package com.engine.salary.entity.salarysob.bo;

import com.engine.salary.annotation.SalaryFormulaVar;
import com.engine.salary.entity.salaryformula.ExpressFormula;
import com.engine.salary.entity.salaryformula.dto.SalaryFormulaEmployeeDTO;
import com.engine.salary.entity.salaryitem.bo.SalaryItemBO;
import com.engine.salary.entity.salaryitem.po.SalaryItemPO;
import com.engine.salary.entity.salarysob.dto.SalarySobEmpFieldDTO;
import com.engine.salary.entity.salarysob.dto.SalarySobItemAggregateDTO;
import com.engine.salary.entity.salarysob.dto.SalarySobItemDTO;
import com.engine.salary.entity.salarysob.dto.SalarySobItemGroupDTO;
import com.engine.salary.entity.salarysob.po.SalarySobEmpFieldPO;
import com.engine.salary.entity.salarysob.po.SalarySobItemGroupPO;
import com.engine.salary.entity.salarysob.po.SalarySobItemPO;
import com.engine.salary.entity.salarysob.po.SalarySobPO;
import com.engine.salary.util.SalaryEntityUtil;
import com.engine.salary.util.SalaryI18nUtil;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import lombok.AllArgsConstructor;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.math.NumberUtils;

import java.lang.reflect.Field;
import java.util.*;
import java.util.stream.Collectors;

/**
 * 将薪资账套的员工信息、薪资项目副本、薪资项目分类聚合在一起
 * <p>Copyright: Copyright (c) 2022</p>
 * <p>Company: 泛微软件</p>
 *
 * @author qiantao
 * @version 1.0
 **/
@AllArgsConstructor
public class SalarySobItemAggregateBO {

    /**
     * 薪资账套
     */
    private SalarySobPO salarySob;

    /**
     * 薪资账套的员工信息
     */
    private List<SalarySobEmpFieldPO> salarySobEmpFields;

    /**
     * 薪资账套的薪资项目分类
     */
    private List<SalarySobItemGroupPO> salarySobItemGroups;

    /**
     * 薪资账套的薪资项目副本
     */
    private List<SalarySobItemPO> salarySobItems;

    /**
     * 薪资账套的薪资项目副本所用公式详情
     */
    private List<ExpressFormula> expressFormulas;

    /**
     * 薪资账套的薪资项目副本所关联的薪资项目
     */
    private List<SalaryItemPO> salaryItems;

    /**
     * 转换成聚合dto
     *
     * @return
     */
    public SalarySobItemAggregateDTO convert2AggregateDTO() {
        List<SalarySobItemDTO> itemsWithoutGroup = Lists.newArrayList();
        // 薪资账套的薪资项目分类po转换成dto
        List<SalarySobItemGroupDTO> salarySobItemGroupDTOS = salarySobItemGroups.stream()
                .map(e -> SalarySobItemGroupDTO.builder()
                        .id(e.getId())
                        .salarySobId(e.getSalarySobId())
                        .name(e.getName())
                        .sortedIndex(e.getSortedIndex())
                        .build())
                .collect(Collectors.toList());
        Map<Long, SalarySobItemGroupDTO> salarySobItemGroupDTOMap = SalaryEntityUtil.convert2Map(salarySobItemGroupDTOS, SalarySobItemGroupDTO::getId);
        Map<Long, SalaryItemPO> salaryItemMap = SalaryEntityUtil.convert2Map(salaryItems, SalaryItemPO::getId);
        Map<Long, List<SalarySobItemPO>> salarySobItemMap = SalaryEntityUtil.group2Map(salarySobItems, SalarySobItemPO::getSalarySobItemGroupId);
        Map<Long, String> formulaMap = SalaryEntityUtil.convert2Map(expressFormulas, ExpressFormula::getId, ExpressFormula::getFormula);
        // 薪资账套的薪资项目副本po转换成dto
        salarySobItemMap.forEach((k, v) -> {
            List<SalarySobItemDTO> items = Lists.newArrayList();
            for (int i = 0; i < v.size(); i++) {
                SalarySobItemPO salarySobItemPO = v.get(i);
                SalaryItemPO salaryItemPO = salaryItemMap.get(salarySobItemPO.getSalaryItemId());
                items.add(SalarySobItemDTO.builder()
                        .id(salarySobItemPO.getId())
                        .salarySobId(salarySob.getId())
                        .salaryItemGroupId(k)
                        .salaryItemId(salaryItemPO.getId())
                        .name(salaryItemPO.getName())
                        .formulaId(salarySobItemPO.getFormulaId())
                        .formulaContent(formulaMap.getOrDefault(salarySobItemPO.getFormulaId(), ""))
                        .taxDeclarationColumn(SalaryItemBO.buildTaxDeclarationColumn(salaryItemPO.getCode()))
                        .sortedIndex(i)
                        .canEdit(Objects.equals(salaryItemPO.getCanEdit(), 1))
                        .canDelete(Objects.equals(salarySobItemPO.getCanDelete(), 1))
                        .build());
            }
            if (!salarySobItemGroupDTOMap.containsKey(k)) {
                itemsWithoutGroup.addAll(items);
            } else {
                SalarySobItemGroupDTO salarySobItemGroupDTO = salarySobItemGroupDTOMap.get(k);
                salarySobItemGroupDTO.setItems(sortItem(items));
            }
        });
        // 薪资账套的员工信息字段po转换成dto
        List<SalarySobEmpFieldDTO> salarySobEmpFieldDTOS = buildEmpField(salarySobEmpFields);
        return SalarySobItemAggregateDTO.builder()
                .salarySobId(salarySob.getId())
                .empFields(salarySobEmpFieldDTOS)
                .items(sortItem(itemsWithoutGroup))
                .itemGroups(sortItemGroup(salarySobItemGroupDTOMap.values()))
                .build();
    }

