package com.jeesite.modules.mes.erp;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.jeesite.common.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * ERP 直接调拨单 BillQuery（STK_TransferDirect）。
 * 固定仅查 HEV / 115 两种物料编码。
 */
@Service
public class ErpTransferDirectService {

	private static final Logger logger = LoggerFactory.getLogger(ErpTransferDirectService.class);
	private static final String FORM_ID = "STK_TransferDirect";
	private static final String BILL_TYPE_FIELD = "FBillTypeID.FNUMBER";
	private static final String MATERIAL_NUMBER_FIELD = "FMaterialId.FNUMBER";
	private static final String DETAIL_FIELD_KEYS = String.join(",",
			"FID",
			"FBILLNO",
			"FDate",
			"FDocumentStatus",
			BILL_TYPE_FIELD,
			"FBillTypeID.FNAME",
			"FStockOrgId.FNUMBER",
			"FStockOrgId.FNAME",
			"FStockOutOrgId.FNUMBER",
			"FStockOutOrgId.FNAME",
			"FBillEntry_FEntryID",
			"FBillEntry_FSeq",
			MATERIAL_NUMBER_FIELD,
			"FMaterialName",
			"FUnitID.FNAME",
			"FQty",
			"FSrcStockId.FNUMBER",
			"FSrcStockId.FNAME",
			"FDestStockId.FNUMBER",
			"FDestStockId.FNAME",
			"FLot.FNUMBER",
			"FSrcBillNo",
			"FOrderNo",
			"FNote");

	private final KingdeeErpClient erpClient;
	private final KingdeeErpProperties erpProperties;

	public ErpTransferDirectService(KingdeeErpClient erpClient, KingdeeErpProperties erpProperties) {
		this.erpClient = erpClient;
		this.erpProperties = erpProperties;
	}

	/**
	 * 分页查询调拨明细分录（仅 HEV / 115 物料）。
	 */
	public List<ErpTransferDirect> findPageList(ErpTransferDirect query, int startRow, int limit) {
		JSONObject data = new JSONObject();
		data.put("FormId", FORM_ID);
		data.put("FieldKeys", DETAIL_FIELD_KEYS);
		data.put("FilterString", buildFilterString(query));
		data.put("OrderString", "FDate DESC,FBILLNO DESC,FBillEntry_FSeq");
		data.put("StartRow", Math.max(startRow, 0));
		data.put("Limit", Math.max(limit, 1));
		logger.info("ERP transfer direct query: {}", data.toJSONString());
		return mapRows(erpClient.billQuery(data));
	}

	/**
	 * 指定调拨单号的全部分录（仍限定 HEV / 115 物料）。
	 */
	public List<ErpTransferDirect> findDetailList(String billNo) {
		if (StringUtils.isBlank(billNo)) {
			return new ArrayList<>();
		}
		ErpTransferDirect query = new ErpTransferDirect();
		query.setBillNoQuery(billNo.trim());
		return findPageList(query, 0, 2000);
	}

	/**
	 * 生产订单下查：优先按源单/订单号/关联内码，再按生产入库批号关联调拨单。
	 * ERP 直接调拨单无 FMoBillNo，与生产订单的关联主要通过生产入库批号（FLot）建立。
	 */
	public List<ErpTransferDirect> findTraceListByMoBillNo(String moBillNo, String moFid, List<String> instockLots) {
		if (StringUtils.isBlank(moBillNo)) {
			return new ArrayList<>();
		}
		Map<String, ErpTransferDirect> merged = new LinkedHashMap<>();
		appendTraceRows(merged, findTraceByDirectLink(moBillNo.trim(), moFid));
		appendTraceRows(merged, findTraceByInstockLots(instockLots));
		return new ArrayList<>(merged.values());
	}

	private void appendTraceRows(Map<String, ErpTransferDirect> merged, List<ErpTransferDirect> rows) {
		if (rows == null || rows.isEmpty()) {
			return;
		}
		for (ErpTransferDirect row : rows) {
			if (row == null || StringUtils.isBlank(row.getId())) {
				continue;
			}
			merged.putIfAbsent(row.getId(), row);
		}
	}

	private List<ErpTransferDirect> findTraceByDirectLink(String moBillNo, String moFid) {
		String escapedMo = escape(moBillNo);
		StringBuilder linkFilter = new StringBuilder("(FSrcBillNo='").append(escapedMo).append("' OR FOrderNo='")
				.append(escapedMo).append("')");
		if (StringUtils.isNotBlank(moFid)) {
			linkFilter.append(" OR FBillEntry_Link_FSBillId=").append(moFid.trim());
		}
		return queryTraceList("(" + linkFilter + ")");
	}

