import { Stack, StackProps, CfnOutput } from 'aws-cdk-lib';
import { Construct } from 'constructs';
import { LiveChannelFromMp4 } from 'awscdk-construct-live-channel-from-mp4-file';
import { InputSwitchScheduler } from 'awscdk-construct-input-switch-scheduler';

export class ExampleStack extends Stack {
  constructor(scope: Construct, id: string, props?: StackProps) {
    super(scope, id, props);

    // Create a live channel (MediaLive + MediaPackage)
    const {eml, empv1: emp} = new LiveChannelFromMp4(this, 'LiveChannelFromMp4', {
      sourceUrl: [
        's3ssl://example_bucket/test-1.mp4',
        's3ssl://example_bucket/test-2.mp4',
      ],
      autoStart: true,
    });

    // Perform input switch every 15 minutes
    new InputSwitchScheduler(this, 'InputSwitchScheduler', {
      channelId: eml.channel.ref,
      inputAttachments: eml.channel.inputAttachments?.map(({inputAttachmentName}) => inputAttachmentName),
      intervalInMinutes: 15,
    });

    // Print MediaPackage endpoint URL (HLS)
    new CfnOutput(this, "MediaPackageEndpointURL", {
      value: emp.endpoints.hls.attrUrl,
      exportName: "MediaPackageEndpointURL",
      description: "MediaPackage endpoint URL",
    });
  }
}