package cn.yinlihupo.service.open.impl;

import cn.yinlihupo.common.exception.BusinessException;
import cn.yinlihupo.domain.dto.DailyReportSyncDTO;
import cn.yinlihupo.domain.entity.Project;
import cn.yinlihupo.domain.entity.ProjectDailyReport;
import cn.yinlihupo.domain.entity.SysUser;
import cn.yinlihupo.domain.vo.OpenProjectVO;
import cn.yinlihupo.mapper.ProjectDailyReportMapper;
import cn.yinlihupo.mapper.ProjectMapper;
import cn.yinlihupo.mapper.ProjectMemberMapper;
import cn.yinlihupo.mapper.SysUserMapper;
import cn.yinlihupo.service.open.OpenApiService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * 开放接口服务实现
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class OpenApiServiceImpl implements OpenApiService {

    private final SysUserMapper sysUserMapper;
    private final ProjectMapper projectMapper;
    private final ProjectMemberMapper projectMemberMapper;
    private final ProjectDailyReportMapper projectDailyReportMapper;

    /**
     * 根据用户标识 (sys_user.username) 查询用户所在的项目列表
     */
    @Override
    public List<OpenProjectVO> getProjectsByUserId(String userId) {
        if (!StringUtils.hasText(userId)) {
            return new ArrayList<>();
        }

        // 1. 先验证用户是否存在
        SysUser user = sysUserMapper.selectByUsername(userId);
        if (user == null) {
            log.warn("[OpenApi] 用户不存在, username={}", userId);
            return new ArrayList<>();
        }

        // 2. 联查用户所在的项目列表（通过 username 关联 sys_user -> project/project_member）
        List<Project> projects = projectMapper.selectProjectsByUsername(userId);
        if (projects == null || projects.isEmpty()) {
            return new ArrayList<>();
        }

        // 3. 转换为 OpenProjectVO 并填充用户角色
        List<OpenProjectVO> result = new ArrayList<>();
        for (Project project : projects) {
            OpenProjectVO vo = new OpenProjectVO();
            vo.setId(project.getId());
            vo.setProjectCode(project.getProjectCode());
            vo.setProjectName(project.getProjectName());
            vo.setProjectType(project.getProjectType());
            vo.setStatus(project.getStatus());
            vo.setPriority(project.getPriority());
            vo.setPlanStartDate(project.getPlanStartDate());
            vo.setPlanEndDate(project.getPlanEndDate());
            vo.setProgress(project.getProgress());

            // 4. 填充用户在该项目的角色
            if (project.getManagerId() != null && project.getManagerId().equals(user.getId())) {
                vo.setMyRole("manager");
            } else {
                String role = projectMemberMapper.selectRoleByUserAndProject(project.getId(), user.getId());
                vo.setMyRole(role);
            }
            result.add(vo);
        }

        log.info("[OpenApi] 查询用户项目列表成功, username={}, 项目数={}", userId, result.size());
        return result;
    }

    /**
     * 同步日报数据到库（带防重设计）
     */
    @Override
    public String syncDailyReport(DailyReportSyncDTO dto) {
        String username = dto.getUserId();

        // 1. 校验用户是否存在
        SysUser user = sysUserMapper.selectByUsername(username);
        if (user == null) {
            log.warn("[OpenApi] 日报同步失败，用户不存在, username={}", username);
            throw new BusinessException("用户不存在: " + username);
        }

        // 2. 校验项目是否存在
        Project project = projectMapper.selectById(dto.getProjectId());
        if (project == null || project.getDeleted() == 1) {
            log.warn("[OpenApi] 日报同步失败，项目不存在, projectId={}", dto.getProjectId());
            throw new BusinessException("项目不存在: " + dto.getProjectId());
        }

        // 3. 防重检查：同一用户同一天同一项目只能提交一条日报
        int count = projectDailyReportMapper.countByUniqueKey(
                dto.getProjectId(), dto.getReportDate(), username);
        if (count > 0) {
            log.warn("[OpenApi] 日报重复提交, projectId={}, reportDate={}, username={}",
                    dto.getProjectId(), dto.getReportDate(), username);
            throw new BusinessException("日报已提交，请勿重复提交（项目ID: "
                    + dto.getProjectId() + "，日期: " + dto.getReportDate() + "）");
        }

        // 4. 入库保存
        ProjectDailyReport report = new ProjectDailyReport();
        report.setProjectId(dto.getProjectId());
        report.setSubmitterUsername(username);
        report.setSubmitterId(user.getId());
        report.setReportDate(dto.getReportDate());
        report.setWorkContent(dto.getWorkContent());
        report.setTomorrowPlan(dto.getTomorrowPlan());
        report.setWorkIntensity(dto.getWorkIntensity());
        report.setNeedHelp(dto.getNeedHelp());
        report.setHelpContent(dto.getHelpContent());

        projectDailyReportMapper.insert(report);

        log.info("[OpenApi] 日报同步成功, projectId={}, reportDate={}, username={}",
                dto.getProjectId(), dto.getReportDate(), username);
        return "日报同步成功";
    }
}