import os
import platform
import shutil
import subprocess
import sys
import uuid
from pathlib import Path

import pipmaster as pm
import requests
import yaml
from ascii_colors import ASCIIColors, trace_exception
from fastapi import (APIRouter, FastAPI, File, HTTPException, Response,
                     UploadFile)
from fastapi.responses import (FileResponse, JSONResponse, PlainTextResponse,
                               StreamingResponse)
from lollms.security import check_access, sanitize_path
from packaging import version
from pydantic import BaseModel, Field

from lollms_webui import LOLLMSWebUI

if not pm.is_installed("httpx"):
    pm.install("httpx")
import httpx
from lollms.utilities import PackageManager


# Pull the repository if it already exists
def check_lollms_models_zoo():
    if not PackageManager.check_package_installed("zipfile"):
        PackageManager.install_or_update("zipfile36")


ASCIIColors.execute_with_animation("Checking zip library.", check_lollms_models_zoo)


import io
import shutil
import zipfile
from pathlib import Path

from pydantic import BaseModel

router = APIRouter()
lollmsElfServer: LOLLMSWebUI = LOLLMSWebUI.get_instance()


class AuthRequest(BaseModel):
    client_id: str


class AppInfo:
    def __init__(
        self,
        uid: str,
        name: str,
        folder_name: str,
        icon: str,
        category: str,
        description: str,
        author: str,
        version: str,
        creation_date: str,
        last_update_date: str,
        model_name: str,
        disclaimer: str,
        has_server: bool,
        has_readme: bool,
        is_public: bool,
        has_update: bool,
        installed: bool,
    ):
        self.uid = uid
        self.name = name
        self.folder_name = folder_name
        self.icon = icon
        self.category = category
        self.description = description
        self.author = author
        self.version = version
        self.creation_date = creation_date
        self.last_update_date = last_update_date
        self.model_name = model_name
        self.disclaimer = disclaimer
        self.has_server = has_server
        self.has_readme = has_readme
        self.has_update = has_update
        self.is_public = is_public
        self.installed = installed


@router.get("/apps")
async def list_apps():
    apps = []
    apps_zoo_path = lollmsElfServer.lollms_paths.apps_zoo_path
    REPO_DIR = lollmsElfServer.lollms_paths.personal_path / "apps_zoo_repo"
    if REPO_DIR.exists():
        remote_apps = [a.stem for a in REPO_DIR.iterdir()]
    else:
        remote_apps = []
    for app_name in apps_zoo_path.iterdir():
        try:
            if app_name.is_dir():
                icon_path = app_name / "icon.png"
                description_path = app_name / "description.yaml"
                description = ""
                author = ""
                current_version = ""
                model_name = ""
                disclaimer = ""
                has_server = False
                has_readme = False
                is_public = app_name.stem in remote_apps

                if description_path.exists():
                    with open(description_path, "r") as file:
                        data = yaml.safe_load(file)
                        application_name = data.get("name", app_name.name)
                        category = data.get("category", "generic")
                        description = data.get("description", "")
                        author = data.get("author", "")
                        current_version = data.get("version", "")
                        creation_date = data.get("creation_date", "unknown")
                        last_update_date = data.get("last_update_date", "")
                        current_version = data.get("version", "")
                        model_name = data.get("model_name", "")
                        disclaimer = data.get("disclaimer", "No disclaimer provided.")
                        has_server = data.get(
                            "has_server", (Path(app_name) / "server.py").exists()
                        )
                        has_readme = data.get(
                            "has_readme", (Path(app_name) / "README.md").exists()
                        )
                        installed = True
                else:
                    installed = False

                if is_public:
                    try:
                        with (REPO_DIR / app_name.stem / "description.yaml").open(
                            "r"
                        ) as file:
                            # Parse the YAML content
                            yaml_content = yaml.safe_load(file)
                            repo_version = yaml_content.get("version", "0")

