4 files changed, 85 insertions, 39 deletions

diff --git a/g4f/Provider/base_provider.py b/g4f/Provider/base_provider.py
index 8f368747..667f6964 100644
--- a/g4f/Provider/base_provider.py
+++ b/g4f/Provider/base_provider.py
@@ -1,3 +1,4 @@
 from ..providers.base_provider import *
 from ..providers.types import FinishReason, Streaming
+from ..providers.conversation import BaseConversation
 from .helper import get_cookies, format_prompt
\ No newline at end of file
diff --git a/g4f/Provider/needs_auth/Gemini.py b/g4f/Provider/needs_auth/Gemini.py
index 71cc8d81..eddd25fa 100644
--- a/g4f/Provider/needs_auth/Gemini.py
+++ b/g4f/Provider/needs_auth/Gemini.py
@@ -18,11 +18,11 @@ except ImportError:
 
 from ... import debug
 from ...typing import Messages, Cookies, ImageType, AsyncResult, AsyncIterator
-from ..base_provider import AsyncGeneratorProvider
+from ..base_provider import AsyncGeneratorProvider, BaseConversation
 from ..helper import format_prompt, get_cookies
 from ...requests.raise_for_status import raise_for_status
 from ...errors import MissingAuthError, MissingRequirementsError
-from ...image import to_bytes, ImageResponse, ImageDataResponse
+from ...image import ImageResponse, to_bytes
 from ...webdriver import get_browser, get_driver_cookies
 
 REQUEST_HEADERS = {
@@ -32,7 +32,7 @@ REQUEST_HEADERS = {
     'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36',
     'x-same-domain': '1',
 }
-REQUEST_BL_PARAM = "boq_assistant-bard-web-server_20240421.18_p0"
+REQUEST_BL_PARAM = "boq_assistant-bard-web-server_20240519.16_p0"
 REQUEST_URL = "https://gemini.google.com/_/BardChatUi/data/assistant.lamda.BardFrontendService/StreamGenerate"
 UPLOAD_IMAGE_URL = "https://content-push.googleapis.com/upload/"
 UPLOAD_IMAGE_HEADERS = {
@@ -57,6 +57,8 @@ class Gemini(AsyncGeneratorProvider):
     image_models = ["gemini"]
     default_vision_model = "gemini"
     _cookies: Cookies = None
+    _snlm0e: str = None
+    _sid: str = None
 
     @classmethod
     async def nodriver_login(cls, proxy: str = None) -> AsyncIterator[str]:
@@ -117,42 +119,40 @@ class Gemini(AsyncGeneratorProvider):
         model: str,
         messages: Messages,
         proxy: str = None,
-        api_key: str = None,
         cookies: Cookies = None,
         connector: BaseConnector = None,
         image: ImageType = None,
         image_name: str = None,
         response_format: str = None,
+        return_conversation: bool = False,
+        conversation: Conversation = None,
+        language: str = "en",
         **kwargs
     ) -> AsyncResult:
-        prompt = format_prompt(messages)
-        if api_key is not None:
-            if cookies is None:
-                cookies = {}
-            cookies["__Secure-1PSID"] = api_key
+        prompt = format_prompt(messages) if conversation is None else messages[-1]["content"]
         cls._cookies = cookies or cls._cookies or get_cookies(".google.com", False, True)
         base_connector = get_connector(connector, proxy)
         async with ClientSession(
             headers=REQUEST_HEADERS,
             connector=base_connector
         ) as session:
-            snlm0e  = await cls.fetch_snlm0e(session, cls._cookies) if cls._cookies else None
-            if not snlm0e:
+            if not cls._snlm0e:
+                await cls.fetch_snlm0e(session, cls._cookies) if cls._cookies else None
+            if not cls._snlm0e:
                 async for chunk in cls.nodriver_login(proxy):
                     yield chunk
                 if cls._cookies is None:
                     async for chunk in cls.webdriver_login(proxy):
                         yield chunk
-
-            if not snlm0e:
+            if not cls._snlm0e:
                 if cls._cookies is None or "__Secure-1PSID" not in cls._cookies:
                     raise MissingAuthError('Missing "__Secure-1PSID" cookie')
-                snlm0e = await cls.fetch_snlm0e(session, cls._cookies)
-            if not snlm0e:
+                await cls.fetch_snlm0e(session, cls._cookies)
+            if not cls._snlm0e:
                 raise RuntimeError("Invalid cookies. SNlM0e not found")
 