    /**
     * 薪资账套的员工信息字段po转换成dto
     *
     * @param salarySobEmpFields 薪资账套的员工信息字段
     * @return
     */
    private List<SalarySobEmpFieldDTO> buildEmpField(Collection<SalarySobEmpFieldPO> salarySobEmpFields) {
        if (CollectionUtils.isEmpty(salarySobEmpFields)) {
            return Collections.emptyList();
        }
        Field[] declaredFields = SalaryFormulaEmployeeDTO.class.getDeclaredFields();
        Map<String, String> empFieldMap = Maps.newHashMapWithExpectedSize(declaredFields.length);
        for (Field declaredField : declaredFields) {
            if (!declaredField.isAnnotationPresent(SalaryFormulaVar.class)) {
                continue;
            }
            SalaryFormulaVar annotation = declaredField.getAnnotation(SalaryFormulaVar.class);
            empFieldMap.put(declaredField.getName(), SalaryI18nUtil.getI18nLabel(annotation.labelId(), annotation.defaultLabel()));
        }
        return salarySobEmpFields.stream()
                .map(e -> SalarySobEmpFieldDTO.builder()
                        .id(e.getId())
                        .salarySobId(e.getSalarySobId())
                        .fieldId(e.getFieldCode())
                        .fieldName(empFieldMap.getOrDefault(e.getFieldCode(), ""))
                        .sortedIndex(e.getSortedIndex())
                        .canDelete(Objects.equals(e.getCanDelete(), NumberUtils.INTEGER_ONE))
                        .build())
                .collect(Collectors.toList());
    }

    /**
     * 薪资账套的薪资项目按照sortedIndex排序
     *
     * @param items 待排序的薪资账套的薪资项目
     * @return
     */
    private List<SalarySobItemDTO> sortItem(Collection<SalarySobItemDTO> items) {
        if (CollectionUtils.isEmpty(items)) {
            return Collections.emptyList();
        }
        return items.stream().sorted(Comparator.comparingInt(SalarySobItemDTO::getSortedIndex)).collect(Collectors.toList());
    }

    /**
     * 薪资账套的薪资项目分类按照sortedIndex排序
     *
     * @param itemGroups 待排序的薪资账套的薪资项目分类
     * @return
     */
    private List<SalarySobItemGroupDTO> sortItemGroup(Collection<SalarySobItemGroupDTO> itemGroups) {
        if (CollectionUtils.isEmpty(itemGroups)) {
            return Collections.emptyList();
        }
        return itemGroups.stream().sorted(Comparator.comparingInt(SalarySobItemGroupDTO::getSortedIndex)).collect(Collectors.toList());
    }
}