import sys
import time
from fastapi import FastAPI, BackgroundTasks, Request, HTTPException, Security, render_template, jsonify
from fastapi.security import APIKeyHeader
from fastapi.responses import FileResponse
from fastapi.concurrency import run_in_threadpool
import yt_dlp
import ffmpeg
import urllib.parse
import os
from datetime import datetime, timedelta
import schedule
import requests
import uvicorn
import subprocess
import json
from dotenv import load_dotenv
import mimetypes
import tempfile
from PIL import Image
from io import BytesIO
from pathlib import Path
from fastapi.staticfiles import StaticFiles
from collections import defaultdict
from starlette.responses import JSONResponse
import logging
import gc
from typing import Dict, Any
import re
import asyncio
import cloudscraper

tmp_dir = tempfile.gettempdir()
BASE_URL = "https://chrunos-zam.hf.space"


def env_to_cookies(env_content: str, output_file: str) -> None:
    """Convert environment variable content back to cookie file"""
    try:
        # Extract content from env format
        if '="' not in env_content:
            raise ValueError("Invalid env content format")
            
        content = env_content.split('="', 1)[1].strip('"')
        
        # Replace escaped newlines with actual newlines
        cookie_content = content.replace('\\n', '\n')
        
        # Write to cookie file
        with open(output_file, 'w') as f:
            f.write(cookie_content)
            
    except Exception as e:
        raise ValueError(f"Error converting to cookie file: {str(e)}")

def save_to_env_file(env_content: str, env_file: str = '.env') -> None:
    """Save environment variable content to .env file"""
    try:
        with open(env_file, 'w') as f:
            f.write(env_content)
        #print(f"Successfully saved to {env_file}")
    except Exception as e:
        raise ValueError(f"Error saving to env file: {str(e)}")

def env_to_cookies_from_env(output_file: str) -> None:
    """Convert environment variable from .env file to cookie file"""
    try:
        load_dotenv()  # Load from .env file
        env_content = os.getenv('FIREFOX_COOKIES')
        #print(f"Printing env content: \n{env_content}")
        if not env_content:
            raise ValueError("FIREFOX_COOKIES not found in .env file")
            
        env_to_cookies(f'FIREFOX_COOKIES="{env_content}"', output_file)
    except Exception as e:
        raise ValueError(f"Error converting to cookie file: {str(e)}")

def get_cookies():
    """Get cookies from environment variable"""
    load_dotenv()
    cookie_content = os.getenv('FIREFOX_COOKIES')
    #print(cookie_content)
    if not cookie_content:
        raise ValueError("FIREFOX_COOKIES environment variable not set")
    return cookie_content

def create_temp_cookie_file():
    """Create temporary cookie file from environment variable"""
    temp_cookie = tempfile.NamedTemporaryFile(mode='w+', delete=False, suffix='.txt')
    try:
        cookie_content = get_cookies()
        # Replace escaped newlines with actual newlines
        cookie_content = cookie_content.replace('\\n', '\n')
        temp_cookie.write()
        temp_cookie.flush()
        return Path(temp_cookie.name)
    finally:
        temp_cookie.close()

load_dotenv()
app = FastAPI()



@app.get('/')
def main():
    return "API Is Running. If you want to use this API, contact Cody from chrunos.com"

@app.get("/get_video_url")
async def get_video_url(youtube_url: str):
    try:
        cookiefile = "firefox-cookies.txt"
        env_to_cookies_from_env("firefox-cookies.txt")
        # Add cookies
        ydl_opts["cookiefile"] =  "firefox-cookies.txt" #create_temp_cookie_file() 
    
        
        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
            info = ydl.extract_info(youtube_url, download=False)
            return info
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))



# Define a global temporary download directory
global_download_dir = tempfile.mkdtemp()



class RateLimiter:
    def __init__(self, max_requests: int, time_window: timedelta):
        self.max_requests = max_requests
        self.time_window = time_window
        self.requests: Dict[str, list] = defaultdict(list)
    
    def _cleanup_old_requests(self, user_ip: str) -> None:
        """Remove requests that are outside the time window."""
        current_time = time.time()
        self.requests[user_ip] = [
            timestamp for timestamp in self.requests[user_ip]
            if current_time - timestamp < self.time_window.total_seconds()
        ]
    
    def is_rate_limited(self, user_ip: str) -> bool:
        """Check if the user has exceeded their rate limit."""
        self._cleanup_old_requests(user_ip)
        
        # Get current count after cleanup
        current_count = len(self.requests[user_ip])
        
        # Add current request timestamp (incrementing the count)
        current_time = time.time()
        self.requests[user_ip].append(current_time)
        
