import {z} from 'zod'

export type ResourceReference = {href: string};

export type TaskEnterMaintenance = {type: 'enter_maintenance', target: ResourceReference | string, parameters?: ({maximum_duration?: number | undefined}) | undefined};

export type TaskExitMaintenance = {type: 'exit_maintenance', target: ResourceReference | string, parameters?: Record<string, never> | undefined};

export type ApplicationHref = string;

export type Timestamp = string;

export type TaskGenerateOriginCertificate = {type: 'generate-origin-certificate', target: ApplicationHref, parameters: {key: string, hostnames?: Array<string> | undefined, expiry?: Timestamp | undefined}};

export type InvalidateCacheUrl = string;

export type TagName = string;

export type TaskInvalidateCache = {type: 'invalidate-cache', target: ResourceReference | string, parameters: {urls: Array<InvalidateCacheUrl>, tags?: Array<TagName> | undefined}};

export type TaskOauth2Authorize = {type: 'oauth2-authorize', parameters: {code?: string | undefined, realm_id?: string | undefined}};

export type TaskRunAction = {type: 'run-action', target: ResourceReference | string, parameters: {id?: string | undefined}};

export type TaskStart = {type: 'start', target: ResourceReference | string};

export type TaskStop = {type: 'stop', target: ResourceReference | string};

export type TaskValidateTLS = {type: 'validate_tls', parameters: {tls_configuration?: Record<string, never> | undefined}};

export type SearchParameters = {type?: 'search' | undefined, parameters?: ({pattern: string, limit?: number | undefined}) | undefined};

export type PrepareForDownload = {type?: 'prepare-for-download' | undefined, parameters?: ({reference: string, from: Timestamp, to: Timestamp, retention?: number | undefined, restore_type?: ('bulk' | 'standard' | 'expedited') | undefined}) | undefined};

export type TaskPost = TaskEnterMaintenance | TaskExitMaintenance | TaskGenerateOriginCertificate | TaskInvalidateCache | TaskOauth2Authorize | TaskRunAction | TaskStart | TaskStop | TaskValidateTLS | SearchParameters | PrepareForDownload;

export type CreateApiTasksArgs = {body: TaskPost};

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

export const billingService = z.union([z.unknown(), z.object({type: z.literal("quickbooks"), quickbooks_id: z.number().int()})]);

export const accountLogRetention = z.object({type: z.literal("events"), online_days: z.number().int().gte(1).optional(), archive_days: z.number().int().gte(1).optional(), online_space_allowance: z.number().int().gte(1).optional(), archive_space_allowance: z.number().int().gte(1).optional()});

export const accountHref = z.string();

export const account = z.object({billing_service: billingService.optional(), stratus_id: z.string().nullable().optional(), name: z.string().optional(), log_retention: z.array(accountLogRetention).optional(), href: accountHref, id: z.string()});

export const searchResult = z.object({matches: z.array(z.object({account: account.optional(), subject: z.object({}).optional()})).optional()});

export const task = z.object({href: z.string().optional(), type: z.string().optional(), target: z.string().optional(), parameters: z.object({}).optional(), created: z.string().optional(), started: z.string().optional(), completed: z.string().optional(), updated: z.string().optional(), state: z.enum(["pending", "running", "success", "failed"]).optional(), description: z.string().optional(), message: z.string().optional(), result: z.union([z.object({}), searchResult]).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
};

/**
 * Execute a task against a resource
 * 
 * POST /tasks
 */
export const createApiTasks = async (args: CreateApiTasksArgs, options?: CreateApiTasksOptions) => {
const {baseUrl = "https://api.webscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

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