import {z} from 'zod'

export type ApplicationId = string;

export type GetApiV2ApplicationsApplicationIdArgs = {application_id: ApplicationId};

export type GetApiV2ApplicationsApplicationIdOptions = {baseUrl?: string | undefined, OAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const applicationId = z.string().min(30).max(50);

export const applicationStatus = z.enum(["initiated", "identity_verified", "submitted", "screened", "approved", "completed", "cancelled", "expired"]);

export const reference = z.string().min(1).max(50);

export const accountId = z.string().min(30).max(50);

export const businessLegalStructure = z.enum(["ca_private_corp", "ca_public_corp", "ca_non_profit"]);

export const baseRegistrationNumber = z.object({type: z.string(), value: z.string().min(1).max(50)});

export const germanRegistrationNumber = z.object({type: z.string(), value: z.string().min(1).max(50), registry: z.string()});

export const registrationNumber = z.discriminatedUnion("type", [baseRegistrationNumber, germanRegistrationNumber]);

export const businessResponse = z.object({legal_name: z.string().min(2).max(250), country: z.string().min(2).max(2), legal_structure: businessLegalStructure.optional(), registered_address: z.object({line1: z.string().min(1).max(250), line2: z.string().min(1).max(250).optional(), street_number: z.string().min(1).max(50), city: z.string().min(1).max(250), region: z.string().min(1).max(250).optional(), postal_code: z.string().min(1).max(16)}).optional(), registration_number: registrationNumber.optional()});

export const applicantResponse = z.object({email: z.string().max(320), first_name: z.string().min(2).max(50).optional(), last_name: z.string().min(2).max(50).optional()});

export const dateTime = z.string().min(24).max(24);

export const applicationFlow = z.object({next_step: z.object({type: z.literal("redirect"), url: z.string().max(1024), expires_at: dateTime.optional()})});

export const createdAt = z.string().min(24).max(24);

export const updatedAt = z.string().min(24).max(24);

export const applicationExpiresAt = z.string().min(24).max(24);

export const getApplicationResponse = z.object({id: applicationId, status: applicationStatus, reference: reference.optional(), account: z.object({id: accountId}), business: businessResponse.nullable().optional(), applicant: applicantResponse.nullable().optional(), flow: applicationFlow.optional(), created_at: createdAt, updated_at: updatedAt, expires_at: applicationExpiresAt});

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
};

/**
 * Get an application
 * 
 * GET /v2/applications/{application_id}
 */
export const getApiV2ApplicationsApplicationId = async (args: GetApiV2ApplicationsApplicationIdArgs, options?: GetApiV2ApplicationsApplicationIdOptions) => {
const {baseUrl = "https://api.getpaid.io", fetch: fetchFn = fetch, OAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/applications/${encodeURIComponent(String(args.application_id))}${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(getApplicationResponse, await res.json())
};