        # Check if user has exceeded the maximum requests
        return (current_count + 1) > self.max_requests
    
    def get_current_count(self, user_ip: str) -> int:
        """Get the current request count for an IP."""
        self._cleanup_old_requests(user_ip)
        return len(self.requests[user_ip])


# Initialize rate limiter with 100 requests per day
rate_limiter = RateLimiter(
    max_requests=50,
    time_window=timedelta(days=1)
)

def get_user_ip(request: Request) -> str:
    """Helper function to get user's IP address."""
    forwarded = request.headers.get("X-Forwarded-For")
    if forwarded:
        return forwarded.split(",")[0]
    return request.client.host


class ApiRotator:
    def __init__(self, apis):
        self.apis = apis
        self.last_successful_index = None

    def get_prioritized_apis(self):
        if self.last_successful_index is not None:
            # Move the last successful API to the front
            rotated_apis = (
                [self.apis[self.last_successful_index]] + 
                self.apis[:self.last_successful_index] + 
                self.apis[self.last_successful_index+1:]
            )
            return rotated_apis
        return self.apis

    def update_last_successful(self, index):
        self.last_successful_index = index

# In your function:
api_rotator = ApiRotator([
    "https://cobalt-api.ayo.tf",
    "https://cblt.fariz.dev",
    "http://34.107.254.11",
    "https://dwnld.nichind.dev",
    "https://cobalt-api.kwiatekmiki.com",
    "https://yt.edd1e.xyz/"    
])



async def get_track_download_url(video_url: str) -> str:
    apis = api_rotator.get_prioritized_apis()
    session = cloudscraper.create_scraper()  # Requires cloudscraper package
    headers = {
        "Accept": "application/json",
        "Content-Type": "application/json",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
    }

    for i, api_url in enumerate(apis):
        try:
            logger.info(f"Attempting to get download URL from: {api_url}")
            y_url = video_url
            response = session.post(
                api_url,
                timeout=20,
                json={"url": y_url, "videoQuality": "720"},
                headers=headers
            )
            logger.info(f"Response status: {response.status_code}")
            logger.info(f"Response content: {response.content}")

            if response.headers.get('content-type', '').startswith('application/json'):
                json_response = response.json()
                error_code = json_response.get("error", {}).get("code", "")
                
                if error_code == "error.api.content.video.unavailable":
                    logger.warning(f"Video unavailable error from {api_url}")
                    break  # Only break for specific error
                
                if "url" in json_response:
                    api_rotator.update_last_successful(i)
                    return json_response["url"]
                
        except Exception as e:
            logger.error(f"Failed with {api_url}: {str(e)}")
            continue
    
    logger.error(f"No download URL found")
    return {"error": "Download URL not found"}



@app.post("/maxs")
async def download_high_quality_video(request: Request):
    user_ip = get_user_ip(request)
    
    if rate_limiter.is_rate_limited(user_ip):
        current_count = rate_limiter.get_current_count(user_ip)
        raise HTTPException(
            status_code=429,
            detail={
                "error": "You have exceeded the maximum number of requests per day. Please try again tomorrow.",
                "url": "https://t.me/chrunoss"
            }
        )

    
    data = await request.json()
    restricted_domain = "chrunos.com"
    video_url = data.get('url')
    is_youtube_url = re.search(r'(youtube\.com|youtu\.be)', video_url) is not None
    if video_url and restricted_domain in video_url:
        return {"error": "What is wrong with you?", "url": "https://t.me/chrunoss"}
        
    quality = data.get('quality', '720')  # Default to 1080p if not specified

    # Check if the requested quality is above 1080p
    if int(quality) > 1080:
        error_message = "Quality above 1080p is for Premium Members Only. Please check the URL for more information."
        help_url = "https://chrunos.com/premium-shortcuts/"  # Replace with your actual URL
        return {"error": error_message, "url": help_url}

    cookiefile = "firefox-cookies.txt"
    env_to_cookies_from_env("firefox-cookies.txt")

    timestamp = datetime.now().strftime('%Y%m%d%H%M%S')
    output_template = str(Path(global_download_dir) / f'%(title).70s_{timestamp}.%(ext)s')

    # Convert quality string to height
    height_map = {
        '480': 480,
        '720': 720,
        '1080': 1080
    }
    max_height = height_map.get(quality, 1080)  # Use the quality variable correctly

