import {z} from 'zod'

export type LicenseValidationRequest = {license_key: string, instance: string, domain?: (string | null) | undefined, installation_path?: (string | null) | undefined, application_version?: (string | null) | undefined};

export type CreateApiLicenseValidateArgs = {body: LicenseValidationRequest};

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

export const licenseStatus = z.enum(["active", "reissued", "suspended", "expired", "revoked"]);

export const licenseValidationResponse = z.object({success: z.literal(true), valid: z.boolean(), status: licenseStatus, reason: z.enum(["license_reissued", "license_suspended", "license_expired", "license_revoked", "activation_not_found", "installation_mismatch", "null"]).nullable(), activations_used: z.number().int().gte(0), activation_limit: z.number().int().gte(1).nullable(), offline_token: z.string().nullable(), offline_public_key: z.string().nullable(), offline_expires_at: z.number().int().nullable()});

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
};

/**
 * Validate a software license
 * 
 * POST /license/validate
 */
export const createApiLicenseValidate = async (args: CreateApiLicenseValidateArgs, options?: CreateApiLicenseValidateOptions) => {
const {baseUrl = "https://demo.onlinebillingform.com/api/v2", 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 = `${baseUrl.replace(/\/+$/, '')}/license/validate${query.size > 0 ? `?${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(licenseValidationResponse, await res.json())
};