1 files changed, 60 insertions, 37 deletions

diff --git a/g4f/Provider/nexra/NexraChatGPT.py b/g4f/Provider/nexra/NexraChatGPT.py
index 8ed83f98..f9f49139 100644
--- a/g4f/Provider/nexra/NexraChatGPT.py
+++ b/g4f/Provider/nexra/NexraChatGPT.py
@@ -1,22 +1,60 @@
 from __future__ import annotations
+
 from aiohttp import ClientSession
+import json
+
 from ...typing import AsyncResult, Messages
 from ..base_provider import AsyncGeneratorProvider, ProviderModelMixin
 from ..helper import format_prompt
-import json
+
 
 class NexraChatGPT(AsyncGeneratorProvider, ProviderModelMixin):
     label = "Nexra ChatGPT"
+    url = "https://nexra.aryahcr.cc/documentation/chatgpt/en"
     api_endpoint = "https://nexra.aryahcr.cc/api/chat/gpt"
+    working = True
+    supports_gpt_35_turbo = True
+    supports_gpt_4 = True
+    supports_stream = False
+    
+    default_model = 'gpt-3.5-turbo'
+    models = ['gpt-4', 'gpt-4-0613', 'gpt-4-0314', 'gpt-4-32k-0314', 'gpt-3.5-turbo', 'gpt-3.5-turbo-16k', 'gpt-3.5-turbo-0613', 'gpt-3.5-turbo-16k-0613', 'gpt-3.5-turbo-0301', 'text-davinci-003', 'text-davinci-002', 'code-davinci-002', 'gpt-3', 'text-curie-001', 'text-babbage-001', 'text-ada-001', 'davinci', 'curie', 'babbage', 'ada', 'babbage-002', 'davinci-002']
+    
+    model_aliases = {
+        "gpt-4": "gpt-4-0613",
+        "gpt-4": "gpt-4-32k",
+        "gpt-4": "gpt-4-0314",
+        "gpt-4": "gpt-4-32k-0314",
+        
+        "gpt-3.5-turbo": "gpt-3.5-turbo-16k",
+        "gpt-3.5-turbo": "gpt-3.5-turbo-0613",
+        "gpt-3.5-turbo": "gpt-3.5-turbo-16k-0613",
+        "gpt-3.5-turbo": "gpt-3.5-turbo-0301",
+        
+        "gpt-3": "text-davinci-003",
+        "gpt-3": "text-davinci-002",
+        "gpt-3": "code-davinci-002",
+        "gpt-3": "text-curie-001",
+        "gpt-3": "text-babbage-001",
+        "gpt-3": "text-ada-001",
+        "gpt-3": "text-ada-001",
+        "gpt-3": "davinci",
+        "gpt-3": "curie",
+        "gpt-3": "babbage",
+        "gpt-3": "ada",
+        "gpt-3": "babbage-002",
+        "gpt-3": "davinci-002",
+    }
 
-    models = [
-        'gpt-4', 'gpt-4-0613', 'gpt-4-32k', 'gpt-4-0314', 'gpt-4-32k-0314',
-        'gpt-3.5-turbo', 'gpt-3.5-turbo-16k', 'gpt-3.5-turbo-0613', 
-        'gpt-3.5-turbo-16k-0613', 'gpt-3.5-turbo-0301',
-        'gpt-3', 'text-davinci-003', 'text-davinci-002', 'code-davinci-002',
-        'text-curie-001', 'text-babbage-001', 'text-ada-001',
-        'davinci', 'curie', 'babbage', 'ada', 'babbage-002', 'davinci-002',
-    ]
+
+    @classmethod
+    def get_model(cls, model: str) -> str:
+        if model in cls.models:
+            return model
+        elif model in cls.model_aliases:
+            return cls.model_aliases[model]
+        else:
+            return cls.default_model
 
     @classmethod
     async def create_async_generator(
@@ -26,41 +64,26 @@ class NexraChatGPT(AsyncGeneratorProvider, ProviderModelMixin):
         proxy: str = None,
         **kwargs
     ) -> AsyncResult:
+        model = cls.get_model(model)
+        
         headers = {
-            "Accept": "application/json",
-            "Content-Type": "application/json",
-            "Referer": f"{cls.url}/chat",
+            "Content-Type": "application/json"
         }
-
         async with ClientSession(headers=headers) as session:
             prompt = format_prompt(messages)
             data = {
+                "messages": messages,
                 "prompt": prompt,
                 "model": model,
-                "markdown": False,
-                "messages": messages or [],
+                "markdown": False
             }
-
             async with session.post(cls.api_endpoint, json=data, proxy=proxy) as response:
                 response.raise_for_status()
-
-                content_type = response.headers.get('Content-Type', '')
-                if 'application/json' in content_type:
-                    result = await response.json()
-                    if result.get("status"):
-                        yield result.get("gpt", "")
-                    else:
-                        raise Exception(f"Error in response: {result.get('message', 'Unknown error')}")
-                elif 'text/plain' in content_type:
-                    text = await response.text()
-                    try:
-                        result = json.loads(text)
-                        if result.get("status"):
-                            yield result.get("gpt", "")
-                        else:
-                            raise Exception(f"Error in response: {result.get('message', 'Unknown error')}")
-                    except json.JSONDecodeError:
-                        yield text  # If not JSON, return text
-                else:
-                    raise Exception(f"Unexpected response type: {content_type}. Response text: {await response.text()}")
-
+                response_text = await response.text()
+                try:
+                    if response_text.startswith('_'):
+                        response_text = response_text[1:]
+                    response_data = json.loads(response_text)
+                    yield response_data.get('gpt', '')
+                except json.JSONDecodeError:
+                    yield ''