import {z} from 'zod'

export type CreateApiVfsStatsArgs = {Prefer?: 'respond-async' | undefined, body: {_config?: {[key: string]: unknown} | undefined, _filter?: {[key: string]: unknown} | undefined, _group?: string | undefined, fs?: string | undefined}};

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

export const createApiVfsStatsResponse = z.object({fs: z.string(), inUse: z.number().int(), diskCache: z.object({bytesUsed: z.number().int().optional(), erroredFiles: z.number().int().optional(), files: z.number().int().optional(), hashType: z.number().int().optional(), outOfSpace: z.boolean().optional(), path: z.string().optional(), pathMeta: z.string().optional(), uploadsInProgress: z.number().int().optional(), uploadsQueued: z.number().int().optional()}).nullable().optional(), metadataCache: z.object({dirs: z.number().int().optional(), files: z.number().int().optional()}), opt: z.object({NoSeek: z.boolean().optional(), NoChecksum: z.boolean().optional(), ReadOnly: z.boolean().optional(), Links: z.boolean().optional(), NoModTime: z.boolean().optional(), DirCacheTime: z.number().int().optional(), Refresh: z.boolean().optional(), PollInterval: z.number().int().optional(), Umask: z.number().int().optional(), UID: z.number().int().optional(), GID: z.number().int().optional(), DirPerms: z.number().int().optional(), FilePerms: z.number().int().optional(), LinkPerms: z.number().int().optional(), ChunkSize: z.number().int().optional(), ChunkSizeLimit: z.number().int().optional(), ChunkStreams: z.number().int().optional(), CacheMode: z.number().int().optional(), CacheMaxAge: z.number().int().optional(), CacheMaxSize: z.number().int().optional(), CacheMinFreeSpace: z.number().int().optional(), CachePollInterval: z.number().int().optional(), CaseInsensitive: z.boolean().optional(), BlockNormDupes: z.boolean().optional(), WriteWait: z.number().int().optional(), ReadWait: z.number().int().optional(), WriteBack: z.number().int().optional(), ReadAhead: z.number().int().optional(), UsedIsSize: z.boolean().optional(), FastFingerprint: z.boolean().optional(), DiskSpaceTotalSize: z.number().int().optional(), HandleCaching: z.number().int().optional(), MetadataExtension: z.string().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
};

/**
 * Show VFS stats
 * 
 * POST /vfs/stats
 */
export const createApiVfsStats = async (args: CreateApiVfsStatsArgs, options?: CreateApiVfsStatsOptions) => {
const {baseUrl = "http://localhost:5572", 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.Prefer != null) headers.set("Prefer", String(args.Prefer))

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