package com.sb.web.account.service;

import com.sb.web.account.domain.QuickEntry;
import com.sb.web.account.dto.QuickEntryRequest;
import com.sb.web.account.dto.QuickEntryResponse;
import com.sb.web.account.mapper.QuickEntryMapper;
import com.sb.web.common.exception.ApiException;
import lombok.RequiredArgsConstructor;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 자주 쓰는 내역(빠른 등록 템플릿) 서비스 — 사용자별.
 */
@Service
@RequiredArgsConstructor
public class QuickEntryService {

    private final QuickEntryMapper mapper;

    public List<QuickEntryResponse> list(Long memberId) {
        return mapper.findByMember(memberId).stream().map(QuickEntryResponse::from).toList();
    }

    @Transactional
    public QuickEntryResponse create(QuickEntryRequest req, Long memberId) {
        Integer max = mapper.maxSortOrder(memberId);
        QuickEntry e = QuickEntry.builder()
                .memberId(memberId)
                .label(blankToNull(req.getLabel()))
                .type(req.getType())
                .category("EXPENSE".equals(req.getType()) || "INCOME".equals(req.getType()) ? blankToNull(req.getCategory()) : null)
                .amount(req.getAmount())
                .memo(blankToNull(req.getMemo()))
                .walletId(req.getWalletId())
                .sortOrder(max == null ? 0 : max + 1)
                .build();
        mapper.insert(e);
        return QuickEntryResponse.from(mapper.findByIdAndMember(e.getId(), memberId));
    }

    @Transactional
    public void delete(Long id, Long memberId) {
        if (mapper.findByIdAndMember(id, memberId) == null) {
            throw new ApiException(HttpStatus.NOT_FOUND, "자주 쓰는 내역을 찾을 수 없습니다.");
        }
        mapper.delete(id, memberId);
    }

    private String blankToNull(String s) {
        return (s == null || s.isBlank()) ? null : s.trim();
    }
}