import {z} from 'zod'

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

export const version = z.object({Major: z.number().int().optional(), Minor: z.number().int().optional(), Build: z.number().int().optional(), Revision: z.number().int().optional(), MajorRevision: z.number().int().optional(), MinorRevision: z.number().int().optional()});

export const installationInfo = z.object({Guid: z.string().optional(), Name: z.string().nullable().optional(), Version: version.optional(), Changelog: z.string().nullable().optional(), SourceUrl: z.string().nullable().optional(), Checksum: z.string().nullable().optional()});

export const fFmpegLocation = z.enum(["NotFound", "SetByArgument", "Custom", "System"]);

export const architecture = z.enum(["X86", "X64", "Arm", "Arm64", "Wasm"]);

export const systemInfo = z.object({LocalAddress: z.string().nullable().optional(), ServerName: z.string().nullable().optional(), Version: z.string().nullable().optional(), ProductName: z.string().nullable().optional(), OperatingSystem: z.string().nullable().optional(), Id: z.string().nullable().optional(), StartupWizardCompleted: z.boolean().nullable().optional(), OperatingSystemDisplayName: z.string().nullable().optional(), PackageName: z.string().nullable().optional(), HasPendingRestart: z.boolean().optional(), IsShuttingDown: z.boolean().optional(), SupportsLibraryMonitor: z.boolean().optional(), WebSocketPortNumber: z.number().int().optional(), CompletedInstallations: z.array(installationInfo).nullable().optional(), CanSelfRestart: z.boolean().optional(), CanLaunchWebBrowser: z.boolean().optional(), ProgramDataPath: z.string().nullable().optional(), WebPath: z.string().nullable().optional(), ItemsByNamePath: z.string().nullable().optional(), CachePath: z.string().nullable().optional(), LogPath: z.string().nullable().optional(), InternalMetadataPath: z.string().nullable().optional(), TranscodingTempPath: z.string().nullable().optional(), HasUpdateAvailable: z.boolean().optional(), EncoderLocation: fFmpegLocation.optional(), SystemArchitecture: architecture.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
};

/**
 * Gets information about the server.
 * 
 * GET /System/Info
 */
export const getApiSystemInfo = async (options?: GetApiSystemInfoOptions) => {
const {baseUrl = "http://localhost", fetch: fetchFn = fetch, CustomAuthentication} = options ?? {}

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

if (CustomAuthentication !== undefined) headers.set("X-Emby-Authorization", CustomAuthentication)

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