1 files changed, 172 insertions, 0 deletions

diff --git a/g4f/gui/server/api.py b/g4f/gui/server/api.py
new file mode 100644
index 00000000..df7b487d
--- /dev/null
+++ b/g4f/gui/server/api.py
@@ -0,0 +1,172 @@
+import logging
+import json
+from typing import Iterator
+
+try:
+    import webview
+except ImportError:
+    ...
+
+from g4f import version, models
+from g4f import get_last_provider, ChatCompletion
+from g4f.errors import VersionNotFoundError
+from g4f.Provider import ProviderType, __providers__, __map__
+from g4f.providers.base_provider import ProviderModelMixin
+from g4f.Provider.bing.create_images import patch_provider
+
+class Api():    
+    def get_models(self) -> list[str]:
+        """
+        Return a list of all models.
+
+        Fetches and returns a list of all available models in the system.
+
+        Returns:
+            List[str]: A list of model names.
+        """
+        return models._all_models
+
+    def get_provider_models(self, provider: str) -> list[dict]:
+        if provider in __map__:
+            provider: ProviderType = __map__[provider]
+            if issubclass(provider, ProviderModelMixin):
+                return [{"model": model, "default": model == provider.default_model} for model in provider.get_models()]
+            elif provider.supports_gpt_35_turbo or provider.supports_gpt_4:
+                return [
+                    *([{"model": "gpt-4", "default": not provider.supports_gpt_4}] if provider.supports_gpt_4 else []),
+                    *([{"model": "gpt-3.5-turbo", "default": not provider.supports_gpt_4}] if provider.supports_gpt_35_turbo else [])
+                ]
+            else:
+                return [];
+
+    def get_providers(self) -> list[str]:
+        """
+        Return a list of all working providers.
+        """
+        return [provider.__name__ for provider in __providers__ if provider.working]
+
+    def get_version(self):
+        """
+        Returns the current and latest version of the application.
+
+        Returns:
+            dict: A dictionary containing the current and latest version.
+        """
+        try:
+            current_version = version.utils.current_version
+        except VersionNotFoundError:
+            current_version = None
+        return {
+            "version": current_version,
+            "latest_version": version.utils.latest_version,
+        }
+
+    def generate_title(self):
+        """
+        Generates and returns a title based on the request data.
+
+        Returns:
+            dict: A dictionary with the generated title.
+        """
+        return {'title': ''}
+
+    def get_conversation(self, options: dict, **kwargs) -> Iterator:
+        window = webview.active_window()
+        for message in self._create_response_stream(
+            self._prepare_conversation_kwargs(options, kwargs)
+        ):
+            window.evaluate_js(f"this.add_message_chunk({json.dumps(message)})")
+
+    def _prepare_conversation_kwargs(self, json_data: dict, kwargs: dict):
+        """
+        Prepares arguments for chat completion based on the request data.
+
+        Reads the request and prepares the necessary arguments for handling 
+        a chat completion request.
+
+        Returns:
+            dict: Arguments prepared for chat completion.
+        """ 
+        provider = json_data.get('provider', None)
+        if "image" in kwargs and provider is None:
+            provider = "Bing"
+        if provider == 'OpenaiChat':
+            kwargs['auto_continue'] = True
+
+        messages = json_data['messages']
+        if json_data.get('web_search'):
+            if provider == "Bing":
+                kwargs['web_search'] = True
+            else:
+                from .internet import get_search_message
+                messages[-1]["content"] = get_search_message(messages[-1]["content"])
+
+        model = json_data.get('model')
+        model = model if model else models.default
+        patch = patch_provider if json_data.get('patch_provider') else None
+
+        return {
+            "model": model,
+            "provider": provider,
+            "messages": messages,
+            "stream": True,
+            "ignore_stream": True,
+            "patch_provider": patch,
+            **kwargs
+        }
+
+    def _create_response_stream(self, kwargs) -> Iterator:
+        """
+        Creates and returns a streaming response for the conversation.
+
+        Args:
+            kwargs (dict): Arguments for creating the chat completion.
+
+        Yields:
+            str: JSON formatted response chunks for the stream.
+
+        Raises:
+            Exception: If an error occurs during the streaming process.
+        """
+        try:
+            first = True
+            for chunk in ChatCompletion.create(**kwargs):
+                if first:
+                    first = False
+                    yield self._format_json('provider', get_last_provider(True))
+                if isinstance(chunk, Exception):
+                    logging.exception(chunk)
+                    yield self._format_json('message', get_error_message(chunk))
+                else:
+                    yield self._format_json('content', chunk)
+        except Exception as e:
+            logging.exception(e)
+            yield self._format_json('error', get_error_message(e))
+
+    def _format_json(self, response_type: str, content):
+        """
+        Formats and returns a JSON response.
+
+        Args:
+            response_type (str): The type of the response.
+            content: The content to be included in the response.
+
+        Returns:
+            str: A JSON formatted string.
+        """
+        return {
+            'type': response_type,
+            response_type: content
+        }
+    
+def get_error_message(exception: Exception) -> str:
+    """
+    Generates a formatted error message from an exception.
+
+    Args:
+        exception (Exception): The exception to format.
+
+    Returns:
+        str: A formatted error message string.
+    """
+    return f"{get_last_provider().__name__}: {type(exception).__name__}: {exception}"
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