export type CheckoutContext = {
  productId?: string | null;
  qty?: string | number | null;
  addressId?: string | null;
  cross?: boolean | string | null;
  select?: boolean | string | null;
};

export function readCheckoutContext(params: URLSearchParams): CheckoutContext {
  return {
    productId: params.get('productId'),
    qty: params.get('qty'),
    addressId: params.get('addressId'),
    cross: params.get('cross'),
    select: params.get('select'),
  };
}

export function appendCheckoutContext(qs: URLSearchParams, ctx: CheckoutContext) {
  if (ctx.productId) qs.set('productId', ctx.productId);
  if (ctx.qty != null && ctx.qty !== '') qs.set('qty', String(ctx.qty));
  if (ctx.addressId) qs.set('addressId', ctx.addressId);
  if (ctx.cross === true || ctx.cross === '1') qs.set('cross', '1');
  if (ctx.select === true || ctx.select === '1') qs.set('select', '1');
}

export function buildOrderConfirmUrl(search: CheckoutContext) {
  const qs = new URLSearchParams();
  if (search.productId) qs.set('productId', search.productId);
  if (search.qty != null && search.qty !== '') qs.set('qty', String(search.qty));
  if (search.addressId) qs.set('addressId', search.addressId);
  if (search.cross === true || search.cross === '1') qs.set('cross', '1');
  const query = qs.toString();
  return query ? `/order/confirm?${query}` : '/order/confirm';
}

export function buildAddressListUrl(ctx: CheckoutContext = {}) {
  const qs = new URLSearchParams();
  appendCheckoutContext(qs, ctx);
  const query = qs.toString();
  return query ? `/addresses?${query}` : '/addresses';
}

export function buildAddressEditUrl(id: string | 'new', ctx: CheckoutContext = {}) {
  const path = id === 'new' ? '/addresses/new' : `/addresses/${id}/edit`;
  const qs = new URLSearchParams();
  appendCheckoutContext(qs, ctx);
  const query = qs.toString();
  return query ? `${path}?${query}` : path;
}

export function buildProductDetailUrl(productId?: string | null) {
  return productId ? `/product/${productId}` : '/';
}

export function buildOrderAddressSelectUrl(orderId: string) {
  return `/addresses?orderId=${orderId}&select=1`;
}

export function hasCheckoutContext(ctx: CheckoutContext) {
  return Boolean(ctx.productId || ctx.select === true || ctx.select === '1');
}