                            # Compare versions using packaging.version
                            has_update = version.parse(
                                str(repo_version)
                            ) > version.parse(str(current_version))
                    except (yaml.YAMLError, FileNotFoundError) as e:
                        print(f"Error reading or parsing YAML file: {e}")
                        has_update = False
                else:
                    has_update = False

                if icon_path.exists():
                    uid = str(uuid.uuid4())
                    apps.append(
                        AppInfo(
                            uid=uid,
                            name=application_name,
                            folder_name=app_name.name,
                            icon=f"/apps/{app_name.name}/icon.png",
                            category=category,
                            description=description,
                            author=author,
                            version=current_version,
                            creation_date=creation_date,
                            last_update_date=last_update_date,
                            model_name=model_name,
                            disclaimer=disclaimer,
                            has_server=has_server,
                            has_readme=has_readme,
                            is_public=is_public,
                            has_update=has_update,
                            installed=installed,
                        )
                    )
        except Exception as ex:
            trace_exception(ex)

    return apps


class ShowAppsFolderRequest(BaseModel):
    client_id: str = Field(...)


@router.post("/show_apps_folder")
async def open_folder_in_vscode(request: ShowAppsFolderRequest):
    check_access(lollmsElfServer, request.client_id)
    # Get the current operating system
    current_os = platform.system()

    try:
        if current_os == "Windows":
            # For Windows
            subprocess.run(["explorer", lollmsElfServer.lollms_paths.apps_zoo_path])
        elif current_os == "Darwin":
            # For macOS
            subprocess.run(["open", lollmsElfServer.lollms_paths.apps_zoo_path])
        elif current_os == "Linux":
            # For Linux
            subprocess.run(["xdg-open", lollmsElfServer.lollms_paths.apps_zoo_path])
        else:
            print("Unsupported operating system.")
    except Exception as e:
        print(f"An error occurred: {e}")


class OpenFolderRequest(BaseModel):
    client_id: str = Field(...)
    app_name: str = Field(...)


@router.post("/open_app_in_vscode")
async def open_folder_in_vscode(request: OpenFolderRequest):
    check_access(lollmsElfServer, request.client_id)
    sanitize_path(request.app_name)
    # Construct the folder path
    folder_path = lollmsElfServer.lollms_paths.apps_zoo_path / request.app_name

    # Check if the folder exists
    if not folder_path.exists():
        raise HTTPException(status_code=404, detail="Folder not found")

    # Open the folder in VSCode
    try:
        os.system(f'code -n "{folder_path}"')  # This assumes 'code' is in the PATH
        return {"message": f"Opened {folder_path} in VSCode."}
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Failed to open folder: {str(e)}")


@router.get("/apps/{app_name}/{file}")
async def get_app_file(app_name: str, file: str):
    app_name = sanitize_path(app_name)
    file = sanitize_path(file)
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name / file
    if not app_path.exists():
        raise HTTPException(status_code=404, detail="App file not found")
    return FileResponse(app_path)


@router.get("/apps/{app_name}/{subfolder}/{file}")
async def get_app_file(app_name: str, subfolder: str, file: str):
    app_name = sanitize_path(app_name)
    subfolder = sanitize_path(subfolder)
    file = sanitize_path(file)
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name / subfolder / file
    if not app_path.exists():
        raise HTTPException(status_code=404, detail="App file not found")
    return FileResponse(app_path)


class AppNameInput(BaseModel):
    client_id: str
    app_name: str


import os
import tempfile
import zipfile
from io import BytesIO

from fastapi.responses import FileResponse, Response


@router.post("/download_app")
async def download_app(input_data: AppNameInput):
    check_access(lollmsElfServer, input_data.client_id)
    app_name = sanitize_path(input_data.app_name)
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name

    if not app_path.exists():
        raise HTTPException(status_code=404, detail="App not found")

    # Create a BytesIO object to store the zip file in memory
    zip_buffer = BytesIO()

    try:
        with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zip_file:
            for file in app_path.rglob("*"):
                if file.is_file() and ".git" not in file.parts:
                    relative_path = file.relative_to(app_path)
                    zip_file.write(file, arcname=str(relative_path))

