import {z} from 'zod'

export type CurrencyOrNull = 'null' | 'AED' | 'AFN' | 'ALL' | 'AMD' | 'ANG' | 'AOA' | 'ARS' | 'AUD' | 'AWG' | 'AZN' | 'BAM' | 'BBD' | 'BDT' | 'BGN' | 'BIF' | 'BMD' | 'BND' | 'BOB' | 'BRL' | 'BSD' | 'BWP' | 'BYN' | 'BZD' | 'CAD' | 'CDF' | 'CHF' | 'CLF' | 'CLP' | 'CNY' | 'COP' | 'CRC' | 'CVE' | 'CZK' | 'DJF' | 'DKK' | 'DOP' | 'DZD' | 'EGP' | 'ETB' | 'EUR' | 'FJD' | 'FKP' | 'GBP' | 'GEL' | 'GIP' | 'GMD' | 'GNF' | 'GTQ' | 'GYD' | 'HKD' | 'HNL' | 'HRK' | 'HTG' | 'HUF' | 'IDR' | 'ILS' | 'INR' | 'ISK' | 'JMD' | 'JPY' | 'KES' | 'KGS' | 'KHR' | 'KMF' | 'KRW' | 'KYD' | 'KZT' | 'LAK' | 'LBP' | 'LKR' | 'LRD' | 'LSL' | 'MAD' | 'MDL' | 'MGA' | 'MKD' | 'MMK' | 'MNT' | 'MOP' | 'MRO' | 'MUR' | 'MVR' | 'MWK' | 'MXN' | 'MYR' | 'MZN' | 'NAD' | 'NGN' | 'NIO' | 'NOK' | 'NPR' | 'NZD' | 'PAB' | 'PEN' | 'PGK' | 'PHP' | 'PKR' | 'PLN' | 'PYG' | 'QAR' | 'RON' | 'RSD' | 'RUB' | 'RWF' | 'SAR' | 'SBD' | 'SCR' | 'SEK' | 'SGD' | 'SHP' | 'SLL' | 'SOS' | 'SRD' | 'STD' | 'SYP' | 'SZL' | 'THB' | 'TJS' | 'TND' | 'TOP' | 'TRY' | 'TTD' | 'TWD' | 'TZS' | 'UAH' | 'UGX' | 'USD' | 'UYU' | 'UZS' | 'VND' | 'VUV' | 'WST' | 'XAF' | 'XCD' | 'XOF' | 'XPF' | 'YER' | 'ZAR' | 'ZMW' | null;

export type CouponBaseInput = {name?: string | undefined, code?: string | undefined, description?: (string | null) | undefined, coupon_type?: ('fixed_amount' | 'percentage') | undefined, amount_cents?: (number | null) | undefined, amount_currency?: CurrencyOrNull | undefined, reusable?: boolean | undefined, percentage_rate?: (string | number | null) | undefined, frequency?: ('once' | 'recurring' | 'forever') | undefined, frequency_duration?: (number | null) | undefined, expiration?: ('no_expiration' | 'time_limit') | undefined, expiration_at?: (string | null) | undefined, applies_to?: ({plan_codes?: (Array<string> | null) | undefined, billable_metric_codes?: (Array<string> | null) | undefined} | null) | undefined};

export type CouponCreateInput = {coupon: CouponBaseInput};

export type CreateApiCouponsArgs = {body: CouponCreateInput};

export type CreateApiCouponsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const currencyOrNull = z.enum(["null", "AED", "AFN", "ALL", "AMD", "ANG", "AOA", "ARS", "AUD", "AWG", "AZN", "BAM", "BBD", "BDT", "BGN", "BIF", "BMD", "BND", "BOB", "BRL", "BSD", "BWP", "BYN", "BZD", "CAD", "CDF", "CHF", "CLF", "CLP", "CNY", "COP", "CRC", "CVE", "CZK", "DJF", "DKK", "DOP", "DZD", "EGP", "ETB", "EUR", "FJD", "FKP", "GBP", "GEL", "GIP", "GMD", "GNF", "GTQ", "GYD", "HKD", "HNL", "HRK", "HTG", "HUF", "IDR", "ILS", "INR", "ISK", "JMD", "JPY", "KES", "KGS", "KHR", "KMF", "KRW", "KYD", "KZT", "LAK", "LBP", "LKR", "LRD", "LSL", "MAD", "MDL", "MGA", "MKD", "MMK", "MNT", "MOP", "MRO", "MUR", "MVR", "MWK", "MXN", "MYR", "MZN", "NAD", "NGN", "NIO", "NOK", "NPR", "NZD", "PAB", "PEN", "PGK", "PHP", "PKR", "PLN", "PYG", "QAR", "RON", "RSD", "RUB", "RWF", "SAR", "SBD", "SCR", "SEK", "SGD", "SHP", "SLL", "SOS", "SRD", "STD", "SYP", "SZL", "THB", "TJS", "TND", "TOP", "TRY", "TTD", "TWD", "TZS", "UAH", "UGX", "USD", "UYU", "UZS", "VND", "VUV", "WST", "XAF", "XCD", "XOF", "XPF", "YER", "ZAR", "ZMW"]).nullable();

export const couponObject = z.object({lago_id: z.string(), name: z.string(), code: z.string(), description: z.string().nullable().optional(), coupon_type: z.enum(["fixed_amount", "percentage"]), amount_cents: z.number().int().nullable().optional(), amount_currency: currencyOrNull.optional(), reusable: z.boolean(), limited_plans: z.boolean(), plan_codes: z.array(z.string()).optional(), limited_billable_metrics: z.boolean(), billable_metric_codes: z.array(z.string()).optional(), percentage_rate: z.string().nullable().optional(), frequency: z.enum(["once", "recurring", "forever"]), frequency_duration: z.number().int().nullable().optional(), expiration: z.enum(["no_expiration", "time_limit"]), expiration_at: z.string().nullable().optional(), created_at: z.string(), terminated_at: z.string().nullable().optional()});

export const coupon = z.object({coupon: couponObject});

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 coupon
 * 
 * POST /coupons
 */
export const createApiCoupons = async (args: CreateApiCouponsArgs, options?: CreateApiCouponsOptions) => {
const {baseUrl = "https://api.getlago.com/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/coupons${query.size > 0 ? `?${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(coupon, await res.json())
};