import type { TFunction } from "i18next";
import type { ItemLotTraceResponse } from "@/app/api/itemTracing";
import {
  exportMultiSheetToXlsx,
  type MultiSheetSpec,
} from "@/app/(main)/chart/_components/exportChartToXlsx";
import type { CompiledTraceGraph } from "./compileTraceGraph";
import {
  mergeScopedAdjustments,
  mergeScopedDoDeliveries,
  mergeScopedFailEvents,
  mergeScopedOpenMovements,
  mergeScopedOrigins,
  mergeScopedOutboundUsage,
  mergeScopedPurchaseEvents,
  mergeScopedPutawayEvents,
  mergeScopedQcResults,
  mergeScopedReplenishmentEvents,
  mergeScopedReturnEvents,
  mergeScopedStockTakeEvents,
  mergeScopedTransfers,
} from "./mergeLocationScopedData";
import {
  resolveStockTakeAcceptedQty,
  resolveStockTakeBookQty,
} from "./traceStockTakeUtils";
import {
  createTraceLabelTranslator,
  type TraceLabelTranslator,
} from "./traceLabelUtils";
import { kindLabelKey, phaseLabelKey } from "./traceFlowNodeUtils";
import { buildTracePresentationRows } from "./tracePresentationAdapter";
import { isDoGroupChild } from "./traceDoGroupLayout";
import {
  buildIssueIngredientRows,
  buildIssueStoreRows,
  buildIssueWhereUsedRows,
  formatShopPhone,
  issueStoreItemsLabel,
  issueStoreReason,
  shopNameWithoutCode,
} from "./buildIssueTraceRows";

const NO_DATA = "（無資料 / No records）";

const HISTORY_SHEET_KEYS = [
  "summary",
  "timeline",
  "origins",
  "qc",
  "warehouse",
  "outbound",
  "stockTake",
  "production",
] as const;

const ISSUE_SHEET_KEYS = ["stores", "whereUsed", "ingredients"] as const;

const SHEET_KEYS = [...HISTORY_SHEET_KEYS, ...ISSUE_SHEET_KEYS] as const;

export type ItemLotTraceWorkbook = "history" | "issue";

/** Bilingual workbook text, rewritten to the active site language at export time. */
const EXCEL_PHRASE: Record<string, string> = {
  [NO_DATA]: "excel.noData",
  "Field / 欄位": "excel.col.field",
  "Value / 值": "excel.col.value",
  "Lot No. / 批號": "excel.summary.lotNo",
  "Item Code / 貨品編號": "excel.col.itemCode",
  "Item Name / 品名": "excel.col.itemName",
  "UOM / 單位": "excel.col.uom",
  "Expiry / 效期": "excel.summary.expiry",
  "Production Date / 生產日期": "excel.summary.productionDate",
  "Stock In Date / 入庫日期": "excel.summary.stockInDate",
  "Total Available / 總可用量": "excel.summary.totalAvailable",
  "BOM Direction / BOM 方向": "excel.summary.bomDirection",
  "Issue Excel / 問題清單": "excel.summary.issueExcel",
  "Job Order / 工單": "excel.col.jobOrder",
  "Plan Start / 計劃開工": "excel.summary.planStart",
  "Planned Qty / 計劃產量": "excel.summary.plannedQty",
  "JO Status / 工單狀態": "excel.summary.joStatus",
  "Export Time / 匯出時間": "excel.summary.exportTime",
  "— Warehouse Breakdown / 各倉庫存量 —": "excel.summary.warehouseBreakdown",
  "— Alternate Locations / 其他倉位 —": "excel.summary.alternateLocations",
  "Why / 原因": "excel.col.why",
  "Times Received / 收貨次數": "excel.col.timesReceived",
  "Items / 收到的貨": "excel.col.itemsReceived",
  "Latest / 最近一次": "excel.col.latest",
  "Level / 層級": "excel.col.level",
  "Shop Code / 門市編號": "excel.col.shopCode",
  "Shop Name / 門市名稱": "excel.col.shopName",
  "Contact / 聯絡人": "excel.col.contact",
  "Phone / 電話": "excel.col.phone",
  "Email / 電郵": "excel.col.email",
  "Address / 地址": "excel.col.address",
  "District / 地區": "excel.col.district",
  "Lot / 批號": "excel.col.lot",
  "Qty / 數量": "excel.col.qty",
  "Delivery Order / 送貨單": "excel.col.deliveryOrder",
  "Delivery Note / DN": "excel.col.deliveryNote",
  "Ticket / 票號": "excel.col.ticket",
  "Date/Time / 時間": "excel.col.dateTime",
  "Handler / 經手人": "excel.col.handler",
  "Consumed Item Code / 被用貨品編號": "excel.col.consumedItemCode",
  "Consumed Item / 被用品名": "excel.col.consumedItem",
  "Consumed Lot / 被用批號": "excel.col.consumedLot",
  "Qty Used / 用量": "excel.col.qtyUsed",
  "Produced Item Code / 製成品編號": "excel.col.producedItemCode",
  "Produced Item / 製成品名": "excel.col.producedItem",
  "Produced Lot / 製成批號": "excel.col.producedLot",
  "Produced Qty / 製成數量": "excel.col.producedQty",
  "Kind / 類型": "excel.col.kind",
  "Qty Per Unit / 每單位用量": "excel.col.qtyPerUnit",
  "Pick Order / 提料單": "excel.col.pickOrder",
  "Assigned Step / 對應製程": "excel.col.assignedStep",
  "Picked At / 提料時間": "excel.col.pickedAt",
  "Phase / 階段": "excel.col.phase",
  "Event Type / 事件類型": "excel.col.eventType",
  "Doc No. / 單號": "excel.col.docNo",
  "Ref Type / 來源類型": "excel.col.refType",
  "Ref Type Code": "excel.col.refTypeCode",
  "Warehouse / 倉位": "excel.col.warehouse",
  "Remarks / 備註": "excel.col.remarks",
  "Section / 區塊": "excel.col.section",
  "Inventory Lot Id": "excel.col.inventoryLotId",
  "Type / 類型": "excel.col.type",
  "Type Code": "excel.col.typeCode",
  "Supplier Code / 供應商編號": "excel.col.supplierCode",
  "Supplier / 供應商": "excel.col.supplier",
  "DN No. / 送貨單號": "excel.col.dnNo",
  "Status / 狀態": "excel.col.status",
  "Date / 日期": "excel.col.date",
  "QC Result / 結果": "excel.col.qcResult",
  "QC Type / 品檢類型": "excel.col.qcType",
  "QC Type Code": "excel.col.qcTypeCode",
  "QC Item Code / 品檢項編號": "excel.col.qcItemCode",
  "QC Item / 品檢項": "excel.col.qcItem",
  "Accepted Qty / 抽樣數量": "excel.col.sampleQty",
  "Fail Qty / 不良數量": "excel.col.failQty",
  "Stock In Line Id": "excel.col.stockInLineId",
  "Direction / 方向": "excel.col.direction",
  "From / 來源倉": "excel.col.from",
  "To / 目標倉": "excel.col.to",
  "Usage Type / 類型": "excel.col.usageType",
  "Usage Type Code": "excel.col.usageTypeCode",
  "Conso / 併單": "excel.col.conso",
  "Shop / 門市": "excel.col.shop",
  "Extra / 加單": "excel.col.extra",
  "Replenish / 補貨": "excel.col.replenish",
  "Stock Take Code / 盤點單號": "excel.col.stockTakeCode",
  "Round / 輪次": "excel.col.round",
  "Section / 區域": "excel.col.area",
  "Book Qty / 帳面數量": "excel.col.bookQty",
  "Accepted Qty / 核准數量": "excel.col.approvedQty",
  "Variance Qty / 差異數量": "excel.col.varianceQty",
  "Approver / 核准人": "excel.col.approver",
  "Stock Taker / 初盤人": "excel.col.stockTaker",
  "First Count Qty / 初盤數量": "excel.col.firstCountQty",
  "Second Count Qty / 複盤數量": "excel.col.secondCountQty",
  "Approver Count Qty / 覆盤數量": "excel.col.approverCountQty",
  "Record Status / 紀錄狀態": "excel.col.recordStatus",
  "Step / 步驟": "excel.col.step",
  "Scrap Qty / 損耗數量": "excel.col.scrapQty",
  "Defect Qty / 不良數量": "excel.col.defectQty",
  "Operator / 操作員": "excel.col.operator",
  "Equipment / 設備": "excel.col.equipment",
  "Origin / 來源": "excel.section.origin",
  "Purchase / 採購": "excel.section.purchase",
  "Putaway / 上架": "excel.section.putaway",
  "Transfer / 轉倉": "excel.section.transfer",
  "Adjustment / 庫存調整": "excel.section.adjustment",
  "Opening Stock / 開倉入庫": "excel.section.openingStock",
  "Outbound Usage / 出庫使用": "excel.section.outboundUsage",
  "DO Delivery / 成品出倉": "excel.section.doDelivery",
  "Replenishment / 補貨": "excel.section.replenishment",
  Replenishment: "excel.section.replenishment",
  "Return / 退貨": "excel.section.return",
  "Pick Failure / 揀貨異常": "excel.section.pickFailure",
  "BOM Upstream / BOM 上游": "excel.section.bomUpstream",
  "BOM Downstream / BOM 下游": "excel.section.bomDownstream",
  "BOM Recipe / BOM 配方": "excel.section.bomRecipe",
  "JO Pick / 工單提料": "excel.section.joPick",
  "Production Step / 生產步驟": "excel.section.productionStep",
  "Byproduct / 副產品": "excel.section.byproduct",
  "Lot Relation / 拆批關聯": "excel.section.lotRelation",
};