    # Determine format string based on quality
    format_str = f'bestvideo[height<={max_height}][vcodec^=avc]+bestaudio/best'

    ydl_opts = {
        'format': format_str,
        'outtmpl': output_template,
        'quiet': True,
        'no_warnings': True,
        'noprogress': True,
        'merge_output_format': 'mp4'
    }

    if is_youtube_url:
        dl_url = await get_track_download_url(video_url)
        if dl_url and "http" in dl_url:
            result = {"url": dl_url}
            return jsonify(result)
        else:
            return {
                "error": "Failed to Fetch the video."
                }
       
    else:
        await run_in_threadpool(lambda: yt_dlp.YoutubeDL(ydl_opts).download([video_url]))
    
        downloaded_files = list(Path(global_download_dir).glob(f"*_{timestamp}.mp4"))
        if not downloaded_files:
            return {"error": "Download failed"}
    
        downloaded_file = downloaded_files[0]
        encoded_filename = urllib.parse.quote(downloaded_file.name)
        download_url = f"{BASE_URL}/file/{encoded_filename}"
    
    
        gc.collect()
    
        return {"url": download_url, "requests_remaining": rate_limiter.max_requests - rate_limiter.get_current_count(user_ip)}








api_key_header = APIKeyHeader(name="X-API-Key")

# Store this securely in your environment variables
API_KEY = os.getenv("API_KEY")

async def verify_api_key(api_key: str = Security(api_key_header)):
    if api_key != API_KEY:
        raise HTTPException(
            status_code=403,
            detail="Invalid API key"
        )
    return api_key

@app.post("/audio")
async def download_audio(
    request: Request,
    api_key: str = Security(verify_api_key)
):
    data = await request.json()
    video_url = data.get('url')
    cookiefile = "firefox-cookies.txt"
    env_to_cookies_from_env("firefox-cookies.txt")

    timestamp = datetime.now().strftime('%Y%m%d%H%M%S')
    output_template = str(Path(global_download_dir) / f'%(title).70s_{timestamp}.%(ext)s')

    ydl_opts = {
        'format': 'bestaudio/best',
        'outtmpl': output_template,
        'quiet': True,
        'no_warnings': True,
        'noprogress': True,
        'cookiefile': cookiefile,
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192'
        }]
        
    }

    await run_in_threadpool(lambda: yt_dlp.YoutubeDL(ydl_opts).download([video_url]))
    
    downloaded_files = list(Path(global_download_dir).glob(f"*_{timestamp}.*"))
    if not downloaded_files:
        return {"error": "Download failed"}

    downloaded_file = downloaded_files[0]
    encoded_filename = urllib.parse.quote(downloaded_file.name)
    download_url = f"{BASE_URL}/file/{encoded_filename}"
    gc.collect()
    return {"url": download_url}

# Configure logging
logging.basicConfig(level=logging.INFO)

@app.post("/search")
async def search_and_download_song(request: Request,
    api_key: str = Security(verify_api_key)
):
    data = await request.json()
    song_name = data.get('songname')
    artist_name = data.get('artist')
    if artist_name:
        search_query = f"ytsearch:{song_name} {artist_name}"
    else:
        search_query = f"ytsearch:{song_name}"

    logging.info(f"Search query: {search_query}")
    cookiefile = "firefox-cookies.txt"
    env_to_cookies_from_env("firefox-cookies.txt")
    
    timestamp = datetime.now().strftime('%Y%m%d%H%M%S')
    output_template = str(Path(global_download_dir) / f'%(title).70s_{timestamp}.%(ext)s')

    ydl_opts = {
        'format': 'bestaudio/best',
        'outtmpl': output_template,
        'quiet': True,
        'no_warnings': True,
        'noprogress': True,
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192'
        }],
        'cookiefile': cookiefile
    }

    try:
        logging.info("Starting yt-dlp search and download...")
        await run_in_threadpool(lambda: yt_dlp.YoutubeDL(ydl_opts).download([search_query]))
        logging.info("yt-dlp search and download completed")
    except yt_dlp.utils.DownloadError as e:
        error_message = str(e)
        logging.error(f"yt-dlp error: {error_message}")
        return JSONResponse(content={"error": error_message}, status_code=500)
    except Exception as e:
        error_message = str(e)
        logging.error(f"General error: {error_message}")
        return JSONResponse(content={"error": error_message}, status_code=500)
    
    downloaded_files = list(Path(global_download_dir).glob(f"*_{timestamp}.mp3"))
    if not downloaded_files:
        logging.error("Download failed: No MP3 files found")
        return JSONResponse(content={"error": "Download failed"}, status_code=500)

    downloaded_file = downloaded_files[0]
    encoded_filename = urllib.parse.quote(downloaded_file.name)
    download_url = f"{BASE_URL}/file/{encoded_filename}"
    logging.info(f"Download URL: {download_url}")

    # Log just before returning the response
    logging.info("Preparing to send response back to the client")
    gc.collect()
    return JSONResponse(content={"url": download_url}, status_code=200)

# Mount the static files directory
app.mount("/file", StaticFiles(directory=global_download_dir), name="downloads")







@app.middleware("http")
async def set_mime_type_middleware(request: Request, call_next):
    response = await call_next(request)
    if request.url.path.endswith(".mp4"):
        response.headers["Content-Type"] = "video/mp4"
    return response