fix(cloudwatch): fix DescribeAlarms returning only MetricAlarm when "All Types" selected

Per AWS docs, omitting AlarmTypes returns only MetricAlarm. Now explicitly
sends both MetricAlarm and CompositeAlarm when no filter is selected.

Also fix dimensions JSON parse errors returning 500 instead of 400 in
get-metric-statistics route.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/api/tools/cloudwatch/describe-alarms/route.ts

@@ -51,7 +51,9 @@ export async function POST(request: NextRequest) {
     const command = new DescribeAlarmsCommand({
       ...(validatedData.alarmNamePrefix && { AlarmNamePrefix: validatedData.alarmNamePrefix }),
       ...(validatedData.stateValue && { StateValue: validatedData.stateValue as StateValue }),
-      ...(validatedData.alarmType && { AlarmTypes: [validatedData.alarmType as AlarmType] }),
+      AlarmTypes: validatedData.alarmType
+        ? [validatedData.alarmType as AlarmType]
+        : (['MetricAlarm', 'CompositeAlarm'] as AlarmType[]),
       ...(validatedData.limit !== undefined && { MaxRecords: validatedData.limit }),
     })
 

apps/sim/app/api/tools/cloudwatch/get-metric-statistics/route.ts

@@ -53,7 +53,7 @@ export async function POST(request: NextRequest) {
           }))
         }
       } catch {
-        throw new Error('Invalid dimensions JSON')
+        return NextResponse.json({ error: 'Invalid dimensions JSON format' }, { status: 400 })
       }
     }