const sheetTitle = (t: TFunction, key: (typeof SHEET_KEYS)[number]): string =>
  t(`excel.sheet.${key}`).replace(/[\\/*?:[\]]/g, "").trim().slice(0, 31);

const localizeCell = (value: unknown, t: TFunction): unknown => {
  if (typeof value !== "string") return value;
  const phrase = EXCEL_PHRASE[value];
  return phrase ? t(phrase) : value;
};

const localizeRows = (
  rows: Record<string, unknown>[],
  t: TFunction,
): Record<string, unknown>[] =>
  rows.map((row) => {
    const next: Record<string, unknown> = {};
    Object.entries(row).forEach(([key, value]) => {
      const headerKey = EXCEL_PHRASE[key];
      next[headerKey ? t(headerKey) : key] = localizeCell(value, t);
    });
    return next;
  });

export type ItemLotTraceExportLabels = {
  bomDirectionFg: string;
  bomDirectionMaterial: string;
  bomDirectionUnknown: string;
};

const orDash = (v: string | number | null | undefined): string | number => {
  if (v == null) return "—";
  if (typeof v === "string" && !v.trim()) return "—";
  return v;
};

const bomDirectionLabel = (
  direction: string,
  labels: ItemLotTraceExportLabels,
): string => {
  const d = direction.trim().toUpperCase();
  if (d === "FINISHED_GOOD") return labels.bomDirectionFg;
  if (d === "MATERIAL") return labels.bomDirectionMaterial;
  return labels.bomDirectionUnknown;
};

const ensureRows = (
  rows: Record<string, unknown>[],
  emptyTemplate: Record<string, unknown>,
): Record<string, unknown>[] => {
  if (rows.length > 0) return rows;
  const firstKey = Object.keys(emptyTemplate)[0];
  return [{ ...emptyTemplate, ...(firstKey ? { [firstKey]: NO_DATA } : {}) }];
};

const todayYmd = (): string => {
  const d = new Date();
  const y = d.getFullYear();
  const m = String(d.getMonth() + 1).padStart(2, "0");
  const day = String(d.getDate()).padStart(2, "0");
  return `${y}${m}${day}`;
};

const safeFilenamePart = (s: string): string =>
  s.replace(/[\\/:*?"<>|]/g, "_").trim() || "unknown";

export const buildItemLotTraceFilename = (
  data: ItemLotTraceResponse,
  t: TFunction,
  workbook: ItemLotTraceWorkbook = "history",
): string => {
  const item = safeFilenamePart(data.lot.itemCode || "item");
  const lot = safeFilenamePart(data.lot.lotNo || "lot");
  const prefix = safeFilenamePart(
    t(workbook === "issue" ? "excel.issueFilePrefix" : "excel.filePrefix"),
  );
  return `${prefix}_${item}_${lot}_${todayYmd()}`;
};

const summaryEmpty = (): Record<string, unknown> => ({
  "Field / 欄位": "",
  "Value / 值": "",
});

