"""雜項 Routes Blueprint。從 app.py 抽離（Phase 3e）。

收納尚未歸類的小型 routes：
- POST /api/test_url：測試外部網址連通性
- GET  /brand_assets：品牌資產庫頁面
"""
import requests
from flask import Blueprint, jsonify, render_template, request
from urllib.parse import urljoin

from auth import login_required
from services.logger_manager import SystemLogger
from utils.security import validate_public_http_url

misc_bp = Blueprint('misc', __name__)
sys_log = SystemLogger('MiscRoutes').get_logger()


@misc_bp.route('/api/test_url', methods=['POST'])
@login_required
def test_url():
    """API: 測試網址是否有效"""
    try:
        data = request.get_json()
        url = data.get('url')
        if not url:
            return jsonify({"status": "error", "message": "網址不能為空"}), 400

        headers = {
            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
        }
        current_url = validate_public_http_url(url)
        response = None
        for _ in range(4):
            response = requests.get(
                current_url,
                headers=headers,
                timeout=(3.05, 10),
                allow_redirects=False,
                stream=True,
            )
            if response.status_code not in {301, 302, 303, 307, 308}:
                break
            location = response.headers.get('Location')
            response.close()
            if not location:
                break
            current_url = validate_public_http_url(urljoin(current_url, location))

        if response is None:
            raise ValueError('無法取得網址回應')
        status_code = response.status_code
        response.close()

        if status_code == 200:
            return jsonify({"status": "success", "message": f"✅ 連結有效 (Status: 200)"})
        else:
            return jsonify({"status": "warning", "message": f"⚠️ 連結回應異常 (Status: {status_code})"})

    except ValueError as exc:
        return jsonify({"status": "error", "message": str(exc)}), 400
    except Exception as exc:
        sys_log.warning(f"[Misc] [URL_CHECK] 連線失敗 | Error: {exc}")
        return jsonify({"status": "error", "message": "連線失敗，請確認網址後再試。"}), 502


@misc_bp.route('/brand_assets')
def brand_assets():
    """顯示品牌資產庫"""
    return render_template('brand_assets.html', active_page='brand_assets')