import {z} from 'zod'

export type SmeRegistrationSubmitData = {onboardingRequestId: string, companyName: string, certNumber: string, kraPin: string, operatingMode: 1 | 2 | 3 | 4, businessAddress: string, businessIndustry: number, specifyIndustry?: string | undefined, directors: Array<{idType: '101' | '102' | '103', idNumber: string, gender?: (0 | 1) | undefined, email?: string | undefined, mobile: string, firstName: string, middleName?: string | undefined, lastName: string, kraPin: string, idFrontSideFileKey: string, idFrontSideFileType: 'image' | 'pdf', idBackSideFileKey: string, idBackSideFileType: 'image' | 'pdf', selfieFileKey: string, selfieFileType: 'image' | 'pdf', kraPinFileKey: string, kraPinFileType: 'image' | 'pdf'}>, organizationShareholders?: (Array<{companyName: string, registrationFileKey: string, registrationFileType: 'image' | 'pdf'}>) | undefined, media?: (Array<{fileKey: string, mediaType: string, contentType?: ('pdf' | 'image') | undefined}>) | undefined};

export type CreateApiApiV1SmeRegistrationArgs = {body: {step: 'INITIATE', data: {mobile: string, email: string, businessType: 2}} | {step: 'CONFIRM_OTP', data: {onboardingRequestId: string, otp: string}} | {step: 'SUBMIT', data: SmeRegistrationSubmitData}};

export type CreateApiApiV1SmeRegistrationOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiApiV1SmeRegistrationResponse = z.object({data: z.object({onboardingRequestId: z.string().optional(), step: z.enum(["INITIATE", "CONFIRM_OTP", "SUBMIT"]).optional(), status: z.enum(["OTP_PENDING", "DETAILS_PENDING", "SUBMITTED", "REJECTED", "EXPIRED"]).optional(), nextStep: z.enum(["CONFIRM_OTP", "SUBMIT", "null"]).nullable().optional(), expiresAt: 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
};

/**
 * Register a business as an SME (step-based)
 * 
 * POST /api/v1/sme-registration
 */
export const createApiApiV1SmeRegistration = async (args: CreateApiApiV1SmeRegistrationArgs, options?: CreateApiApiV1SmeRegistrationOptions) => {
const {baseUrl = "https://sandbox.api.afriex.com", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

if (ApiKey !== undefined) headers.set("x-api-key", ApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/sme-registration${query.size > 0 ? `?${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(createApiApiV1SmeRegistrationResponse, await res.json())
};