const buildSummarySheet = (
  data: ItemLotTraceResponse,
  labels: ItemLotTraceExportLabels,
  exportAt: string,
  t: TFunction,
): Record<string, unknown>[] => {
  const tr = createTraceLabelTranslator(t);
  const { lot, warehouseLines, joPrelude, alternateLocations, bomTrace } = data;
  const totalAvailable = warehouseLines.reduce(
    (s, w) => s + (w.availableQty ?? 0),
    0,
  );
  const rows: Record<string, unknown>[] = [
    { "Field / 欄位": "Lot No. / 批號", "Value / 值": orDash(lot.lotNo) },
    { "Field / 欄位": "Item Code / 貨品編號", "Value / 值": orDash(lot.itemCode) },
    { "Field / 欄位": "Item Name / 品名", "Value / 值": orDash(lot.itemName) },
    { "Field / 欄位": "UOM / 單位", "Value / 值": orDash(lot.uom) },
    { "Field / 欄位": "Expiry / 效期", "Value / 值": orDash(lot.expiryDate) },
    {
      "Field / 欄位": "Production Date / 生產日期",
      "Value / 值": orDash(lot.productionDate),
    },
    {
      "Field / 欄位": "Stock In Date / 入庫日期",
      "Value / 值": orDash(lot.stockInDate),
    },
    {
      "Field / 欄位": "Total Available / 總可用量",
      "Value / 值": totalAvailable,
    },
    {
      "Field / 欄位": "BOM Direction / BOM 方向",
      "Value / 值": bomDirectionLabel(bomTrace.direction, labels),
    },
    {
      "Field / 欄位": "Issue Excel / 問題清單",
      "Value / 值": t("excel.summary.issueExcelNote"),
    },
  ];

  if (joPrelude) {
    const jo = joPrelude.jobOrder;
    rows.push(
      {
        "Field / 欄位": "Job Order / 工單",
        "Value / 值": orDash(jo.jobOrderCode),
      },
      {
        "Field / 欄位": "Plan Start / 計劃開工",
        "Value / 值": orDash(jo.planStart),
      },
      { "Field / 欄位": "Planned Qty / 計劃產量", "Value / 值": jo.reqQty },
      {
        "Field / 欄位": "JO Status / 工單狀態",
        "Value / 值": orDash(tr.joStatus(jo.status)),
      },
    );
  }

  rows.push(
    { "Field / 欄位": "Export Time / 匯出時間", "Value / 值": exportAt },

    { "Field / 欄位": "", "Value / 值": "" },
    {
      "Field / 欄位": "— Warehouse Breakdown / 各倉庫存量 —",
      "Value / 值": "",
    },
  );

  warehouseLines.forEach((w) => {
    rows.push({
      "Field / 欄位": t("excel.summary.warehouseLine", { code: w.warehouseCode }),
      "Value / 值": t("excel.summary.warehouseQty", {
        inQty: w.inQty,
        outQty: w.outQty,
        available: w.availableQty,
        status: w.status ? tr.lotLineStatus(w.status) : "—",
      }),
    });
  });

  if (alternateLocations.length > 0) {
    rows.push(
      { "Field / 欄位": "", "Value / 值": "" },
      {
        "Field / 欄位": "— Alternate Locations / 其他倉位 —",
        "Value / 值": "",
      },
    );
    alternateLocations.forEach((loc) => {
      rows.push({
        "Field / 欄位": t("excel.summary.inventoryLot", { id: loc.inventoryLotId }),
        "Value / 值": t("excel.summary.locationQty", {
          code: loc.warehouseCode,
          qty: loc.availableQty,
        }),
      });
    });
  }

  return rows.length > 0 ? rows : [summaryEmpty()];
};

const storesEmpty = (): Record<string, unknown> => ({
  "Shop Code / 門市編號": "",
  "Shop Name / 門市名稱": "",
  "Phone / 電話": "",
  "Address / 地址": "",
  "District / 地區": "",
  "Times Received / 收貨次數": "",
  "Qty / 數量": "",
  "UOM / 單位": "",
  "Why / 原因": "",
  "Items / 收到的貨": "",
  "Delivery Order / 送貨單": "",
  "Latest / 最近一次": "",
});

const buildStoresSheet = (
  data: ItemLotTraceResponse,
  t: TFunction,
): Record<string, unknown>[] => {
  const rows = buildIssueStoreRows(data).map((row) => {
    const singleQty = row.qtyByUom.length === 1 ? row.qtyByUom[0] : null;
    return {
      "Shop Code / 門市編號": orDash(row.shopCode),
      "Shop Name / 門市名稱": orDash(shopNameWithoutCode(row.shopCode, row.shopName)),
      "Phone / 電話": formatShopPhone(row.contactNo),
      "Address / 地址": orDash(row.address),
      "District / 地區": orDash(row.district),
      "Times Received / 收貨次數": row.receiptCount,
      // One line per unit so "11" and "1包x2磅" stay paired instead of colliding.
      "Qty / 數量": singleQty
        ? singleQty.qty
        : row.qtyByUom.map((part) => part.qty).join("\n") || "—",
      "UOM / 單位": singleQty
        ? orDash(singleQty.uom)
        : row.qtyByUom.map((part) => part.uom || "—").join("\n") || "—",
      "Why / 原因": issueStoreReason(row, t),
      "Items / 收到的貨": issueStoreItemsLabel(row),
      "Delivery Order / 送貨單": orDash(row.deliveryOrderCodes.join("\n")),
      "Latest / 最近一次": orDash(row.latestTimestamp),
    };
  });
  return ensureRows(rows, storesEmpty());
};

const whereUsedEmpty = (): Record<string, unknown> => ({
  "Level / 層級": "",
  "Consumed Item Code / 被用貨品編號": "",
  "Consumed Item / 被用品名": "",
  "Consumed Lot / 被用批號": "",
  "Qty Used / 用量": "",
  "Job Order / 工單": "",
  "Produced Item Code / 製成品編號": "",
  "Produced Item / 製成品名": "",
  "Produced Lot / 製成批號": "",
  "Produced Qty / 製成數量": "",
  "UOM / 單位": "",
});

const buildWhereUsedSheet = (
  data: ItemLotTraceResponse,
): Record<string, unknown>[] => {
  const rows = buildIssueWhereUsedRows(data).map((row) => ({
    "Level / 層級": row.depth,
    "Consumed Item Code / 被用貨品編號": orDash(row.consumedItemCode),
    "Consumed Item / 被用品名": orDash(row.consumedItemName),
    "Consumed Lot / 被用批號": orDash(row.consumedLotNo),
    "Qty Used / 用量": row.materialQtyUsed,
    "Job Order / 工單": orDash(row.jobOrderCode),
    "Produced Item Code / 製成品編號": orDash(row.producedItemCode),
    "Produced Item / 製成品名": orDash(row.producedItemName),
    "Produced Lot / 製成批號": orDash(row.producedLotNo),
    "Produced Qty / 製成數量": row.producedQty,
    "UOM / 單位": orDash(row.producedUom),
  }));
  return ensureRows(rows, whereUsedEmpty());
};

