package com.kaidi.oa.web;

import com.kaidi.oa.common.ApiException;
import com.kaidi.oa.common.ApiResp;
import com.kaidi.oa.common.NotFoundException;
import com.kaidi.oa.domain.EmergencyDrill;
import com.kaidi.oa.repository.EmergencyDrillRepository;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PatchMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.time.Instant;
import java.time.LocalDate;
import java.util.List;

/**
 * 质安部·应急预案与演练（需求 §2 应急管理）。补深审计 high 缺口：应急预案 + 演练计划与记录 + 评估效果。
 *
 * 状态机：计划 → 已演练（record，记录过程/参演人）→ 已评估（evaluate，记录评估结论/评分/发现问题）。
 * 写口默认受 AuthInterceptor default-deny(ADMIN/APPROVER) 保护。
 */
@RestController
@RequestMapping("/api/oa/emergency-drills")
public class EmergencyDrillController {

    private final EmergencyDrillRepository repo;

    public EmergencyDrillController(EmergencyDrillRepository repo) {
        this.repo = repo;
    }

    @GetMapping
    public ApiResp<List<EmergencyDrill>> list(@RequestParam(required = false) String status,
                                              @RequestParam(required = false) String planType) {
        if (status != null && !status.isBlank()) {
            return ApiResp.ok(repo.findByStatus(status));
        }
        if (planType != null && !planType.isBlank()) {
            return ApiResp.ok(repo.findByPlanType(planType));
        }
        return ApiResp.ok(repo.findAll());
    }

    @GetMapping("/{id}")
    public ApiResp<EmergencyDrill> get(@PathVariable Long id) {
        return ApiResp.ok(repo.findById(id)
                .orElseThrow(() -> new NotFoundException("drill not found: " + id)));
    }

    public record DrillRequest(String code, String planName, String planType, String title,
                               String drillType, String scenario, String dept, String planDate) {
    }

    @PostMapping
    public ApiResp<EmergencyDrill> create(@RequestBody DrillRequest req) {
        if (req.title() == null || req.title().isBlank()) {
            throw new ApiException(400, "演练主题不能为空");
        }
        EmergencyDrill d = new EmergencyDrill();
        d.setCode(req.code() == null || req.code().isBlank() ? "YJ-" + (repo.count() + 1) : req.code());
        d.setPlanName(req.planName());
        d.setPlanType(req.planType() == null || req.planType().isBlank() ? "专项预案" : req.planType());
        d.setTitle(req.title());
        d.setDrillType(req.drillType() == null || req.drillType().isBlank() ? "实战演练" : req.drillType());
        d.setScenario(req.scenario());
        d.setDept(req.dept());
        d.setPlanDate(req.planDate());
        d.setStatus("计划");
        d.setCreatedAt(Instant.now());
        return ApiResp.ok(repo.save(d));
    }

    @PatchMapping("/{id}")
    public ApiResp<EmergencyDrill> update(@PathVariable Long id, @RequestBody DrillRequest req) {
        EmergencyDrill d = repo.findById(id)
                .orElseThrow(() -> new NotFoundException("drill not found: " + id));
        if ("已评估".equals(d.getStatus())) {
            throw new ApiException(409, "已评估演练不可编辑");
        }
        if (req.planName() != null) d.setPlanName(req.planName());
        if (req.planType() != null && !req.planType().isBlank()) d.setPlanType(req.planType());
        if (req.title() != null && !req.title().isBlank()) d.setTitle(req.title());
        if (req.drillType() != null && !req.drillType().isBlank()) d.setDrillType(req.drillType());
        if (req.scenario() != null) d.setScenario(req.scenario());
        if (req.dept() != null) d.setDept(req.dept());
        if (req.planDate() != null) d.setPlanDate(req.planDate());
        return ApiResp.ok(repo.save(d));
    }

    @DeleteMapping("/{id}")
    public ApiResp<Void> delete(@PathVariable Long id) {
        if (!repo.existsById(id)) {
            throw new NotFoundException("drill not found: " + id);
        }
        repo.deleteById(id);
        return ApiResp.ok(null);
    }

    public record RecordRequest(String drillDate, Integer participants, String process) {
    }

    /** 记录演练：计划 → 已演练（记录过程/参演人）。 */
    @PostMapping("/{id}/record")
    public ApiResp<EmergencyDrill> record(@PathVariable Long id, @RequestBody RecordRequest req) {
        EmergencyDrill d = repo.findById(id)
                .orElseThrow(() -> new NotFoundException("drill not found: " + id));
        if (!"计划".equals(d.getStatus())) {
            throw new ApiException(409, "仅计划中的演练可记录（当前：" + d.getStatus() + "）");
        }
        d.setDrillDate(req.drillDate() == null || req.drillDate().isBlank()
                ? LocalDate.now().toString() : req.drillDate());
        d.setParticipants(req.participants());
        d.setProcess(req.process());
        d.setStatus("已演练");
        return ApiResp.ok(repo.save(d));
    }

    public record EvaluateRequest(String evaluation, Integer score, String problems) {
    }

    /** 评估演练：已演练 → 已评估（记录评估结论/评分/发现问题）。 */
    @PostMapping("/{id}/evaluate")
    public ApiResp<EmergencyDrill> evaluate(@PathVariable Long id, @RequestBody EvaluateRequest req) {
        EmergencyDrill d = repo.findById(id)
                .orElseThrow(() -> new NotFoundException("drill not found: " + id));
        if (!"已演练".equals(d.getStatus())) {
            throw new ApiException(409, "仅已演练的演练可评估（当前：" + d.getStatus() + "）");
        }
        if (req.evaluation() == null || req.evaluation().isBlank()) {
            throw new ApiException(400, "评估结论不能为空");
        }
        d.setEvaluation(req.evaluation());
        if (req.score() != null) {
            d.setScore(Math.max(0, Math.min(100, req.score())));
        }
        d.setProblems(req.problems());
        d.setStatus("已评估");
        return ApiResp.ok(repo.save(d));
    }
}