ASPNetCore/Next/lib/product.ts

import { ProductListItem } from "../APIClient";

export interface ProductDataProps {
    productID: string,
}
export interface DeleteProductProps extends ProductDataProps {
    onDelete: (val) => void
}
export interface ProductListRowsProps {
    products: ProductListItem[],
    onDelete: (val) => void,
}
export interface ProductState {
    product: ProductListItem[]
}
export interface ProductFormEntry {
    name: string,
    price: number,
}
export interface ProductFormState {
    form: ProductFormEntry,
    errors: string[],
    busy: boolean,
}

export function validateForm(form: ProductFormEntry) {
    let errors: {name: string[],price: string[]} = {
        name: [],
        price: [],
    };
    if (!form.name) {
        errors.name.push("Name required");
    }
    if (!form.price) {
        errors.price.push("Price required");
    }
    if (form.price < 0) {
        errors.price.push("Price must be positive");
    }
    return errors;
}