const ingredientsEmpty = (): Record<string, unknown> => ({
  "Kind / 類型": "",
  "Item Code / 貨品編號": "",
  "Item Name / 品名": "",
  "Lot / 批號": "",
  "Qty / 數量": "",
  "UOM / 單位": "",
  "Qty Per Unit / 每單位用量": "",
  "Job Order / 工單": "",
  "Pick Order / 提料單": "",
  "Assigned Step / 對應製程": "",
  "Picked At / 提料時間": "",
});

const buildIngredientsSheet = (
  data: ItemLotTraceResponse,
  t: TFunction,
): Record<string, unknown>[] => {
  const rows = buildIssueIngredientRows(data).map((row) => ({
    "Kind / 類型":
      row.kind === "RECIPE" ? t("issueIngredientRecipe") : t("issueIngredientActual"),
    "Item Code / 貨品編號": orDash(row.itemCode),
    "Item Name / 品名": orDash(row.itemName),
    "Lot / 批號": orDash(row.lotNo),
    "Qty / 數量": row.qty ?? "",
    "UOM / 單位": orDash(row.uom),
    "Qty Per Unit / 每單位用量": row.qtyPerUnit ?? "",
    "Job Order / 工單": orDash(row.jobOrderCode),
    "Pick Order / 提料單": orDash(row.pickOrderCode),
    "Assigned Step / 對應製程": orDash(row.assignedStepName),
    "Picked At / 提料時間": orDash(row.pickedAt),
  }));
  return ensureRows(rows, ingredientsEmpty());
};

const timelineEmpty = (): Record<string, unknown> => ({
  "Date/Time / 時間": "",
  "Phase / 階段": "",
  "Event Type / 事件類型": "",
  "Doc No. / 單號": "",
  "Ref Type / 來源類型": "",
  "Ref Type Code": "",
  "Qty / 數量": "",
  "UOM / 單位": "",
  "Warehouse / 倉位": "",
  "Handler / 經手人": "",
  "Lot / 批號": "",
  "Remarks / 備註": "",
});

const buildTimelineSheet = (
  compiledGraph: CompiledTraceGraph,
  t: TFunction,
  tr: TraceLabelTranslator,
): Record<string, unknown>[] => {
  const nodes = compiledGraph.layout.nodes
    .filter(
      (n) =>
        n.kind !== "DO_GROUP" && n.kind !== "PICK_GROUP" && !isDoGroupChild(n),
    )
    .slice()
    .sort((a, b) => {
      const ta = a.timestamp ?? "";
      const tb = b.timestamp ?? "";
      if (ta !== tb) return ta.localeCompare(tb);
      return a.sortKey - b.sortKey || a.sequenceIndex - b.sequenceIndex;
    });

  const rows = nodes.map((n) => {
    const handlerDetail = n.details.find(
      (d) =>
        d.label.toLowerCase().includes("handler") ||
        d.label.includes("經手") ||
        d.label.includes("核准") ||
        d.label.includes("盤點"),
    );
    return {
      "Date/Time / 時間": orDash(n.timestamp),
      "Phase / 階段": t(phaseLabelKey(n.phase)),
      "Event Type / 事件類型": t(kindLabelKey(n.kind)),
      "Doc No. / 單號": orDash(n.refCode),
      "Ref Type / 來源類型": tr.refType(n.refType),
      "Ref Type Code": orDash(n.refType),
      "Qty / 數量": n.qty ?? "",
      "UOM / 單位": orDash(n.uom),
      "Warehouse / 倉位": orDash(n.warehouseCode),
      "Handler / 經手人": orDash(
        handlerDetail?.value ?? n.meta?.split(" · ")[0],
      ),
      "Lot / 批號": orDash(n.traceLotNo),
      "Remarks / 備註": orDash(n.subtitle),
    };
  });
  return ensureRows(rows, timelineEmpty());
};

const originsEmpty = (): Record<string, unknown> => ({
  "Section / 區塊": "",
  "Warehouse / 倉位": "",
  "Inventory Lot Id": "",
  "Type / 類型": "",
  "Type Code": "",
  "Doc No. / 單號": "",
  "Supplier Code / 供應商編號": "",
  "Supplier / 供應商": "",
  "DN No. / 送貨單號": "",
  "Qty / 數量": "",
  "Status / 狀態": "",
  "Date / 日期": "",
});

const buildOriginsSheet = (
  data: ItemLotTraceResponse,
  tr: TraceLabelTranslator,
): Record<string, unknown>[] => {
  const originRows = mergeScopedOrigins(data).map((o) => ({
    "Section / 區塊": "Origin / 來源",
    "Warehouse / 倉位": o.scopeWarehouseCode,
    "Inventory Lot Id": o.inventoryLotId,
    "Type / 類型": tr.refType(o.type),
    "Type Code": orDash(o.type),
    "Doc No. / 單號": orDash(o.refCode),
    "Supplier Code / 供應商編號": orDash(o.supplierCode),
    "Supplier / 供應商": orDash(o.supplierName),
    "DN No. / 送貨單號": orDash(o.dnNo),
    "Qty / 數量": o.acceptedQty,
    "Status / 狀態": tr.stockInStatus(o.status),
    "Date / 日期": orDash(o.receiptDate),
  }));

  const purchaseRows = mergeScopedPurchaseEvents(data).map((p) => ({
    "Section / 區塊": "Purchase / 採購",
    "Warehouse / 倉位": p.scopeWarehouseCode,
    "Inventory Lot Id": p.inventoryLotId,
    "Type / 類型": tr.refType("PO"),
    "Type Code": "PO",
    "Doc No. / 單號": orDash(p.purchaseOrderCode),
    "Supplier Code / 供應商編號": orDash(p.supplierCode),
    "Supplier / 供應商": orDash(p.supplierName),
    "DN No. / 送貨單號": "",
    "Qty / 數量": p.orderQty,
    "Status / 狀態": orDash(p.status),
    "Date / 日期": orDash(p.orderDate),
  }));

  return ensureRows([...originRows, ...purchaseRows], originsEmpty());
};

const qcEmpty = (): Record<string, unknown> => ({
  "Warehouse / 倉位": "",
  "Inventory Lot Id": "",
  "QC Result / 結果": "",
  "QC Type / 品檢類型": "",
  "QC Type Code": "",
  "QC Item Code / 品檢項編號": "",
  "QC Item / 品檢項": "",
  "Accepted Qty / 抽樣數量": "",
  "Fail Qty / 不良數量": "",
  "Remarks / 備註": "",
  "Handler / 經手人": "",
  "Date/Time / 時間": "",
  "Stock In Line Id": "",
});

