# -*- coding: utf-8 -*-
"""播客端点（FastAPI 栈）——与 Flask 侧同名端点响应契约逐字段对齐。

已迁移（免费解析类，需登录，不扣次数）：
- POST/GET /api/v1/podcast/parse    ↔ Flask /podcast/parse
- POST/GET /api/v1/podcast/programs ↔ Flask /podcast/programs
- POST/GET /api/v1/podcast/search   ↔ Flask /podcast/search
- POST/GET /api/v1/podcast/hot      ↔ Flask /podcast/hot

说明：podcast_api 仍是同步模块（requests），此处以 asyncio.to_thread 包装，
让阻塞的上游调用不占用事件循环——行为与 Flask 侧一致，且不阻塞其它请求。
"""
import asyncio
from typing import Annotated

from fastapi import APIRouter, Depends, Request

import podcast_api
from core import media
from music_api import APIException
from web import ratelimit
from web.deps import SiteUser, require_login
from web.request_utils import cookies as _cookies
from web.request_utils import extract_id as _extract_id
from web.request_utils import request_data as _request_data
from web.request_utils import safe_int as _safe_int
from web.response import error, success
from web.serializers import record_req_log as _record_log

router = APIRouter()

LoginUser = Annotated[SiteUser, Depends(require_login)]









@router.api_route('/podcast/parse', methods=['GET', 'POST'])
async def podcast_parse(_user: LoginUser, request: Request):
    """播客解析：电台 → 详情+单集列表；单集 → 详情+音频直链。"""
    await ratelimit.guard(request, bucket='free', limit=30, window=60)
    data = await _request_data(request)
    raw = data.get('id') or data.get('url')
    if not raw:
        return error("参数 'id' 不能为空", 400)
    page_size = max(1, min(_safe_int(data.get('page_size'), 30), 100))
    quality = str(data.get('quality') or 'auto')

    cookies = _cookies()
    try:
        result = await asyncio.to_thread(
            podcast_api.parse_podcast_ref, raw, cookies, page_size=page_size)
    except APIException as e:
        return error(str(e), 404)
    except Exception:
        return error('服务暂时不可用，请稍后再试', 500)

    if result.get('kind') == 'program':
        program = result['program']
        song_id = program.get('main_song_id')
        url_info = None
        if song_id:
            try:
                url_info = await asyncio.to_thread(
                    podcast_api.resolve_episode_url, song_id, cookies, quality)
            except Exception:
                url_info = None
        if url_info:
            program['audio'] = {
                'url': url_info['url'],
                'level': url_info['level'],
                'level_name': media.quality_display_name(url_info['level']),
                'type': url_info['type'],
                'size': url_info['size'],
                'size_formatted': media.format_file_size(url_info['size']),
                'br': url_info['br'],
            }
        else:
            program['audio'] = None
        try:
            _record_log('解析', ratelimit.client_ip(request), program.get('name') or str(raw))
        except Exception:
            pass
    else:
        try:
            _record_log('解析', ratelimit.client_ip(request),
                        (result.get('radio') or {}).get('name') or str(raw))
        except Exception:
            pass

    return success(result, '播客解析成功')


@router.api_route('/podcast/programs', methods=['GET', 'POST'])
async def podcast_programs(_user: LoginUser, request: Request):
    """播客单集列表（分页加载）。"""
    await ratelimit.guard(request, bucket='free', limit=30, window=60)
    data = await _request_data(request)
    radio_id = data.get('radio_id') or data.get('id')
    if not radio_id:
        return error("参数 'radio_id' 不能为空", 400)
    limit = max(1, min(_safe_int(data.get('limit'), 30), 100))
    offset = max(0, _safe_int(data.get('offset'), 0))
    asc = str(data.get('asc', 'true')).lower() in ('1', 'true', 'yes')

    radio_id = _extract_id(str(radio_id))
    if not str(radio_id).isdigit():
        return error('无效的电台 ID')
    try:
        result = await asyncio.to_thread(
            podcast_api.get_radio_programs, radio_id, _cookies(),
            limit=limit, offset=offset, asc=asc)
        return success(result, '获取单集列表成功')
    except APIException as e:
        return error(str(e), 404)
    except Exception:
        return error('服务暂时不可用，请稍后再试', 500)


@router.api_route('/podcast/search', methods=['GET', 'POST'])
async def podcast_search(_user: LoginUser, request: Request):
    """播客搜索（电台 / 单集声音）。"""
    await ratelimit.guard(request, bucket='free', limit=30, window=60)
    data = await _request_data(request)
    keyword = data.get('keyword') or data.get('q')
    if not keyword:
        return error("参数 'keyword' 不能为空", 400)
    limit = max(1, min(_safe_int(data.get('limit'), 20), 50))
    offset = max(0, _safe_int(data.get('offset'), 0))
    search_type = data.get('type', 'all')
    if search_type not in ('all', 'radio', 'voice'):
        search_type = 'all'
    try:
        result = await asyncio.to_thread(
            podcast_api.search_podcast, keyword, _cookies(),
            limit=limit, offset=offset, search_type=search_type)
        return success(result, '播客搜索完成')
    except APIException as e:
        return error(str(e), 404)
    except Exception:
        return error('服务暂时不可用，请稍后再试', 500)


@router.api_route('/podcast/hot', methods=['GET', 'POST'])
async def podcast_hot(_user: LoginUser, request: Request):
    """热门播客 + 播客分类列表。"""
    await ratelimit.guard(request, bucket='free', limit=30, window=60)
    data = await _request_data(request)
    limit = max(1, min(_safe_int(data.get('limit'), 30), 100))
    offset = max(0, _safe_int(data.get('offset'), 0))
    cate_id = data.get('cate_id') or None
    try:
        radios = await asyncio.to_thread(
            podcast_api.get_hot_radios, _cookies(), limit=limit, offset=offset, cate_id=cate_id)
    except APIException as e:
        return error(str(e), 404)
    except Exception:
        return error('服务暂时不可用，请稍后再试', 500)
    try:
        categories = await asyncio.to_thread(podcast_api.get_categories)
    except APIException:
        categories = []
    # 满页视为可能还有更多（与 Flask 同口径）
    return success({'radios': radios, 'categories': categories,
                    'has_more': len(radios) >= limit}, '获取热门播客成功')