import {z} from 'zod'

export type AddControlFromLibraryInput = {controlId: string};

export type CreateApiControlsAddFromLibraryArgs = {body: AddControlFromLibraryInput};

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

export const controlSource = z.enum(["Vanta", "Custom"]);

export const owner = z.object({id: z.string(), displayName: z.string(), emailAddress: z.string()});

export const customField = z.object({label: z.string(), value: z.union([z.string(), z.array(z.string())])});

export const control = z.object({id: z.string(), externalId: z.string().nullable(), name: z.string(), description: z.string(), source: controlSource, domains: z.array(z.string()), owner: owner.nullable(), role: z.string().nullable().optional(), customFields: z.array(customField), creationDate: z.string().nullable(), modificationDate: z.string().nullable()});

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
};

/**
 * Add control from Vanta library
 * 
 * POST /controls/add-from-library
 */
export const createApiControlsAddFromLibrary = async (args: CreateApiControlsAddFromLibraryArgs, options?: CreateApiControlsAddFromLibraryOptions) => {
const {baseUrl = "https://api.vanta.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/controls/add-from-library${query.size > 0 ? `?${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(control, await res.json())
};