using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.DataProtection.KeyManagement;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Options;
using WIDESEA_Core.BaseServices;
using WIDESEA_Core.Helper;

namespace WIDESEA_Core.BaseController
{
    [Authorize, ApiController]
    public class ApiBaseController<IService, TEntity> : Controller
    {
        protected IService Service;

        public ApiBaseController(IService service)
        {
            Service = service;
        }

        /// <summary>
        /// 获取分页数据
        /// </summary>
        /// <param name="options">分页查询参数</param>
        /// <returns>分页查询结果</returns>
        [HttpPost, Route("GetPageData")]
        public virtual ActionResult GetPageData([FromBody] PageDataOptions options)
        {
            return Json(InvokeService("GetPageData", new object[] { options }));
        }

        /// <summary>
        /// 获取详情页数据
        /// </summary>
        /// <param name="pageData">分页查询参数</param>
        /// <returns>返回详情页数据结果</returns>
        [HttpPost, Route("GetDetailPage")]
        public virtual ActionResult GetDetailPage([FromBody] PageDataOptions pageData)
        {
            return Json(InvokeService("GetDetailPage", new object[] { pageData }));
        }

        /// <summary>
        /// 添加数据
        /// </summary>
        /// <param name="options">要添加的实体数据</param>
        /// <returns>操作结果</returns>
        [HttpPost, Route("AddData")]
        public virtual ActionResult AddData([FromBody] TEntity options)
        {
            return Json(InvokeService("AddData", new object[] { options }));
        }

        /// <summary>
        /// 添加数据
        /// </summary>
        /// <param name="options">保存模型参数</param>
        /// <returns>操作结果</returns>
        [HttpPost, Route("Add")]
        public virtual ActionResult Add([FromBody] SaveModel options)
        {
            return Json(InvokeService("AddData", new object[] { options }));
        }

        /// <summary>
        /// 更新数据
        /// </summary>
        /// <param name="options">包含更新数据的模型</param>
        /// <returns>操作结果</returns>
        [HttpPost, Route("Update")]
        public virtual ActionResult Update([FromBody] SaveModel options)
        {
            return Json(InvokeService("UpdateData", new object[] { options }));
        }

        /// <summary>
        /// 更新数据
        /// </summary>
        /// <param name="options">要更新的实体数据</param>
        /// <returns>操作结果</returns>
        [HttpPost, Route("UpdateData")]
        public virtual ActionResult UpdateData([FromBody] TEntity options)
        {
            return Json(InvokeService("UpdateData", new object[] { options }));
        }

        /// <summary>
        /// 处理删除数据的HTTP POST请求
        /// </summary>
        /// <param name="key">要删除的数据主键数组</param>
        /// <returns>返回删除操作的JSON格式结果</returns>
        /// <remarks>
        /// 该方法是虚拟方法，可通过路由"Del"访问，调用服务层的DeleteData方法执行实际删除操作
        /// </remarks>
        [HttpPost, Route("Del")]
        public virtual ActionResult Del([FromBody] object[] key)
        {
            return Json(InvokeService("DeleteData", new object[] { key }));
        }

        /// <summary>
        /// 导出数据接口
        /// </summary>
        /// <param name="loadData">分页数据选项</param>
        /// <returns>
        /// 成功时返回文件下载，失败时返回JSON格式的响应内容
        /// </returns>
        /// <remarks>
        /// 调用服务层"Export"方法处理导出请求，根据返回结果生成文件下载或错误响应
        /// </remarks>
        [HttpPost, Route("Export")]
        public virtual ActionResult Export([FromBody] PageDataOptions loadData)
        {
            WebResponseContent result = InvokeService("Export", new object[] { loadData }) as WebResponseContent;
            if (result.Status)
                return File(
                       System.IO.File.ReadAllBytes(result.Data.ToString()),
                       System.Net.Mime.MediaTypeNames.Application.Octet,
                       Path.GetFileName(result.Data.ToString())
                   );
            return Json(result);
        }

        /// <summary>
        /// 下载模板文件
        /// </summary>
        /// <returns>返回文件流或JSON结果</returns>
        /// <remarks>
        /// 支持POST和GET请求。当操作成功时返回文件流下载，失败时返回包含错误信息的JSON响应。
        /// </remarks>
        [HttpPost, HttpGet, Route("DownLoadTemplate")]
        public virtual ActionResult DownLoadTemplate()
        {
            WebResponseContent result = InvokeService("DownLoadTemplate", new object[] { }) as WebResponseContent;
            if (result.Status)
                return File(
                       System.IO.File.ReadAllBytes(result.Data.ToString()),
                       System.Net.Mime.MediaTypeNames.Application.Octet,
                       Path.GetFileName(result.Data.ToString())
                   );
            return Json(result);
        }

        /// <summary>
        /// 导入文件数据
        /// </summary>
        /// <param name="fileInput">上传的文件列表</param>
        /// <returns>导入操作结果</returns>
        [HttpPost, Route("Import")]
        public virtual ActionResult Import(List<IFormFile> fileInput)
        {
            return Json(InvokeService("Import", new object[] { fileInput }));
        }

        /// <summary>
        /// 导出种子数据API接口
        /// </summary>
        /// <returns>返回种子数据导出结果</returns>
        /// <remarks>该接口允许匿名访问</remarks>
        [HttpPost, Route("ExportSeedData"), AllowAnonymous]
        public ActionResult ExportSeedData()
        {
            return Json(InvokeService("ExportSeedData", new object[] { }));
        }

        /// <summary>
        /// 调用服务方法
        /// </summary>
        /// <param name="methodName">要调用的方法名称</param>
        /// <param name="parameters">方法参数数组</param>
        /// <returns>调用方法的返回结果</returns>
        /// <remarks>
        /// 通过反射动态调用Service对象中的指定方法
        /// </remarks>
        private object InvokeService(string methodName, object[] parameters)
        {
            Type t = Service.GetType();
            List<Type> types = new List<Type>();
            foreach (var param in parameters)
            {
                types.Add(param.GetType());
            }
            MethodInfo method = t.GetMethod(methodName, types.ToArray());
            return method.Invoke(Service, parameters);
        }
    }
}