# Copyright (c) 2023 - 2025, AG2ai, Inc., AG2ai open-source projects maintainers and core contributors
#
# SPDX-License-Identifier: Apache-2.0
#
# Portions derived from  https://github.com/microsoft/autogen are under the MIT License.
# SPDX-License-Identifier: MIT
from __future__ import annotations

import json
import logging
import os
import threading
import uuid
from collections.abc import Callable
from typing import TYPE_CHECKING, Any, TypeVar

from ..doc_utils import export_module
from .base_logger import BaseLogger, LLMConfig
from .logger_utils import get_current_ts, to_dict

if TYPE_CHECKING:
    from openai import AzureOpenAI, OpenAI
    from openai.types.chat import ChatCompletion

    from .. import Agent, ConversableAgent, OpenAIWrapper
    from ..oai.anthropic import AnthropicClient
    from ..oai.bedrock import BedrockClient
    from ..oai.cerebras import CerebrasClient
    from ..oai.cohere import CohereClient
    from ..oai.gemini import GeminiClient
    from ..oai.groq import GroqClient
    from ..oai.mistral import MistralAIClient
    from ..oai.ollama import OllamaClient
    from ..oai.together import TogetherClient

logger = logging.getLogger(__name__)

F = TypeVar("F", bound=Callable[..., Any])

__all__ = ("FileLogger",)


def safe_serialize(obj: Any) -> str:
    def default(o: Any) -> str:
        if hasattr(o, "to_json"):
            return str(o.to_json())
        else:
            return f"<<non-serializable: {type(o).__qualname__}>>"

    return json.dumps(obj, default=default)


@export_module("autogen.logger")
class FileLogger(BaseLogger):
    def __init__(self, config: dict[str, Any]):
        self.config = config
        self.session_id = str(uuid.uuid4())

        curr_dir = os.getcwd()
        self.log_dir = os.path.join(curr_dir, "autogen_logs")
        os.makedirs(self.log_dir, exist_ok=True)

        self.log_file = os.path.join(self.log_dir, self.config.get("filename", "runtime.log"))
        try:
            with open(self.log_file, "a"):
                pass
        except Exception as e:
            logger.error(f"[file_logger] Failed to create logging file: {e}")

        self.logger = logging.getLogger(__name__)
        self.logger.setLevel(logging.INFO)
        file_handler = logging.FileHandler(self.log_file)
        self.logger.addHandler(file_handler)

    def start(self) -> str:
        """Start the logger and return the session_id."""
        try:
            self.logger.info(f"Started new session with Session ID: {self.session_id}")
        except Exception as e:
            logger.error(f"[file_logger] Failed to create logging file: {e}")
        finally:
            return self.session_id

    def log_chat_completion(
        self,
        invocation_id: uuid.UUID,
        client_id: int,
        wrapper_id: int,
        source: str | Agent,
        request: dict[str, float | str | list[dict[str, str]]],
        response: str | ChatCompletion,
        is_cached: int,
        cost: float,
        start_time: str,
    ) -> None:
        """Log a chat completion."""
        thread_id = threading.get_ident()
        source_name = (
            source
            if isinstance(source, str)
            else source.name
            if hasattr(source, "name") and source.name is not None
            else ""
        )
        try:
            log_data = json.dumps({
                "invocation_id": str(invocation_id),
                "client_id": client_id,
                "wrapper_id": wrapper_id,
                "request": to_dict(request),
                "response": str(response),
                "is_cached": is_cached,
                "cost": cost,
                "start_time": start_time,
                "end_time": get_current_ts(),
                "thread_id": thread_id,
                "source_name": source_name,
            })

            self.logger.info(log_data)
        except Exception as e:
            self.logger.error(f"[file_logger] Failed to log chat completion: {e}")

    def log_new_agent(self, agent: ConversableAgent, init_args: dict[str, Any] = {}) -> None:
        """Log a new agent instance."""
        thread_id = threading.get_ident()

        try:
            log_data = json.dumps({
                "id": id(agent),
                "agent_name": agent.name if hasattr(agent, "name") and agent.name is not None else "",
                "wrapper_id": to_dict(
                    agent.client.wrapper_id if hasattr(agent, "client") and agent.client is not None else ""
                ),
                "session_id": self.session_id,
                "current_time": get_current_ts(),
                "agent_type": type(agent).__name__,
                "args": to_dict(init_args),
                "thread_id": thread_id,
            })
            self.logger.info(log_data)
        except Exception as e:
            self.logger.error(f"[file_logger] Failed to log new agent: {e}")

    def log_event(self, source: str | Agent, name: str, **kwargs: dict[str, Any]) -> None:
        """Log an event from an agent or a string source."""
        from .. import Agent

