from fastapi import APIRouter, HTTPException
import feedparser
import httpx
from pydantic import BaseModel
from typing import List, Optional
from datetime import datetime

router = APIRouter()

RSS_FEED_URL = "https://rss.libsyn.com/shows/563180/destinations/4867845.xml"

class PodcastEpisode(BaseModel):
    id: str
    title: str
    description: str
    audio_url: str
    published_at: str
    duration: Optional[str] = None
    image_url: Optional[str] = None

class PodcastFeed(BaseModel):
    title: str
    description: str
    image_url: Optional[str] = None
    episodes: List[PodcastEpisode]

@router.get("/", response_model=PodcastFeed)
async def get_podcasts():
    try:
        async with httpx.AsyncClient() as client:
            response = await client.get(RSS_FEED_URL)
            response.raise_for_status()
            rss_content = response.text

        feed = feedparser.parse(rss_content)

        if feed.bozo:
             # Log warning but try to proceed if possible, or raise error
             print(f"Warning: Feed parsing error: {feed.bozo_exception}")

        episodes = []
        for entry in feed.entries:
            # Extract audio URL
            audio_url = ""
            for link in entry.links:
                if link.type == "audio/mpeg":
                    audio_url = link.href
                    break
            
            if not audio_url:
                continue # Skip episodes without audio

            # Extract image
            image_url = None
            if 'image' in entry:
                 image_url = entry.image.href
            elif 'itunes_image' in entry:
                 image_url = entry.itunes_image.href

            episodes.append(PodcastEpisode(
                id=entry.id,
                title=entry.title,
                description=entry.summary,
                audio_url=audio_url,
                published_at=entry.published,
                duration=entry.get('itunes_duration'),
                image_url=image_url
            ))

        feed_image = None
        if 'image' in feed.feed:
            feed_image = feed.feed.image.href
        elif 'itunes_image' in feed.feed:
            feed_image = feed.feed.itunes_image.href

        return PodcastFeed(
            title=feed.feed.title,
            description=feed.feed.description,
            image_url=feed_image,
            episodes=episodes
        )

    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Failed to fetch podcasts: {str(e)}")