const buildQcSheet = (
  data: ItemLotTraceResponse,
  tr: TraceLabelTranslator,
): Record<string, unknown>[] => {
  const rows = mergeScopedQcResults(data).map((q) => ({
    "Warehouse / 倉位": q.scopeWarehouseCode,
    "Inventory Lot Id": q.inventoryLotId,
    "QC Result / 結果": tr.qcPassed(q.qcPassed),
    "QC Type / 品檢類型": tr.qcType(q.qcType),
    "QC Type Code": orDash(q.qcType),
    "QC Item Code / 品檢項編號": orDash(q.qcItemCode),
    "QC Item / 品檢項": orDash(q.qcItemName || q.qcItemDescription),
    "Accepted Qty / 抽樣數量": q.acceptedQty,
    "Fail Qty / 不良數量": q.failQty,
    "Remarks / 備註": orDash(q.remarks),
    "Handler / 經手人": orDash(q.handledBy),
    "Date/Time / 時間": orDash(q.created),
    "Stock In Line Id": q.stockInLineId,
  }));
  return ensureRows(rows, qcEmpty());
};

const warehouseEmpty = (): Record<string, unknown> => ({
  "Section / 區塊": "",
  "Warehouse / 倉位": "",
  "Inventory Lot Id": "",
  "Direction / 方向": "",
  "Type / 類型": "",
  "Type Code": "",
  "Doc No. / 單號": "",
  "From / 來源倉": "",
  "To / 目標倉": "",
  "Qty / 數量": "",
  "Handler / 經手人": "",
  "Status / 狀態": "",
  "Remarks / 備註": "",
  "Date/Time / 時間": "",
});

const buildWarehouseSheet = (
  data: ItemLotTraceResponse,
  tr: TraceLabelTranslator,
): Record<string, unknown>[] => {
  const putaway = mergeScopedPutawayEvents(data).map((p) => ({
    "Section / 區塊": "Putaway / 上架",
    "Warehouse / 倉位": p.scopeWarehouseCode,
    "Inventory Lot Id": p.inventoryLotId,
    "Direction / 方向": "",
    "Type / 類型": tr.refType(p.refType),
    "Type Code": orDash(p.refType),
    "Doc No. / 單號": orDash(p.refCode),
    "From / 來源倉": "",
    "To / 目標倉": orDash(p.warehouseCode),
    "Qty / 數量": p.qty,
    "Handler / 經手人": orDash(p.handledBy),
    "Status / 狀態": orDash(p.status),
    "Remarks / 備註": "",
    "Date/Time / 時間": orDash(p.timestamp),
  }));

  const transfers = mergeScopedTransfers(data).map((trRow) => ({
    "Section / 區塊": "Transfer / 轉倉",
    "Warehouse / 倉位": trRow.scopeWarehouseCode,
    "Inventory Lot Id": trRow.inventoryLotId,
    "Direction / 方向": "",
    "Type / 類型": tr.refType("TRANSFER"),
    "Type Code": "TRANSFER",
    "Doc No. / 單號": orDash(trRow.transferCode),
    "From / 來源倉": orDash(trRow.fromWarehouse),
    "To / 目標倉": orDash(trRow.toWarehouse),
    "Qty / 數量": trRow.qty,
    "Handler / 經手人": "",
    "Status / 狀態": "",
    "Remarks / 備註": "",
    "Date/Time / 時間": orDash(trRow.timestamp),
  }));

  const adjustments = mergeScopedAdjustments(data).map((a) => ({
    "Section / 區塊": "Adjustment / 庫存調整",
    "Warehouse / 倉位": a.scopeWarehouseCode,
    "Inventory Lot Id": a.inventoryLotId,
    "Direction / 方向": tr.direction(a.direction),
    "Type / 類型": tr.adjustmentType(a.adjustmentType),
    "Type Code": orDash(a.adjustmentType),
    "Doc No. / 單號": orDash(a.refCode),
    "From / 來源倉": "",
    "To / 目標倉": orDash(a.warehouseCode),
    "Qty / 數量": a.qty,
    "Handler / 經手人": orDash(a.handledBy),
    "Status / 狀態": "",
    "Remarks / 備註": orDash(a.reason),
    "Date/Time / 時間": orDash(a.timestamp),
  }));

  const openMoves = mergeScopedOpenMovements(data).map((o) => ({
    "Section / 區塊": "Opening Stock / 開倉入庫",
    "Warehouse / 倉位": o.scopeWarehouseCode,
    "Inventory Lot Id": o.inventoryLotId,
    "Direction / 方向": tr.direction("IN"),
    "Type / 類型": tr.refType("OPEN"),
    "Type Code": "OPEN",
    "Doc No. / 單號": orDash(o.refCode),
    "From / 來源倉": "",
    "To / 目標倉": orDash(o.warehouseCode),
    "Qty / 數量": o.qty,
    "Handler / 經手人": orDash(o.handledBy),
    "Status / 狀態": "",
    "Remarks / 備註": orDash(o.remarks),
    "Date/Time / 時間": orDash(o.timestamp),
  }));

  return ensureRows(
    [...putaway, ...transfers, ...adjustments, ...openMoves],
    warehouseEmpty(),
  );
};

const outboundEmpty = (): Record<string, unknown> => ({
  "Section / 區塊": "",
  "Warehouse / 倉位": "",
  "Inventory Lot Id": "",
  "Usage Type / 類型": "",
  "Usage Type Code": "",
  "Doc No. / 單號": "",
  "Pick Order / 提料單": "",
  "Conso / 併單": "",
  "Job Order / 工單": "",
  "Delivery Order / 送貨單": "",
  "Delivery Note / DN": "",
  "Ticket / 票號": "",
  "Shop / 門市": "",
  "Qty / 數量": "",
  "Handler / 經手人": "",
  "Extra / 加單": "",
  "Replenish / 補貨": "",
  "Remarks / 備註": "",
  "Date/Time / 時間": "",
});

const buildOutboundSheet = (
  data: ItemLotTraceResponse,
  tr: TraceLabelTranslator,
  t: TFunction,
): Record<string, unknown>[] => {
  const usage = mergeScopedOutboundUsage(data).map((u) => ({
    "Section / 區塊": "Outbound Usage / 出庫使用",
    "Warehouse / 倉位": u.scopeWarehouseCode,
    "Inventory Lot Id": u.inventoryLotId,
    "Usage Type / 類型": tr.usageType(u.usageType),
    "Usage Type Code": orDash(u.usageType),
    "Doc No. / 單號": orDash(u.deliveryOrderCode || u.pickOrderCode),
    "Pick Order / 提料單": orDash(u.pickOrderCode),
    "Conso / 併單": orDash(u.consoCode),
    "Job Order / 工單": orDash(u.jobOrderCode),
    "Delivery Order / 送貨單": orDash(u.deliveryOrderCode),
    "Delivery Note / DN": "",
    "Ticket / 票號": "",
    "Shop / 門市": "",
    "Qty / 數量": u.qty,
    "Handler / 經手人": orDash(u.handler),
    "Extra / 加單": "",
    "Replenish / 補貨": "",
    "Remarks / 備註": "",
    "Date/Time / 時間": orDash(u.timestamp),
  }));

