import {z} from 'zod'

export type ProductType = 'REGULAR' | 'SUBSCRIPTION';

export type ProductCurrency = 'USD' | 'AUD' | 'CAD' | 'CHF' | 'DKK' | 'EUR' | 'GBP' | 'NOK' | 'NZD' | 'PLN' | 'SEK' | 'SGD';

export type RegularProduct = {clientProductId?: string | undefined, description?: string | undefined, displayName: string, image?: string | undefined, type: ProductType, amount?: string | undefined, unitAmount: number, currency: ProductCurrency} | {clientProductId?: string | undefined, description?: string | undefined, displayName: string, image?: string | undefined, type: ProductType, amount: string, unitAmount?: number | undefined, currency: ProductCurrency};

export type SubscriptionProduct = {clientProductId?: string | undefined, description?: string | undefined, displayName: string, image?: string | undefined, type: ProductType};

export type CreateApiV2ProductsArgs = {body: RegularProduct | SubscriptionProduct};

export type CreateApiV2ProductsOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const createProductResponse = z.object({id: z.string().optional(), createdAt: z.number().optional(), updatedAt: z.number().optional(), defaultPriceId: z.string().optional(), clientProductId: z.string().optional(), description: z.string().optional(), displayName: z.string(), image: z.string().optional(), livemode: z.boolean(), merchantId: z.string(), status: z.enum(["ACTIVE", "INACTIVE", "PENDING", "DELETED"]), type: z.enum(["SUBSCRIPTION", "REGULAR"])});

export const createApiV2ProductsResponse = z.object({status: z.literal("SUCCEEDED"), data: createProductResponse});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Create a product
 * 
 * POST /v2/products
 */
export const createApiV2Products = async (args: CreateApiV2ProductsArgs, options?: CreateApiV2ProductsOptions) => {
const {baseUrl = "https://api.breeze.cash", fetch: fetchFn = fetch, basicAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/products${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiV2ProductsResponse, await res.json())
};