| 1 | import * as ci from "@distilled.cloud/aws/cognito-identity"; |
| 2 | import * as Effect from "effect/Effect"; |
| 3 | import * as Layer from "effect/Layer"; |
| 4 | import * as Binding from "../../Binding.ts"; |
| 5 | import { isBindingHost } from "../Lambda/Function.ts"; |
| 6 | import { cognitoMethods } from "./BindingHttp.ts"; |
| 7 | import type { IdentityPool } from "./IdentityPool.ts"; |
| 8 | import { |
| 9 | IdentityPoolAuth, |
| 10 | type GetIdRequest, |
| 11 | type IdentityPoolAuthClient, |
| 12 | } from "./IdentityPoolAuth.ts"; |
| 13 | |
| 14 | /** |
| 15 | * HTTP implementation of {@link IdentityPoolAuth}. The credentials-vending |
| 16 | * flows are unauthenticated (Cognito does not evaluate IAM for them), so the |
| 17 | * deploy-time half only records the binding — no policy statements are |
| 18 | * attached. |
| 19 | */ |
| 20 | export const IdentityPoolAuthHttp = Layer.effect( |
| 21 | IdentityPoolAuth, |
| 22 | Effect.gen(function* () { |
| 23 | const getId = yield* ci.getId; |
| 24 | const getCredentialsForIdentity = yield* ci.getCredentialsForIdentity; |
| 25 | const getOpenIdToken = yield* ci.getOpenIdToken; |
| 26 | const unlinkIdentity = yield* ci.unlinkIdentity; |
| 27 | |
| 28 | return Effect.fn(function* <P extends IdentityPool>(pool: P) { |
| 29 | const IdentityPoolId = yield* pool.identityPoolId; |
| 30 | if (!globalThis.__ALCHEMY_RUNTIME__) { |
| 31 | const host = yield* Binding.Host; |
| 32 | if (isBindingHost(host)) { |
| 33 | // No IAM is required for the public identity flows; the binding is |
| 34 | // recorded so the identity pool deploys before the function. |
| 35 | yield* host.bind`Allow(${host}, AWS.Cognito.IdentityPoolAuth(${pool}))`( |
| 36 | { policyStatements: [] }, |
| 37 | ); |
| 38 | } |
| 39 | } |
| 40 | const methods = cognitoMethods( |
| 41 | "AWS.Cognito.IdentityPoolAuth", |
| 42 | pool.LogicalId, |
| 43 | ); |
| 44 | const authClient: IdentityPoolAuthClient = { |
| 45 | // optional-request operation stays bespoke (the helper's wrapped |
| 46 | // methods take a required request object) |
| 47 | getId: Effect.fn( |
| 48 | `AWS.Cognito.IdentityPoolAuth.getId(${pool.LogicalId})`, |
| 49 | )(function* (request: GetIdRequest = {}) { |
| 50 | return yield* getId({ |
| 51 | ...request, |
| 52 | IdentityPoolId: yield* IdentityPoolId, |
| 53 | }); |
| 54 | }), |
| 55 | getCredentialsForIdentity: methods.plain( |
| 56 | "getCredentialsForIdentity", |
| 57 | getCredentialsForIdentity, |
| 58 | ), |
| 59 | getOpenIdToken: methods.plain("getOpenIdToken", getOpenIdToken), |
| 60 | unlinkIdentity: methods.plain("unlinkIdentity", unlinkIdentity), |
| 61 | }; |
| 62 | return authClient; |
| 63 | }); |
| 64 | }), |
| 65 | ); |