From f07173de4fe64bdccfdb9adff34ae0abbfe70a4d Mon Sep 17 00:00:00 2001
From: vlad <master.redstone@yandex.ru>
Date: Thu, 14 Mar 2024 01:29:49 +0300
Subject: GigaChat models add

---
 g4f/Provider/GigaChat.py | 97 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 g4f/Provider/GigaChat.py

(limited to 'g4f/Provider/GigaChat.py')

diff --git a/g4f/Provider/GigaChat.py b/g4f/Provider/GigaChat.py
new file mode 100644
index 00000000..699353b1
--- /dev/null
+++ b/g4f/Provider/GigaChat.py
@@ -0,0 +1,97 @@
+from __future__ import annotations
+
+import base64
+import os
+import ssl
+import time
+import uuid
+
+import json
+from aiohttp import ClientSession, BaseConnector, TCPConnector
+from g4f.requests import raise_for_status
+
+from ..typing import AsyncResult, Messages, ImageType
+from .base_provider import AsyncGeneratorProvider, ProviderModelMixin
+from ..image import to_bytes, is_accepted_format
+from ..errors import MissingAuthError
+from .helper import get_connector
+
+access_token = ''
+token_expires_at = 0
+
+ssl_ctx = ssl.create_default_context(
+    cafile=os.path.dirname(__file__) + '/gigachat_crt/russian_trusted_root_ca_pem.crt')
+
+
+class GigaChat(AsyncGeneratorProvider, ProviderModelMixin):
+    url = "https://developers.sber.ru/gigachat"
+    working = True
+    supports_message_history = True
+    supports_system_message = True
+    supports_stream = True
+
+    needs_auth = True
+    default_model = "GigaChat:latest"
+    models = ["GigaChat:latest", "GigaChat-Plus", "GigaChat-Pro"]
+
+    @classmethod
+    async def create_async_generator(
+            cls,
+            model: str,
+            messages: Messages,
+            stream: bool = True,
+            proxy: str = None,
+            api_key: str = None,
+            scope: str = "GIGACHAT_API_PERS",
+            update_interval: float = 0,
+            **kwargs
+    ) -> AsyncResult:
+        global access_token, token_expires_at
+        model = cls.get_model(model)
+
+        if not api_key:
+            raise MissingAuthError('Missing "api_key"')
+
+        connector = TCPConnector(ssl_context=ssl_ctx)
+
+        async with ClientSession(connector=get_connector(connector, proxy)) as session:
+            if token_expires_at - int(time.time() * 1000) < 60000:
+                async with session.post(url="https://ngw.devices.sberbank.ru:9443/api/v2/oauth",
+                                        headers={"Authorization": f"Bearer {api_key}",
+                                                 "RqUID": str(uuid.uuid4()),
+                                                 "Content-Type": "application/x-www-form-urlencoded"},
+                                        data={"scope": scope}) as response:
+                    await raise_for_status(response)
+                    data = await response.json()
+                access_token = data['access_token']
+                token_expires_at = data['expires_at']
+
+            async with session.post(url="https://gigachat.devices.sberbank.ru/api/v1/chat/completions",
+                                    headers={"Authorization": f"Bearer {access_token}"},
+                                    json={
+                                        "model": model,
+                                        "messages": messages,
+                                        "stream": stream,
+                                        "update_interval": update_interval,
+                                        **kwargs
+                                    }) as response:
+                await raise_for_status(response)
+
+                async for line in response.content:
+                    if not stream:
+                        yield json.loads(line.decode("utf-8"))['choices'][0]['message']['content']
+                        return
+
+                    if line and line.startswith(b"data:"):
+                        line = line[6:-1]  # remove "data: " prefix and "\n" suffix
+                        if line.strip() == b"[DONE]":
+                            return
+                        else:
+                            msg = json.loads(line.decode("utf-8"))['choices'][0]
+                            content = msg['delta']['content']
+
+                            if content:
+                                yield content
+
+                            if 'finish_reason' in msg:
+                                return
-- 
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