import {z} from 'zod'

export type CreateApiV1VouchersArgs = {body: {codes?: Array<string> | undefined, event_series_ids?: Array<string> | undefined, expiry?: (number | null) | undefined, interval?: (30 | 90 | 365 | null) | undefined, name: string, partial_redemption?: ('true' | 'false' | null) | undefined, usable_on_any_event?: ('true' | 'false' | null) | undefined, voucher_type?: ('PROMO' | 'GIFT_CARD' | null) | undefined, value: number}};

export type CreateApiV1VouchersOptions = {baseUrl?: string | undefined, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const voucher = z.object({object: z.string().optional(), id: z.string().optional(), available_codes: z.number().int().optional(), event_series_ids: z.array(z.string()).optional(), expiry: z.object({date: z.string().optional(), formatted: z.string().optional(), iso: z.string().optional(), time: z.string().optional(), timezone: z.string().optional(), unix: z.number().int().optional()}).nullable().optional(), name: z.string().optional(), partial_redemption: z.enum(["true", "false"]).optional(), total_codes: z.number().int().optional(), usable_on_any_event: z.enum(["true", "false"]).nullable().optional(), type: z.enum(["PROMO", "GIFT_CARD"]).optional(), value: z.number().int().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
};

/**
 * Create a voucher and its voucher codes
 * 
 * POST /v1/vouchers
 */
export const createApiV1Vouchers = async (args: CreateApiV1VouchersArgs, options?: CreateApiV1VouchersOptions) => {
const {baseUrl = "https://api.tickettailor.com", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

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

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

const res = await fetchFn(url, {method: "POST", headers, body: new URLSearchParams(Object.entries(args.body).flatMap(([key, value]) => (value == null ? [] : [[key, String(value)]])))})

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

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