feat(api): show a user pool's Lambda triggers

packages/api/src/adapter-aws/AwsUserPoolsAdapter.test.ts

@@ -125,9 +125,31 @@ describe('AwsUserPoolsAdapter', () => {
             mfaConfiguration: 'OFF',
             deletionProtection: 'INACTIVE',
             appClients: [{clientId: 'a8e5c7d38d3b4a1a97c9d822de', clientName: 'orders-users-client'}],
+            lambdaTriggers: [],
         })
     })
 
+    test('lists the pool\'s Lambda triggers in sign-in order, with the trigger version when set', async () => {
+        const arn = (name: string) => `arn:aws:lambda:us-east-1:000000000000:function:${name}`
+        const {client} = stubCognito((command) => {
+            if (command instanceof DescribeUserPoolCommand) return {UserPool: {...pool, LambdaConfig: {
+                PreTokenGeneration: arn('claims'),
+                PreTokenGenerationConfig: {LambdaArn: arn('claims'), LambdaVersion: 'V2_0'},
+                PreSignUp: `${arn('signup')}:live`,
+                CustomEmailSender: {LambdaArn: arn('mailer'), LambdaVersion: 'V1_0'},
+                KMSKeyID: 'arn:aws:kms:us-east-1:000000000000:key/1',
+            }}}
+            return {}
+        })
+
+        const resource = await new AwsUserPoolsAdapter(client).get(POOL_ID)
+        expect(resource?.metadata.lambdaTriggers).toEqual([
+            {trigger: 'PreSignUp', label: 'Pre sign-up', functionArn: `${arn('signup')}:live`, functionName: 'signup', version: null},
+            {trigger: 'PreTokenGeneration', label: 'Pre token generation', functionArn: arn('claims'), functionName: 'claims', version: 'V2_0'},
+            {trigger: 'CustomEmailSender', label: 'Custom email sender', functionArn: arn('mailer'), functionName: 'mailer', version: 'V1_0'},
+        ])
+    })
+
     test('counts users itself, since the runtime leaves EstimatedNumberOfUsers at 0', async () => {
         const {client} = stubCognito((command) => {
             if (command instanceof DescribeUserPoolCommand) return {UserPool: {...pool, EstimatedNumberOfUsers: 0}}