package com.tcm.training.admin.statistics.service;
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import com.tcm.training.admin.statistics.mapper.UserStatisticsMapper;
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import com.tcm.training.admin.statistics.row.UserStatisticsActiveTrendRow;
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import com.tcm.training.admin.statistics.row.UserStatisticsCompositionRow;
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import com.tcm.training.admin.statistics.row.UserStatisticsOverviewRow;
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import com.tcm.training.admin.statistics.row.UserStatisticsRegisterTrendRow;
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import com.tcm.training.admin.statistics.vo.UserStatisticsMemberCompositionVO;
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import com.tcm.training.admin.statistics.vo.UserStatisticsOverviewVO;
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import com.tcm.training.admin.statistics.vo.UserStatisticsTrendItemVO;
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import com.tcm.training.admin.statistics.vo.UserStatisticsVO;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.LocalTime;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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@Service
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public class UserStatisticsAppService {
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private static final String FILTER_ALL = "ALL";
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private static final String FILTER_NORMAL = "NORMAL";
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private static final String FILTER_MEMBER = "MEMBER";
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private final UserStatisticsMapper userStatisticsMapper;
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public UserStatisticsAppService(UserStatisticsMapper userStatisticsMapper) {
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this.userStatisticsMapper = userStatisticsMapper;
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}
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public UserStatisticsVO statistics(String type, LocalDate dateFrom, LocalDate dateTo) {
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DateRange range = normalizeRange(dateFrom, dateTo);
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String normalizedType = normalizeType(type);
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String mapperUserTypeEnum = resolveUserTypeEnum(normalizedType);
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LocalDateTime startTime = range.getStart().atStartOfDay();
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LocalDateTime endTime = LocalDateTime.of(range.getEnd(), LocalTime.MAX);
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UserStatisticsOverviewRow overviewRow = userStatisticsMapper.selectOverview(mapperUserTypeEnum, startTime, endTime);
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List<UserStatisticsRegisterTrendRow> registerRows = userStatisticsMapper.selectRegisterTrend(mapperUserTypeEnum, startTime, endTime);
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List<UserStatisticsActiveTrendRow> activeRows = userStatisticsMapper.selectActiveTrend(mapperUserTypeEnum, startTime, endTime);
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UserStatisticsCompositionRow compositionRow = userStatisticsMapper.selectMemberComposition(mapperUserTypeEnum, startTime, endTime);
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UserStatisticsVO result = new UserStatisticsVO();
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result.setOverview(buildOverview(overviewRow));
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result.setTrend(buildTrend(registerRows, activeRows, range));
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result.setMemberComposition(buildComposition(compositionRow));
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return result;
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}
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private UserStatisticsOverviewVO buildOverview(UserStatisticsOverviewRow row) {
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UserStatisticsOverviewVO overview = new UserStatisticsOverviewVO();
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overview.setRegisteredUserCount(nvl(row == null ? null : row.getRegisteredUserCount()));
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overview.setDoctorRegisteredCount(nvl(row == null ? null : row.getDoctorRegisteredCount()));
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overview.setMemberOpenCount(nvl(row == null ? null : row.getMemberOpenCount()));
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overview.setCoursePurchaseCount(nvl(row == null ? null : row.getCoursePurchaseCount()));
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overview.setLiveWatchClickCount(nvl(row == null ? null : row.getLiveWatchClickCount()));
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overview.setUserActivityRate(buildActivityRate(
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nvl(row == null ? null : row.getActiveEnterUserCount()),
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nvl(row == null ? null : row.getTotalUserCount())
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));
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return overview;
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}
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private UserStatisticsMemberCompositionVO buildComposition(UserStatisticsCompositionRow row) {
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UserStatisticsMemberCompositionVO composition = new UserStatisticsMemberCompositionVO();
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composition.setMonthMemberPurchaseCount(nvl(row == null ? null : row.getMonthMemberPurchaseCount()));
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composition.setQuarterMemberPurchaseCount(nvl(row == null ? null : row.getQuarterMemberPurchaseCount()));
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composition.setCourseMemberUserCount(nvl(row == null ? null : row.getCourseMemberUserCount()));
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return composition;
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}
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private List<UserStatisticsTrendItemVO> buildTrend(List<UserStatisticsRegisterTrendRow> registerRows,
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List<UserStatisticsActiveTrendRow> activeRows,
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DateRange range) {
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Map<LocalDate, UserStatisticsRegisterTrendRow> registerRowMap = new HashMap<LocalDate, UserStatisticsRegisterTrendRow>();
