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from datetime import datetime
import json
from typing import Any, Dict, Optional
import uuid
import re
import httpx
from api.config import (
MODEL_MAPPING,
USER_SELECTED_MODEL,
MODEL_PREFIXES,
MODEL_REFERERS,
MODEL_ALIASES,
headers,
AGENT_MODE,
TRENDING_AGENT_MODE,
BASE_URL,
)
from fastapi import HTTPException
from api.models import ChatRequest
from api.logger import setup_logger
logger = setup_logger(__name__)
def create_chat_completion_data(
content: str, model: str, timestamp: int, finish_reason: Optional[str] = None
) -> Dict[str, Any]:
return {
"id": f"chatcmpl-{uuid.uuid4()}",
"object": "chat.completion.chunk",
"created": timestamp,
"model": model,
"choices": [
{
"index": 0,
"delta": {"content": content, "role": "assistant"},
"finish_reason": finish_reason,
}
],
"usage": None,
}
def message_to_dict(message):
if isinstance(message.content, str):
return {"role": message.role, "content": message.content}
elif isinstance(message.content, list) and len(message.content) == 2:
return {
"role": message.role,
"content": message.content[0]["text"],
"data": {
"imageBase64": message.content[1]["image_url"]["url"],
"fileText": "",
"title": "snapshot",
},
}
else:
return {"role": message.role, "content": message.content}
def get_full_model_name(model: str) -> str:
# Handle aliases
return MODEL_ALIASES.get(model, model)
def get_model_prefix(model: str) -> str:
return MODEL_PREFIXES.get(model, "")
def get_referer_url(model: str) -> str:
referer_path = MODEL_REFERERS.get(model, f"/?model={model}")
return f"{BASE_URL}{referer_path}"
async def process_streaming_response(request: ChatRequest):
model = get_full_model_name(request.model)
agent_mode = AGENT_MODE.get(model, {})
trending_agent_mode = TRENDING_AGENT_MODE.get(model, {})
prefix = get_model_prefix(model)
# Construct formatted prompt
formatted_prompt = ""
for msg in request.messages:
role = msg.role.capitalize()
content = msg.content
if isinstance(content, list) and len(content) == 2:
# Handle image content
content = f"FILE:BB\n$#$\n\n$#$\n{msg.content[0]['text']}"
if role and content:
formatted_prompt += f"{role}: {content}\n"
if prefix:
formatted_prompt = f"{prefix} {formatted_prompt}".strip()
json_data = {
"messages": [
{
"role": msg.role,
"content": msg.content[0]["text"] if isinstance(msg.content, list) else msg.content,
"data": msg.content[1]["image_url"]["url"] if isinstance(msg.content, list) and len(msg.content) == 2 else None,
}
for msg in request.messages
],
"previewToken": None,
"userId": None,
"codeModelMode": True,
"agentMode": agent_mode,
"trendingAgentMode": trending_agent_mode,
"isMicMode": False,
"userSystemPrompt": None,
"maxTokens": request.max_tokens,
"playgroundTopP": request.top_p,
"playgroundTemperature": request.temperature,
"isChromeExt": False,
"githubToken": None,
"clickedAnswer2": False,
"clickedAnswer3": False,
"clickedForceWebSearch": False,
"visitFromDelta": False,
"mobileClient": False,
"userSelectedModel": USER_SELECTED_MODEL.get(model, model),
}
async with httpx.AsyncClient() as client:
try:
async with client.stream(
"POST",
f"{BASE_URL}/api/chat",
headers=headers,
json=json_data,
timeout=100,
) as response:
response.raise_for_status()
async for line in response.aiter_lines():
timestamp = int(datetime.now().timestamp())
if line:
content = line
# Clean the response if necessary
if content.startswith("$@$v=undefined-rv1$@$"):
content = content[21:]
yield f"data: {json.dumps(create_chat_completion_data(content, model, timestamp))}\n\n"
# Indicate the end of the stream
timestamp = int(datetime.now().timestamp())
yield f"data: {json.dumps(create_chat_completion_data('', model, timestamp, 'stop'))}\n\n"
yield "data: [DONE]\n\n"
except httpx.HTTPStatusError as e:
logger.error(f"HTTP error occurred: {e}")
raise HTTPException(status_code=e.response.status_code, detail=str(e))
except httpx.RequestError as e:
logger.error(f"Error occurred during request: {e}")
raise HTTPException(status_code=500, detail=str(e))
async def process_non_streaming_response(request: ChatRequest):
model = get_full_model_name(request.model)
agent_mode = AGENT_MODE.get(model, {})
trending_agent_mode = TRENDING_AGENT_MODE.get(model, {})
prefix = get_model_prefix(model)
# Construct formatted prompt
formatted_prompt = ""
for msg in request.messages:
role = msg.role.capitalize()
content = msg.content
if isinstance(content, list) and len(content) == 2:
# Handle image content
content = f"FILE:BB\n$#$\n\n$#$\n{msg.content[0]['text']}"
if role and content:
formatted_prompt += f"{role}: {content}\n"
if prefix:
formatted_prompt = f"{prefix} {formatted_prompt}".strip()
json_data = {
"messages": [
{
"role": msg.role,
"content": msg.content[0]["text"] if isinstance(msg.content, list) else msg.content,
"data": msg.content[1]["image_url"]["url"] if isinstance(msg.content, list) and len(msg.content) == 2 else None,
}
for msg in request.messages
],
"previewToken": None,
"userId": None,
"codeModelMode": True,
"agentMode": agent_mode,
"trendingAgentMode": trending_agent_mode,
"isMicMode": False,
"userSystemPrompt": None,
"maxTokens": request.max_tokens,
"playgroundTopP": request.top_p,
"playgroundTemperature": request.temperature,
"isChromeExt": False,
"githubToken": None,
"clickedAnswer2": False,
"clickedAnswer3": False,
"clickedForceWebSearch": False,
"visitFromDelta": False,
"mobileClient": False,
"userSelectedModel": USER_SELECTED_MODEL.get(model, model),
}
async with httpx.AsyncClient() as client:
try:
response = await client.post(
f"{BASE_URL}/api/chat",
headers=headers,
json=json_data,
timeout=100,
)
response.raise_for_status()
full_response = response.text
# Clean the response if necessary
if full_response.startswith("$@$v=undefined-rv1$@$"):
full_response = full_response[21:]
return {
"id": f"chatcmpl-{uuid.uuid4()}",
"object": "chat.completion",
"created": int(datetime.now().timestamp()),
"model": model,
"choices": [
{
"index": 0,
"message": {"role": "assistant", "content": full_response},
"finish_reason": "stop",
}
],
"usage": None,
}
except httpx.HTTPStatusError as e:
logger.error(f"HTTP error occurred: {e}")
raise HTTPException(status_code=e.response.status_code, detail=str(e))
except httpx.RequestError as e:
logger.error(f"Error occurred during request: {e}")
raise HTTPException(status_code=500, detail=str(e))
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