import {z} from 'zod'

export type SubjectType = 'user' | 'team';

export type PolicySubject = {subject_type: SubjectType, name: string};

export type Permission = 'admin' | 'write' | 'read';

export type ApplicationAccessPolicy = {subject: PolicySubject, permission: Permission};

export type PatchApiApplicationsOwnerSlugPermissionsArgs = {owner: string, slug: string, body: ApplicationAccessPolicy};

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

export const updateAccepted = z.object({status: 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
};

/**
 * Upsert a new permission to a application
 * 
 * PATCH /applications/{owner}/{slug}/permissions
 * 
 * Also accepts auth: APIKeyAuth
 */
export const patchApiApplicationsOwnerSlugPermissions = async (args: PatchApiApplicationsOwnerSlugPermissionsArgs, options: PatchApiApplicationsOwnerSlugPermissionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, JWTAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/applications/${encodeURIComponent(String(args.owner))}/${encodeURIComponent(String(args.slug))}/permissions${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", 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(updateAccepted, await res.json())
};