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for (UserStatisticsRegisterTrendRow row : registerRows) {
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registerRowMap.put(row.getStatDate(), row);
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}
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Map<LocalDate, UserStatisticsActiveTrendRow> activeRowMap = new HashMap<LocalDate, UserStatisticsActiveTrendRow>();
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for (UserStatisticsActiveTrendRow row : activeRows) {
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activeRowMap.put(row.getStatDate(), row);
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}
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List<UserStatisticsTrendItemVO> result = new ArrayList<UserStatisticsTrendItemVO>();
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LocalDate cursor = range.getStart();
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while (!cursor.isAfter(range.getEnd())) {
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UserStatisticsRegisterTrendRow registerRow = registerRowMap.get(cursor);
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UserStatisticsActiveTrendRow activeRow = activeRowMap.get(cursor);
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UserStatisticsTrendItemVO item = new UserStatisticsTrendItemVO();
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item.setDate(cursor.toString());
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item.setRegisteredUserCount(nvl(registerRow == null ? null : registerRow.getRegisteredUserCount()));
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item.setDoctorRegisteredCount(nvl(registerRow == null ? null : registerRow.getDoctorRegisteredCount()));
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item.setActiveEnterUserCount(nvl(activeRow == null ? null : activeRow.getActiveEnterUserCount()));
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result.add(item);
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cursor = cursor.plusDays(1);
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}
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return result;
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}
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private BigDecimal buildActivityRate(Long activeEnterUserCount, Long totalUserCount) {
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if (totalUserCount == null || totalUserCount <= 0) {
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return BigDecimal.ZERO;
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}
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return BigDecimal.valueOf(activeEnterUserCount == null ? 0L : activeEnterUserCount)
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.multiply(BigDecimal.valueOf(100))
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.divide(BigDecimal.valueOf(totalUserCount), 2, RoundingMode.HALF_UP);
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}
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private String normalizeType(String type) {
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String normalized = trimToNull(type);
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if (normalized == null) {
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return FILTER_ALL;
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}
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if (FILTER_ALL.equals(normalized) || FILTER_NORMAL.equals(normalized) || FILTER_MEMBER.equals(normalized)) {
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return normalized;
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}
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throw new IllegalArgumentException("用户类型不合法");
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}
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private String resolveUserTypeEnum(String normalizedType) {
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if (FILTER_ALL.equals(normalizedType)) {
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return null;
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}
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return normalizedType;
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}
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private DateRange normalizeRange(LocalDate dateFrom, LocalDate dateTo) {
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LocalDate start = dateFrom;
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LocalDate end = dateTo;
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if (start == null && end == null) {
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start = LocalDate.now();
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end = start;
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} else if (start == null) {
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start = end;
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} else if (end == null) {
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end = start;
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}
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if (start.isAfter(end)) {
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throw new IllegalArgumentException("开始日期不能晚于结束日期");
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}
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return new DateRange(start, end);
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}
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private Long nvl(Long value) {
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return value == null ? 0L : value;
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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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private static class DateRange {
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private final LocalDate start;
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private final LocalDate end;
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private DateRange(LocalDate start, LocalDate end) {
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this.start = start;
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this.end = end;
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}
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private LocalDate getStart() {
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return start;
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}
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private LocalDate getEnd() {
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return end;
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}
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}
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}
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