1 files changed, 34 insertions, 20 deletions

diff --git a/g4f/Provider/Koala.py b/g4f/Provider/Koala.py
index 849bcdbe..14e533df 100644
--- a/g4f/Provider/Koala.py
+++ b/g4f/Provider/Koala.py
@@ -1,52 +1,60 @@
 from __future__ import annotations
 
 import json
-from aiohttp import ClientSession, BaseConnector
+from typing import AsyncGenerator, Optional, List, Dict, Union, Any
+from aiohttp import ClientSession, BaseConnector, ClientResponse
 
 from ..typing import AsyncResult, Messages
-from .base_provider import AsyncGeneratorProvider
+from .base_provider import AsyncGeneratorProvider, ProviderModelMixin
 from .helper import get_random_string, get_connector
 from ..requests import raise_for_status
 
-class Koala(AsyncGeneratorProvider):
-    url = "https://koala.sh"
+class Koala(AsyncGeneratorProvider, ProviderModelMixin):
+    url = "https://koala.sh/chat"
+    api_endpoint = "https://koala.sh/api/gpt/"
     working = True
-    supports_gpt_35_turbo = True
     supports_message_history = True
+    supports_gpt_4 = True
+    default_model = 'gpt-4o-mini'
 
     @classmethod
     async def create_async_generator(
         cls,
         model: str,
         messages: Messages,
-        proxy: str = None,
-        connector: BaseConnector = None,
-        **kwargs
-    ) -> AsyncResult:
+        proxy: Optional[str] = None,
+        connector: Optional[BaseConnector] = None,
+        **kwargs: Any
+    ) -> AsyncGenerator[Dict[str, Union[str, int, float, List[Dict[str, Any]], None]], None]:
         if not model:
-            model = "gpt-3.5-turbo"
+            model = "gpt-4o-mini"
+
         headers = {
             "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:122.0) Gecko/20100101 Firefox/122.0",
             "Accept": "text/event-stream",
             "Accept-Language": "de,en-US;q=0.7,en;q=0.3",
             "Accept-Encoding": "gzip, deflate, br",
-            "Referer": f"{cls.url}/chat",
+            "Referer": f"{cls.url}",
             "Flag-Real-Time-Data": "false",
             "Visitor-ID": get_random_string(20),
-            "Origin": cls.url,
+            "Origin": "https://koala.sh",
             "Alt-Used": "koala.sh",
             "Sec-Fetch-Dest": "empty",
             "Sec-Fetch-Mode": "cors",
             "Sec-Fetch-Site": "same-origin",
             "TE": "trailers",
         }
+
         async with ClientSession(headers=headers, connector=get_connector(connector, proxy)) as session:
-            input = messages[-1]["content"]
-            system_messages = [message["content"] for message in messages if message["role"] == "system"]
+            input_text = messages[-1]["content"]
+            system_messages = " ".join(
+                message["content"] for message in messages if message["role"] == "system"
+            )
             if system_messages:
-                input += " ".join(system_messages)
+                input_text += f" {system_messages}"
+
             data = {
-                "input": input,
+                "input": input_text,
                 "inputHistory": [
                     message["content"]
                     for message in messages[:-1]
@@ -59,8 +67,14 @@ class Koala(AsyncGeneratorProvider):
                 ],
                 "model": model,
             }
-            async with session.post(f"{cls.url}/api/gpt/", json=data, proxy=proxy) as response:
+
+            async with session.post(f"{cls.api_endpoint}", json=data, proxy=proxy) as response:
                 await raise_for_status(response)
-                async for chunk in response.content:
-                    if chunk.startswith(b"data: "):
-                        yield json.loads(chunk[6:])
\ No newline at end of file
+                async for chunk in cls._parse_event_stream(response):
+                    yield chunk
+
+    @staticmethod
+    async def _parse_event_stream(response: ClientResponse) -> AsyncGenerator[Dict[str, Any], None]:
+        async for chunk in response.content:
+            if chunk.startswith(b"data: "):
+                yield json.loads(chunk[6:])