        # Move the cursor to the beginning of the BytesIO object
        zip_buffer.seek(0)

        # Create a Response with the zip content
        return Response(
            content=zip_buffer.getvalue(),
            media_type="application/zip",
            headers={
                "Content-Disposition": f"attachment; filename={app_name}.zip",
                "Cache-Control": "no-cache",
                "Pragma": "no-cache",
                "Expires": "0",
            },
        )
    except Exception as e:
        raise HTTPException(
            status_code=500, detail=f"Error creating ZIP file: {str(e)}"
        )


@router.post("/upload_app")
async def upload_app(client_id: str, file: UploadFile = File(...)):
    check_access(lollmsElfServer, client_id)
    sanitize_path(file.filename)

    # Create a temporary directory to extract the zip file
    temp_dir = lollmsElfServer.lollms_paths.personal_path / "temp"
    os.makedirs(temp_dir, exist_ok=True)

    try:
        # Save the uploaded file temporarily
        temp_file = temp_dir / file.filename
        with open(temp_file, "wb") as buffer:
            shutil.copyfileobj(file.file, buffer)

        # Extract the zip file
        with zipfile.ZipFile(temp_file, "r") as zip_ref:
            zip_ref.extractall(temp_dir)

        # Check for required files
        required_files = ["index.html", "description.yaml", "icon.png"]
        for required_file in required_files:
            if not os.path.exists(os.path.join(temp_dir, required_file)):
                raise HTTPException(
                    status_code=400, detail=f"Missing required file: {required_file}"
                )

        # Read the description.yaml file
        with open(os.path.join(temp_dir, "description.yaml"), "r") as yaml_file:
            description = yaml.safe_load(yaml_file)

        # Get the app name from the description
        app_name = description.get("name")
        if not app_name:
            raise HTTPException(
                status_code=400, detail="App name not found in description.yaml"
            )

        # Create the app directory
        app_dir = lollmsElfServer.lollms_paths.apps_zoo_path / app_name
        if os.path.exists(app_dir):
            raise HTTPException(
                status_code=400, detail="An app with this name already exists"
            )

        # Move the extracted files to the app directory
        shutil.move(temp_dir, app_dir)

        return JSONResponse(
            content={"message": f"App '{app_name}' uploaded successfully"},
            status_code=200,
        )

    except zipfile.BadZipFile:
        raise HTTPException(status_code=400, detail="Invalid zip file")
    except yaml.YAMLError:
        raise HTTPException(status_code=400, detail="Invalid YAML in description.yaml")
    finally:
        # Clean up temporary files
        if os.path.exists(temp_file):
            os.remove(temp_file)
        if os.path.exists(temp_dir):
            shutil.rmtree(temp_dir)


import json
import shutil
from pathlib import Path


@router.post("/install/{app_name}")
async def install_app(app_name: str, auth: AuthRequest):
    check_access(lollmsElfServer, auth.client_id)
    app_name = sanitize_path(app_name)

    REPO_DIR = lollmsElfServer.lollms_paths.personal_path / "apps_zoo_repo"

    # Create the app directory
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name
    os.makedirs(app_path, exist_ok=True)

    source_dir = REPO_DIR / app_name

    if not source_dir.exists():
        raise HTTPException(
            status_code=404, detail=f"App {app_name} not found in the local repository"
        )

    # Define directories to exclude
    exclude_dirs = {".vscode", ".git"}

    # Copy all files and directories, excluding the ones in exclude_dirs
    for item in source_dir.glob("*"):
        if item.is_dir():
            if item.name not in exclude_dirs:
                shutil.copytree(item, app_path / item.name, dirs_exist_ok=True)
        else:
            shutil.copy2(item, app_path)

    try:
        description_path = app_path / "description.yaml"
        requirements = app_path / "requirements.txt"

        if description_path.exists() and requirements.exists():
            with open(description_path, "r") as file:
                description_data = yaml.safe_load(file)
                if description_data.get(
                    "has_server", (Path(app_path) / "server.py").exists()
                ):
                    pass
    except Exception as ex:
        trace_exception(ex)

    return {"message": f"App {app_name} installed successfully."}


@router.post("/uninstall/{app_name}")
async def uninstall_app(app_name: str, auth: AuthRequest):
    check_access(lollmsElfServer, auth.client_id)
    app_name = sanitize_path(app_name)
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name
    if app_path.exists():
        shutil.rmtree(app_path)
        return {"message": f"App {app_name} uninstalled successfully."}
    else:
        raise HTTPException(status_code=404, detail="App not found")


