import {z} from 'zod'

export type OnrampSessionRequest = {auth_intent_id: string, crypto_customer_id: string, payment_token: string};

export type CreateApiOnrampIntentsIntentIdSessionArgs = {'X-API-KEY': string, intent_id: string, body: OnrampSessionRequest};

export type CreateApiOnrampIntentsIntentIdSessionOptions = {baseUrl?: string | undefined, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const onrampSessionQuote = z.object({source_currency: z.string(), source_amount: z.string(), transaction_fee_amount: z.string(), network_fee_amount: z.string(), source_total_amount: z.string()});

export const onrampSessionResponse = z.object({id: z.string(), quote_expires_at: z.number().int().nullable().optional(), quote: onrampSessionQuote.nullable().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 Onramp Session
 * 
 * POST /onramp/intents/{intent_id}/session
 */
export const createApiOnrampIntentsIntentIdSession = async (args: CreateApiOnrampIntentsIntentIdSessionArgs, options?: CreateApiOnrampIntentsIntentIdSessionOptions) => {
const {baseUrl = "https://api.coinvoyage.io/v3", fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args['X-API-KEY'] != null) headers.set("X-API-KEY", String(args['X-API-KEY']))
if (APIKeyHeader !== undefined) headers.set("X-API-KEY", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/onramp/intents/${encodeURIComponent(String(args.intent_id))}/session${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(onrampSessionResponse, await res.json())
};