             image_url = await cls.upload_image(base_connector, to_bytes(image), image_name) if image else None
-        
+
             async with ClientSession(
                 cookies=cls._cookies,
                 headers=REQUEST_HEADERS,
@@ -160,13 +160,17 @@ class Gemini(AsyncGeneratorProvider):
             ) as client:
                 params = {
                     'bl': REQUEST_BL_PARAM,
+                    'hl': language,
                     '_reqid': random.randint(1111, 9999),
-                    'rt': 'c'
+                    'rt': 'c',
+                    "f.sid": cls._sid,
                 }
                 data = {
-                    'at': snlm0e,
+                    'at': cls._snlm0e,
                     'f.req': json.dumps([None, json.dumps(cls.build_request(
                         prompt,
+                        language=language,
+                        conversation=conversation,
                         image_url=image_url,
                         image_name=image_name
                     ))])
@@ -177,19 +181,33 @@ class Gemini(AsyncGeneratorProvider):
                     params=params,
                 ) as response:
                     await raise_for_status(response)
-                    response = await response.text()
-                    response_part = json.loads(json.loads(response.splitlines()[-5])[0][2])
-                    if response_part[4] is None:
-                        response_part = json.loads(json.loads(response.splitlines()[-7])[0][2])
-
-                    content = response_part[4][0][1][0]
-                    image_prompt = None
-                    match = re.search(r'\[Imagen of (.*?)\]', content)
-                    if match:
-                        image_prompt = match.group(1)
-                        content = content.replace(match.group(0), '')
-
-                    yield content
+                    image_prompt = response_part = None
+                    last_content_len = 0
+                    async for line in response.content:
+                        try:
+                            try:
+                                line = json.loads(line)
+                            except ValueError:
+                                continue
+                            if not isinstance(line, list):
+                                continue
+                            if len(line[0]) < 3 or not line[0][2]:
+                                continue
+                            response_part = json.loads(line[0][2])
+                            if not response_part[4]:
+                                continue
+                            if return_conversation:
+                                yield Conversation(response_part[1][0], response_part[1][1], response_part[4][0][0])
+                            content = response_part[4][0][1][0]
+                        except (ValueError, KeyError, TypeError, IndexError) as e:
+                            print(f"{cls.__name__}:{e.__class__.__name__}:{e}")
+                            continue
+                        match = re.search(r'\[Imagen of (.*?)\]', content)
+                        if match:
+                            image_prompt = match.group(1)
+                            content = content.replace(match.group(0), '')
+                        yield content[last_content_len:]
+                        last_content_len = len(content)
                     if image_prompt:
                         images = [image[0][3][3] for image in response_part[4][0][12][7][0]]
                         if response_format == "b64_json":
@@ -208,9 +226,8 @@ class Gemini(AsyncGeneratorProvider):
 
     def build_request(
         prompt: str,
-        conversation_id: str = "",
-        response_id: str = "",
-        choice_id: str = "",
+        language: str,
+        conversation: Conversation = None,
         image_url: str = None,
         image_name: str = None,
         tools: list[list[str]] = []
@@ -218,8 +235,15 @@ class Gemini(AsyncGeneratorProvider):
         image_list = [[[image_url, 1], image_name]] if image_url else []
         return [
             [prompt, 0, None, image_list, None, None, 0],
-            ["en"],
-            [conversation_id, response_id, choice_id, None, None, []],
+            [language],
+            [
+                None if conversation is None else conversation.conversation_id,
+                None if conversation is None else conversation.response_id,
+                None if conversation is None else conversation.choice_id,
+                None,
+                None,
+                []
+            ],
             None,
             None,
             None,
@@ -265,7 +289,20 @@ class Gemini(AsyncGeneratorProvider):
     async def fetch_snlm0e(cls, session: ClientSession, cookies: Cookies):
         async with session.get(cls.url, cookies=cookies) as response:
             await raise_for_status(response)
-            text = await response.text()
-        match = re.search(r'SNlM0e\":\"(.*?)\"', text)
+            response_text = await response.text()
+        match = re.search(r'SNlM0e\":\"(.*?)\"', response_text)
         if match:
-            return match.group(1)
\ No newline at end of file
+            cls._snlm0e = match.group(1)
+        sid_match = re.search(r'"FdrFJe":"([\d-]+)"', response_text)
+        if sid_match:
+            cls._sid = sid_match.group(1)
+
+class Conversation(BaseConversation):
+    def __init__(self,
+        conversation_id: str = "",
+        response_id: str = "",
+        choice_id: str = ""
+    ) -> None:
+        self.conversation_id = conversation_id
+        self.response_id = response_id
+        self.choice_id = choice_id
\ No newline at end of file
diff --git a/g4f/client/async_client.py b/g4f/client/async_client.py
index dbfa6b70..2fe4640b 100644
--- a/g4f/client/async_client.py
+++ b/g4f/client/async_client.py
@@ -18,6 +18,7 @@ from ..Provider import ProviderUtils
 from ..typing import Union, Messages, AsyncIterator, ImageType
 from ..errors import NoImageResponseError, ProviderNotFoundError
 from ..requests.aiohttp import get_connector
+from ..providers.conversation import BaseConversation
 from ..image import ImageResponse as ImageProviderResponse, ImageDataResponse
 
 try:
@@ -42,6 +43,9 @@ async def iter_response(
         if isinstance(chunk, FinishReason):
             finish_reason = chunk.reason
             break
+        elif isinstance(chunk, BaseConversation):
+            yield chunk
+            continue
         content += str(chunk)
         count += 1
         if max_tokens is not None and count >= max_tokens:
diff --git a/g4f/client/client.py b/g4f/client/client.py
index acf53c70..63bae4fe 100644
--- a/g4f/client/client.py
+++ b/g4f/client/client.py
@@ -6,6 +6,7 @@ import string
 
 from ..typing import Union, Iterator, Messages, ImageType
 from ..providers.types import BaseProvider, ProviderType, FinishReason
+from ..providers.conversation import BaseConversation
 from ..image import ImageResponse as ImageProviderResponse
 from ..errors import NoImageResponseError
 from .stubs import ChatCompletion, ChatCompletionChunk, Image, ImagesResponse
@@ -29,6 +30,9 @@ def iter_response(
         if isinstance(chunk, FinishReason):
             finish_reason = chunk.reason
             break
+        elif isinstance(chunk, BaseConversation):
+            yield chunk
+            continue
         content += str(chunk)
         if max_tokens is not None and idx + 1 >= max_tokens:
             finish_reason = "length"