import {z} from 'zod'

export type GetApiDataImportersArgs = {supportedEngines?: Array<string> | undefined};

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

export const dataImporter = z.object({apiVersion: z.string().optional(), kind: z.string().optional(), metadata: z.object({}).optional(), spec: z.object({clusterPermissions: z.array(z.object({apiGroups: z.array(z.string()).optional(), nonResourceURLs: z.array(z.string()).optional(), resourceNames: z.array(z.string()).optional(), resources: z.array(z.string()).optional(), verbs: z.array(z.string())})).optional(), config: z.object({openAPIV3Schema: z.unknown()}).optional(), databaseClusterConstraints: z.object({requiredFields: z.array(z.string()).optional()}).optional(), description: z.string().optional(), displayName: z.string().optional(), jobSpec: z.object({command: z.array(z.string()).optional(), image: z.string().optional()}).optional(), permissions: z.array(z.object({apiGroups: z.array(z.string()).optional(), nonResourceURLs: z.array(z.string()).optional(), resourceNames: z.array(z.string()).optional(), resources: z.array(z.string()).optional(), verbs: z.array(z.string())})).optional(), supportedEngines: z.array(z.string()).optional()}).optional(), status: z.object({}).optional()});

export const dataImporterList = z.object({apiVersion: z.string().optional(), kind: z.string().optional(), items: z.array(dataImporter).optional(), metadata: z.object({}).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
};

/**
 * List data importers
 * 
 * GET /data-importers
 */
export const getApiDataImporters = async (args: GetApiDataImportersArgs, options: GetApiDataImportersOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

for (const item of args.supportedEngines ?? []) query.append("supportedEngines", String(item))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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