package nju.seec.helper.controller;

import nju.seec.helper.aspect.auth.Auth;
import nju.seec.helper.controller.response.PageResourceResponse;
import nju.seec.helper.controller.response.ResourceResponse;
import nju.seec.helper.dto.LoginUser;
import nju.seec.helper.dto.SlideDTO;
import nju.seec.helper.dto.modify.ModifySlideDTO;
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.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

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

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

    /**
     * 教师创建幻灯片
     */
    @Auth(roles = UserType.TEACHER, message = "创建幻灯片")
    @PostMapping
    public ResourceResponse<SlideVO> createSlide(LoginUser user,
                                                 @Valid SlideDTO slideDTO) {
        SlideVO slideVO = slideService.createSlide(user, slideDTO);
        return ResourceResponse.of(slideVO);
    }

    /**
     * 教师修改幻灯片
     */
    @Auth(roles = UserType.TEACHER, message = "修改幻灯片")
    @PutMapping
    public ResourceResponse<SlideVO> modifySlide(LoginUser user,
                                                 @Valid @RequestBody ModifySlideDTO modifySlideDTO) {
        SlideVO slideVO = slideService.modifySlide(user, modifySlideDTO);
        return ResourceResponse.of(slideVO);
    }

    /**
     * 教师获取幻灯片
     */
    @Auth(roles = UserType.TEACHER, message = "获取幻灯片列表")
    @GetMapping("/teacher")
    public PageResourceResponse<SlideVO> teacherGetSlides(LoginUser user,
                                                          @RequestParam(required = false, defaultValue = "") String key,
                                                          @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        List<SlideVO> slideVOList = slideService.teacherGetSlides(user, key, pageable);
        return PageResourceResponse.of(slideVOList, pageable.getPageNumber(), pageable.getPageSize());
    }

    /**
     * 教师基于课程获取幻灯片
     */
    @Auth(roles = UserType.TEACHER, message = "获取幻灯片列表")
    @GetMapping("/teacher/course/{courseId}")
    public PageResourceResponse<SlideVO> teacherGetSlidesByCourse(LoginUser user,
                                                                  @PathVariable Integer courseId,
                                                                  @RequestParam(required = false, defaultValue = "") String key,
                                                                  @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        List<SlideVO> slideVOList = slideService.teacherGetSlidesByCourse(user, courseId, key, pageable);
        return PageResourceResponse.of(slideVOList, pageable.getPageNumber(), pageable.getPageSize());
    }

    /**
     * 学生基于课程获取幻灯片
     */
    @Auth(roles = UserType.STUDENT, message = "获取幻灯片列表")
    @GetMapping("/student/course/{courseId}")
    public PageResourceResponse<SlideVO> studentGetSlidesByCourse(LoginUser user,
                                                                  @PathVariable Integer courseId,
                                                                  @RequestParam(required = false, defaultValue = "") String key,
                                                                  @PageableDefault(size = Integer.MAX_VALUE) Pageable pageable) {
        List<SlideVO> slideVOList = slideService.studentGetSlidesByCourse(user, courseId, key, pageable);
        return PageResourceResponse.of(slideVOList, pageable.getPageNumber(), pageable.getPageSize());
    }

    /**
     * 获取幻灯片链接
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "获取幻灯片链接")
    @GetMapping("/{slideId}/url")
    public ResourceResponse<String> getSlideUrl(LoginUser user,
                                                @PathVariable Integer slideId) {
        String slideUrl = slideService.getSlideUrl(user, slideId);
        return ResourceResponse.of(slideUrl);
    }
}