package com.rongyichuang.review.resolver;

import com.rongyichuang.common.util.UserContextUtil;
import com.rongyichuang.review.dto.response.ReviewProjectPageResponse;
import com.rongyichuang.review.dto.response.ReviewProjectResponse;
import com.rongyichuang.review.dto.response.ReviewStatisticsResponse;
import com.rongyichuang.review.dto.response.ReviewExportResponse;
import com.rongyichuang.review.dto.response.ReviewExportJobStatus;
import com.rongyichuang.review.service.ReviewService;
import com.rongyichuang.review.service.ReviewExportService;
import com.rongyichuang.review.service.ReviewExportJobService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.graphql.data.method.annotation.Argument;
import org.springframework.graphql.data.method.annotation.MutationMapping;
import org.springframework.graphql.data.method.annotation.QueryMapping;
import org.springframework.stereotype.Controller;
import java.util.List;

/**
 * 评审管理GraphQL解析器
 */
@Controller
public class ReviewResolver {

    private static final Logger log = LoggerFactory.getLogger(ReviewResolver.class);

    @Autowired
    private ReviewService reviewService;

    @Autowired
    private UserContextUtil userContextUtil;

    @Autowired
    private ReviewExportService reviewExportService;

    @Autowired
    private ReviewExportJobService reviewExportJobService;

    /**
     * 查询我未评审的项目列表
     */
    @QueryMapping
    public ReviewProjectPageResponse unReviewedProjects(
            @Argument String searchKeyword,
            @Argument int page,
            @Argument int pageSize) {
        log.info("查询我未评审的项目列表，searchKeyword: {}, page: {}, pageSize: {}", searchKeyword, page, pageSize);
        
        Long currentJudgeId = userContextUtil.getCurrentJudgeId();
        if (currentJudgeId == null) {
            throw new RuntimeException("当前用户不是评委，无法查询评审项目");
        }
        
        return reviewService.getUnReviewedProjects(currentJudgeId, searchKeyword, page, pageSize);
    }

    /**
     * 查询我已评审的项目列表
     */
    @QueryMapping
    public ReviewProjectPageResponse reviewedProjects(
            @Argument String searchKeyword,
            @Argument int page,
            @Argument int pageSize) {
        log.info("查询我已评审的项目列表，searchKeyword: {}, page: {}, pageSize: {}", searchKeyword, page, pageSize);
        
        Long currentJudgeId = userContextUtil.getCurrentJudgeId();
        if (currentJudgeId == null) {
            throw new RuntimeException("当前用户不是评委，无法查询评审项目");
        }
        
        return reviewService.getReviewedProjects(currentJudgeId, searchKeyword, page, pageSize);
    }

    /**
     * 查询学员未评审的项目列表
     */
    @QueryMapping
    public ReviewProjectPageResponse studentUnReviewedProjects(
            @Argument String searchKeyword,
            @Argument int page,
            @Argument int pageSize) {
        log.info("查询学员未评审的项目列表，searchKeyword: {}, page: {}, pageSize: {}", searchKeyword, page, pageSize);
        
        Long currentJudgeId = userContextUtil.getCurrentJudgeId();
        if (currentJudgeId == null) {
            throw new RuntimeException("当前用户不是评委，无法查询评审项目");
        }
        
        return reviewService.getStudentUnReviewedProjects(currentJudgeId, searchKeyword, page, pageSize);
    }

    /**
     * 查询评审统计信息
     */
    @QueryMapping
    public ReviewStatisticsResponse reviewStatistics() {
        log.info("查询评审统计信息");
        
        Long currentJudgeId = userContextUtil.getCurrentJudgeId();
        if (currentJudgeId == null) {
            throw new RuntimeException("当前用户不是评委，无法查询评审统计");
        }
        
        return reviewService.getReviewStatistics(currentJudgeId);
    }

    /**
     * 导出评审ZIP，返回下载链接
     */
    @MutationMapping
    public ReviewExportResponse exportReviewZip(@Argument Long activityId, @Argument List<Long> stageIds) {
        log.info("导出评审ZIP，activityId: {}, stageIds: {}", activityId, stageIds);
        // 权限校验：仅员工（管理员/主办方）可执行导出
        if (!userContextUtil.isCurrentUserEmployee()) {
            log.warn("导出评审ZIP被拒绝，当前用户无员工权限，activityId: {}", activityId);
            return new ReviewExportResponse(false, null, "当前用户无权限导出评审数据");
        }

        return reviewExportService.exportReviewZip(activityId, stageIds);
    }

    /**
     * 异步导出：启动评审导出任务，返回任务ID
     */
    @MutationMapping
    public String startReviewExportJob(@Argument Long activityId, @Argument List<Long> stageIds) {
        log.info("启动评审导出任务，activityId: {}, stageIds: {}", activityId, stageIds);
        if (!userContextUtil.isCurrentUserEmployee()) {
            log.warn("启动评审导出任务被拒绝，当前用户无员工权限，activityId: {}", activityId);
            return null;
        }
        return reviewExportJobService.startJob(activityId, stageIds);
    }

    /**
     * 查询导出任务状态
     */
    @QueryMapping
    public ReviewExportJobStatus getReviewExportJobStatus(@Argument String jobId) {
        return reviewExportJobService.getStatus(jobId);
    }
}