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.common.PageVo;
import space.anyi.petServiceManagementSystem.server.config.PasswordConfig;
import space.anyi.petServiceManagementSystem.server.dto.room.QueryByPageParams;
import space.anyi.petServiceManagementSystem.server.dto.user.UpdateUserAvatarDto;
import space.anyi.petServiceManagementSystem.server.dto.user.UpdateUserPasswordDto;
import space.anyi.petServiceManagementSystem.server.dto.user.UpdateUserStatusDto;
import space.anyi.petServiceManagementSystem.server.dto.user.UserDto;
import space.anyi.petServiceManagementSystem.server.entity.DewormingRecord;
import space.anyi.petServiceManagementSystem.server.entity.Pet;
import space.anyi.petServiceManagementSystem.server.entity.User;
import space.anyi.petServiceManagementSystem.server.entity.VaccinationRecord;
import space.anyi.petServiceManagementSystem.server.mapper.UserMapper;
import space.anyi.petServiceManagementSystem.server.service.UserService;
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.util.PageUtil;
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 space.anyi.petServiceManagementSystem.server.vo.user.AdminUserDetailVo;
import space.anyi.petServiceManagementSystem.server.vo.user.UserVo;

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

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private PasswordConfig passwordConfig;

    @Autowired
    private PetMapper petMapper;

    @Autowired
    private VaccinationRecordMapper vaccinationRecordMapper;

    @Autowired
    private DewormingRecordMapper dewormingRecordMapper;

    @Override
    public PageVo<UserVo> queryByPage(QueryByPageParams params) {
        int offset = (params.getPageNum() - 1) * params.getPageSize();
        return PageUtil.page(params.getPageNum(), params.getPageSize(),
                () -> userMapper.selectByPage(offset, params.getPageSize(),
                        params.getUsername(), params.getAccount(),
                        params.getRole(), params.getEnable())
                        .stream().map(this::toUserVo).collect(Collectors.toList()),
                () -> userMapper.countByCondition(params.getUsername(), params.getAccount(),
                        params.getRole(), params.getEnable()));
    }

    @Override
    public UserVo queryById(Long id) {
        User user = userMapper.selectById(id);
        return user != null ? toUserVo(user) : null;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean add(UserDto dto) {
        User exist = userMapper.selectByAccount(dto.getAccount());
        if (exist != null) {
            throw new BusinessException("账号已存在");
        }
        User user = new User();
        user.setAccount(dto.getAccount());
        user.setUsername(dto.getUsername());
        user.setPassword(passwordConfig.encrypt(dto.getPassword()));
        user.setEmail(dto.getEmail());
        user.setPhone(dto.getPhone());
        user.setAvatar(dto.getAvatar());
        user.setRole(dto.getRole() != null ? dto.getRole() : "user");
        user.setEnable(dto.getEnable() != null ? dto.getEnable() : 1);
        return userMapper.insert(user) > 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean edit(UserDto dto) {
        User user = new User();
        user.setId(dto.getId());
        user.setUsername(dto.getUsername());
        if (dto.getPassword() != null && !dto.getPassword().isEmpty()) {
            user.setPassword(passwordConfig.encrypt(dto.getPassword()));
        }
        user.setEmail(dto.getEmail());
        user.setPhone(dto.getPhone());
        user.setAvatar(dto.getAvatar());
        user.setRole(dto.getRole());
        user.setEnable(dto.getEnable());
        return userMapper.update(user) > 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public Boolean deleteByIds(List<Long> ids) {
        return userMapper.deleteByIds(ids) > 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateStatus(UpdateUserStatusDto dto) {
        userMapper.updateStatus(dto.getId(), dto.getEnable());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updatePassword(UpdateUserPasswordDto dto) {
        User user = userMapper.selectById(dto.getId());
        if (user == null) {
            throw new BusinessException("用户不存在");
        }
        if (!passwordConfig.matches(dto.getOldPassword(), user.getPassword())) {
            throw new BusinessException("旧密码错误");
        }
        userMapper.updatePassword(dto.getId(), passwordConfig.encrypt(dto.getNewPassword()));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateAvatar(UpdateUserAvatarDto dto) {
        userMapper.updateAvatar(dto.getId(), dto.getAvatar());
    }

    @Override
    public AdminUserDetailVo getAdminDetail(Long id) {
        User user = userMapper.selectById(id);
        if (user == null) {
            throw new BusinessException("用户不存在");
        }
        List<Pet> pets = petMapper.selectByUserId(id);
        List<PetVo> petVos = pets.stream().map(pet -> {
            PetVo petVo = toPetVo(pet);
            petVo.setVaccinations(vaccinationRecordMapper.selectByPetId(pet.getId()).stream()
                    .map(this::toVaccinationVo).collect(Collectors.toList()));
            petVo.setDewormings(dewormingRecordMapper.selectByPetId(pet.getId()).stream()
                    .map(this::toDewormingVo).collect(Collectors.toList()));
            return petVo;
        }).collect(Collectors.toList());

        AdminUserDetailVo detail = new AdminUserDetailVo();
        detail.setUser(toUserVo(user));
        detail.setPets(petVos);
        return detail;
    }

    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;
    }

    private UserVo toUserVo(User user) {
        UserVo vo = new UserVo();
        vo.setId(user.getId());
        vo.setUsername(user.getUsername());
        vo.setAccount(user.getAccount());
        vo.setEmail(user.getEmail());
        vo.setPhone(user.getPhone());
        vo.setAvatar(user.getAvatar());
        vo.setRole(user.getRole());
        vo.setEnable(user.getEnable());
        return vo;
    }
}