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/**
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* MotherShip 结账选价 / FreightProtect 货值校验
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*/
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export type MsCoverageKind = "basic" | "freight_protect";
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export type MsCheckoutSelection = {
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preferredCarrier: string;
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coverage: MsCoverageKind;
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cargoValueUsd?: number;
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};
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/** 返回中文错误；null = 通过 */
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export function validateMsCheckoutSelection(
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input: MsCheckoutSelection,
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): string | null {
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const carrier = input.preferredCarrier?.trim();
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if (!carrier) return "请选择承运商";
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if (carrier.length > 128) return "承运商名称过长";
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if (input.coverage !== "basic" && input.coverage !== "freight_protect") {
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return "保障方案无效";
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}
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if (input.coverage === "freight_protect") {
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const v = Number(input.cargoValueUsd);
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if (!Number.isFinite(v) || v <= 0) {
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return "选择 FreightProtect 时请填写大于 0 的货物价值（美元）";
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}
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if (v > 1_000_000) {
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return "货物价值超出允许范围";
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}
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}
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return null;
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}
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/** 输入框清洗：允许美元小数（最多两位），并兼容输入过程中的尾随小数点 */
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export function sanitizeCargoValueUsdInput(raw: string): string {
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let cleaned = raw.replace(/[$,\s]/g, "").replace(/[^\d.]/g, "");
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const firstDot = cleaned.indexOf(".");
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if (firstDot >= 0) {
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cleaned =
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cleaned.slice(0, firstDot + 1) +
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cleaned.slice(firstDot + 1).replace(/\./g, "");
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}
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const m = cleaned.match(/^(\d*)(\.?)(\d{0,2})/);
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if (!m) return "";
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return `${m[1] ?? ""}${m[2] ?? ""}${m[3] ?? ""}`;
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}
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/** 解析货值（美元）；支持小数，四舍五入到分 */
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export function parseCargoValueUsd(raw: string): number | null {
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const cleaned = raw.replace(/[$,\s]/g, "").trim();
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if (!cleaned || cleaned === ".") return null;
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const n = Number(cleaned);
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if (!Number.isFinite(n) || n <= 0) return null;
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const cents = Math.round(n * 100) / 100;
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if (!Number.isFinite(cents) || cents <= 0) return null;
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return cents;
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}
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