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import os
import uuid
import json
from datetime import datetime
from flask import Flask, render_template, request, jsonify, session, redirect, url_for
from flask_cors import CORS
import logging
# Configure logging
logging.basicConfig(level=logging.DEBUG)
app = Flask(__name__)
app.secret_key = os.environ.get("SESSION_SECRET", "whatsapp-clone-secret-key")
CORS(app)
# In-memory storage
users = {} # user_id: {name, email, unique_id, online, last_seen}
conversations = {} # conversation_id: {type: 'private'/'group', participants: [], messages: []}
user_conversations = {} # user_id: [conversation_ids]
def generate_unique_id():
"""Generate a unique 8-character ID for users"""
return str(uuid.uuid4())[:8].upper()
def get_current_user():
"""Get current user from session"""
user_id = session.get('user_id')
return users.get(user_id) if user_id else None
@app.route('/')
def landing():
"""Landing page"""
if 'user_id' in session and session['user_id'] in users:
return redirect(url_for('chat'))
return render_template('landing.html')
@app.route('/register')
def register_page():
"""Registration page"""
return render_template('register.html')
@app.route('/api/register', methods=['POST'])
def register():
"""Register a new user"""
try:
data = request.get_json()
name = data.get('name', '').strip()
email = data.get('email', '').strip()
if not name or not email:
return jsonify({'success': False, 'message': 'Name and email are required'})
# Check if email already exists
for user_id, user_data in users.items():
if user_data['email'] == email:
return jsonify({'success': False, 'message': 'Email already registered'})
# Create new user
user_id = str(uuid.uuid4())
unique_id = generate_unique_id()
users[user_id] = {
'name': name,
'email': email,
'unique_id': unique_id,
'online': True,
'last_seen': datetime.now().isoformat(),
'user_id': user_id
}
user_conversations[user_id] = []
# Set session
session['user_id'] = user_id
return jsonify({
'success': True,
'user': {
'user_id': user_id,
'name': name,
'email': email,
'unique_id': unique_id
}
})
except Exception as e:
logging.error(f"Registration error: {e}")
return jsonify({'success': False, 'message': 'Registration failed'})
@app.route('/chat')
def chat():
"""Main chat interface"""
if 'user_id' not in session or session['user_id'] not in users:
return redirect(url_for('landing'))
user = users[session['user_id']]
return render_template('chat.html', user=user)
@app.route('/settings')
def settings():
"""Settings page"""
if 'user_id' not in session or session['user_id'] not in users:
return redirect(url_for('landing'))
user = users[session['user_id']]
return render_template('settings.html', user=user)
@app.route('/api/find_user', methods=['POST'])
def find_user():
"""Find user by unique ID"""
try:
data = request.get_json()
unique_id = data.get('unique_id', '').strip().upper()
if not unique_id:
return jsonify({'success': False, 'message': 'Unique ID is required'})
# Find user by unique_id
for user_id, user_data in users.items():
if user_data['unique_id'] == unique_id:
return jsonify({
'success': True,
'user': {
'user_id': user_id,
'name': user_data['name'],
'unique_id': user_data['unique_id'],
'online': user_data['online']
}
})
return jsonify({'success': False, 'message': 'User not found'})
except Exception as e:
logging.error(f"Find user error: {e}")
return jsonify({'success': False, 'message': 'Search failed'})
@app.route('/api/start_conversation', methods=['POST'])
def start_conversation():
"""Start a private conversation or create a group"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
data = request.get_json()
conversation_type = data.get('type') # 'private' or 'group'
if conversation_type == 'private':
target_user_id = data.get('target_user_id')
if not target_user_id or target_user_id not in users:
return jsonify({'success': False, 'message': 'Target user not found'})
# Check if conversation already exists
for conv_id, conv_data in conversations.items():
if (conv_data['type'] == 'private' and
set(conv_data['participants']) == {current_user_id, target_user_id}):
return jsonify({'success': True, 'conversation_id': conv_id})
# Create new private conversation
conv_id = str(uuid.uuid4())
conversations[conv_id] = {
'type': 'private',
'participants': [current_user_id, target_user_id],
'messages': [],
'created_at': datetime.now().isoformat()
}
# Add to user conversations
if current_user_id not in user_conversations:
user_conversations[current_user_id] = []
if target_user_id not in user_conversations:
user_conversations[target_user_id] = []
user_conversations[current_user_id].append(conv_id)
user_conversations[target_user_id].append(conv_id)
return jsonify({'success': True, 'conversation_id': conv_id})
elif conversation_type == 'group':
group_name = data.get('group_name', '').strip()
participant_ids = data.get('participant_ids', [])
if not group_name:
return jsonify({'success': False, 'message': 'Group name is required'})
if len(participant_ids) < 2 or len(participant_ids) > 9:
return jsonify({'success': False, 'message': 'Groups must have 3-10 members (including you)'})
# Add current user to participants
all_participants = list(set([current_user_id] + participant_ids))
# Validate all participants exist
for pid in all_participants:
if pid not in users:
return jsonify({'success': False, 'message': f'User {pid} not found'})
# Create group conversation
conv_id = str(uuid.uuid4())
conversations[conv_id] = {
'type': 'group',
'name': group_name,
'participants': all_participants,
'messages': [],
'created_at': datetime.now().isoformat(),
'created_by': current_user_id
}
# Add to all participants' conversations
for pid in all_participants:
if pid not in user_conversations:
user_conversations[pid] = []
user_conversations[pid].append(conv_id)
