import {z} from 'zod'

export type GenericEnroll = {certCsr?: string | undefined, clientCsr?: string | undefined, name?: string | undefined, password?: string | undefined, serverCertCsr?: string | undefined, username?: string | undefined};

export type CreateApiEnrollArgs = {token?: string | undefined, method?: string | undefined, body: GenericEnroll};

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

export const link = z.object({comment: z.string().optional(), href: z.string(), method: z.string().optional()});

export const tags = z.record(z.string(), z.object({}));

export const apiAddress = z.object({url: z.string().optional(), version: z.string().optional()});

export const apiAddressArray = z.array(apiAddress);

export const apiAddressList = z.record(z.string(), apiAddressArray);

export const controllerDetail = z.object({_links: z.record(z.string(), link), createdAt: z.string(), id: z.string(), tags: tags.optional(), updatedAt: z.string(), apiAddresses: apiAddressList.optional(), certPem: z.string(), ctrlAddress: z.string().nullable().optional(), fingerprint: z.string(), isOnline: z.boolean(), isPreferredLeader: z.boolean().optional(), lastJoinedAt: z.string(), name: z.string()});

export const enrollmentCerts = z.object({controllers: z.array(controllerDetail).optional(), ca: z.string().optional(), cert: z.string().optional(), serverCert: z.string().optional()});

export const pagination = z.object({limit: z.number(), offset: z.number(), totalCount: z.number()});

export const meta = z.object({apiEnrollmentVersion: z.string().optional(), apiVersion: z.string().optional(), filterableFields: z.array(z.string()).optional(), pagination: pagination.optional()});

export const enrollmentCertsEnvelope = z.object({data: enrollmentCerts.optional(), meta: meta.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
};

/**
 * Enroll an identity via one-time-token
 * 
 * POST /enroll
 */
export const createApiEnroll = async (args: CreateApiEnrollArgs, options?: CreateApiEnrollOptions) => {
const {baseUrl = "https://demo.ziti.dev/edge/client/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.token != null) query.append("token", String(args.token))
if (args.method != null) query.append("method", String(args.method))

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