"use client";

import { NEXT_PUBLIC_API_URL } from "@/config/api";
import { clientAuthFetch } from "@/app/utils/clientAuthFetch";
import {
  exportMultiSheetToXlsx,
} from "@/app/(main)/chart/_components/exportChartToXlsx";
import { reportExcelT as tx } from "./reportI18n";
import type { TFunction } from "i18next";

export interface BomShopSyncReportSummary {
  totalAttempts?: number;
  success?: number;
  skippedUnchanged?: number;
  failed?: number;
  syncDateStart?: string;
  syncDateEnd?: string;
}

export interface BomShopSyncRow {
  syncLogId?: number;
  syncDateTime?: string;
  bomId?: number;
  bomRoutingCode?: string;
  finishedItemCode?: string;
  finishedItemName?: string;
  m18HeaderCode?: string;
  version?: string;
  m18RecordId?: number;
  syncStatus?: string;
  synced?: boolean;
  m18ApiStatus?: boolean;
  failureReason?: string;
  message?: string;
}

export interface BomShopSyncMaterialRow {
  syncLogId?: number;
  syncDateTime?: string;
  bomId?: number;
  finishedItemCode?: string;
  m18HeaderCode?: string;
  version?: string;
  syncStatus?: string;
  lineNo?: string;
  materialName?: string;
  udfProductM18Id?: number;
  udfBaseUnit?: string;
  udfQty?: number;
  udfSupplierM18Id?: number;
  udfPurchaseUnitM18Id?: number;
}

export interface BomShopSyncReportResponse {
  summary?: BomShopSyncReportSummary;
  syncRows?: BomShopSyncRow[];
  materialRows?: BomShopSyncMaterialRow[];
}

function bomSyncLabels(t?: TFunction) {
  return {
    sheetSync: tx(t, "excel.bomSync.sheetSync", "BOM同步記錄"),
    sheetMaterials: tx(t, "excel.bomSync.sheetMaterials", "BOM物料明細"),
    noData: tx(t, "excel.noData", "（篩選範圍內無資料）"),
    syncTime: tx(t, "excel.bomSync.syncTime", "同步時間"),
    finishedItemCode: tx(t, "excel.bomSync.finishedItemCode", "成品貨號"),
    finishedItemName: tx(t, "excel.bomSync.finishedItemName", "成品名稱"),
    bomRoutingCode: tx(t, "excel.bomSync.bomRoutingCode", "BOM路由編號"),
    version: tx(t, "excel.bomSync.version", "版本"),
    status: tx(t, "excel.bomSync.status", "狀態"),
    failureReason: tx(t, "excel.bomSync.failureReason", "失敗原因"),
    message: tx(t, "excel.bomSync.message", "訊息"),
    lineNo: tx(t, "excel.bomSync.lineNo", "行號"),
    materialName: tx(t, "excel.bomSync.materialName", "物料名稱"),
    uom: tx(t, "excel.bomSync.uom", "單位"),
    qty: tx(t, "excel.bomSync.qty", "用量"),
    statusSuccess: tx(t, "excel.bomSync.statusSuccess", "成功"),
    statusSkipped: tx(t, "excel.bomSync.statusSkipped", "略過(內容未變)"),
    statusFailed: tx(t, "excel.bomSync.statusFailed", "失敗"),
  };
}

function emptySyncSheetRow(
  L: ReturnType<typeof bomSyncLabels>,
  note?: string,
): Record<string, unknown> {
  return {
    [L.syncTime]: note ?? L.noData,
    [L.finishedItemCode]: "",
    [L.finishedItemName]: "",
    [L.bomRoutingCode]: "",
    "M18 BOM Code": "",
    [L.version]: "",
    "M18 Record Id": "",
    [L.status]: "",
    [L.failureReason]: "",
    [L.message]: "",
    "BOM Id": "",
    "Sync Log Id": "",
  };
}

function emptyMaterialSheetRow(
  L: ReturnType<typeof bomSyncLabels>,
  note?: string,
): Record<string, unknown> {
  return {
    [L.syncTime]: note ?? L.noData,
    [L.finishedItemCode]: "",
    "M18 BOM Code": "",
    [L.version]: "",
    [L.status]: "",
    [L.lineNo]: "",
    [L.materialName]: "",
    "M18 Product Id": "",
    [L.uom]: "",
    [L.qty]: "",
    "M18 Supplier Id": "",
    "M18 Purchase Unit Id": "",
    "Sync Log Id": "",
  };
}