  const doRows = mergeScopedDoDeliveries(data).map((d) => ({
    "Section / 區塊": "DO Delivery / 成品出倉",
    "Warehouse / 倉位": d.scopeWarehouseCode,
    "Inventory Lot Id": d.inventoryLotId,
    "Usage Type / 類型": tr.usageType("FG_DELIVERY"),
    "Usage Type Code": "FG_DELIVERY",
    "Doc No. / 單號": orDash(d.deliveryOrderCode),
    "Pick Order / 提料單": orDash(d.pickOrderCode),
    "Conso / 併單": orDash(d.consoCode),
    "Job Order / 工單": "",
    "Delivery Order / 送貨單": orDash(d.deliveryOrderCode),
    "Delivery Note / DN": orDash(d.deliveryNoteCode),
    "Ticket / 票號": orDash(d.ticketNo),
    "Shop / 門市": [d.shopCode, d.shopName].filter(Boolean).join(" · ") || "—",
    "Qty / 數量": d.qty,
    "Handler / 經手人": orDash(d.handler),
    "Extra / 加單": d.isExtra ? t("excel.yes") : "",
    "Replenish / 補貨": d.isReplenish ? t("excel.yes") : "",
    "Remarks / 備註": "",
    "Date/Time / 時間": orDash(d.timestamp),
  }));

  const replenish = mergeScopedReplenishmentEvents(data).map((r) => ({
    "Section / 區塊": "Replenishment / 補貨",
    "Warehouse / 倉位": r.scopeWarehouseCode,
    "Inventory Lot Id": r.inventoryLotId,
    "Usage Type / 類型": "Replenishment",
    "Usage Type Code": "REPLENISH",
    "Doc No. / 單號": orDash(r.replenishmentCode),
    "Pick Order / 提料單": "",
    "Conso / 併單": "",
    "Job Order / 工單": "",
    "Delivery Order / 送貨單": orDash(r.sourceDoCode),
    "Delivery Note / DN": "",
    "Ticket / 票號": "",
    "Shop / 門市": [r.shopCode, r.shopName].filter(Boolean).join(" · ") || "—",
    "Qty / 數量": r.replenishQty,
    "Handler / 經手人": orDash(r.handler),
    "Extra / 加單": "",
    "Replenish / 補貨": t("excel.yes"),
    "Remarks / 備註": orDash(r.reason),
    "Date/Time / 時間": orDash(r.timestamp),
  }));

  const returns = mergeScopedReturnEvents(data).map((r) => ({
    "Section / 區塊": "Return / 退貨",
    "Warehouse / 倉位": r.scopeWarehouseCode,
    "Inventory Lot Id": r.inventoryLotId,
    "Usage Type / 類型": tr.movementType(r.movementType),
    "Usage Type Code": orDash(r.movementType),
    "Doc No. / 單號": orDash(r.refCode),
    "Pick Order / 提料單": "",
    "Conso / 併單": "",
    "Job Order / 工單": "",
    "Delivery Order / 送貨單": "",
    "Delivery Note / DN": "",
    "Ticket / 票號": "",
    "Shop / 門市": "",
    "Qty / 數量": r.qty,
    "Handler / 經手人": orDash(r.handler),
    "Extra / 加單": "",
    "Replenish / 補貨": "",
    "Remarks / 備註": orDash(r.remarks),
    "Date/Time / 時間": orDash(r.timestamp),
  }));

  const fails = mergeScopedFailEvents(data).map((f) => ({
    "Section / 區塊": "Pick Failure / 揀貨異常",
    "Warehouse / 倉位": f.scopeWarehouseCode,
    "Inventory Lot Id": f.inventoryLotId,
    "Usage Type / 類型": tr.failType(f.failType),
    "Usage Type Code": orDash(f.failType),
    "Doc No. / 單號": orDash(f.pickOrderCode),
    "Pick Order / 提料單": orDash(f.pickOrderCode),
    "Conso / 併單": "",
    "Job Order / 工單": "",
    "Delivery Order / 送貨單": "",
    "Delivery Note / DN": "",
    "Ticket / 票號": "",
    "Shop / 門市": "",
    "Qty / 數量": f.qty,
    "Handler / 經手人": orDash(f.handlerName),
    "Extra / 加單": "",
    "Replenish / 補貨": "",
    "Remarks / 備註": orDash(f.category),
    "Date/Time / 時間": orDash(f.recordDate),
  }));

  return ensureRows(
    [...usage, ...doRows, ...replenish, ...returns, ...fails],
    outboundEmpty(),
  );
};

const stockTakeEmpty = (): Record<string, unknown> => ({
  "Warehouse / 倉位": "",
  "Inventory Lot Id": "",
  "Stock Take Code / 盤點單號": "",
  "Round / 輪次": "",
  "Section / 區域": "",
  "Lot / 批號": "",
  "Book Qty / 帳面數量": "",
  "Accepted Qty / 核准數量": "",
  "Variance Qty / 差異數量": "",
  "Approver / 核准人": "",
  "Stock Taker / 初盤人": "",
  "First Count Qty / 初盤數量": "",
  "Second Count Qty / 複盤數量": "",
  "Approver Count Qty / 覆盤數量": "",
  "Record Status / 紀錄狀態": "",
  "Date/Time / 時間": "",
});

