1 files changed, 63 insertions, 136 deletions

diff --git a/g4f/api/__init__.py b/g4f/api/__init__.py
index 3f0778a1..9033aafe 100644
--- a/g4f/api/__init__.py
+++ b/g4f/api/__init__.py
@@ -1,21 +1,27 @@
-import ast
 import logging
-import time
 import json
-import random
-import string
 import uvicorn
 import nest_asyncio
 
 from fastapi           import FastAPI, Response, Request
-from fastapi.responses import StreamingResponse
-from typing            import List, Union, Any, Dict, AnyStr
-#from ._tokenizer       import tokenize
+from fastapi.responses import StreamingResponse, RedirectResponse, HTMLResponse, JSONResponse
+from pydantic          import BaseModel
+from typing            import List
 
 import g4f
-from .. import debug
-
-debug.logging = True
+import g4f.debug
+from g4f.client import Client
+from g4f.typing import Messages
+
+class ChatCompletionsConfig(BaseModel):
+    messages: Messages
+    model: str
+    provider: str | None 
+    stream: bool = False
+    temperature: float | None 
+    max_tokens: int = None
+    stop: list[str] | str | None
+    access_token: str | None
 
 class Api:
     def __init__(self, engine: g4f, debug: bool = True, sentry: bool = False,
@@ -25,169 +31,82 @@ class Api:
         self.sentry = sentry
         self.list_ignored_providers = list_ignored_providers
 
-        self.app = FastAPI()
+        if debug:
+            g4f.debug.logging = True
+        self.client = Client()
+
         nest_asyncio.apply()
+        self.app = FastAPI()
 
-        JSONObject = Dict[AnyStr, Any]
-        JSONArray = List[Any]
-        JSONStructure = Union[JSONArray, JSONObject]
+        self.routes()
 
+    def routes(self):
         @self.app.get("/")
         async def read_root():
-            return Response(content=json.dumps({"info": "g4f API"}, indent=4), media_type="application/json")
+            return RedirectResponse("/v1", 302)
 
         @self.app.get("/v1")
         async def read_root_v1():
-            return Response(content=json.dumps({"info": "Go to /v1/chat/completions or /v1/models."}, indent=4), media_type="application/json")
+            return HTMLResponse('g4f API: Go to '
+                                '<a href="/v1/chat/completions">chat/completions</a> '
+                                'or <a href="/v1/models">models</a>.')
 
         @self.app.get("/v1/models")
         async def models():
-            model_list = []
-            for model in g4f.Model.__all__():
-                model_info = (g4f.ModelUtils.convert[model])
-                model_list.append({
-                'id': model,
+            model_list = dict(
+                (model, g4f.ModelUtils.convert[model])
+                for model in g4f.Model.__all__()
+            )
+            model_list = [{
+                'id': model_id,
                 'object': 'model',
                 'created': 0,
-                'owned_by': model_info.base_provider}
-                )
-            return Response(content=json.dumps({
-                'object': 'list',
-                'data': model_list}, indent=4), media_type="application/json")
+                'owned_by': model.base_provider
+            } for model_id, model in model_list.items()]
+            return JSONResponse(model_list)
 
         @self.app.get("/v1/models/{model_name}")
         async def model_info(model_name: str):
             try:
-                model_info = (g4f.ModelUtils.convert[model_name])
-
-                return Response(content=json.dumps({
+                model_info = g4f.ModelUtils.convert[model_name]
+                return JSONResponse({
                     'id': model_name,
                     'object': 'model',
                     'created': 0,
                     'owned_by': model_info.base_provider
-                }, indent=4), media_type="application/json")
+                })
             except:
-                return Response(content=json.dumps({"error": "The model does not exist."}, indent=4), media_type="application/json")
+                return JSONResponse({"error": "The model does not exist."})
 
