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f7e32a5 | 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 | """Chat engine — manages conversations with streaming support."""
import json
import logging
from typing import Optional, AsyncIterator
from config import config
from database.repositories import ConversationRepo, MessageRepo
from agent.synapse_agent import SynapseAgent
from memory.manager import MemoryManager
logger = logging.getLogger("synapse.chat")
class ChatEngine:
"""Manages chat sessions with the Synapse agent."""
def __init__(self):
self._active_sessions: dict[str, SynapseAgent] = {}
def get_agent(self, user_id: str = "guest",
conversation_id: str = None,
mode: str = "agent",
personality_prompt: str = None) -> SynapseAgent:
key = f"{user_id}:{conversation_id or 'new'}"
if key not in self._active_sessions:
self._active_sessions[key] = SynapseAgent(
user_id=user_id,
conversation_id=conversation_id,
mode=mode,
personality_prompt=personality_prompt,
)
return self._active_sessions[key]
async def send_message(self, content: str, user_id: str = "guest",
conversation_id: str = None,
mode: str = "agent",
personality_prompt: str = None,
files: list[dict] = None) -> dict:
if not conversation_id:
conv = await ConversationRepo.create(user_id=user_id)
conversation_id = conv["id"]
await MessageRepo.create(
conversation_id=conversation_id,
role="user",
content=content,
metadata={"files": files} if files else None,
)
history = await MessageRepo.get_last_n(conversation_id, n=20)
conversation_messages = [
{"role": m["role"], "content": m["content"]} for m in history
]
agent = self.get_agent(user_id, conversation_id, mode, personality_prompt)
result = await agent.process(content, conversation_messages, mode)
await MessageRepo.create(
conversation_id=conversation_id,
role="assistant",
content=result.get("content", ""),
reasoning=json.dumps(result.get("reasoning")) if result.get("reasoning") else None,
tool_calls=json.dumps(result.get("tools_used")) if result.get("tools_used") else None,
model=result.get("model"),
)
msg_count = len(await MessageRepo.get_conversation_messages(conversation_id))
if msg_count == 2:
auto_title = content[:60] + ("..." if len(content) > 60 else "")
await ConversationRepo.update_title(conversation_id, auto_title)
result["conversation_id"] = conversation_id
return result
async def stream_message(self, content: str, user_id: str = "guest",
conversation_id: str = None,
mode: str = "agent",
personality_prompt: str = None) -> AsyncIterator[str]:
if not conversation_id:
conv = await ConversationRepo.create(user_id=user_id)
conversation_id = conv["id"]
yield json.dumps({"event": "conversation_created", "id": conversation_id})
await MessageRepo.create(
conversation_id=conversation_id,
role="user",
content=content,
)
history = await MessageRepo.get_last_n(conversation_id, n=20)
conversation_messages = [
{"role": m["role"], "content": m["content"]} for m in history
]
agent = self.get_agent(user_id, conversation_id, mode, personality_prompt)
from models.router import router
tool_defs = agent.tool_executor.get_tool_definitions()
system_msg = agent._build_system_message(tool_defs)
all_messages = [system_msg] + conversation_messages
try:
stream = await router.chat(
messages=all_messages,
temperature=config.groq.temperature,
max_tokens=config.groq.max_tokens,
stream=True,
)
full_content = ""
async for chunk in self._process_stream(stream):
full_content += chunk
yield json.dumps({"event": "token", "content": chunk})
await MessageRepo.create(
conversation_id=conversation_id,
role="assistant",
content=full_content,
)
yield json.dumps({"event": "done", "conversation_id": conversation_id})
except Exception as e:
logger.error(f"Stream error: {e}")
yield json.dumps({"event": "error", "message": str(e)})
async def _process_stream(self, stream) -> AsyncIterator[str]:
try:
async for chunk in stream:
if hasattr(chunk, "choices") and chunk.choices:
delta = chunk.choices[0].delta
if hasattr(delta, "content") and delta.content:
yield delta.content
elif isinstance(chunk, dict):
choices = chunk.get("choices", [])
if choices:
delta = choices[0].get("delta", {})
content = delta.get("content", "")
if content:
yield content
except Exception as e:
logger.error(f"Stream processing error: {e}")
yield f"\n[Stream error: {e}]"
async def get_conversation_history(self, conversation_id: str) -> list[dict]:
return await MessageRepo.get_conversation_messages(conversation_id)
async def create_conversation(self, user_id: str, title: str = "New Chat",
mode: str = "agent",
personality_id: str = "synapse",
folder_id: str = None) -> dict:
return await ConversationRepo.create(
user_id=user_id,
title=title,
personality_id=personality_id,
mode=mode,
folder_id=folder_id,
)
async def get_user_conversations(self, user_id: str,
folder_id: str = None) -> list[dict]:
return await ConversationRepo.get_user_conversations(user_id, folder_id)
async def delete_conversation(self, conv_id: str) -> bool:
return await ConversationRepo.delete(conv_id)
async def update_title(self, conv_id: str, title: str) -> None:
await ConversationRepo.update_title(conv_id, title)
async def toggle_pin(self, conv_id: str) -> None:
await ConversationRepo.toggle_pin(conv_id)
async def toggle_bookmark(self, conv_id: str) -> None:
await ConversationRepo.toggle_bookmark(conv_id)
async def search_conversations(self, user_id: str, query: str) -> list[dict]:
return await ConversationRepo.search(user_id, query)
async def search_messages(self, user_id: str, query: str) -> list[dict]:
return await MessageRepo.search(user_id, query)
chat_engine = ChatEngine()
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