New Provider 'Bestim' (#1416)

* Add new provider Bestim

g4f/Provider/Bestim.py

@@ -0,0 +1,78 @@
+from __future__         import annotations
+
+from ..typing           import Messages, List, Dict
+from .base_provider     import BaseProvider, CreateResult
+from uuid               import uuid4
+import requests
+
+def format_prompt(messages) -> List[Dict[str, str]]:
+
+    return [{"id": str(uuid4()), "content": '\n'.join(f'{m["role"]}: {m["content"]}' for m in messages), "from": "you"}]
+
+class Bestim(BaseProvider):
+    url = "https://chatgpt.bestim.org"
+    supports_gpt_35_turbo = True
+    supports_message_history = True
+    working = True
+    supports_stream = True
+
+    @staticmethod
+    def create_completion(
+        model: str,
+        messages: Messages,
+        stream: bool,
+        proxy: str = None, 
+        **kwargs
+    ) -> CreateResult:
+        
+        headers = {
+            'POST': '/chat/send2/ HTTP/3',
+            'Host': 'chatgpt.bestim.org',
+            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0',
+            'Accept': 'application/json, text/event-stream',
+            'Accept-Language': 'en-US,en;q=0.5',
+            'Accept-Encoding': 'gzip, deflate, br',
+            'Referer': 'https://chatgpt.bestim.org/chat/',
+            'Content-Type': 'application/json',
+            'Content-Length': '109',
+            'Origin': 'https://chatgpt.bestim.org',
+            'Cookie': 'NpZAER=qKkRHguMIOraVbJAWpoyzGLFjZwYlm; qKkRHguMIOraVbJAWpoyzGLFjZwYlm=8ebb5ae1561bde05354de5979b52c6e1-1704058188-1704058188; NpZAER_hits=2; _csrf-front=fcf20965823c0a152ae8f9cdf15b23022bb26cdc6bf32a9d4c8bfe78dcc6b807a%3A2%3A%7Bi%3A0%3Bs%3A11%3A%22_csrf-front%22%3Bi%3A1%3Bs%3A32%3A%22a5wP6azsc7dxV8rmwAXaNsl8XS1yvW5V%22%3B%7D',
+            'Alt-Used': 'chatgpt.bestim.org',
+            'Connection': 'keep-alive',
+            'Sec-Fetch-Dest': 'empty',
+            'Sec-Fetch-Mode': 'cors',
+            'Sec-Fetch-Site': 'same-origin',
+            'TE': 'trailers'
+        }
+
+        data = {
+
+            "messagesHistory": format_prompt(messages),
+            "type": "chat",
+        }
+            
+        response = requests.post(
+            url="https://chatgpt.bestim.org/chat/send2/",
+            headers=headers,
+            json=data,
+            proxies={"https": proxy}
+        )
+
+        response.raise_for_status()
+
+        for chunk in response.iter_lines():
+
+            if b"event: trylimit" not in chunk:
+
+                yield chunk.decode().removeprefix("data: ")
+
+
+
+
+
+
+            
+
+
+
+

g4f/Provider/__init__.py

@@ -54,6 +54,7 @@ from .Ylokh           import Ylokh
 from .You             import You
 from .Yqcloud         import Yqcloud
 from .GeekGpt         import GeekGpt
+from .Bestim          import Bestim
 
 import sys