84 lines
2.1 KiB
TypeScript
84 lines
2.1 KiB
TypeScript
/**
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* 採購單相關工具函式
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*/
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import type { PurchaseOrderItem } from "@/types/purchase-order";
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import { PRICE_ALERT_THRESHOLD } from "@/constants/purchase-order";
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/**
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* 格式化金額
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*/
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export function formatCurrency(amount: number): string {
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return `$${amount.toLocaleString()}`;
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}
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/**
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* 計算項目小計
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*/
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export function calculateSubtotal(quantity: number, unitPrice: number): number {
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return quantity * unitPrice;
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}
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/**
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* 計算總金額
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*/
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export function calculateTotalAmount(items: PurchaseOrderItem[]): number {
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return items.reduce((sum, item) => sum + Number(item.subtotal || 0), 0);
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}
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/**
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* 檢查價格是否警示（超過閾值）
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*/
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export function isPriceAlert(currentPrice: number, previousPrice?: number): boolean {
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if (!previousPrice || previousPrice === 0) return false;
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const increase = ((currentPrice - previousPrice) / previousPrice) * 100;
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return increase > PRICE_ALERT_THRESHOLD;
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}
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/**
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* 計算價格漲幅百分比
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*/
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export function calculatePriceIncrease(currentPrice: number, previousPrice?: number): number {
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if (!previousPrice || previousPrice === 0) return 0;
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return ((currentPrice - previousPrice) / previousPrice) * 100;
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}
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/**
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* 生成採購單編號
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*/
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export function generatePONumber(): string {
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const year = new Date().getFullYear();
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const sequence = (Date.now() % 100000).toString().padStart(5, "0");
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return `PO${year}${sequence}`;
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}
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/**
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* 取得今天日期（YYYY-MM-DD 格式）
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*/
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export function getTodayDate(): string {
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return new Date().toISOString().split("T")[0];
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}
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/**
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* 驗證採購單表單
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*/
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export function validatePurchaseOrder(
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supplierId: string,
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expectedDate: string,
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items: PurchaseOrderItem[]
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): boolean {
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return !!(
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supplierId &&
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expectedDate &&
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items.length > 0 &&
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items.some((item) => item.quantity > 0)
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);
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}
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/**
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* 過濾有效項目（數量和單價都必須大於 0）
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*/
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export function filterValidItems(items: PurchaseOrderItem[]): PurchaseOrderItem[] {
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return items.filter((item) => item.quantity > 0 && item.unitPrice > 0);
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}
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