122 lines
2.8 KiB
TypeScript
122 lines
2.8 KiB
TypeScript
export type ClientCartItem = {
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productId: string;
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productName: string;
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sku: string;
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isCustomizable: boolean;
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quantity: number;
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parameters: {
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width: number;
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thickness: number;
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color: string;
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};
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};
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function normalizeQuantity(value: number) {
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if (!Number.isFinite(value) || value < 0) {
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return 0;
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}
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return Math.floor(value);
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}
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export function useClientCart() {
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const items = useState<ClientCartItem[]>('client-cart-items', () => []);
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const totalPositions = computed(() => items.value.length);
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const totalItems = computed(() => items.value.reduce((sum, item) => sum + item.quantity, 0));
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const totalVolume = computed(() =>
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items.value.reduce((sum, item) => sum + item.quantity * item.parameters.width * item.parameters.thickness, 0),
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);
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function getQuantity(productId: string) {
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return items.value.find((item) => item.productId === productId)?.quantity ?? 0;
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}
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function addProduct(product: {
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id: string;
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name: string;
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sku: string;
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isCustomizable: boolean;
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}) {
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const existing = items.value.find((item) => item.productId === product.id);
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if (existing) {
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existing.quantity += 1;
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return;
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}
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items.value.push({
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productId: product.id,
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productName: product.name,
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sku: product.sku,
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isCustomizable: product.isCustomizable,
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quantity: 1,
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parameters: {
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width: 100,
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thickness: 50,
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color: 'прозрачный',
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},
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});
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}
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function setQuantity(productId: string, quantity: number) {
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const existing = items.value.find((item) => item.productId === productId);
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if (!existing) {
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return;
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}
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const normalizedQuantity = normalizeQuantity(quantity);
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if (normalizedQuantity === 0) {
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removeProduct(productId);
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return;
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}
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existing.quantity = normalizedQuantity;
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}
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function incrementQuantity(productId: string) {
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const existing = items.value.find((item) => item.productId === productId);
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if (!existing) {
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return;
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}
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existing.quantity += 1;
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}
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function decrementQuantity(productId: string) {
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const existing = items.value.find((item) => item.productId === productId);
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if (!existing) {
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return;
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}
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const normalizedQuantity = normalizeQuantity(existing.quantity - 1);
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if (normalizedQuantity === 0) {
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removeProduct(productId);
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return;
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}
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existing.quantity = normalizedQuantity;
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}
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function removeProduct(productId: string) {
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items.value = items.value.filter((item) => item.productId !== productId);
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}
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function clearCart() {
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items.value = [];
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}
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return {
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items,
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totalPositions,
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totalItems,
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totalVolume,
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addProduct,
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setQuantity,
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incrementQuantity,
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decrementQuantity,
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removeProduct,
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clearCart,
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getQuantity,
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};
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}
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