import {z} from 'zod'

export type GetApiPermissionsPermissionArgs = {permission: string};

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

export const permission = z.object({attributes: z.object({"applicable-scopes": z.array(z.enum(["account", "environment", "workspace"])).optional(), description: z.string().nullable().optional()}).optional(), id: z.string().optional(), links: z.record(z.string(), z.string()).optional(), type: z.literal("permissions")});

export const permissionDocument = z.object({data: permission.optional(), included: z.array(z.object({})).optional(), meta: z.object({}).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
};

/**
 * Get a Permission
 * 
 * GET /permissions/{permission}
 */
export const getApiPermissionsPermission = async (args: GetApiPermissionsPermissionArgs, options?: GetApiPermissionsPermissionOptions) => {
const {baseUrl = "https://example.scalr.io/api/iacp/v3", fetch: fetchFn = fetch, APIKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/permissions/${encodeURIComponent(String(args.permission))}${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(permissionDocument, await res.json())
};