import {z} from 'zod'

export type SourcesHealthInput = {hosts?: (Array<string> | null) | undefined, timeout_seconds?: number | undefined};

export type CreateApiV1OpCatalogSourcesHealthArgs = {'x-api-key'?: (string | null) | undefined, body: SourcesHealthInput};

export type CreateApiV1OpCatalogSourcesHealthOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const hostHealth = z.object({host: z.string(), status: z.enum(["ok", "auth", "down", "timeout", "unconfigured", "error"]), latency_ms: z.number().int(), features: z.number().int().nullable().optional(), detail: z.string().nullable().optional()});

export const sourcesHealthOutput = z.object({checked_at: z.string(), ok: z.boolean(), failing: z.array(z.string()), results: z.array(hostHealth), credentials: z.record(z.string(), z.string())});

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
};

/**
 * Probe every vendor/host adapter with a one-result search; report ok / auth / down / timeout / unconfigured (admin, cron).
 * 
 * POST /v1/op/catalog.sources.health
 */
export const createApiV1OpCatalogSourcesHealth = async (args: CreateApiV1OpCatalogSourcesHealthArgs, options: CreateApiV1OpCatalogSourcesHealthOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args['x-api-key'] != null) headers.set("x-api-key", String(args['x-api-key']))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/op/catalog.sources.health${query.size > 0 ? `?${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(sourcesHealthOutput, await res.json())
};