REPO_URL = "https://github.com/ParisNeo/lollms_apps_zoo.git"


class ProxyRequest(BaseModel):
    url: str


@router.post("/api/proxy")
async def proxy(request: ProxyRequest):
    try:
        async with httpx.AsyncClient() as client:
            response = await client.get(request.url)
            return {"content": response.text}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


def clone_repo():
    REPO_DIR = Path(lollmsElfServer.lollms_paths.personal_path) / "apps_zoo_repo"

    # Check if the directory exists and if it is empty
    if REPO_DIR.exists():
        if any(REPO_DIR.iterdir()):  # Check if the directory is not empty
            print(f"Directory {REPO_DIR} is not empty. Aborting clone.")
            return
    else:
        REPO_DIR.mkdir(
            parents=True, exist_ok=True
        )  # Create the directory if it doesn't exist

    # Clone the repository
    subprocess.run(["git", "clone", REPO_URL, str(REPO_DIR)], check=True)
    print(f"Repository cloned into {REPO_DIR}")


def pull_repo():
    REPO_DIR = lollmsElfServer.lollms_paths.personal_path / "apps_zoo_repo"
    subprocess.run(["git", "-C", str(REPO_DIR), "pull"], check=True)


def load_apps_data():
    apps = []
    REPO_DIR = lollmsElfServer.lollms_paths.personal_path / "apps_zoo_repo"
    for item in os.listdir(REPO_DIR):
        item_path = os.path.join(REPO_DIR, item)
        if os.path.isdir(item_path):
            description_path = os.path.join(item_path, "description.yaml")
            icon_url = f"https://github.com/ParisNeo/lollms_apps_zoo/blob/main/{item}/icon.png?raw=true"

            if os.path.exists(description_path):
                with open(description_path, "r") as file:
                    description_data = yaml.safe_load(file)
                    apps.append(
                        AppInfo(
                            uid=str(uuid.uuid4()),
                            name=description_data.get("name", item),
                            folder_name=item,
                            icon=icon_url,
                            category=description_data.get("category", "generic"),
                            description=description_data.get("description", ""),
                            author=description_data.get("author", ""),
                            version=description_data.get("version", ""),
                            creation_date=description_data.get(
                                "creation_date", "unknown"
                            ),
                            last_update_date=description_data.get(
                                "last_update_date", "unknown"
                            ),
                            model_name=description_data.get("model_name", ""),
                            disclaimer=description_data.get(
                                "disclaimer", "No disclaimer provided."
                            ),
                            has_server=description_data.get(
                                "has_server", (Path(item_path) / "server.py").exists()
                            ),
                            has_readme=description_data.get(
                                "has_readme", (Path(item_path) / "README.md").exists()
                            ),
                            is_public=True,
                            has_update=False,
                            installed=True,
                        )
                    )
    return apps


@router.get("/lollms_assets/{asset_type}/{file_name}")
async def lollms_assets(asset_type: str, file_name: str):
    asset_type = sanitize_path(asset_type)
    file_name = sanitize_path(file_name)
    # Define the base path
    base_path = Path(__file__).parent

    # Determine the correct directory and file extension based on asset_type
    if asset_type == "js":
        directory = base_path / "libraries"
        file_extension = ".js"
        content_type = "application/javascript"
    elif asset_type == "css":
        directory = base_path / "styles"
        file_extension = ".css"
        content_type = "text/css"
    else:
        raise HTTPException(status_code=400, detail="Invalid asset type")

