise_for_status(response):
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if response.status_code not in range(200, 300):
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try:
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msg = response.json().get('error', 'No error message provided')
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except Exception:
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msg = response.text
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raise Exception(f'HTTPError: {response.status_code} - Message: {msg}')
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if __name__ == '__main__':
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app.run(host='0.0.0.0', debug=True, port=5000)
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@ -1,2 +0,0 @@
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Flask==3.0.1
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requests==2.31.0
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