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import type { DisplayUnit, UnitDim, UnitWeight } from "@/lib/frontend/types";
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import {
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cmToIn,
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inToCm,
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kgToLb,
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lbToKg,
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toAxelWholeInches,
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toAxelWholePounds,
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} from "@/modules/quote/unit-converter";
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export function formatCargoInputNumber(value: number): string {
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if (!Number.isFinite(value)) {
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return "";
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}
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const rounded = Math.round(value * 100) / 100;
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return String(rounded);
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}
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export function parseCargoInputNumber(raw: string): number | null {
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const trimmed = raw.trim();
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if (!trimmed) {
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return null;
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}
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const value = Number(trimmed);
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return Number.isFinite(value) ? value : null;
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}
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/** 表单内单值重量换算（保持物理量不变） */
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export function convertWeightInputValue(
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value: number,
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from: UnitWeight,
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to: UnitWeight,
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): number {
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if (from === to) {
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return value;
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}
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const lb = from === "kg" ? kgToLb(value) : value;
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return to === "kg" ? lbToKg(lb) : lb;
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}
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/** 表单内尺寸换算（保持物理量不变） */
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export function convertDimInputValue(
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value: number,
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from: UnitDim,
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to: UnitDim,
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): number {
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if (from === to) {
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return value;
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}
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const inches = from === "cm" ? cmToIn(value) : value;
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return to === "cm" ? inToCm(inches) : inches;
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}
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export function displayUnitToCargoUnits(
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display: DisplayUnit,
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): { weight: UnitWeight; dim: UnitDim } {
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return display === "metric"
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? { weight: "kg", dim: "cm" }
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: { weight: "lb", dim: "in" };
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}
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/** 展示「询价将按 xxx lb」类提示（界面保留用户输入单位，后端向上取整） */
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export function describeWeightEquivalent(
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value: number,
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unit: UnitWeight,
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): string | null {
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if (!Number.isFinite(value) || value <= 0) {
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return null;
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}
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const rawLb = unit === "kg" ? kgToLb(value) : value;
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const queryLb = toAxelWholePounds(rawLb);
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if (unit === "kg") {
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return `询价将按 ${queryLb} lb（${formatCargoInputNumber(value)} kg 换算，小数进一）`;
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}
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if (queryLb !== rawLb) {
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return `询价将按 ${queryLb} lb（小数进一）`;
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}
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return null;
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}
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export function describeDimEquivalent(
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length: number,
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width: number,
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height: number,
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unit: UnitDim,
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): string | null {
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if (
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!Number.isFinite(length) ||
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!Number.isFinite(width) ||
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!Number.isFinite(height) ||
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length <= 0 ||
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width <= 0 ||
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height <= 0
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) {
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return null;
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}
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const toQueryIn = (v: number) =>
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toAxelWholeInches(unit === "cm" ? cmToIn(v) : v);
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const ql = toQueryIn(length);
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const qw = toQueryIn(width);
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const qh = toQueryIn(height);
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if (unit === "cm") {
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return `询价将按 ${ql} × ${qw} × ${qh} in（厘米换算，小数进一）`;
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}
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const rawL = length;
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const rawW = width;
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const rawH = height;
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if (ql !== rawL || qw !== rawW || qh !== rawH) {
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return `询价将按 ${ql} × ${qw} × ${qh} in（小数进一）`;
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}
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return null;
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}
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