import {z} from 'zod'

export type GetApiV1SubscriptionsOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const listSubscriptionsResponse = z.array(z.object({id: z.string(), clientReferenceId: z.string(), status: z.enum(["INCOMPLETE", "TRIALING", "SCHEDULED", "ACTIVE", "DISCOUNTED_TRIALING", "GRACE_PERIOD", "CANCELED", "SUSPENDED", "INCOMPLETE_EXPIRED"]), priceId: z.string(), productId: z.string(), customerId: z.string(), amountStr: z.string(), unitAmount: z.number(), currency: z.string(), billingCycleConfig: z.object({interval: z.enum(["hour", "day", "week", "month", "year"]), frequency: z.number()}), merchantId: z.string(), livemode: z.boolean(), defaultPaymentMethodId: z.string().optional(), defaultPaymentMethodType: z.string().optional(), billingCycleAnchor: z.number().optional(), canceledAt: z.number().optional(), canceledBy: z.string().optional(), lastSuccessfulPaymentId: z.string().optional(), lastSuccessfulInvoiceId: z.string().optional(), firstSuccessfulPaymentId: z.string().optional(), trial: z.unknown(), startAt: z.number().optional(), fallbackBillingEmail: z.string().optional(), successReturnUrl: z.string().optional(), failReturnUrl: z.string().optional(), cancelAtPeriodEnd: z.boolean().optional(), cancelAt: z.number().optional(), preferredPaymentMethods: z.array(z.enum(["card", "saved_card", "apple_pay", "google_pay", "crypto", "crypto_wallet", "crypto_deposit"])).optional(), phases: z.array(z.object({cycleCount: z.number(), price: z.object({id: z.string().optional(), unitAmount: z.number(), currency: z.enum(["USD", "AUD", "CAD", "CHF", "DKK", "EUR", "GBP", "HKD", "JPY", "NOK", "NZD", "PLN", "SEK", "SGD", "TWD", "KRW", "SOL", "USDC", "USDT", "HONEY", "EURC"]), billingCycleConfig: z.object({interval: z.enum(["hour", "day", "week", "month", "year"]), frequency: z.number()})})})).optional(), gracePeriodDays: z.number().optional()}));

export const getApiV1SubscriptionsResponse = z.object({status: z.literal("SUCCEEDED"), data: listSubscriptionsResponse, hasMore: z.boolean().optional()});

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
};

/**
 * List subscriptions
 * 
 * GET /v1/subscriptions
 */
export const getApiV1Subscriptions = async (options?: GetApiV1SubscriptionsOptions) => {
const {baseUrl = "https://api.breeze.cash", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/subscriptions${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

return validateResponse(getApiV1SubscriptionsResponse, await res.json())
};