package com.vincent.rsf.server.manager.service;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.vincent.rsf.server.common.datasource.DataSourceNames;
import com.vincent.rsf.server.common.datasource.UseDataSource;
import com.vincent.rsf.server.manager.entity.CusBarcodeSyncView;
import com.vincent.rsf.server.manager.mapper.CusBarcodeSyncViewMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import javax.sql.DataSource;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;

/**
 * cus_barcode_sync_view：barcode 即为物料号（含 # 等字符亦原样），对应 man_matnr.code。与 {@link CusItemSyncViewQueryService} 独立。
 * 查询不启事务；{@code NOT_SUPPORTED} 挂起外层事务，避免主库连接占用导致副库路由失效。
 */
@UseDataSource(DataSourceNames.DJ_CLOUD_WMS)
@Service
@Slf4j
public class CusBarcodeSyncViewQueryService {

    @Autowired
    private CusBarcodeSyncViewMapper cusBarcodeSyncViewMapper;

    @Autowired
    @Qualifier("cusItemSyncDataSource")
    private ObjectProvider<DataSource> cusItemSyncDataSourceProvider;

    public String effectiveDataSourceLabel() {
        return cusItemSyncDataSourceProvider.getIfAvailable() != null ? DataSourceNames.DJ_CLOUD_WMS : "none";
    }

    /** 视图 barcode 字段 trim 后即物料编码 */
    public static String matnrCodeFromBarcode(String barcode) {
        return StringUtils.trimToNull(barcode);
    }

    /** 单据物料号与视图 barcode 等值（均为整段物料号） */
    public static boolean rowMatchesOrderMatnr(String orderMatnr, String viewBarcode) {
        String o = StringUtils.trimToNull(orderMatnr);
        String b = matnrCodeFromBarcode(viewBarcode);
        return o != null && o.equals(b);
    }

    public static boolean orderMatnrHitsBarcodeView(String orderMatnr, Collection<Map<String, Object>> viewItems) {
        if (viewItems == null || viewItems.isEmpty()) {
            return false;
        }
        String oc = StringUtils.trimToNull(orderMatnr);
        if (oc == null) {
            return false;
        }
        return viewItems.stream().anyMatch(r -> rowMatchesOrderMatnr(oc, Objects.toString(r.get("barcode"), null)));
    }

    /** 挂起外层事务，查询本身不包事务 */
    @Transactional(propagation = Propagation.NOT_SUPPORTED)
    public List<Map<String, Object>> probeSample(int limit) {
        if (cusItemSyncDataSourceProvider.getIfAvailable() == null) {
            return Collections.emptyList();
        }
        int n = Math.min(50, Math.max(1, limit));
        IPage<CusBarcodeSyncView> page = cusBarcodeSyncViewMapper.selectPage(
                new Page<>(1, n),
                Wrappers.<CusBarcodeSyncView>lambdaQuery()
                        .select(
                                CusBarcodeSyncView::getBarcode,
                                CusBarcodeSyncView::getItemName,
                                CusBarcodeSyncView::getItemSpec,
                                CusBarcodeSyncView::getUnitNo));
        return toViewMaps(page.getRecords());
    }

    @Transactional(propagation = Propagation.NOT_SUPPORTED)
    public List<Map<String, Object>> listByItemNos(Collection<String> itemNos) {
        if (itemNos == null || itemNos.isEmpty()) {
            return Collections.emptyList();
        }
        List<String> codes = itemNos.stream()
                .map(StringUtils::trimToNull)
                .filter(Objects::nonNull)
                .distinct()
                .collect(Collectors.toList());
        if (codes.isEmpty()) {
            return Collections.emptyList();
        }
        if (cusItemSyncDataSourceProvider.getIfAvailable() == null) {
            log.warn("dj-cloud-wms 数据源未配置，跳过 cus_barcode_sync_view");
            return Collections.emptyList();
        }
        List<CusBarcodeSyncView> rows = cusBarcodeSyncViewMapper.selectList(
                Wrappers.<CusBarcodeSyncView>lambdaQuery()
                        .in(CusBarcodeSyncView::getBarcode, codes)
                        .select(
                                CusBarcodeSyncView::getBarcode,
                                CusBarcodeSyncView::getItemName,
                                CusBarcodeSyncView::getItemSpec,
                                CusBarcodeSyncView::getUnitNo));
        return toViewMaps(rows);
    }

    private List<Map<String, Object>> toViewMaps(List<CusBarcodeSyncView> rows) {
        if (rows == null || rows.isEmpty()) {
            return Collections.emptyList();
        }
        return rows.stream().map(this::toViewRowMap).collect(Collectors.toList());
    }

    private Map<String, Object> toViewRowMap(CusBarcodeSyncView row) {
        Map<String, Object> m = new LinkedHashMap<>(4);
        m.put("barcode", row.getBarcode());
        m.put("item_name", row.getItemName());
        m.put("item_spec", row.getItemSpec());
        m.put("unit_no", row.getUnitNo());
        return m;
    }
}