	private List<ErpTransferDirect> findTraceByInstockLots(List<String> instockLots) {
		if (instockLots == null || instockLots.isEmpty()) {
			return new ArrayList<>();
		}
		List<String> normalizedLots = new ArrayList<>();
		for (String lot : instockLots) {
			if (StringUtils.isBlank(lot)) {
				continue;
			}
			String trimmed = lot.trim();
			if (!normalizedLots.contains(trimmed)) {
				normalizedLots.add(trimmed);
			}
		}
		if (normalizedLots.isEmpty()) {
			return new ArrayList<>();
		}
		StringBuilder builder = new StringBuilder("FLot.FNUMBER IN(");
		for (int i = 0; i < normalizedLots.size(); i++) {
			if (i > 0) {
				builder.append(",");
			}
			builder.append("'").append(escape(normalizedLots.get(i))).append("'");
		}
		builder.append(")");
		return queryTraceList(builder.toString());
	}

	private List<ErpTransferDirect> queryTraceList(String traceFilter) {
		if (StringUtils.isBlank(traceFilter)) {
			return new ArrayList<>();
		}
		JSONObject data = new JSONObject();
		data.put("FormId", FORM_ID);
		data.put("FieldKeys", DETAIL_FIELD_KEYS);
		data.put("FilterString", appendAnd(buildTraceBaseFilter(), traceFilter));
		data.put("OrderString", "FDate DESC,FBILLNO DESC,FBillEntry_FSeq");
		data.put("StartRow", 0);
		data.put("Limit", 2000);
		logger.info("ERP transfer direct trace query: {}", data.toJSONString());
		return mapRows(erpClient.billQuery(data));
	}

	private String buildTraceBaseFilter() {
		return buildBaseFilter();
	}

	private List<ErpTransferDirect> mapRows(JSONArray rows) {
		List<ErpTransferDirect> list = new ArrayList<>();
		for (int i = 0; i < rows.size(); i++) {
			list.add(toDetail(rows.getJSONObject(i), i));
		}
		return list;
	}

	private ErpTransferDirect toDetail(JSONObject row, int index) {
		ErpTransferDirect item = new ErpTransferDirect();
		item.setFid(readString(row, "FID"));
		item.setBillNo(readString(row, "FBILLNO", "FBillNo"));
		item.setEntryId(readString(row, "FBillEntry_FEntryID", "FBillEntry_FEntryId"));
		item.setSeq(readString(row, "FBillEntry_FSeq"));
		String rowId = item.getBillNo();
		if (StringUtils.isNotBlank(item.getEntryId())) {
			rowId = rowId + "-" + item.getEntryId();
		} else if (index >= 0) {
			rowId = rowId + "-" + index;
		}
		item.setId(rowId);
		item.setDocumentStatus(readString(row, "FDocumentStatus"));
		item.setDocumentStatusName(documentStatusName(item.getDocumentStatus()));
		item.setDate(formatErpDate(readString(row, "FDate")));
		item.setBillTypeNumber(readString(row, BILL_TYPE_FIELD, "FBillTypeID.FNumber"));
		item.setBillTypeName(readString(row, "FBillTypeID.FNAME", "FBillTypeID.FName"));
		item.setStockOrgNumber(readString(row, "FStockOrgId.FNUMBER", "FStockOrgId.FNumber"));
		item.setStockOrgName(readString(row, "FStockOrgId.FNAME", "FStockOrgId.FName"));
		item.setStockOutOrgNumber(readString(row, "FStockOutOrgId.FNUMBER", "FStockOutOrgId.FNumber"));
		item.setStockOutOrgName(readString(row, "FStockOutOrgId.FNAME", "FStockOutOrgId.FName"));
		item.setMaterialNumber(readString(row, MATERIAL_NUMBER_FIELD, "FMaterialId.FNumber"));
		item.setMaterialName(readString(row, "FMaterialName", "FMaterialId.FNAME", "FMaterialId.FName"));
		item.setUnitName(readString(row, "FUnitID.FNAME", "FUnitId.FNAME", "FUnitId.FName"));
		item.setQty(ErpKingdeeParseUtils.normalizeQtyNullable(row.getBigDecimal("FQty")));
		item.setSrcStockNumber(readString(row, "FSrcStockId.FNUMBER", "FSrcStockId.FNumber"));
		item.setSrcStockName(readString(row, "FSrcStockId.FNAME", "FSrcStockId.FName"));
		item.setDestStockNumber(readString(row, "FDestStockId.FNUMBER", "FDestStockId.FNumber"));
		item.setDestStockName(readString(row, "FDestStockId.FNAME", "FDestStockId.FName"));
		item.setLotNumber(readString(row, "FLot.FNUMBER", "FLot.FNumber"));
		item.setSrcBillNo(trimToEmpty(readString(row, "FSrcBillNo")));
		item.setOrderNo(trimToEmpty(readString(row, "FOrderNo")));
		item.setNote(readString(row, "FNote"));
		return item;
	}