         @self.app.post("/v1/chat/completions")
-        async def chat_completions(request: Request, item: JSONStructure = None):
-            item_data = {
-                'model': 'gpt-3.5-turbo',
-                'stream': False,
-            }
-
-            # item contains byte keys, and dict.get suppresses error
-            item_data.update({
-                key.decode('utf-8') if isinstance(key, bytes) else key: str(value)
-                for key, value in (item or {}).items()
-            })
-            # messages is str, need dict
-            if isinstance(item_data.get('messages'), str):
-                item_data['messages'] = ast.literal_eval(item_data.get('messages'))
-
-            model = item_data.get('model')
-            stream = True if item_data.get("stream") == "True" else False
-            messages = item_data.get('messages')
-            provider = item_data.get('provider', '').replace('g4f.Provider.', '')
-            provider = provider if provider and provider != "Auto" else None
-            temperature = item_data.get('temperature')
-
+        async def chat_completions(config: ChatCompletionsConfig = None, request: Request = None, provider: str = None):
             try:
-                response = g4f.ChatCompletion.create(
-                    model=model,
-                    stream=stream,
-                    messages=messages,
-                    temperature = temperature,
-                    provider = provider,
+                config.provider = provider if config.provider is None else config.provider
+                if config.access_token is None and request is not None:
+                    auth_header = request.headers.get("Authorization")
+                    if auth_header is not None:
+                        config.access_token = auth_header.split(None, 1)[-1]
+
+                response = self.client.chat.completions.create(
+                    **dict(config),
                     ignored=self.list_ignored_providers
                 )
             except Exception as e:
                 logging.exception(e)
-                content = json.dumps({
-                    "error": {"message": f"An error occurred while generating the response:\n{e}"},
-                    "model": model,
-                    "provider": g4f.get_last_provider(True)
-                })
-                return Response(content=content, status_code=500, media_type="application/json")
-            completion_id = ''.join(random.choices(string.ascii_letters + string.digits, k=28))
-            completion_timestamp = int(time.time())
-
-            if not stream:
-                #prompt_tokens, _ = tokenize(''.join([message['content'] for message in messages]))
-                #completion_tokens, _ = tokenize(response)
-
-                json_data = {
-                    'id': f'chatcmpl-{completion_id}',
-                    'object': 'chat.completion',
-                    'created': completion_timestamp,
-                    'model': model,
-                    'provider': g4f.get_last_provider(True),
-                    'choices': [
-                        {
-                            'index': 0,
-                            'message': {
-                                'role': 'assistant',
-                                'content': response,
-                            },
-                            'finish_reason': 'stop',
-                        }
-                    ],
-                    'usage': {
-                        'prompt_tokens': 0, #prompt_tokens,
-                        'completion_tokens': 0, #completion_tokens,
-                        'total_tokens': 0, #prompt_tokens + completion_tokens,
-                    },
-                }
-
-                return Response(content=json.dumps(json_data, indent=4), media_type="application/json")
+                return Response(content=format_exception(e, config), status_code=500, media_type="application/json")
+
+            if not config.stream:
+                return JSONResponse(response.to_json())
 
             def streaming():
                 try:
                     for chunk in response:
-                        completion_data = {
-                            'id': f'chatcmpl-{completion_id}',
-                            'object': 'chat.completion.chunk',
-                            'created': completion_timestamp,
-                            'model': model,
-                            'provider': g4f.get_last_provider(True),
-                            'choices': [
-                                {
-                                    'index': 0,
-                                    'delta': {
-                                        'role': 'assistant',
-                                        'content': chunk,
-                                    },
-                                    'finish_reason': None,
-                                }
-                            ],
-                        }
-                        yield f'data: {json.dumps(completion_data)}\n\n'
-                        time.sleep(0.03)
-                    end_completion_data = {
-                        'id': f'chatcmpl-{completion_id}',
-                        'object': 'chat.completion.chunk',
-                        'created': completion_timestamp,
-                        'model': model,
-                        'provider': g4f.get_last_provider(True),
-                        'choices': [
-                            {
-                                'index': 0,
-                                'delta': {},
-                                'finish_reason': 'stop',
-                            }
-                        ],
-                    }
-                    yield f'data: {json.dumps(end_completion_data)}\n\n'
+                        yield f"data: {json.dumps(chunk.to_json())}\n\n"
                 except GeneratorExit:
                     pass
                 except Exception as e:
                     logging.exception(e)
-                    content = json.dumps({
-                        "error": {"message": f"An error occurred while generating the response:\n{e}"},
-                        "model": model,
-                        "provider": g4f.get_last_provider(True),
-                    })
-                    yield f'data: {content}'
+                    yield f'data: {format_exception(e, config)}'
 
             return StreamingResponse(streaming(), media_type="text/event-stream")
 
@@ -198,3 +117,11 @@ class Api:
     def run(self, ip):
         split_ip = ip.split(":")
         uvicorn.run(app=self.app, host=split_ip[0], port=int(split_ip[1]), use_colors=False)
+
+def format_exception(e: Exception, config: ChatCompletionsConfig) -> str:
+    last_provider = g4f.get_last_provider(True)
+    return json.dumps({
+        "error": {"message": f"ChatCompletionsError: {e.__class__.__name__}: {e}"},
+        "model": last_provider.get("model") if last_provider else config.model,
+        "provider": last_provider.get("name") if last_provider else config.provider
+    })
\ No newline at end of file