import {z} from 'zod'

export type GetApiPublicKafkaV2ClusterClusterSubjectSubjectNameArgs = {cluster: string, 'subject-name': string};

export type GetApiPublicKafkaV2ClusterClusterSubjectSubjectNameOptions = {baseUrl: string, httpAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const subjectKind = z.literal("Subject");

export const mapLabelKeyString = z.record(z.string(), z.string());

export const subjectMetadata = z.object({name: z.string(), cluster: z.string(), labels: mapLabelKeyString.optional()});

export const schemaFormat = z.enum(["AVRO", "JSON", "PROTOBUF"]);

export const schemaCompatibility = z.enum(["BACKWARD", "BACKWARD_TRANSITIVE", "FORWARD", "FORWARD_TRANSITIVE", "FULL", "FULL_TRANSITIVE", "NONE"]);

export const schemaReference = z.object({name: z.string(), subject: z.string(), version: z.number().int()});

export const subjectSpec = z.object({format: schemaFormat, compatibility: schemaCompatibility.optional(), schema: z.string(), id: z.number().int().optional(), version: z.number().int().optional(), references: z.array(schemaReference).optional(), guid: z.string().optional()});

export const subjectResourceV2 = z.object({apiVersion: z.string(), kind: subjectKind, metadata: subjectMetadata, spec: subjectSpec});

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 Subject by name
 * 
 * GET /public/kafka/v2/cluster/{cluster}/subject/{subject-name}
 */
export const getApiPublicKafkaV2ClusterClusterSubjectSubjectName = async (args: GetApiPublicKafkaV2ClusterClusterSubjectSubjectNameArgs, options: GetApiPublicKafkaV2ClusterClusterSubjectSubjectNameOptions) => {
const {baseUrl, fetch: fetchFn = fetch, httpAuth} = options ?? {}

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

if (httpAuth !== undefined) headers.set('authorization', `Bearer ${httpAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/public/kafka/v2/cluster/${encodeURIComponent(String(args.cluster))}/subject/${encodeURIComponent(String(args['subject-name']))}${query.size > 0 ? `?${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(subjectResourceV2, await res.json())
};