package space.anyi.petServiceManagementSystem.server.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import space.anyi.petServiceManagementSystem.server.common.BusinessException;
import space.anyi.petServiceManagementSystem.server.dto.pet.DewormingDto;
import space.anyi.petServiceManagementSystem.server.dto.pet.PetDto;
import space.anyi.petServiceManagementSystem.server.dto.pet.VaccinationDto;
import space.anyi.petServiceManagementSystem.server.entity.DewormingRecord;
import space.anyi.petServiceManagementSystem.server.entity.Pet;
import space.anyi.petServiceManagementSystem.server.entity.VaccinationRecord;
import space.anyi.petServiceManagementSystem.server.mapper.DewormingRecordMapper;
import space.anyi.petServiceManagementSystem.server.mapper.PetMapper;
import space.anyi.petServiceManagementSystem.server.mapper.VaccinationRecordMapper;
import space.anyi.petServiceManagementSystem.server.service.PetService;
import space.anyi.petServiceManagementSystem.server.vo.pet.DewormingVo;
import space.anyi.petServiceManagementSystem.server.vo.pet.PetVo;
import space.anyi.petServiceManagementSystem.server.vo.pet.VaccinationVo;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class PetServiceImpl implements PetService {

    @Autowired
    private PetMapper petMapper;

    @Autowired
    private VaccinationRecordMapper vaccinationRecordMapper;

    @Autowired
    private DewormingRecordMapper dewormingRecordMapper;

    @Override
    public List<PetVo> list(Long userId) {
        return petMapper.selectByUserId(userId).stream()
                .map(this::toPetVo).collect(Collectors.toList());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public PetVo add(PetDto dto, Long userId) {
        Pet pet = new Pet();
        pet.setUserId(userId);
        pet.setName(dto.getName());
        pet.setSpecies(dto.getSpecies());
        pet.setBreed(dto.getBreed());
        pet.setGender(dto.getGender());
        pet.setBirthDate(dto.getBirthDate());
        pet.setWeight(dto.getWeight());
        pet.setAvatar(dto.getAvatar());
        pet.setRemark(dto.getRemark());
        petMapper.insert(pet);
        return toPetVo(pet);
    }

    @Override
    public PetVo getById(Long id, Long userId,String role) {
        Pet pet = petMapper.selectById(id);
        if (pet == null || !pet.getUserId().equals(userId) && !"admin".equals(role)) {
            throw new BusinessException("宠物不存在或无权访问");
        }
        return toPetVo(pet);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean update(Long id, PetDto dto, Long userId) {
        Pet pet = petMapper.selectById(id);
        if (pet == null || !pet.getUserId().equals(userId)) {
            throw new BusinessException("宠物不存在或无权访问");
        }
        pet.setName(dto.getName());
        pet.setSpecies(dto.getSpecies());
        pet.setBreed(dto.getBreed());
        pet.setGender(dto.getGender());
        pet.setBirthDate(dto.getBirthDate());
        pet.setWeight(dto.getWeight());
        pet.setAvatar(dto.getAvatar());
        pet.setRemark(dto.getRemark());
        return petMapper.update(pet) > 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean delete(Long id, Long userId) {
        Pet pet = petMapper.selectById(id);
        if (pet == null || !pet.getUserId().equals(userId)) {
            throw new BusinessException("宠物不存在或无权访问");
        }
        vaccinationRecordMapper.deleteByPetId(id);
        dewormingRecordMapper.deleteByPetId(id);
        return petMapper.deleteById(id) > 0;
    }

    @Override
    public List<VaccinationVo> getVaccinations(Long petId, Long userId) {
        checkPetOwnership(petId, userId);
        return vaccinationRecordMapper.selectByPetId(petId).stream()
                .map(this::toVaccinationVo).collect(Collectors.toList());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public VaccinationVo addVaccination(Long petId, VaccinationDto dto, Long userId) {
        checkPetOwnership(petId, userId);
        VaccinationRecord record = new VaccinationRecord();
        record.setPetId(petId);
        record.setVaccineName(dto.getVaccineName());
        record.setVaccineDate(dto.getVaccineDate());
        record.setHospital(dto.getHospital());
        record.setDoctor(dto.getDoctor());
        record.setRemark(dto.getRemark());
        vaccinationRecordMapper.insert(record);
        return toVaccinationVo(record);
    }

    @Override
    public List<DewormingVo> getDeworming(Long petId, Long userId) {
        checkPetOwnership(petId, userId);
        return dewormingRecordMapper.selectByPetId(petId).stream()
                .map(this::toDewormingVo).collect(Collectors.toList());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public DewormingVo addDeworming(Long petId, DewormingDto dto, Long userId) {
        checkPetOwnership(petId, userId);
        DewormingRecord record = new DewormingRecord();
        record.setPetId(petId);
        record.setDewormingName(dto.getDewormingName());
        record.setDewormingDate(dto.getDewormingDate());
        record.setHospital(dto.getHospital());
        record.setDoctor(dto.getDoctor());
        record.setRemark(dto.getRemark());
        dewormingRecordMapper.insert(record);
        return toDewormingVo(record);
    }

    private void checkPetOwnership(Long petId, Long userId) {
        Pet pet = petMapper.selectById(petId);
        if (pet == null || !pet.getUserId().equals(userId)) {
            throw new BusinessException("宠物不存在或无权访问");
        }
    }

    private PetVo toPetVo(Pet pet) {
        PetVo vo = new PetVo();
        vo.setId(pet.getId());
        vo.setUserId(pet.getUserId());
        vo.setName(pet.getName());
        vo.setSpecies(pet.getSpecies());
        vo.setBreed(pet.getBreed());
        vo.setGender(pet.getGender());
        vo.setBirthDate(pet.getBirthDate());
        vo.setWeight(pet.getWeight());
        vo.setAvatar(pet.getAvatar());
        vo.setRemark(pet.getRemark());
        vo.setCreatedAt(pet.getCreatedAt());
        return vo;
    }

    private VaccinationVo toVaccinationVo(VaccinationRecord r) {
        VaccinationVo vo = new VaccinationVo();
        vo.setId(r.getId());
        vo.setPetId(r.getPetId());
        vo.setVaccineName(r.getVaccineName());
        vo.setVaccineDate(r.getVaccineDate());
        vo.setHospital(r.getHospital());
        vo.setDoctor(r.getDoctor());
        vo.setRemark(r.getRemark());
        vo.setCreatedAt(r.getCreatedAt());
        return vo;
    }

    private DewormingVo toDewormingVo(DewormingRecord r) {
        DewormingVo vo = new DewormingVo();
        vo.setId(r.getId());
        vo.setPetId(r.getPetId());
        vo.setDewormingName(r.getDewormingName());
        vo.setDewormingDate(r.getDewormingDate());
        vo.setHospital(r.getHospital());
        vo.setDoctor(r.getDoctor());
        vo.setRemark(r.getRemark());
        vo.setCreatedAt(r.getCreatedAt());
        return vo;
    }
}