import {z} from 'zod'

export type CustomerType = 'COMPANY' | 'INDIVIDUAL';

export type CreateApiPlatformV1CustomersAgreementSessionsArgs = {body: {customerType: CustomerType, countryCode: string, useCase: 'STABLECOIN_PAYOUTS' | 'EMBEDDED_STABLECOIN_WALLETS' | 'EMBEDDED_FIAT_ACCOUNTS' | 'CARD_AGREEMENT', customerReference?: string | undefined}};

export type CreateApiPlatformV1CustomersAgreementSessionsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiPlatformV1CustomersAgreementSessionsResponse = z.object({reference: z.string().optional(), status: z.enum(["PENDING", "SIGNED", "DECLINED"]).optional(), customerType: z.string().optional(), useCase: z.string().optional(), countryCode: z.string().optional(), expiresOn: z.string().optional(), agreements: z.array(z.object({name: z.string().optional(), displayName: z.string().optional(), description: z.string().optional(), url: z.string().optional(), status: z.string().optional(), privacyPolicyName: z.string().optional(), privacyPolicyDescription: z.string().optional(), privacyPolicyUrl: z.string().optional()})).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 agreement signing session
 * 
 * POST /platform/v1/customers/agreement/sessions
 */
export const createApiPlatformV1CustomersAgreementSessions = async (args: CreateApiPlatformV1CustomersAgreementSessionsArgs, options?: CreateApiPlatformV1CustomersAgreementSessionsOptions) => {
const {baseUrl = "https://api.sandbox.bvnk.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/platform/v1/customers/agreement/sessions${query.size > 0 ? `?${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(createApiPlatformV1CustomersAgreementSessionsResponse, await res.json())
};