package nju.seec.helper.controller;

import nju.seec.helper.aspect.auth.Auth;
import nju.seec.helper.controller.response.PageResponse;
import nju.seec.helper.dto.*;
import nju.seec.helper.service.SlideService;
import nju.seec.helper.util.enums.UserType;
import nju.seec.helper.vo.SlideVO;
import org.springframework.data.domain.Pageable;
import org.springframework.data.web.PageableDefault;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;

/**
 * 课件
 *
 * @author cst
 */
@RestController
@RequestMapping("/api/slide")
public class SlideController {
    private final SlideService slideService;

    public SlideController(SlideService slideService) {
        this.slideService = slideService;
    }

    /**
     * 教师创建课件
     */
    @Auth(roles = UserType.TEACHER, message = "创建课件")
    @PostMapping
    public ResponseEntity<SlideVO> createSlide(LoginUser user,
                                               @Valid SlideDTO slideDTO) {
        SlideVO slideVO = slideService.createSlide(user, slideDTO);
        return ResponseEntity.ok(slideVO);
    }

    /**
     * 教师修改课件
     */
    @Auth(roles = UserType.TEACHER, message = "修改课件")
    @PutMapping
    public SlideVO modifySlide(LoginUser user,
                               @Validated @RequestBody ModifySlideDTO modifySlideDTO) {
        return slideService.modifySlide(user, modifySlideDTO);
    }

    /**
     * 教师修改课件状态
     */
    @Auth(roles = UserType.TEACHER, message = "修改课件状态")
    @PutMapping("/state")
    public void modifySlideState(LoginUser user,
                                 @Validated @RequestBody SlideStateDTO slideStateDTO) {
        slideService.modifySlideState(user, slideStateDTO);
    }

    /**
     * 教师修改课件状态
     */
    @Auth(roles = UserType.TEACHER, message = "修改课件状态")
    @PutMapping("/file")
    public void modifySlideFile(LoginUser user,
                                @Validated SlideFileDTO slideFileDTO) {
        slideService.modifySlideFile(user, slideFileDTO);
    }

    /**
     * 教师删除课件
     */
    @Auth(roles = UserType.TEACHER, message = "删除课件")
    @DeleteMapping("/{slideId}")
    public void removeSlide(LoginUser user,
                            @PathVariable Integer slideId) {
        slideService.removeSlide(user, slideId);
    }

    /**
     * 教师获取课件
     */
    @Auth(roles = UserType.TEACHER, message = "获取课件")
    @GetMapping("/teacher")
    public PageResponse<SlideVO> teacherGetSlides(LoginUser user,
                                                  @RequestParam(required = false, defaultValue = "") String key,
                                                  @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        return PageResponse.of(slideService.teacherGetSlides(user, key, pageable));
    }

    /**
     * 教师基于课程获取课件
     */
    @Auth(roles = UserType.TEACHER, message = "获取课件")
    @GetMapping("/teacher/course/{courseId}")
    public PageResponse<SlideVO> teacherGetSlidesByCourse(LoginUser user,
                                                          @PathVariable Integer courseId,
                                                          @RequestParam(required = false, defaultValue = "") String key,
                                                          @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        return PageResponse.of(slideService.teacherGetSlidesByCourse(user, courseId, key, pageable));
    }

    /**
     * 学生基于课程获取课件
     */
    @Auth(roles = UserType.STUDENT, message = "获取课件")
    @GetMapping("/student/course/{courseId}")
    public PageResponse<SlideVO> studentGetSlidesByCourse(LoginUser user,
                                                          @PathVariable Integer courseId,
                                                          @RequestParam(required = false, defaultValue = "") String key,
                                                          @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        return PageResponse.of(slideService.studentGetSlidesByCourse(user, courseId, key, pageable));
    }

    /**
     * 获取课件链接
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "获取课件链接")
    @GetMapping("/{slideId}/url")
    public String getSlideUrl(LoginUser user,
                              @PathVariable Integer slideId) {
        return slideService.getSlideUrl(user, slideId);
    }

    /**
     * 获取某课件
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "获取课件")
    @GetMapping("/{slideId}")
    public SlideVO getOneSlide(LoginUser user, @PathVariable Integer slideId) {
        return slideService.getOneSlide(user, slideId);
    }
}