const buildStockTakeSheet = (
  data: ItemLotTraceResponse,
): Record<string, unknown>[] => {
  const rows = mergeScopedStockTakeEvents(data).map((e) => {
    const d = e.recordDetail;
    return {
      "Warehouse / 倉位": e.scopeWarehouseCode,
      "Inventory Lot Id": e.inventoryLotId,
      "Stock Take Code / 盤點單號": orDash(e.stockTakeCode),
      "Round / 輪次": orDash(
        e.stockTakeRoundName ??
          (e.stockTakeRoundId != null ? `#${e.stockTakeRoundId}` : ""),
      ),
      "Section / 區域": orDash(e.stockTakeSection),
      "Lot / 批號": orDash(e.lotNo),
      "Book Qty / 帳面數量": resolveStockTakeBookQty(d, e.beforeQty) ?? "",
      "Accepted Qty / 核准數量":
        resolveStockTakeAcceptedQty(d, e.afterQty) ?? "",
      "Variance Qty / 差異數量":
        d?.varianceQty != null ? d.varianceQty : e.varianceQty,
      "Approver / 核准人": orDash(d?.approverName || e.approver),
      "Stock Taker / 初盤人": orDash(d?.stockTakerName),
      "First Count Qty / 初盤數量": d?.pickerFirstQty ?? "",
      "Second Count Qty / 複盤數量": d?.pickerSecondQty ?? "",
      "Approver Count Qty / 覆盤數量": d?.approverQty ?? "",
      "Record Status / 紀錄狀態": orDash(d?.recordStatus),
      "Date/Time / 時間": orDash(e.timestamp),
    };
  });
  return ensureRows(rows, stockTakeEmpty());
};

const productionEmpty = (): Record<string, unknown> => ({
  "Section / 區塊": "",
  "Job Order / 工單": "",
  "Doc No. / 單號": "",
  "Item Code / 貨品編號": "",
  "Lot / 批號": "",
  "Item Name / 品名": "",
  "Step / 步驟": "",
  "Assigned Step / 對應製程": "",
  "Qty / 數量": "",
  "Scrap Qty / 損耗數量": "",
  "Defect Qty / 不良數量": "",
  "UOM / 單位": "",
  "Operator / 操作員": "",
  "Equipment / 設備": "",
  "Status / 狀態": "",
  "Date/Time / 時間": "",
});

const buildProductionSheet = (
  data: ItemLotTraceResponse,
  compiledGraph: CompiledTraceGraph,
  tr: TraceLabelTranslator,
): Record<string, unknown>[] => {
  const rows: Record<string, unknown>[] = [];
  const presentation = buildTracePresentationRows(compiledGraph.nodes, data);

  const upstreamSource = data.joPrelude?.materialInputs?.length
    ? data.joPrelude.materialInputs.map((m) => ({
        jobOrderCode: m.jobOrderCode,
        materialItemCode: m.materialItemCode,
        materialLotNo: m.materialLotNo,
        materialQty: m.materialQty,
        materialUom: m.materialUom,
        assignedStepName: m.assignedStepName,
        pickOrderCode: m.pickOrderCode,
        pickedAt: m.pickedAt,
        materialItemName: m.materialItemName,
      }))
    : data.bomTrace.upstream.map((u) => ({
        jobOrderCode: u.jobOrderCode,
        materialItemCode: u.materialItemCode,
        materialLotNo: u.materialLotNo,
        materialQty: u.materialQty,
        materialUom: "",
        assignedStepName: "",
        pickOrderCode: "",
        pickedAt: null as string | null,
        materialItemName: "",
      }));

  upstreamSource.forEach((m) => {
    rows.push({
      "Section / 區塊": "BOM Upstream / BOM 上游",
      "Job Order / 工單": orDash(m.jobOrderCode),
      "Doc No. / 單號": orDash(m.pickOrderCode),
      "Item Code / 貨品編號": orDash(m.materialItemCode),
      "Lot / 批號": orDash(m.materialLotNo),
      "Item Name / 品名": orDash(m.materialItemName),
      "Step / 步驟": "",
      "Assigned Step / 對應製程": orDash(m.assignedStepName),
      "Qty / 數量": m.materialQty,
      "Scrap Qty / 損耗數量": "",
      "Defect Qty / 不良數量": "",
      "UOM / 單位": orDash(m.materialUom),
      "Operator / 操作員": "",
      "Equipment / 設備": "",
      "Status / 狀態": "",
      "Date/Time / 時間": orDash(m.pickedAt),
    });
  });

  data.bomTrace.downstream.forEach((d) => {
    rows.push({
      "Section / 區塊": "BOM Downstream / BOM 下游",
      "Job Order / 工單": orDash(d.jobOrderCode),
      "Doc No. / 單號": "",
      "Item Code / 貨品編號": orDash(d.finishedItemCode),
      "Lot / 批號": orDash(d.finishedLotNo),
      "Item Name / 品名": "",
      "Step / 步驟": "",
      "Assigned Step / 對應製程": "",
      "Qty / 數量": d.fgQty,
      "Scrap Qty / 損耗數量": "",
      "Defect Qty / 不良數量": "",
      "UOM / 單位": orDash(d.fgUom),
      "Operator / 操作員": "",
      "Equipment / 設備": "",
      "Status / 狀態": "",
      "Date/Time / 時間": "",
    });
  });

  data.bomTrace.bomRecipe.forEach((r) => {
    rows.push({
      "Section / 區塊": "BOM Recipe / BOM 配方",
      "Job Order / 工單": "",
      "Doc No. / 單號": "",
      "Item Code / 貨品編號": orDash(r.materialItemCode),
      "Lot / 批號": "",
      "Item Name / 品名": orDash(r.materialItemName),
      "Step / 步驟": "",
      "Assigned Step / 對應製程": orDash(r.assignedStepName),
      "Qty / 數量": r.qtyPerUnit,
      "Scrap Qty / 損耗數量": "",
      "Defect Qty / 不良數量": "",
      "UOM / 單位": orDash(r.uom),
      "Operator / 操作員": "",
      "Equipment / 設備": "",
      "Status / 狀態": "",
      "Date/Time / 時間": "",
    });
  });

  presentation.joPicks
    .slice()
    .sort((a, b) => (b.pickedAt ?? "").localeCompare(a.pickedAt ?? ""))
    .forEach((p) => {
      rows.push({
        "Section / 區塊": "JO Pick / 工單提料",
        "Job Order / 工單": "",
        "Doc No. / 單號": orDash(p.pickOrderCode),
        "Item Code / 貨品編號": orDash(p.materialItemCode),
        "Lot / 批號": orDash(p.materialLotNo),
        "Item Name / 品名": "",
        "Step / 步驟": "",
        "Assigned Step / 對應製程": orDash(p.assignedStepName),
        "Qty / 數量": p.qty,
        "Scrap Qty / 損耗數量": "",
        "Defect Qty / 不良數量": "",
        "UOM / 單位": orDash(p.uom),
        "Operator / 操作員": "",
        "Equipment / 設備": "",
        "Status / 狀態": "",
        "Date/Time / 時間": orDash(p.pickedAt),
      });
    });