    # Sanitize the file name to prevent path traversal
    safe_file_name = sanitize_path(file_name)

    # Construct the full file path
    file_path = directory / f"{safe_file_name}{file_extension}"
    file_path_with_entension = directory / f"{safe_file_name}"
    if file_path_with_entension.is_file() and file_path_with_entension.is_relative_to(
        directory
    ):
        file_path = file_path_with_entension

    # Check if the file exists and is within the allowed directory
    if not file_path.is_file() or not file_path.is_relative_to(directory):
        raise HTTPException(status_code=404, detail="File not found")

    # Read and return the file content with the appropriate content type
    try:
        with file_path.open("r") as file:
            content = file.read()
        return Response(content=content, media_type=content_type)
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error reading file: {str(e)}")


@router.get("/template")
async def lollms_js():
    return {
        "start_header_id_template": lollmsElfServer.config.start_header_id_template,
        "end_header_id_template": lollmsElfServer.config.end_header_id_template,
        "separator_template": lollmsElfServer.config.separator_template,
        "start_user_header_id_template": lollmsElfServer.config.start_user_header_id_template,
        "end_user_header_id_template": lollmsElfServer.config.end_user_header_id_template,
        "end_user_message_id_template": lollmsElfServer.config.end_user_message_id_template,
        "start_ai_header_id_template": lollmsElfServer.config.start_ai_header_id_template,
        "end_ai_header_id_template": lollmsElfServer.config.end_ai_header_id_template,
        "end_ai_message_id_template": lollmsElfServer.config.end_ai_message_id_template,
        "system_message_template": lollmsElfServer.config.system_message_template,
    }


@router.get("/github/apps")
async def fetch_github_apps():
    try:
        clone_repo()
        pull_repo()
    except:
        ASCIIColors.error("Couldn't interact with ")
        lollmsElfServer.error(
            "Couldn't interact with github.\nPlease verify your internet connection"
        )
    apps = load_apps_data()
    return {"apps": apps}


def install_requirements(app_path: Path):
    requirements_file = app_path / "requirements.txt"
    if requirements_file.exists():
        try:
            subprocess.check_call(
                [sys.executable, "-m", "pip", "install", "-r", str(requirements_file)]
            )
            print("Requirements installed successfully.")
        except subprocess.CalledProcessError as e:
            print(f"Error installing requirements: {e}")
            raise


def run_server(app_path: Path):
    server_script = app_path / "server.py"
    if server_script.exists():
        try:
            # Install requirements if they exist
            install_requirements(app_path)

            # Determine the platform and open a terminal to execute the Python code.
            system = platform.system()
            if system == "Windows":
                process = subprocess.Popen(
                    f"""start cmd /k "cd /d "{app_path}" && python "{server_script}" && pause" """,
                    shell=True,
                )
            elif system == "Darwin":  # macOS
                process = subprocess.Popen(
                    [
                        "open",
                        "-a",
                        "Terminal",
                        f'cd "{app_path}" && python "{server_script}"',
                    ],
                    shell=True,
                )
            elif system == "Linux":
                process = subprocess.Popen(
                    [
                        "x-terminal-emulator",
                        "-e",
                        f'bash -c "cd \\"{app_path}\\" && python \\"{server_script}\\"; exec bash"',
                    ],
                    shell=True,
                )
            else:
                raise Exception(f"Unsupported platform: {system}")

        except Exception as ex:
            # Stop the timer.
            ASCIIColors.error(f"Error executing Python code: {ex}")
    else:
        ASCIIColors.error(f"Server script not found for app: {app_path.name}")


@router.post("/apps/start_server")
async def start_app_server(request: OpenFolderRequest):
    check_access(lollmsElfServer, request.client_id)
    app_name = sanitize_path(request.app_name)
    app_path = lollmsElfServer.lollms_paths.apps_zoo_path / app_name

    if not app_path.exists():
        raise HTTPException(status_code=404, detail="App not found")

    server_script = app_path / "server.py"
    if not server_script.exists():
        raise HTTPException(
            status_code=404, detail="Server script not found for this app"
        )

    # Start the server in the background
    run_server(app_path)

    return {"status": "success", "message": f"Server for {app_path} is starting"}