import {z} from 'zod'

export type PrincipalRef = {kind: 'user' | 'service_account' | 'group' | 'organization', id: string};

export type SharableEntityGrantRequest = {principal: PrincipalRef, role: 'reader' | 'editor' | 'owner' | 'data_reader' | 'data_editor' | 'data_owner'};

export type CreateApiApiSvcRegistrySharableEntitiesModuleResourceIdGrantsArgs = {module: string, resource_id: string, body: SharableEntityGrantRequest};

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

export const principalRef = z.object({kind: z.enum(["user", "service_account", "group", "organization"]), id: z.string().min(1).max(256)});

export const rejectedTupleKey = z.object({user: z.string(), relation: z.string(), object: z.string()});

export const rejectedTuple = z.object({operation: z.enum(["write", "delete"]), tuple: rejectedTupleKey, reason: z.string()});

export const sharableEntityGrantResponseWithFgaWriteReport = z.object({objectId: z.string(), principal: principalRef, role: z.enum(["reader", "editor", "owner", "data_reader", "data_editor", "data_owner"]), rejectedTuples: z.array(rejectedTuple).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
};

/**
 * Grant Sharable Entity Access
 * 
 * POST /api/svc-registry/sharable-entities/{module}/{resource_id}/grants
 */
export const createApiApiSvcRegistrySharableEntitiesModuleResourceIdGrants = async (args: CreateApiApiSvcRegistrySharableEntitiesModuleResourceIdGrantsArgs, options: CreateApiApiSvcRegistrySharableEntitiesModuleResourceIdGrantsOptions) => {
const {baseUrl, 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 = `${baseUrl.replace(/\/+$/, '')}/api/svc-registry/sharable-entities/${encodeURIComponent(String(args.module))}/${encodeURIComponent(String(args.resource_id))}/grants${query.size > 0 ? `?${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(sharableEntityGrantResponseWithFgaWriteReport, await res.json())
};