import asyncio
import logging
from importlib import resources

from fastapi import FastAPI, Depends, Security, HTTPException
from fastapi.security import APIKeyQuery, APIKeyHeader
from starlette.middleware.cors import CORSMiddleware
from starlette.responses import RedirectResponse
from starlette.staticfiles import StaticFiles

from mediaflow_proxy.configs import settings
from mediaflow_proxy.routes import proxy_router, extractor_router, speedtest_router
from mediaflow_proxy.schemas import GenerateUrlRequest, GenerateMultiUrlRequest, MultiUrlRequestItem
from mediaflow_proxy.utils.crypto_utils import EncryptionHandler, EncryptionMiddleware
from mediaflow_proxy.utils.http_utils import encode_mediaflow_proxy_url

logging.basicConfig(level=settings.log_level, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s")
app = FastAPI()
api_password_query = APIKeyQuery(name="api_password", auto_error=False)
api_password_header = APIKeyHeader(name="api_password", auto_error=False)
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)
app.add_middleware(EncryptionMiddleware)


async def verify_api_key(api_key: str = Security(api_password_query), api_key_alt: str = Security(api_password_header)):
    """
    Verifies the API key for the request.

    Args:
        api_key (str): The API key to validate.
        api_key_alt (str): The alternative API key to validate.

    Raises:
        HTTPException: If the API key is invalid.
    """
    if not settings.api_password:
        return

    if api_key == settings.api_password or api_key_alt == settings.api_password:
        return

    raise HTTPException(status_code=403, detail="Could not validate credentials")


@app.get("/health")
async def health_check():
    return {"status": "healthy"}


@app.get("/favicon.ico")
async def get_favicon():
    return RedirectResponse(url="/logo.png")


@app.get("/speedtest")
async def show_speedtest_page():
    return RedirectResponse(url="/speedtest.html")


@app.post(
    "/generate_encrypted_or_encoded_url",
    description="Generate a single encoded URL",
    response_description="Returns a single encoded URL",
    deprecated=True,
    tags=["url"],
)
async def generate_encrypted_or_encoded_url(
    request: GenerateUrlRequest,
):
    """
    Generate a single encoded URL based on the provided request.
    """
    return {"encoded_url": (await generate_url(request))["url"]}


@app.post(
    "/generate_url",
    description="Generate a single encoded URL",
    response_description="Returns a single encoded URL",
    tags=["url"],
)
async def generate_url(request: GenerateUrlRequest):
    """Generate a single encoded URL based on the provided request."""
    encryption_handler = EncryptionHandler(request.api_password) if request.api_password else None

    # Ensure api_password is in query_params if provided
    query_params = request.query_params.copy()
    if "api_password" not in query_params and request.api_password:
        query_params["api_password"] = request.api_password

    # Convert IP to string if provided
    ip_str = str(request.ip) if request.ip else None

    encoded_url = encode_mediaflow_proxy_url(
        mediaflow_proxy_url=request.mediaflow_proxy_url,
        endpoint=request.endpoint,
        destination_url=request.destination_url,
        query_params=query_params,
        request_headers=request.request_headers,
        response_headers=request.response_headers,
        encryption_handler=encryption_handler,
        expiration=request.expiration,
        ip=ip_str,
        filename=request.filename,
    )

    return {"url": encoded_url}


@app.post(
    "/generate_urls",
    description="Generate multiple encoded URLs with shared common parameters",
    response_description="Returns a list of encoded URLs",
    tags=["url"],
)
async def generate_urls(request: GenerateMultiUrlRequest):
    """Generate multiple encoded URLs with shared common parameters."""
    # Set up encryption handler if password is provided
    encryption_handler = EncryptionHandler(request.api_password) if request.api_password else None

    # Convert IP to string if provided
    ip_str = str(request.ip) if request.ip else None

    async def _process_url_item(
        url_item: MultiUrlRequestItem,
    ) -> str:
        """Process a single URL item with common parameters and return the encoded URL."""
        query_params = url_item.query_params.copy()
        if "api_password" not in query_params and request.api_password:
            query_params["api_password"] = request.api_password

        # Generate the encoded URL
        return encode_mediaflow_proxy_url(
            mediaflow_proxy_url=request.mediaflow_proxy_url,
            endpoint=url_item.endpoint,
            destination_url=url_item.destination_url,
            query_params=query_params,
            request_headers=url_item.request_headers,
            response_headers=url_item.response_headers,
            encryption_handler=encryption_handler,
            expiration=request.expiration,
            ip=ip_str,
            filename=url_item.filename,
        )

    tasks = [_process_url_item(url_item) for url_item in request.urls]
    encoded_urls = await asyncio.gather(*tasks)
    return {"urls": encoded_urls}


app.include_router(proxy_router, prefix="/proxy", tags=["proxy"], dependencies=[Depends(verify_api_key)])
app.include_router(extractor_router, prefix="/extractor", tags=["extractors"], dependencies=[Depends(verify_api_key)])
app.include_router(speedtest_router, prefix="/speedtest", tags=["speedtest"], dependencies=[Depends(verify_api_key)])

static_path = resources.files("mediaflow_proxy").joinpath("static")
app.mount("/", StaticFiles(directory=str(static_path), html=True), name="static")


def run():
    import uvicorn

    uvicorn.run(app, host="0.0.0.0", port=8888, log_level="info", workers=3)


if __name__ == "__main__":
    run()