package com.healthcare.ohctech.service.impl;

import com.healthcare.ohctech.dto.FoodMasterDto;
import com.healthcare.ohctech.entity.FoodMaster;
import com.healthcare.ohctech.entity.UnitMaster;
import com.healthcare.ohctech.repository.FoodMasterRepo;
import com.healthcare.ohctech.repository.UnitMasterRepo;
import com.healthcare.ohctech.service.FoodMasterService;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;

@Service
public class FoodMasterServiceImpl implements FoodMasterService {

    private final FoodMasterRepo foodMasterRepo;

    private final UnitMasterRepo unitMasterRepo;

    public FoodMasterServiceImpl(FoodMasterRepo foodMasterRepo,UnitMasterRepo unitMasterRepo) {
        this.foodMasterRepo = foodMasterRepo;
        this.unitMasterRepo = unitMasterRepo;
    }

    @Override
    public FoodMaster getFoodById(Long foodId) {
        return foodMasterRepo.findById(foodId)
                .orElseThrow(() -> new RuntimeException("Food not found for ID: " + foodId));
    }

    @Override
    public Page<FoodMaster> getAllFoods(Pageable pageable) {
        return foodMasterRepo.findAll(pageable);
    }

    @Override
    public void addFood(FoodMasterDto foodMasterDto, Long userId) {
        FoodMaster foodMaster = new FoodMaster();
        mapDtoToEntity(foodMaster, foodMasterDto);
        foodMaster.setModifiedBy(userId);
        foodMasterRepo.save(foodMaster);
    }

    @Override
    public void updateFood(FoodMasterDto foodMasterDto, Long userId) {
        Long foodId = foodMasterDto.id();
        FoodMaster foodMaster = foodMasterRepo.findById(foodId)
                .orElseThrow(() -> new RuntimeException("Food not found for ID: " + foodId));
        mapDtoToEntity(foodMaster, foodMasterDto);
        foodMaster.setModifiedBy(userId);
        foodMasterRepo.save(foodMaster);
    }

    @Override
    public void deleteFood(Long foodId) {
        FoodMaster foodMaster = foodMasterRepo.findById(foodId)
                .orElseThrow(() -> new RuntimeException("Food not found for ID: " + foodId));
        foodMasterRepo.delete(foodMaster);
    }

    private void mapDtoToEntity(FoodMaster foodMaster, FoodMasterDto foodMasterDto) {
        foodMaster.setFoodName(foodMasterDto.foodName());
        foodMaster.setFoodCode(foodMasterDto.foodCode());

        UnitMaster unitMaster = unitMasterRepo.findById(foodMasterDto.unitId())
                .orElseThrow(() -> new RuntimeException("Unit not found for ID: " + foodMasterDto.unitId()));
        foodMaster.setUnitMaster(unitMaster);

        foodMaster.setBaseQuantity(foodMasterDto.baseQuantity());
        foodMaster.setRemark(foodMasterDto.remark());
    }
}