using MiaoYu.Api.Admin.ApplicationServices.Systems.Cos.Dtos;
using MiaoYu.Core.ApplicationServices;
using MiaoYu.Core.Cos.Configs;
using MiaoYu.Core.Cos.Models;
using MiaoYu.Core.Cos.Services;

namespace MiaoYu.Api.Admin.ApplicationServices.Systems.Cos;

/// <summary>
/// 腾讯云COS服务
/// </summary>
public class CosService : ApplicationService
{
    private readonly ICodeCosService _codeCosService;
    private readonly TencentConfig _tencentConfig;

    public CosService(ICodeCosService codeCosService, TencentConfig tencentConfig)
    {
        _codeCosService = codeCosService;
        _tencentConfig = tencentConfig;
    }

    /// <summary>
    /// 获取签名
    /// </summary>
    /// <returns></returns>
    public string GetCosSign()
    {
        var (sign, ex) = _codeCosService.GenerateSignURL(new CosGenerateSign());
        return sign;
    }

    /// <summary>
    /// 获取临时签名
    /// </summary>
    /// <param name="fileName">文件名</param>
    /// <param name="modelName">模型名称</param>
    /// <returns></returns>
    public GenerateTemporaryModel GetGenerateTemporaryKey(string fileName = "", string modelName = "")
    {
        var cosConfig = _tencentConfig.CosConfig;
        var t = new CosGenerateSign()
        {
            Prefixes = cosConfig.Prefixes ?? "file",
            Bucket = cosConfig?.Bucket,
            Region = cosConfig?.Region,
            AppId = cosConfig?.AppId,
            SecretId = cosConfig?.SecretId,
            SecretKey = cosConfig?.SecretKey,
            DurationSecond = cosConfig?.DurationSecond ?? 300
        };

        if (string.IsNullOrEmpty(modelName))
        {
            modelName = "images";
        }

        var tempFile = fileName;
        if (!string.IsNullOrEmpty(tempFile))
        {
            var ext = Path.GetExtension(tempFile);
            if (!string.IsNullOrEmpty(ext))
            {
                // 使用 UTC 时间生成时间戳文件名
                tempFile = $"{DateTimeOffset.UtcNow.ToUnixTimeSeconds()}{ext}";
            }
        }

        var model = _codeCosService.GenerateTemporaryKey(t);

        // 复制对象属性
        var generateTemporaryModel = model.CopyObject<CodeCosGenerateTemporaryKeyEntity, GenerateTemporaryModel>() ?? new GenerateTemporaryModel();
        generateTemporaryModel.Bucket = t.Bucket + "-" + t.AppId;
        generateTemporaryModel.Region = t.Region;
        generateTemporaryModel.Prefixes = t.Prefixes;
        // 修复日期格式：yyyMMdd -> yyyyMMdd
        generateTemporaryModel.FilePath = $"{t.Prefixes}/{modelName}/{DateTime.Now.ToString("yyyyMMdd")}/{tempFile}";
        generateTemporaryModel.DomainName = cosConfig.DomainName;

        return generateTemporaryModel;
    }
}