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.LabInstrument;
import com.kaidi.oa.repository.LabInstrumentRepository;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
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.util.List;

/**
 * Laboratory center (实验室) instruments and devices. status is one of 在用 /
 * 维修 / 停用 / 待校准, defaulting to 在用 on create. calibrationDate and
 * nextCalibration record the last and next calibration dates.
 */
@RestController
@RequestMapping("/api/oa/lab-instruments")
public class LabInstrumentController {

    private final LabInstrumentRepository instrumentRepo;

    public LabInstrumentController(LabInstrumentRepository instrumentRepo) {
        this.instrumentRepo = instrumentRepo;
    }

    @GetMapping
    public ApiResp<List<LabInstrument>> list(@RequestParam(required = false) String status) {
        List<LabInstrument> list;
        if (status != null && !status.isBlank()) {
            list = instrumentRepo.findByStatus(status);
        } else {
            list = instrumentRepo.findAll();
        }
        return ApiResp.ok(list);
    }

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

    public record CreateLabInstrumentRequest(
            String name, String model, String assetNo, String calibrationDate,
            String nextCalibration, String status, String location, String manager,
            String supplier, String commissionDate,
            Integer calibrationCycleDays, Integer maintenanceCycleDays) {
    }

    @PostMapping
    public ApiResp<LabInstrument> create(@RequestBody CreateLabInstrumentRequest req) {
        if (req.name() == null || req.name().isBlank()) {
            throw new ApiException(400, "name is required");
        }
        LabInstrument i = new LabInstrument();
        i.setName(req.name());
        i.setModel(req.model());
        i.setAssetNo(req.assetNo());
        i.setCalibrationDate(req.calibrationDate());
        i.setNextCalibration(req.nextCalibration());
        i.setStatus(req.status() == null || req.status().isBlank() ? "在用" : req.status());
        i.setLocation(req.location());
        i.setManager(req.manager());
        i.setSupplier(req.supplier());
        i.setCommissionDate(req.commissionDate());
        i.setCalibrationCycleDays(req.calibrationCycleDays());
        i.setMaintenanceCycleDays(req.maintenanceCycleDays());
        i.setCreatedAt(Instant.now());
        return ApiResp.ok(instrumentRepo.save(i));
    }

    /** PUT /{id} -> 编辑实验室仪器; 只覆盖请求体里给出的字段。 */
    @PutMapping("/{id}")
    public ApiResp<LabInstrument> update(@PathVariable Long id, @RequestBody CreateLabInstrumentRequest req) {
        LabInstrument i = instrumentRepo.findById(id)
                .orElseThrow(() -> new NotFoundException("lab instrument not found: " + id));
        if (req.name() != null) {
            if (req.name().isBlank()) {
                throw new ApiException(400, "name is required");
            }
            i.setName(req.name());
        }
        if (req.model() != null) i.setModel(req.model());
        if (req.assetNo() != null) i.setAssetNo(req.assetNo());
        if (req.calibrationDate() != null) i.setCalibrationDate(req.calibrationDate());
        if (req.nextCalibration() != null) i.setNextCalibration(req.nextCalibration());
        if (req.status() != null && !req.status().isBlank()) i.setStatus(req.status());
        if (req.location() != null) i.setLocation(req.location());
        if (req.manager() != null) i.setManager(req.manager());
        if (req.supplier() != null) i.setSupplier(req.supplier());
        if (req.commissionDate() != null) i.setCommissionDate(req.commissionDate());
        if (req.calibrationCycleDays() != null) i.setCalibrationCycleDays(req.calibrationCycleDays());
        if (req.maintenanceCycleDays() != null) i.setMaintenanceCycleDays(req.maintenanceCycleDays());
        return ApiResp.ok(instrumentRepo.save(i));
    }

    /** DELETE /{id} -> 删除实验室仪器。 */
    @DeleteMapping("/{id}")
    public ApiResp<Void> delete(@PathVariable Long id) {
        if (!instrumentRepo.existsById(id)) {
            throw new NotFoundException("lab instrument not found: " + id);
        }
        instrumentRepo.deleteById(id);
        return ApiResp.ok(null);
    }
}