using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using VOL.Ai.IServices;
using VOL.Ai.Services;
using VOL.Business.IServices;
using VOL.Business.IServices.Training;
using VOL.Core.Filters;
using VOL.Core.Utilities;
using VOL.Entity.DomainModels;
using VOL.Entity.Enum;
using VOL.Model;
using VOL.Model.HomeWork;
using VOL.Model.Training.Response;
using VOL.System.IRepositories;
using VOL.System.Repositories;

namespace VOL.WebApi.Controllers.JingShiTiJiao
{
    [Route("api/[controller]")]
    [ApiController]
    [ApiExplorerSettings(GroupName = "v3")]
    [TypeFilter(typeof(CustomApiResponseFilter))]
    [AllowAnonymous]
    public class JingShiTiJiaoController : ControllerBase
    {
        #region  初始化

        private readonly IS_HomeWorkService _homeWorkService;
        private readonly IJingShiTiJiaoService  _jingShiTiJiaoService;
        private readonly II_TrainingDataService _trainingDataService;

        private readonly S_StudentRepository _studentRepository;
        public JingShiTiJiaoController(
            IS_HomeWorkService homeWorkService, II_TrainingDataService trainingDataService,IJingShiTiJiaoService  jingShiTiJiaoService, S_StudentRepository studentRepository)
        {
            _homeWorkService = homeWorkService;
            _trainingDataService = trainingDataService;
            _jingShiTiJiaoService = jingShiTiJiaoService;
            _studentRepository = studentRepository;
        }

        #endregion


        #region 作业

        /// <summary>
        /// 作业列表
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetHomeWorkPageList))]
        public async Task<PageDataDto<HomeWorkListModel>> GetHomeWorkPageList(HomeWorkPageListParam paramDto)
        {
            return await _homeWorkService.GetHomeWorkPageList(paramDto);
        }

        /// <summary>
        /// 作业下学生列表
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetHomeWorkStudents))]
        public async Task<PageDataDto<HomeWorkStudentsModel>> GetHomeWorkStudents(HomeWorkStudentsParam paramDto)
        {
            return await _homeWorkService.GetHomeWorkStudents(paramDto);
        }

        /// <summary>
        /// 作业详情
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetSubmittedAssignments))]
        public async Task<List<SubmittedAssignmentsModel>> GetSubmittedAssignments(int homeWorkId, string studentNo)
        {
            return await _homeWorkService.GetSubmittedAssignments(homeWorkId, studentNo);
        }
        #endregion


        #region 课堂报告

        /// <summary>
        /// 课堂报告列表
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetClassReportList))]
        public async Task<PageDataDto<ClassReportModel>> GetClassReportList(ClassReportListParam paramDto)
        {
            return await _trainingDataService.GetClassReportList(paramDto);
        }

        /// <summary>
        /// 课堂报告详情
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetClassReportDetails))]
        public async Task<GetClassReportDetailsModel> GetClassReportDetails(int id)
        {
            return await _trainingDataService.GetClassReportDetails(id);
        }

        /// <summary>
        /// 学生课堂报告详情
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetStudentClassReportDetails))]
        public async Task<GetStudentClassReportDetailsModel> GetStudentClassReportDetails(GetStudentClassReportDetailsDto paramDto)
        {
            return await _trainingDataService.GetStudentClassReportDetails(paramDto);
        }

        #endregion


        /// <summary>
        /// 获取所有年级名称
        /// </summary>
        /// <returns></returns>
        /// <summary>
        /// 获取年级列表
        /// </summary>
        /// <returns></returns>
        [HttpGet(nameof(GetGradeList))]
        public async Task<List<GradeNameModel>> GetGradeList(string schoolCode)
        {
            if (string.IsNullOrWhiteSpace(schoolCode))
                return new List<GradeNameModel>();

            // 1️⃣ 从数据库读取年级
            var grades = await _studentRepository.DbContext.Set<JS_Grade>()
                .Where(x => x.SchoolCode == schoolCode)
                .ToListAsync();

            if (grades == null || !grades.Any())
                return new List<GradeNameModel>();

            // 2️⃣ 从数据库读取班级
            var allGradeNos = grades.Select(x => x.GradeNo).ToList();
            var classes = await _studentRepository.DbContext.Set<JS_Class>()
                .Where(x => x.SchoolCode == schoolCode && allGradeNos.Contains(x.GradeNo))
                .ToListAsync();

            // 3️⃣ 按年级分组班级
            var result = grades.Select(g => new GradeNameModel
            {
                Id = (int)g.Id,
                GradeName = g.GradeName,
                Class = classes
                    .Where(c => c.GradeNo == g.GradeNo)
                    .Select(c => new ClassNameModel
                    {
                        Id = (int)c.Id,
                        ClassName = c.ClassName
                    })
                    .ToList()
            }).ToList();

            return result;
        }

    }
}