"""Handles loading of plugins."""
import importlib
import json
import os
import zipfile
from pathlib import Path
from typing import List, Tuple, Optional
from urllib.parse import urlparse
from zipimport import zipimporter

import openapi_python_client
import requests
from abstract_singleton import AbstractSingleton
from openapi_python_client.cli import Config as OpenAPIConfig

from autogpt.config import Config
from autogpt.models.base_open_ai_plugin import BaseOpenAIPlugin


def inspect_zip_for_module(zip_path: str, debug: bool = False) -> Optional[str]:
    """
    Inspect a zipfile for a module.

    Args:
        zip_path (str): Path to the zipfile.
        debug (bool, optional): Enable debug logging. Defaults to False.

    Returns:
        Optional[str]: The name of the module if found, else None.
    """
    with zipfile.ZipFile(zip_path, "r") as zfile:
        for name in zfile.namelist():
            if name.endswith("__init__.py"):
                if debug:
                    print(f"Found module '{name}' in the zipfile at: {name}")
                return name
    if debug:
        print(f"Module '__init__.py' not found in the zipfile @ {zip_path}.")
    return None


def write_dict_to_json_file(data: dict, file_path: str):
    """
    Write a dictionary to a JSON file.
    Args:
        data (dict): Dictionary to write.
        file_path (str): Path to the file.
    """
    with open(file_path, 'w') as file:
        json.dump(data, file, indent=4)


def fetch_openai_plugins_manifest_and_spec(cfg: Config) -> dict:
    """
    Fetch the manifest for a list of OpenAI plugins.
        Args:
        urls (List): List of URLs to fetch.
    Returns:
        dict: per url dictionary of manifest and spec.
    """
    # TODO add directory scan
    manifests = {}
    for url in cfg.plugins_openai:
        openai_plugin_client_dir = f"{cfg.plugins_dir}/openai/{urlparse(url).netloc}"
        create_directory_if_not_exists(openai_plugin_client_dir)
        if not os.path.exists(f'{openai_plugin_client_dir}/ai-plugin.json'):
            try:
                response = requests.get(f"{url}/.well-known/ai-plugin.json")
                if response.status_code == 200:
                    manifest = response.json()
                    if manifest["schema_version"] != "v1":
                        print(f"Unsupported manifest version: {manifest['schem_version']} for {url}")
                        continue
                    if manifest["api"]["type"] != "openapi":
                        print(f"Unsupported API type: {manifest['api']['type']} for {url}")
                        continue
                    write_dict_to_json_file(manifest, f'{openai_plugin_client_dir}/ai-plugin.json')
                else:
                    print(f"Failed to fetch manifest for {url}: {response.status_code}")
            except requests.exceptions.RequestException as e:
                print(f"Error while requesting manifest from {url}: {e}")
        else:
            print(f"Manifest for {url} already exists")
            manifest = json.load(open(f'{openai_plugin_client_dir}/ai-plugin.json'))
        if not os.path.exists(f'{openai_plugin_client_dir}/openapi.json'):
            openapi_spec = openapi_python_client._get_document(url=manifest["api"]["url"], path=None, timeout=5)
            write_dict_to_json_file(openapi_spec, f'{openai_plugin_client_dir}/openapi.json')
        else:
            print(f"OpenAPI spec for {url} already exists")
            openapi_spec = json.load(open(f'{openai_plugin_client_dir}/openapi.json'))
        manifests[url] = {
            'manifest': manifest,
            'openapi_spec': openapi_spec
        }
    return manifests


def create_directory_if_not_exists(directory_path: str) -> bool:
    """
    Create a directory if it does not exist.
    Args:
        directory_path (str): Path to the directory.
    Returns:
        bool: True if the directory was created, else False.
    """
    if not os.path.exists(directory_path):
        try:
            os.makedirs(directory_path)
            print(f"Created directory: {directory_path}")
            return True
        except OSError as e:
            print(f"Error creating directory {directory_path}: {e}")
            return False
    else:
        print(f"Directory {directory_path} already exists")
        return True


