import type { ShipmentRow } from "@/types/mail";
import { mapChannel } from "@/services/parse/channel-map";

const FBA_CODES = [
  "ABQ2", "FTW1", "ONT8", "LAX9", "SCK4", "PHX7", "DFW7", "IND9", "TEB9", "BOS7",
];
const CHANNELS = ["卡派", "UPS", "FEDEX", "DHL", "自提", "未知渠道XYZ"];

function pad(n: number, w = 6) {
  return String(n).padStart(w, "0");
}

/** 单元测试用卡派行生成器（不进业务库） */
export function generateM2Shipments(): ShipmentRow[] {
  const rows: ShipmentRow[] = [];
  const firstTwo: Array<Partial<ShipmentRow>> = [
    {
      F_FBACode: "ABQ2",
      F_Transporter: "TRUCK",
      F_CTNS: 1,
      F_FBAID: "FBA19G5XJLV4",
      F_ReferenceId: "3NHUDF7E",
      F_ShipmentID: "BAZUS001799251",
      F_CBM: 0.09,
      F_Weight: 10.69,
      F_Remark: "转POC2",
      channel_raw: "卡派",
    },
    {
      F_FBACode: "FTW1",
      F_Transporter: "TRUCK",
      F_CTNS: 4,
      F_FBAID: "FBA19GLHTHQ2",
      F_ReferenceId: "5ELVT8ED",
      F_ShipmentID: "",
      F_CBM: 0.21,
      F_Weight: 85.08,
      channel_raw: "卡派",
    },
  ];

  for (let i = 0; i < 327; i++) {
    const row_index = i + 1;
    if (i < 2) {
      rows.push({ row_index, row_status: "VALID", ...firstTwo[i] });
      continue;
    }
    const isInvalid = i % 40 === 0;
    const rawChannel = CHANNELS[i % CHANNELS.length];
    const mapped = mapChannel(rawChannel);
    const code = FBA_CODES[i % FBA_CODES.length];
    const ctns = isInvalid ? 0 : (i % 8) + 1;
    const warnings: string[] = [];
    if (mapped.unmapped && !isInvalid) warnings.push("CHANNEL_UNMAPPED");

    rows.push({
      row_index,
      row_status: isInvalid ? "INVALID" : "VALID",
      invalid_reasons: isInvalid ? ["CTNS<=0 或仓库ID缺失"] : undefined,
      warnings: warnings.length ? warnings : undefined,
      F_FBACode: isInvalid && i % 80 === 0 ? "" : code,
      F_Transporter: mapped.transporter || undefined,
      F_CTNS: ctns,
      F_CBM: Number(((i % 20) * 0.07 + 0.05).toFixed(2)),
      F_Weight: Number(((i % 50) * 2.3 + 5).toFixed(2)),
      F_FBAID: `FBA${pad(1900000 + i, 10)}`,
      F_ReferenceId: `REF${pad(i, 8)}`,
      F_ShipmentID: i % 3 === 0 ? "" : `BAZUS${pad(1799251 + i, 9)}`,
      F_Remark: i % 17 === 0 ? "备注样例" : null,
      channel_raw: rawChannel,
    });
  }
  return rows;
}