1 files changed, 109 insertions, 0 deletions
diff --git a/g4f/Provider/DDG.py b/g4f/Provider/DDG.py
new file mode 100644
index 00000000..1eae7b39
--- /dev/null
+++ b/g4f/Provider/DDG.py
@@ -0,0 +1,109 @@
+from __future__ import annotations
+
+import json
+import aiohttp
+from aiohttp import ClientSession
+
+from ..typing import AsyncResult, Messages
+from .base_provider import AsyncGeneratorProvider, ProviderModelMixin
+from .helper import format_prompt
+
+
+class DDG(AsyncGeneratorProvider, ProviderModelMixin):
+    url = "https://duckduckgo.com"
+    api_endpoint = "https://duckduckgo.com/duckchat/v1/chat"
+    working = True
+    supports_gpt_4 = True
+    supports_stream = True
+    supports_system_message = True
+    supports_message_history = True
+
+    default_model = "gpt-4o-mini"
+    models = [
+        "gpt-4o-mini",
+        "claude-3-haiku-20240307",
+        "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
+        "mistralai/Mixtral-8x7B-Instruct-v0.1"
+    ]
+    model_aliases = {
+        "claude-3-haiku": "claude-3-haiku-20240307",
+        "llama-3.1-70b": "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
+        "mixtral-8x7b": "mistralai/Mixtral-8x7B-Instruct-v0.1"
+    }
+
+    @classmethod
+    def get_model(cls, model: str) -> str:
+        return cls.model_aliases.get(model, model) if model in cls.model_aliases else cls.default_model
+
+    @classmethod
+    async def get_vqd(cls):
+        status_url = "https://duckduckgo.com/duckchat/v1/status"
+        
+        headers = {
+            'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36',
+            'Accept': 'text/event-stream',
+            'x-vqd-accept': '1'
+        }
+
+        async with aiohttp.ClientSession() as session:
+            try:
+                async with session.get(status_url, headers=headers) as response:
+                    if response.status == 200:
+                        return response.headers.get("x-vqd-4")
+                    else:
+                        print(f"Error: Status code {response.status}")
+                        return None
+            except Exception as e:
+                print(f"Error getting VQD: {e}")
+                return None
+
+    @classmethod
+    async def create_async_generator(
+        cls,
+        model: str,
+        messages: Messages,
+        conversation: dict = None,
+        proxy: str = None,
+        **kwargs
+    ) -> AsyncResult:
+        model = cls.get_model(model)
+
+        headers = {
+            'accept': 'text/event-stream',
+            'content-type': 'application/json',
+            'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36',
+        }
+
+        vqd = conversation.get('vqd') if conversation else await cls.get_vqd()
+        if not vqd:
+            raise Exception("Failed to obtain VQD token")
+
+        headers['x-vqd-4'] = vqd
+
+        if conversation:
+            message_history = conversation.get('messages', [])
+            message_history.append({"role": "user", "content": format_prompt(messages)})
+        else:
+            message_history = [{"role": "user", "content": format_prompt(messages)}]
+
+        async with ClientSession(headers=headers) as session:
+            data = {
+                "model": model,
+                "messages": message_history
+            }
+
+            async with session.post(cls.api_endpoint, json=data, proxy=proxy) as response:
+                response.raise_for_status()
+                async for line in response.content:
+                    if line:
+                        decoded_line = line.decode('utf-8')
+                        if decoded_line.startswith('data: '):
+                            json_str = decoded_line[6:]
+                            if json_str == '[DONE]':
+                                break
+                            try:
+                                json_data = json.loads(json_str)
+                                if 'message' in json_data:
+                                    yield json_data['message']
+                            except json.JSONDecodeError:
+                                pass