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73d7d26 eeb3363 73d7d26 eab9f14 73d7d26 eab9f14 73d7d26 c89717a fb8eda3 73d7d26 a433909 73d7d26 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 | from fastapi import WebSocket
from sqlalchemy.orm import Session
from typing import Dict, Optional
import json
from datetime import datetime
from models import Message, Conversation, ConversationMember, GroupMessage, GroupMember, Group, User
from chat import msg_to_dict, group_msg_to_dict
class ConnectionManager:
def __init__(self):
self.active: Dict[int, WebSocket] = {}
async def connect(self, websocket: WebSocket, user_id: int):
await websocket.accept()
self.active[user_id] = websocket
def disconnect(self, user_id: int):
self.active.pop(user_id, None)
async def send_to(self, user_id: int, data: dict):
ws = self.active.get(user_id)
if ws:
try:
await ws.send_text(json.dumps(data))
except Exception:
self.active.pop(user_id, None)
async def handle_dm(self, msg: dict, sender: User, db: Session):
conversation_id = msg.get("conversation_id")
target_user_id = msg.get("target_user_id")
ciphertext_for_recipient = msg.get("ciphertext_for_recipient")
ciphertext_for_sender = msg.get("ciphertext_for_sender")
if not ciphertext_for_recipient:
return
# Auto-create conversation if target_user_id is provided instead of conversation_id
if not conversation_id and target_user_id:
target = db.query(User).filter(User.id == target_user_id).first()
if not target:
return
my_ids = set(m.conversation_id for m in db.query(ConversationMember).filter(ConversationMember.user_id == sender.id).all())
their_ids = set(m.conversation_id for m in db.query(ConversationMember).filter(ConversationMember.user_id == target_user_id).all())
common = my_ids & their_ids
if common:
conversation_id = common.pop()
else:
conv = Conversation()
db.add(conv)
db.flush()
db.add(ConversationMember(conversation_id=conv.id, user_id=sender.id))
db.add(ConversationMember(conversation_id=conv.id, user_id=target_user_id))
db.flush()
conversation_id = conv.id
if not conversation_id:
return
# Verify sender is in conversation
membership = db.query(ConversationMember).filter(
ConversationMember.conversation_id == conversation_id,
ConversationMember.user_id == sender.id
).first()
if not membership:
return
# Save message
message = Message(
conversation_id=conversation_id,
sender_id=sender.id,
ciphertext_for_recipient=ciphertext_for_recipient,
ciphertext_for_sender=ciphertext_for_sender or ciphertext_for_recipient,
)
db.add(message)
db.commit()
db.refresh(message)
# Get all members of this conversation
members = db.query(ConversationMember).filter(
ConversationMember.conversation_id == conversation_id
).all()
for member in members:
payload = {
"type": "dm",
"conversation_id": conversation_id,
"message": msg_to_dict(message, member.user_id)
}
await self.send_to(member.user_id, payload)
async def handle_group(self, msg: dict, sender: User, db: Session):
group_id = msg.get("group_id")
ciphertext = msg.get("ciphertext")
iv = msg.get("iv")
encrypted_aes_keys = msg.get("encrypted_aes_keys", {})
if not group_id or not ciphertext or not iv:
return
# Verify membership
membership = db.query(GroupMember).filter(
GroupMember.group_id == group_id,
GroupMember.user_id == sender.id
).first()
if not membership:
return
import json as _json
message = GroupMessage(
group_id=group_id,
sender_id=sender.id,
ciphertext=ciphertext,
iv=iv,
encrypted_aes_keys=_json.dumps(encrypted_aes_keys),
)
db.add(message)
db.commit()
db.refresh(message)
members = db.query(GroupMember).filter(GroupMember.group_id == group_id).all()
for member in members:
payload = {
"type": "group",
"group_id": group_id,
"message": group_msg_to_dict(message, member.user_id)
}
await self.send_to(member.user_id, payload)
async def handle_typing(self, msg: dict, sender: User):
target_id = msg.get("target_id")
group_id = msg.get("group_id")
is_typing = msg.get("is_typing", False)
if target_id:
await self.send_to(target_id, {
"type": "typing",
"user_id": sender.id,
"display_name": sender.display_name,
"is_typing": is_typing,
"conversation_id": msg.get("conversation_id")
})
elif group_id:
# Would need to broadcast to all group members
pass
async def handle_call_offer(self, msg: dict, sender: User):
target_id = msg.get("target_id")
await self.send_to(target_id, {
"type": "call_offer",
"from": sender.id,
"from_display_name": sender.display_name,
"from_avatar_color": sender.avatar_color,
"call_type": msg.get("call_type", "audio"),
"sdp": msg.get("sdp")
})
async def handle_call_answer(self, msg: dict, sender: User):
target_id = msg.get("target_id")
await self.send_to(target_id, {
"type": "call_answer",
"from": sender.id,
"sdp": msg.get("sdp")
})
async def handle_ice_candidate(self, msg: dict, sender: User):
target_id = msg.get("target_id")
await self.send_to(target_id, {
"type": "ice_candidate",
"from": sender.id,
"candidate": msg.get("candidate")
})
async def handle_call_end(self, msg: dict, sender: User):
target_id = msg.get("target_id")
await self.send_to(target_id, {
"type": "call_end",
"from": sender.id
})
async def handle_video_toggle(self, msg: dict, sender: User):
target_id = msg.get("target_id")
await self.send_to(target_id, {
"type": "video_toggle",
"from": sender.id,
"enabled": msg.get("enabled", True),
"display_name": sender.display_name,
"avatar_color": sender.avatar_color
})
async def handle_read(self, msg: dict, sender: User, db: Session):
conversation_id = msg.get("conversation_id")
if conversation_id:
messages = db.query(Message).filter(
Message.conversation_id == conversation_id,
Message.sender_id != sender.id,
Message.is_read == False
).all()
if messages:
for m in messages:
m.is_read = True
db.commit()
sender_ids = set(m.sender_id for m in messages)
for sid in sender_ids:
await self.send_to(sid, {
"type": "read_receipt",
"conversation_id": conversation_id,
"read_by": sender.id
})
manager = ConnectionManager() |