import {z} from 'zod'

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

export const licenseRequestDeploymentScope = z.object({id: z.string().nullable().optional(), baseDomains: z.array(z.string())});

export const licenseDeliveryMethod = z.literal("MANUAL");

export const licenseRequestContactRole = z.enum(["TECHNICAL", "ADMINISTRATOR"]);

export const licenseRequestContact = z.object({email: z.string(), givenName: z.string(), familyName: z.string(), roles: z.array(licenseRequestContactRole), displayName: z.string().nullable().optional()});

export const licenseRequestDeployment = z.object({deployment: licenseRequestDeploymentScope, organizationName: z.string(), organizationUnit: z.string().nullable().optional(), locality: z.string().nullable().optional(), state: z.string().nullable().optional(), country: z.string().min(2).max(2).nullable().optional(), licenseDeliveryMethod: licenseDeliveryMethod.optional(), contacts: z.array(licenseRequestContact)});

export const licenseRequestTenant = z.object({name: z.string(), slug: z.string()});

export const licenseRequestOwner = z.object({email: z.string(), displayName: z.string()});

export const localInstanceCertificate = z.object({commonName: z.string(), organizationName: z.string().nullable().optional(), organizationUnit: z.string().nullable().optional(), locality: z.string().nullable().optional(), state: z.string().nullable().optional(), country: z.string().nullable().optional(), email: z.string().nullable().optional(), serialNumber: z.number().int()});

export const localInstancePublicKey = z.object({alias: z.string(), providerId: z.string(), kid: z.string().nullable().optional(), publicJwk: z.record(z.string(), z.unknown())});

export const licenseRequestCertificateSigningRequest = z.object({derBase64: z.string(), pem: z.string(), fingerprint: z.string()});

export const licenseRecipientCertificate = z.object({derBase64: z.string(), pem: z.string(), chainBase64: z.array(z.string()), fingerprint: z.string()});

export const licenseRecipientPublicKey = z.object({kid: z.string(), publicJwk: z.record(z.string(), z.unknown()), thumbprint: z.string(), certificate: licenseRecipientCertificate.nullable().optional()});

export const licenseRequestPayload = z.object({version: z.string(), requestId: z.string(), generatedAt: z.string(), deployment: licenseRequestDeploymentScope, platformIssuer: z.string(), tenant: licenseRequestTenant, owner: licenseRequestOwner, contacts: z.array(licenseRequestContact), organizationName: z.string().nullable().optional(), organizationUnit: z.string().nullable().optional(), licenseDeliveryMethod: licenseDeliveryMethod, localCertificate: localInstanceCertificate, localPublicKey: localInstancePublicKey, certificateSigningRequest: licenseRequestCertificateSigningRequest.nullable(), licenseRecipient: licenseRecipientPublicKey.nullable()});

export const licenseRequestSignature = z.object({algorithm: z.string(), keyId: z.string().nullable().optional(), signatureBase64: z.string()});

export const licenseRequestResponse = z.object({request: licenseRequestPayload, requestJson: z.string(), signature: licenseRequestSignature, artifactDigest: z.string().nullable().optional()});

export const onboardingState = z.object({gateOpen: z.boolean(), resumeStep: z.number().int(), deployment: licenseRequestDeployment.nullable().optional(), generatedRequest: licenseRequestResponse.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
};

/**
 * Get persisted first-run onboarding state
 * 
 * GET /onboarding/state
 */
export const getApiOnboardingState = async (options?: GetApiOnboardingStateOptions) => {
const {baseUrl = "https://api.example.com/api/platform/setup/v1", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/onboarding/state${query.size > 0 ? `?${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(onboardingState, await res.json())
};