return jsonify({'success': True, 'conversation_id': conv_id})
return jsonify({'success': False, 'message': 'Invalid conversation type'})
except Exception as e:
logging.error(f"Start conversation error: {e}")
return jsonify({'success': False, 'message': 'Failed to start conversation'})
@app.route('/api/conversations')
def get_conversations():
"""Get user's conversations"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
user_convs = user_conversations.get(current_user_id, [])
result = []
for conv_id in user_convs:
if conv_id in conversations:
conv = conversations[conv_id]
# Get conversation info
conv_info = {
'id': conv_id,
'type': conv['type'],
'participants': []
}
if conv['type'] == 'private':
# For private chat, get the other user's info
other_user_id = next(pid for pid in conv['participants'] if pid != current_user_id)
other_user = users.get(other_user_id, {})
conv_info['name'] = other_user.get('name', 'Unknown User')
conv_info['online'] = other_user.get('online', False)
else:
# For group chat
conv_info['name'] = conv.get('name', 'Group Chat')
conv_info['online'] = True # Groups are always "online"
# Get participant info
for pid in conv['participants']:
if pid in users:
user_data = users[pid]
conv_info['participants'].append({
'user_id': pid,
'name': user_data['name'],
'unique_id': user_data['unique_id'],
'online': user_data['online']
})
# Get last message
if conv['messages']:
last_msg = conv['messages'][-1]
conv_info['last_message'] = {
'content': last_msg['content'],
'timestamp': last_msg['timestamp'],
'sender_name': users.get(last_msg['sender_id'], {}).get('name', 'Unknown')
}
else:
conv_info['last_message'] = None
result.append(conv_info)
return jsonify({'success': True, 'conversations': result})
except Exception as e:
logging.error(f"Get conversations error: {e}")
return jsonify({'success': False, 'message': 'Failed to load conversations'})
@app.route('/api/messages/<conversation_id>')
def get_messages(conversation_id):
"""Get messages for a conversation"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
if conversation_id not in conversations:
return jsonify({'success': False, 'message': 'Conversation not found'})
conv = conversations[conversation_id]
# Check if user is participant
if current_user_id not in conv['participants']:
return jsonify({'success': False, 'message': 'Access denied'})
# Format messages
messages = []
for msg in conv['messages']:
sender = users.get(msg['sender_id'], {})
messages.append({
'id': msg['id'],
'content': msg['content'],
'sender_id': msg['sender_id'],
'sender_name': sender.get('name', 'Unknown'),
'timestamp': msg['timestamp'],
'status': msg.get('status', 'sent'),
'seen_by': msg.get('seen_by', [])
})
return jsonify({'success': True, 'messages': messages})
except Exception as e:
logging.error(f"Get messages error: {e}")
return jsonify({'success': False, 'message': 'Failed to load messages'})
@app.route('/api/send_message', methods=['POST'])
def send_message():
"""Send a message"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
data = request.get_json()
conversation_id = data.get('conversation_id')
content = data.get('content', '').strip()
if not conversation_id or not content:
return jsonify({'success': False, 'message': 'Conversation ID and content required'})
if conversation_id not in conversations:
return jsonify({'success': False, 'message': 'Conversation not found'})
conv = conversations[conversation_id]
# Check if user is participant
if current_user_id not in conv['participants']:
return jsonify({'success': False, 'message': 'Access denied'})
# Create message
message = {
'id': str(uuid.uuid4()),
'content': content,
'sender_id': current_user_id,
'timestamp': datetime.now().isoformat(),
'status': 'sent',
'seen_by': [current_user_id] # Sender has seen the message
}
conversations[conversation_id]['messages'].append(message)
return jsonify({'success': True, 'message': message})
except Exception as e:
logging.error(f"Send message error: {e}")
return jsonify({'success': False, 'message': 'Failed to send message'})
@app.route('/api/mark_seen', methods=['POST'])
def mark_seen():
"""Mark messages as seen"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
data = request.get_json()
conversation_id = data.get('conversation_id')
if not conversation_id or conversation_id not in conversations:
return jsonify({'success': False, 'message': 'Invalid conversation'})
conv = conversations[conversation_id]
# Mark all messages as seen by current user
for message in conv['messages']:
if current_user_id not in message.get('seen_by', []):
message['seen_by'].append(current_user_id)
return jsonify({'success': True})
except Exception as e:
logging.error(f"Mark seen error: {e}")
return jsonify({'success': False, 'message': 'Failed to mark as seen'})
@app.route('/api/update_status', methods=['POST'])
def update_status():
"""Update user online status"""
try:
if 'user_id' not in session:
return jsonify({'success': False, 'message': 'Not authenticated'})
current_user_id = session['user_id']
data = request.get_json()
online = data.get('online', True)
if current_user_id in users:
users[current_user_id]['online'] = online
users[current_user_id]['last_seen'] = datetime.now().isoformat()
return jsonify({'success': True})
except Exception as e:
logging.error(f"Update status error: {e}")
return jsonify({'success': False, 'message': 'Failed to update status'})
@app.route('/logout')
def logout():
"""Logout user"""
if 'user_id' in session:
user_id = session['user_id']
if user_id in users:
users[user_id]['online'] = False
users[user_id]['last_seen'] = datetime.now().isoformat()
session.pop('user_id', None)
return redirect(url_for('landing'))
if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000, debug=True)
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