package com.teaching.backend.controller.courses;


import com.teaching.backend.common.BaseResponse;
import com.teaching.backend.common.ErrorCode;
import com.teaching.backend.common.ResultUtils;
import com.teaching.backend.exception.BusinessException;

import com.teaching.backend.filter.ValidateParams;
import com.teaching.backend.model.dto.courses.CoursesDTO;
import com.teaching.backend.model.dto.courses.PageDTO;

import com.teaching.backend.model.entity.courses.Courses;
import com.teaching.backend.model.query.CourseQuery;
import com.teaching.backend.model.vo.courses.CoursesVO;
import com.teaching.backend.service.courses.ICoursesService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletResponse;
import java.util.*;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author zjh
 * @since 2024-05-30
 */
@Api(tags = "课程管理接口")
@RestController
@RequestMapping("/api/coursesteacher")
public class CoursesController {

    @Autowired
    ICoursesService coursesService;



    @ApiOperation("网站首页")
    @GetMapping("/index")
    public BaseResponse<Map<String,Object>> getData(@RequestParam("page") int page, @RequestParam("pageSize") int pageSize) {
        List<CoursesVO> coursesVo = coursesService.getPagePageSize(page, pageSize);
//        System.out.println(coursesVo);
        long totalcount = coursesService.count();
        long toatlPages = (int) Math.ceil((double)totalcount / pageSize);
        Map<String,Object> objectMap = new HashMap<>();
        objectMap.put("content",coursesVo);
        objectMap.put("totalcount", totalcount);
        objectMap.put("totalPages", toatlPages);
        objectMap.put("currentPage", page);
        return ResultUtils.success(objectMap);
    }

    @ApiOperation("新增课程--同步新增课程的总体目标并同时添加所有的分项目标")
    @ValidateParams({"teacher","img", "category", "nature","name","code","credit","classhours","assessmenttype","assessmentway"}) // 需要校验的参数
    @PostMapping("/addcourse")
    public BaseResponse<String> saveCourse(@RequestBody CoursesDTO coursesDTO){
        String data = coursesService.saveCourseWithObjective(coursesDTO);
        return ResultUtils.success(data);
    }


    @ApiOperation("查询课程列表")
    @ValidateParams({"username"})
    @GetMapping("/page")
//    @PostMapping("/page")
    public BaseResponse<PageDTO<CoursesVO>> getCourses(CourseQuery courseQuery){
        PageDTO<CoursesVO> coursesList = coursesService.queryCourses(courseQuery);
        return ResultUtils.success(coursesList);
    }

    @ApiOperation("根据id查询课程")
    @ValidateParams({"id"})
    @GetMapping("/{id}")
    public BaseResponse<CoursesDTO> getByIdCourse(@PathVariable String id){
        if(id==null){
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"课程id为空");
        }
        Courses course = coursesService.getById(id);
        CoursesDTO coursesDTO = new CoursesDTO();
        BeanUtils.copyProperties(course,coursesDTO);
        return ResultUtils.success(coursesDTO);
    }

    @ApiOperation("根据id修改课程")
    @ValidateParams({"id","teacher","img", "category", "nature","name","code","credit","classhours","assessmenttype","assessmentway"})
    @PutMapping
    public BaseResponse<String> editCourse(@RequestBody CoursesDTO coursesDTO){
        coursesService.updateCourse(coursesDTO);
        return ResultUtils.success("编辑成功");
    }

    //TODO:删除功能暂未完善，数据缺失
    // 暂时发现有个漏洞 就是目标关联的有知识点的时候还是可以直接删除
    // （当有内容的时候本来就是得先删除内容--关联也有知识点   所以内容下面的不用校验   ）
    @ApiOperation("根据id删除课程")
    @ValidateParams({"id"})
    @DeleteMapping("/{id}")
    public BaseResponse deleteCourses(@PathVariable String id){

        coursesService.deleteBatchByIds(id);
//        coursesService.removeBatchByIds(ids);
        return ResultUtils.success("删除成功");
    }

    /**
     * 导出word
     * @param response
     * @throws Exception
     */
    @ApiOperation("导出word")
    @GetMapping(value = "/down")
    public void test( HttpServletResponse response) throws Exception{
        //-------------------------查询课程通过课程id查
        String id = "de3100cad98f76be3176dd39aa748a9e";
        coursesService.down(response, id);
    }
}