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d6d292e | 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 | import json
from fastapi import APIRouter, Request, Depends
from fastapi.responses import HTMLResponse, RedirectResponse, StreamingResponse
from sqlalchemy.orm import Session
from database import get_db, User, MemoryProfile, Conversation, Message
from auth import get_user_from_request
from rag import stream_rag_response, search_similar_memories, build_profile_context
router = APIRouter(prefix="/chat", tags=["chat"])
@router.get("", response_class=HTMLResponse)
async def chat_page(request: Request, db: Session = Depends(get_db)):
from fastapi.templating import Jinja2Templates
templates = Jinja2Templates(directory="templates")
user = get_user_from_request(request, db)
if not user:
return RedirectResponse(url="/auth/login", status_code=302)
profiles = db.query(MemoryProfile).filter(MemoryProfile.user_id == user.id).all()
conversations = []
if profiles:
profile_ids = [p.id for p in profiles]
conversations = db.query(Conversation).filter(
Conversation.user_id == user.id,
Conversation.profile_id.in_(profile_ids),
).order_by(Conversation.updated_at.desc()).limit(20).all()
return templates.TemplateResponse("chat.html", {
"request": request, "user": user, "profiles": profiles,
"conversations": conversations, "active_profile_id": None,
"active_conversation": None,
})
@router.get("/{profile_id}", response_class=HTMLResponse)
async def chat_profile(request: Request, profile_id: str, db: Session = Depends(get_db)):
from fastapi.templating import Jinja2Templates
templates = Jinja2Templates(directory="templates")
user = get_user_from_request(request, db)
if not user:
return RedirectResponse(url="/auth/login", status_code=302)
profile = db.query(MemoryProfile).filter(
MemoryProfile.id == profile_id, MemoryProfile.user_id == user.id
).first()
if not profile:
return RedirectResponse(url="/chat", status_code=302)
profiles = db.query(MemoryProfile).filter(MemoryProfile.user_id == user.id).all()
conversations = db.query(Conversation).filter(
Conversation.user_id == user.id,
Conversation.profile_id == profile_id,
).order_by(Conversation.updated_at.desc()).limit(20).all()
return templates.TemplateResponse("chat.html", {
"request": request, "user": user, "profiles": profiles,
"conversations": conversations, "active_profile_id": profile_id,
"active_conversation": None,
})
@router.get("/{profile_id}/conversation/{conversation_id}", response_class=HTMLResponse)
async def chat_conversation(request: Request, profile_id: str, conversation_id: str, db: Session = Depends(get_db)):
from fastapi.templating import Jinja2Templates
templates = Jinja2Templates(directory="templates")
user = get_user_from_request(request, db)
if not user:
return RedirectResponse(url="/auth/login", status_code=302)
conversation = db.query(Conversation).filter(
Conversation.id == conversation_id,
Conversation.user_id == user.id,
).first()
if not conversation:
return RedirectResponse(url="/chat", status_code=302)
profile = db.query(MemoryProfile).filter(
MemoryProfile.id == profile_id, MemoryProfile.user_id == user.id
).first()
profiles = db.query(MemoryProfile).filter(MemoryProfile.user_id == user.id).all()
conversations = db.query(Conversation).filter(
Conversation.user_id == user.id,
Conversation.profile_id == profile_id,
).order_by(Conversation.updated_at.desc()).limit(20).all()
messages = db.query(Message).filter(Message.conversation_id == conversation_id).order_by(Message.created_at).all()
return templates.TemplateResponse("chat.html", {
"request": request, "user": user, "profiles": profiles,
"conversations": conversations, "active_profile_id": profile_id,
"active_conversation": conversation, "messages": messages,
})
@router.post("/message")
async def send_message(request: Request, db: Session = Depends(get_db)):
from database import SessionLocal
body = await request.json()
profile_id = body.get("profile_id")
conversation_id = body.get("conversation_id")
content = body.get("content", "").strip()
def sse_error(msg):
def gen():
yield f"data: {json.dumps({'error': msg, 'done': True, 'conversation_id': conversation_id})}\n\n"
return StreamingResponse(gen(), media_type="text/event-stream")
if not content:
return sse_error("Empty message")
user = get_user_from_request(request, db)
if not user:
return sse_error("Unauthorized")
profile = db.query(MemoryProfile).filter(
MemoryProfile.id == profile_id, MemoryProfile.user_id == user.id
).first()
if not profile:
return sse_error("Profile not found")
if not conversation_id:
conv = Conversation(user_id=user.id, profile_id=profile_id, title=content[:50])
db.add(conv)
db.commit()
db.refresh(conv)
conversation_id = conv.id
else:
conv = db.query(Conversation).filter(
Conversation.id == conversation_id, Conversation.user_id == user.id
).first()
if not conv:
return sse_error("Conversation not found")
user_msg = Message(conversation_id=conversation_id, role="user", content=content)
db.add(user_msg)
db.commit()
memories = search_similar_memories(db, profile_id, content, limit=10)
conv_messages = db.query(Message).filter(
Message.conversation_id == conversation_id
).order_by(Message.created_at).all()
history = [{"role": m.role, "content": m.content} for m in conv_messages[:-1]]
saved_profile_id = profile_id
saved_conversation_id = conversation_id
saved_memories = memories
profile_context = build_profile_context(profile)
def event_stream():
db = SessionLocal()
try:
full_response = ""
is_error = False
try:
for token in stream_rag_response(content, profile_context, saved_memories, history):
full_response += token
if token.startswith("[ERROR]"):
is_error = True
yield f"data: {json.dumps({'error': token[8:].strip(), 'done': True, 'conversation_id': saved_conversation_id})}\n\n"
return
yield f"data: {json.dumps({'token': token})}\n\n"
except Exception as e:
full_response = f"Error generating response: {str(e)}"
is_error = True
yield f"data: {json.dumps({'error': full_response, 'done': True, 'conversation_id': saved_conversation_id})}\n\n"
return
if not full_response.strip():
yield f"data: {json.dumps({'error': 'No response generated. Please try again.', 'done': True, 'conversation_id': saved_conversation_id})}\n\n"
return
assistant_msg = Message(
conversation_id=saved_conversation_id,
role="assistant",
content=full_response,
sources=json.dumps([m["content"][:200] for m in saved_memories[:3]]),
)
db.add(assistant_msg)
db.commit()
yield f"data: {json.dumps({'done': True, 'conversation_id': saved_conversation_id})}\n\n"
finally:
db.close()
return StreamingResponse(event_stream(), media_type="text/event-stream")
@router.post("/{conversation_id}/delete")
async def delete_conversation(request: Request, conversation_id: str, db: Session = Depends(get_db)):
user = get_user_from_request(request, db)
if not user:
return RedirectResponse(url="/auth/login", status_code=302)
conv = db.query(Conversation).filter(
Conversation.id == conversation_id, Conversation.user_id == user.id
).first()
if conv:
profile_id = conv.profile_id
db.delete(conv)
db.commit()
return RedirectResponse(url=f"/chat/{profile_id}", status_code=302)
return RedirectResponse(url="/chat", status_code=302)
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