using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Mvc;
using MyHomePage.Api.Common;
using MyHomePage.Api.Services;

namespace MyHomePage.Api.Controllers;

/// <summary>工具类 API：favicon 抓取等小工具（手动测试用 / 调试入口）。</summary>
[ApiController]
[Route("api/utility")]
public class UtilityController : ControllerBase
{
    private readonly FaviconService _favicon;

    public UtilityController(FaviconService favicon) => _favicon = favicon;

    /// <summary>
    /// P31：手动触发 favicon 抓取（不影响正常创建流程）。
    /// 任何失败（网络/404/SSRF）均返回 iconUrl=null，由调用方静默用默认。
    /// </summary>
    [HttpPost("favicon")]
    public async Task<ApiResponse<FaviconResultDto>> FetchFavicon([FromBody] FaviconRequest request)
    {
        if (string.IsNullOrWhiteSpace(request.Url))
            throw new BusinessException("URL 不能为空", 400);

        var iconUrl = await _favicon.FetchAndSaveAsync(request.Url, HttpContext.RequestAborted);
        return ApiResponse<FaviconResultDto>.Ok(new FaviconResultDto { Url = request.Url, IconUrl = iconUrl });
    }
}

/// <summary>favicon 抓取请求 DTO</summary>
public class FaviconRequest
{
    [Required] public string Url { get; set; } = string.Empty;
}

/// <summary>favicon 抓取结果 DTO</summary>
public class FaviconResultDto
{
    public string Url { get; set; } = string.Empty;
    public string? IconUrl { get; set; }
}