export async function fetchBomShopSyncReportData(
  criteria: Record<string, string>,
): Promise<BomShopSyncReportResponse> {
  const queryParams = new URLSearchParams(criteria).toString();
  const url = `${NEXT_PUBLIC_API_URL}/report/bom-shop-sync-history?${queryParams}`;

  const response = await clientAuthFetch(url, {
    method: "GET",
    headers: { Accept: "application/json" },
  });

  if (response.status === 401 || response.status === 403)
    throw new Error("Unauthorized");
  if (!response.ok)
    throw new Error(`HTTP error! status: ${response.status}`);

  return (await response.json()) as BomShopSyncReportResponse;
}

function syncStatusLabel(
  status: string | undefined,
  L: ReturnType<typeof bomSyncLabels>,
): string {
  switch (status) {
    case "SUCCESS":
      return L.statusSuccess;
    case "SKIPPED_UNCHANGED":
      return L.statusSkipped;
    case "FAILED":
      return L.statusFailed;
    default:
      return status ?? "";
  }
}

function toSyncExcelRow(
  r: BomShopSyncRow,
  L: ReturnType<typeof bomSyncLabels>,
): Record<string, unknown> {
  return {
    ...emptySyncSheetRow(L, ""),
    [L.syncTime]: r.syncDateTime ?? "",
    [L.finishedItemCode]: r.finishedItemCode ?? "",
    [L.finishedItemName]: r.finishedItemName ?? "",
    [L.bomRoutingCode]: r.bomRoutingCode ?? "",
    "M18 BOM Code": r.m18HeaderCode ?? "",
    [L.version]: r.version ?? "",
    "M18 Record Id": r.m18RecordId ?? "",
    [L.status]: syncStatusLabel(r.syncStatus, L),
    [L.failureReason]: r.failureReason ?? "",
    [L.message]: r.message ?? "",
    "BOM Id": r.bomId ?? "",
    "Sync Log Id": r.syncLogId ?? "",
  };
}

function toMaterialExcelRow(
  r: BomShopSyncMaterialRow,
  L: ReturnType<typeof bomSyncLabels>,
): Record<string, unknown> {
  return {
    ...emptyMaterialSheetRow(L, ""),
    [L.syncTime]: r.syncDateTime ?? "",
    [L.finishedItemCode]: r.finishedItemCode ?? "",
    "M18 BOM Code": r.m18HeaderCode ?? "",
    [L.version]: r.version ?? "",
    [L.status]: syncStatusLabel(r.syncStatus, L),
    [L.lineNo]: r.lineNo ?? "",
    [L.materialName]: r.materialName ?? "",
    "M18 Product Id": r.udfProductM18Id ?? "",
    [L.uom]: r.udfBaseUnit ?? "",
    [L.qty]: r.udfQty ?? "",
    "M18 Supplier Id": r.udfSupplierM18Id ?? "",
    "M18 Purchase Unit Id": r.udfPurchaseUnitM18Id ?? "",
    "Sync Log Id": r.syncLogId ?? "",
  };
}

export async function generateBomShopSyncReportExcel(
  criteria: Record<string, string>,
  reportTitle: string = "M18 BOM Shop 同步記錄",
  t?: TFunction,
): Promise<void> {
  const L = bomSyncLabels(t);
  const data = await fetchBomShopSyncReportData(criteria);
  const syncRows =
    (data.syncRows ?? []).length > 0
      ? (data.syncRows ?? []).map((r) => toSyncExcelRow(r, L))
      : [emptySyncSheetRow(L)];
  const materialRows =
    (data.materialRows ?? []).length > 0
      ? (data.materialRows ?? []).map((r) => toMaterialExcelRow(r, L))
      : [emptyMaterialSheetRow(L)];

  const start = criteria.syncDateStart;
  const end = criteria.syncDateEnd;
  let datePart: string;
  if (start && end && start === end) {
    datePart = start;
  } else if (start || end) {
    datePart = `${start || ""}_to_${end || ""}`;
  } else {
    datePart = new Date().toISOString().slice(0, 10);
  }
  const filename = `${reportTitle}_${datePart.replace(/[^\d\-_/]/g, "")}`;

  exportMultiSheetToXlsx(
    [
      { name: L.sheetSync, rows: syncRows },
      { name: L.sheetMaterials, rows: materialRows },
    ],
    filename,
  );
}