        # This takes an object o as input and returns a string. If the object o cannot be serialized, instead of raising an error,
        # it returns a string indicating that the object is non-serializable, along with its type's qualified name obtained using __qualname__.
        json_args = json.dumps(kwargs, default=lambda o: f"<<non-serializable: {type(o).__qualname__}>>")
        thread_id = threading.get_ident()

        if isinstance(source, Agent):
            try:
                log_data = json.dumps({
                    "source_id": id(source),
                    "source_name": str(source.name) if hasattr(source, "name") else source,
                    "event_name": name,
                    "agent_module": source.__module__,
                    "agent_class": source.__class__.__name__,
                    "json_state": json_args,
                    "timestamp": get_current_ts(),
                    "thread_id": thread_id,
                })
                self.logger.info(log_data)
            except Exception as e:
                self.logger.error(f"[file_logger] Failed to log event {e}")
        else:
            try:
                log_data = json.dumps({
                    "source_id": id(source),
                    "source_name": str(source.name) if hasattr(source, "name") else source,
                    "event_name": name,
                    "json_state": json_args,
                    "timestamp": get_current_ts(),
                    "thread_id": thread_id,
                })
                self.logger.info(log_data)
            except Exception as e:
                self.logger.error(f"[file_logger] Failed to log event {e}")

    def log_new_wrapper(self, wrapper: OpenAIWrapper, init_args: dict[str, LLMConfig | list[LLMConfig]] = {}) -> None:
        """Log a new wrapper instance."""
        thread_id = threading.get_ident()

        try:
            log_data = json.dumps({
                "wrapper_id": id(wrapper),
                "session_id": self.session_id,
                "json_state": json.dumps(init_args),
                "timestamp": get_current_ts(),
                "thread_id": thread_id,
            })
            self.logger.info(log_data)
        except Exception as e:
            self.logger.error(f"[file_logger] Failed to log event {e}")

    def log_new_client(
        self,
        client: (
            AzureOpenAI
            | OpenAI
            | CerebrasClient
            | GeminiClient
            | AnthropicClient
            | MistralAIClient
            | TogetherClient
            | GroqClient
            | CohereClient
            | OllamaClient
            | BedrockClient
        ),
        wrapper: OpenAIWrapper,
        init_args: dict[str, Any],
    ) -> None:
        """Log a new client instance."""
        thread_id = threading.get_ident()

        try:
            log_data = json.dumps({
                "client_id": id(client),
                "wrapper_id": id(wrapper),
                "session_id": self.session_id,
                "class": type(client).__name__,
                "json_state": json.dumps(init_args),
                "timestamp": get_current_ts(),
                "thread_id": thread_id,
            })
            self.logger.info(log_data)
        except Exception as e:
            self.logger.error(f"[file_logger] Failed to log event {e}")

    def log_function_use(self, source: str | Agent, function: F, args: dict[str, Any], returns: Any) -> None:
        """Log a registered function(can be a tool) use from an agent or a string source."""
        thread_id = threading.get_ident()

        try:
            log_data = json.dumps({
                "source_id": id(source),
                "source_name": str(source.name) if hasattr(source, "name") else source,
                "agent_module": source.__module__,
                "agent_class": source.__class__.__name__,
                "timestamp": get_current_ts(),
                "thread_id": thread_id,
                "input_args": safe_serialize(args),
                "returns": safe_serialize(returns),
            })
            self.logger.info(log_data)
        except Exception as e:
            self.logger.error(f"[file_logger] Failed to log event {e}")

    def get_connection(self) -> None:
        """Method is intentionally left blank because there is no specific connection needed for the FileLogger."""
        pass

    def stop(self) -> None:
        """Close the file handler and remove it from the logger."""
        for handler in self.logger.handlers:
            if isinstance(handler, logging.FileHandler):
                handler.close()
                self.logger.removeHandler(handler)
