package com.tcm.training.admin.app.search.service;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import com.tcm.training.admin.app.search.vo.AppSearchHealthCourseVO;
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import com.tcm.training.admin.app.search.vo.AppSearchHealthPopularizationVO;
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import com.tcm.training.admin.app.search.vo.AppSearchResultVO;
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import com.tcm.training.admin.live.entity.HealthPopularization;
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import com.tcm.training.admin.live.mapper.HealthCourseMapper;
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import com.tcm.training.admin.live.mapper.HealthPopularizationMapper;
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import com.tcm.training.admin.live.vo.HealthCourseListRow;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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/**
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* APP 首页搜索聚合服务。
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*/
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@Service
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public class AppSearchService {
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private static final int STATUS_ENABLED = 1;
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private final HealthCourseMapper healthCourseMapper;
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private final HealthPopularizationMapper healthPopularizationMapper;
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/**
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* 注入 APP 搜索所需依赖。
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*/
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public AppSearchService(HealthCourseMapper healthCourseMapper,
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HealthPopularizationMapper healthPopularizationMapper) {
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this.healthCourseMapper = healthCourseMapper;
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this.healthPopularizationMapper = healthPopularizationMapper;
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}
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/**
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* 按关键词聚合搜索养生课程与健康科普。
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*/
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public AppSearchResultVO search(String keyword) {
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String normalizedKeyword = trimToNull(keyword);
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AppSearchResultVO resultVO = new AppSearchResultVO();
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if (normalizedKeyword == null) {
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resultVO.setCourses(Collections.<AppSearchHealthCourseVO>emptyList());
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resultVO.setPopularizations(Collections.<AppSearchHealthPopularizationVO>emptyList());
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return resultVO;
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}
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resultVO.setCourses(toCourseList(healthCourseMapper.selectAppSearchCourses(normalizedKeyword)));
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resultVO.setPopularizations(toPopularizationList(listPopularizations(normalizedKeyword)));
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return resultVO;
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}
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/**
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* 查询命中的健康科普内容。
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*/
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private List<HealthPopularization> listPopularizations(String keyword) {
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List<HealthPopularization> list = healthPopularizationMapper.selectList(new LambdaQueryWrapper<HealthPopularization>()
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.eq(HealthPopularization::getDeleted, 0)
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.eq(HealthPopularization::getStatus, STATUS_ENABLED)
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.and(wrapper -> wrapper
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.like(HealthPopularization::getTitle, keyword)
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.or()
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.like(HealthPopularization::getContent, keyword)
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.or()
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.like(HealthPopularization::getCreatedBy, keyword))
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.orderByAsc(HealthPopularization::getSort)
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.orderByDesc(HealthPopularization::getId));
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return list == null ? Collections.<HealthPopularization>emptyList() : list;
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}
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/**
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* 将课程搜索结果转换为 APP 搜索页卡片响应。
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*/
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private List<AppSearchHealthCourseVO> toCourseList(List<HealthCourseListRow> rows) {
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if (rows == null || rows.isEmpty()) {
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return Collections.emptyList();
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}
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List<AppSearchHealthCourseVO> result = new ArrayList<AppSearchHealthCourseVO>(rows.size());
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for (HealthCourseListRow row : rows) {
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AppSearchHealthCourseVO courseVO = new AppSearchHealthCourseVO();
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courseVO.setId(row.getId());
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courseVO.setTitle(trimToEmpty(row.getTitle()));
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courseVO.setCoverImage(trimToEmpty(row.getCoverImg()));
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courseVO.setLevelName(trimToEmpty(row.getLevelName()));
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courseVO.setDifficultyName(trimToEmpty(row.getDifficultyName()));
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courseVO.setSalePrice(defaultPrice(row.getSalePrice()));
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courseVO.setLearnUserCount(defaultNumber(row.getLearnUserCount()));
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result.add(courseVO);
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}
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return result;
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}
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/**
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* 将健康科普搜索结果转换为 APP 搜索页卡片响应。
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*/
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private List<AppSearchHealthPopularizationVO> toPopularizationList(List<HealthPopularization> items) {
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if (items == null || items.isEmpty()) {
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return Collections.emptyList();
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}
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List<AppSearchHealthPopularizationVO> result =
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new ArrayList<AppSearchHealthPopularizationVO>(items.size());
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for (HealthPopularization item : items) {
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AppSearchHealthPopularizationVO popularizationVO = new AppSearchHealthPopularizationVO();
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popularizationVO.setId(item.getId());
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popularizationVO.setTitle(trimToEmpty(item.getTitle()));
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popularizationVO.setCoverImage(trimToEmpty(item.getCoverImg()));
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popularizationVO.setContentType(item.getContentType());
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result.add(popularizationVO);
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}
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return result;
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}
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/**
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* 兜底空价格字段。
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*/
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private BigDecimal defaultPrice(BigDecimal value) {
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return value == null ? BigDecimal.ZERO : value;
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}
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/**
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* 兜底空数字字段。
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*/
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private Integer defaultNumber(Integer value) {
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return value == null ? 0 : value;
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}
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/**
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* 将可空文本转换为空字符串。
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*/
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private String trimToEmpty(String value) {
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if (value == null) {
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return "";
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}
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String trimmed = value.trim();
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return trimmed.isEmpty() ? "" : trimmed;
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}
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/**
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* 将可空关键字转换为可搜索文本。
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*/
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private String trimToNull(String value) {
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if (value == null) {
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return null;
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}
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String trimmed = value.trim();
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return trimmed.isEmpty() ? null : trimmed;
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}
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}
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