def initialize_openai_plugins(manifests_specs: dict, cfg: Config, debug: bool = False) -> dict:
    """
    Initialize OpenAI plugins.
    Args:
        manifests_specs (dict): per url dictionary of manifest and spec.
        cfg (Config): Config instance including plugins config
        debug (bool, optional): Enable debug logging. Defaults to False.
    Returns:
        dict: per url dictionary of manifest, spec and client.
    """
    openai_plugins_dir = f'{cfg.plugins_dir}/openai'
    if create_directory_if_not_exists(openai_plugins_dir):
        for url, manifest_spec in manifests_specs.items():
            openai_plugin_client_dir = f'{openai_plugins_dir}/{urlparse(url).hostname}'
            _meta_option = openapi_python_client.MetaType.SETUP,
            _config = OpenAPIConfig(**{
                'project_name_override': 'client',
                'package_name_override': 'client',
            })
            prev_cwd = Path.cwd()
            os.chdir(openai_plugin_client_dir)
            Path('ai-plugin.json')
            if not os.path.exists('client'):
                client_results = openapi_python_client.create_new_client(
                    url=manifest_spec['manifest']['api']['url'],
                    path=None,
                    meta=_meta_option,
                    config=_config,
                )
                if client_results:
                    print(f"Error creating OpenAPI client: {client_results[0].header} \n"
                          f" details: {client_results[0].detail}")
                    continue
            spec = importlib.util.spec_from_file_location('client', 'client/client/client.py')
            module = importlib.util.module_from_spec(spec)
            spec.loader.exec_module(module)
            client = module.Client(base_url=url)
            os.chdir(prev_cwd)
            manifest_spec['client'] = client
    return manifests_specs


def instantiate_openai_plugin_clients(manifests_specs_clients: dict, cfg: Config, debug: bool = False) -> dict:
    """
    Instantiates BaseOpenAIPlugin instances for each OpenAI plugin.
    Args:
        manifests_specs_clients (dict): per url dictionary of manifest, spec and client.
        cfg (Config): Config instance including plugins config
        debug (bool, optional): Enable debug logging. Defaults to False.
    Returns:
          plugins (dict): per url dictionary of BaseOpenAIPlugin instances.

    """
    plugins = {}
    for url, manifest_spec_client in manifests_specs_clients.items():
        plugins[url] = BaseOpenAIPlugin(manifest_spec_client)
    return plugins


def scan_plugins(cfg: Config, debug: bool = False) -> List[Tuple[str, Path]]:
    """Scan the plugins directory for plugins and loads them.

    Args:
        cfg (Config): Config instance including plugins config
        debug (bool, optional): Enable debug logging. Defaults to False.

    Returns:
        List[Tuple[str, Path]]: List of plugins.
    """
    loaded_plugins = []
    # Generic plugins
    plugins_path_path = Path(cfg.plugins_dir)
    for plugin in plugins_path_path.glob("*.zip"):
        if module := inspect_zip_for_module(str(plugin), debug):
            plugin = Path(plugin)
            module = Path(module)
            if debug:
                print(f"Plugin: {plugin} Module: {module}")
            zipped_package = zipimporter(plugin)
            zipped_module = zipped_package.load_module(str(module.parent))
            for key in dir(zipped_module):
                if key.startswith("__"):
                    continue
                a_module = getattr(zipped_module, key)
                a_keys = dir(a_module)
                if (
                    "_abc_impl" in a_keys
                    and a_module.__name__ != "AutoGPTPluginTemplate"
                    and blacklist_whitelist_check(a_module.__name__, cfg)
                ):
                    loaded_plugins.append(a_module())
    # OpenAI plugins
    if cfg.plugins_openai:
        manifests_specs = fetch_openai_plugins_manifest_and_spec(cfg)
        if manifests_specs.keys():
            manifests_specs_clients = initialize_openai_plugins(manifests_specs, cfg, debug)
            for url, openai_plugin_meta in manifests_specs_clients.items():
                if blacklist_whitelist_check(url, cfg):
                    plugin = BaseOpenAIPlugin(openai_plugin_meta)
                    loaded_plugins.append(plugin)

    if loaded_plugins:
        print(f"\nPlugins found: {len(loaded_plugins)}\n" "--------------------")
    for plugin in loaded_plugins:
        print(f"{plugin._name}: {plugin._version} - {plugin._description}")
    return loaded_plugins

def blacklist_whitelist_check(plugin_name: str, cfg: Config) -> bool:
    """Check if the plugin is in the whitelist or blacklist.

    Args:
        plugin_name (str): Name of the plugin.
        cfg (Config): Config object.

    Returns:
        True or False
    """
    if plugin_name in cfg.plugins_blacklist:
        return False
    if plugin_name in cfg.plugins_whitelist:
        return True
    ack = input(
        f"WARNNG Plugin {plugin_name} found. But not in the"
        " whitelist... Load? (y/n): "
    )
    return ack.lower() == "y"