	private String trimToEmpty(String value) {
		return value == null ? "" : value.trim();
	}

	private String buildFilterString(ErpTransferDirect query) {
		String filter = buildBaseFilter();
		if (query == null) {
			return filter;
		}
		if (StringUtils.isNotBlank(query.getBillNoQuery())) {
			filter = appendAnd(filter, "FBILLNO like '%" + escape(query.getBillNoQuery()) + "%'");
		} else if (StringUtils.isNotBlank(query.getBillNo())) {
			filter = appendAnd(filter, "FBILLNO='" + escape(query.getBillNo()) + "'");
		}
		if (StringUtils.isNotBlank(query.getDocumentStatusQuery())) {
			filter = appendAnd(filter, "FDocumentStatus='" + escape(query.getDocumentStatusQuery()) + "'");
		}
		String materialFilter = buildMaterialFilter(query.getMaterialNumberQuery());
		if (StringUtils.isNotBlank(materialFilter)) {
			filter = appendAnd(filter, materialFilter);
		}
		return filter;
	}

	/**
	 * 物料范围：默认固定 HEV + 115；页面可选缩小到其中一个。
	 */
	private String buildMaterialFilter(String materialNumberQuery) {
		if (StringUtils.isNotBlank(materialNumberQuery)) {
			String trimmed = materialNumberQuery.trim();
			if (erpProperties.isAllowedTransferDirectMaterial(trimmed)) {
				return MATERIAL_NUMBER_FIELD + "='" + escape(trimmed) + "'";
			}
		}
		return buildAllowedMaterialInFilter();
	}

	private String buildAllowedMaterialInFilter() {
		List<String> materials = erpProperties.getTransferDirectMaterialNumbers();
		if (materials == null || materials.isEmpty()) {
			return MATERIAL_NUMBER_FIELD + "='8.10.HEV.10.047696'";
		}
		StringBuilder builder = new StringBuilder(MATERIAL_NUMBER_FIELD + " IN(");
		for (int i = 0; i < materials.size(); i++) {
			if (i > 0) {
				builder.append(",");
			}
			builder.append("'").append(escape(materials.get(i))).append("'");
		}
		builder.append(")");
		return builder.toString();
	}

	private String buildBaseFilter() {
		String filter = "";
		if (StringUtils.isNotBlank(erpProperties.getTransferDirectBillType())) {
			filter = BILL_TYPE_FIELD + "='" + escape(erpProperties.getTransferDirectBillType()) + "'";
		}
		return appendAnd(filter, buildStockOrgFilter());
	}

	private String buildStockOrgFilter() {
		if (!erpProperties.isFilterCurrentOrg()) {
			return "";
		}
		if (StringUtils.isNotBlank(erpProperties.getOrgNumber())) {
			return "FStockOrgId.FNUMBER='" + escape(erpProperties.getOrgNumber()) + "'";
		}
		Long currentOrganizationId = erpClient.getCurrentOrganizationId();
		if (currentOrganizationId == null) {
			return "1=1";
		}
		return "FStockOrgId=" + currentOrganizationId;
	}

	private String appendAnd(String left, String right) {
		if (StringUtils.isBlank(left)) {
			return right;
		}
		if (StringUtils.isBlank(right)) {
			return left;
		}
		return left + " AND " + right;
	}

	private String escape(String value) {
		return value == null ? "" : value.trim().replace("'", "''");
	}

	private String readString(JSONObject row, String... keys) {
		return ErpKingdeeParseUtils.readString(row, keys);
	}

	private String formatErpDate(String rawValue) {
		if (StringUtils.isBlank(rawValue)) {
			return "";
		}
		String trimmed = rawValue.trim();
		return trimmed.length() >= 10 ? trimmed.substring(0, 10) : trimmed;
	}

	private String documentStatusName(String status) {
		if ("A".equals(status)) {
			return "创建";
		}
		if ("B".equals(status)) {
			return "审核中";
		}
		if ("C".equals(status)) {
			return "已审核";
		}
		if ("D".equals(status)) {
			return "重新审核";
		}
		return status;
	}
}