  const productionRows =
    data.productionSteps.length > 0
      ? data.productionSteps
          .slice()
          .sort((a, b) => (a.seqNo ?? 0) - (b.seqNo ?? 0))
          .map((s) => ({
            "Section / 區塊": "Production Step / 生產步驟",
            "Job Order / 工單": orDash(data.joPrelude?.jobOrder.jobOrderCode),
            "Doc No. / 單號": "",
            "Item Code / 貨品編號": orDash(data.lot.itemCode),
            "Lot / 批號": orDash(data.lot.lotNo),
            "Item Name / 品名": orDash(data.lot.itemName),
            "Step / 步驟": orDash(s.stepName),
            "Assigned Step / 對應製程": orDash(s.description),
            "Qty / 數量": s.outputQty,
            "Scrap Qty / 損耗數量": s.scrapQty,
            "Defect Qty / 不良數量": s.defectQty,
            "UOM / 單位": orDash(data.lot.uom),
            "Operator / 操作員": orDash(s.operatorName),
            "Equipment / 設備":
              [s.equipmentCode, s.equipmentName].filter(Boolean).join(" · ") ||
              "—",
            "Status / 狀態": tr.productionStatus(s.status),
            "Date/Time / 時間": orDash(s.endTime || s.startTime),
          }))
      : presentation.production
          .slice()
          .sort((a, b) => (a.seqNo ?? 0) - (b.seqNo ?? 0))
          .map((s) => ({
            "Section / 區塊": "Production Step / 生產步驟",
            "Job Order / 工單": orDash(data.joPrelude?.jobOrder.jobOrderCode),
            "Doc No. / 單號": "",
            "Item Code / 貨品編號": orDash(data.lot.itemCode),
            "Lot / 批號": orDash(s.traceLotNo || data.lot.lotNo),
            "Item Name / 品名": orDash(data.lot.itemName),
            "Step / 步驟": orDash(s.stepName),
            "Assigned Step / 對應製程": orDash(s.description),
            "Qty / 數量": s.outputQty,
            "Scrap Qty / 損耗數量": s.scrapQty,
            "Defect Qty / 不良數量": s.defectQty,
            "UOM / 單位": orDash(data.lot.uom),
            "Operator / 操作員": orDash(s.operatorName),
            "Equipment / 設備": orDash(s.equipmentName || s.equipmentCode),
            "Status / 狀態": orDash(s.status),
            "Date/Time / 時間": orDash(s.endTime || s.startTime),
          }));

  rows.push(...productionRows);

  data.byproductLots.forEach((b) => {
    rows.push({
      "Section / 區塊": "Byproduct / 副產品",
      "Job Order / 工單": orDash(b.jobOrderCode),
      "Doc No. / 單號": "",
      "Item Code / 貨品編號": orDash(b.itemCode),
      "Lot / 批號": orDash(b.lotNo),
      "Item Name / 品名": orDash(b.itemName),
      "Step / 步驟": orDash(b.processStepName),
      "Assigned Step / 對應製程": "",
      "Qty / 數量": b.qty,
      "Scrap Qty / 損耗數量": "",
      "Defect Qty / 不良數量": "",
      "UOM / 單位": orDash(b.uom),
      "Operator / 操作員": "",
      "Equipment / 設備": "",
      "Status / 狀態": "",
      "Date/Time / 時間": orDash(b.producedAt),
    });
  });

  data.lotRelations.forEach((r) => {
    rows.push({
      "Section / 區塊": "Lot Relation / 拆批關聯",
      "Job Order / 工單": "",
      "Doc No. / 單號": orDash(r.relationType),
      "Item Code / 貨品編號": orDash(r.itemCode),
      "Lot / 批號": orDash(r.lotNo),
      "Item Name / 品名": orDash(r.itemName),
      "Step / 步驟": "",
      "Assigned Step / 對應製程": "",
      "Qty / 數量": r.qty,
      "Scrap Qty / 損耗數量": "",
      "Defect Qty / 不良數量": "",
      "UOM / 單位": "",
      "Operator / 操作員": "",
      "Equipment / 設備": "",
      "Status / 狀態": orDash(r.productLotNo),
      "Date/Time / 時間": orDash(r.timestamp),
    });
  });

  return ensureRows(rows, productionEmpty());
};

/** Build one workbook without triggering download (for tests). */
export const buildItemLotTraceSheets = (
  data: ItemLotTraceResponse,
  compiledGraph: CompiledTraceGraph,
  t: TFunction,
  exportLabels: ItemLotTraceExportLabels,
  workbook: ItemLotTraceWorkbook = "history",
  exportAt: string = new Date().toISOString().replace("T", " ").slice(0, 19),
): MultiSheetSpec[] => {
  const tr = createTraceLabelTranslator(t);
  const built: Record<(typeof SHEET_KEYS)[number], Record<string, unknown>[]> = {
    summary: buildSummarySheet(data, exportLabels, exportAt, t),
    stores: buildStoresSheet(data, t),
    whereUsed: buildWhereUsedSheet(data),
    ingredients: buildIngredientsSheet(data, t),
    timeline: buildTimelineSheet(compiledGraph, t, tr),
    origins: buildOriginsSheet(data, tr),
    qc: buildQcSheet(data, tr),
    warehouse: buildWarehouseSheet(data, tr),
    outbound: buildOutboundSheet(data, tr, t),
    stockTake: buildStockTakeSheet(data),
    production: buildProductionSheet(data, compiledGraph, tr),
  };
  const keys = workbook === "issue" ? ISSUE_SHEET_KEYS : HISTORY_SHEET_KEYS;
  return keys.map((key) => ({
    name: sheetTitle(t, key),
    rows: localizeRows(built[key], t),
  }));
};

export const itemLotTraceSheetNames = (
  t: TFunction,
  workbook: ItemLotTraceWorkbook = "history",
): string[] =>
  (workbook === "issue" ? ISSUE_SHEET_KEYS : HISTORY_SHEET_KEYS).map((key) =>
    sheetTitle(t, key),
  );

/** FP-MTMS Version Checklist | Functions Ref. No. 15 | v1.0.1 | 2026-07-20 */
export const exportItemLotTraceXlsx = (
  data: ItemLotTraceResponse,
  compiledGraph: CompiledTraceGraph,
  t: TFunction,
  workbook: ItemLotTraceWorkbook = "history",
): void => {
  const exportLabels: ItemLotTraceExportLabels = {
    bomDirectionFg: t("bomDirectionFG"),
    bomDirectionMaterial: t("bomDirectionMaterial"),
    bomDirectionUnknown: t("bomDirectionUnknown"),
  };
  const sheets = buildItemLotTraceSheets(
    data,
    compiledGraph,
    t,
    exportLabels,
    workbook,
  );
  exportMultiSheetToXlsx(
    sheets,
    buildItemLotTraceFilename(data, t, workbook),
  );
};