name: Clean up ECS
description: This deletes ECR images, task definitions, and the ECS service.

runs:
  using: "composite"
  steps:
    - run: |
        ECR_IMAGE_TAG=${{ env.PROJECT }}-${{ env.PR_NUMBER }}

        ECR_SEED_IMAGE_TAG=${{ env.PROJECT }}-seed-${{ env.PR_NUMBER }}

        aws ecr batch-delete-image \
        --repository-name $ECR_REPO \
        --image-ids imageTag=$ECR_IMAGE_TAG imageTag=$ECR_SEED_IMAGE_TAG \
        --query 'imageIds[*].imageTag'
      shell: bash
    - run: |
        TASK_FAMILY=$PROJECT-$PR_NUMBER

        APP_TASK_ARN=$(aws ecs list-task-definitions \
        --family-prefix $TASK_FAMILY \
        --query 'taskDefinitionArns[0]' \
        --output text)

        aws ecs deregister-task-definition \
        --task-definition $APP_TASK_ARN \
        --query 'taskDefinition.taskDefinitionArn'
      shell: bash
    - run: |
        SETUP_TASK_FAMILY=$PROJECT-setup-$PR_NUMBER

        SETUP_TASK_ARN=$(aws ecs list-task-definitions \
        --family-prefix $SETUP_TASK_FAMILY \
        --query 'taskDefinitionArns[0]' \
        --output text)

        aws ecs deregister-task-definition \
        --task-definition $SETUP_TASK_ARN \
        --query 'taskDefinition.taskDefinitionArn'
      shell: bash
    - run: |
        echo "Deleting load balancer rules and target group"

        ALB_ARN=$(aws elbv2 describe-load-balancers \
        --query 'LoadBalancers[?LoadBalancerName==`gander-apps`] | [0].LoadBalancerArn' \
        --output text)

        LISTENER_ARN=$(aws elbv2 describe-listeners \
        --load-balancer-arn $ALB_ARN \
        --query 'Listeners[?Port==`80`] | [0].ListenerArn' \
        --output text)

        RULE_ARN=$(aws elbv2 describe-rules \
        --listener-arn $LISTENER_ARN \
        --query "Rules[?Conditions[?Values[?contains(@, '$PROJECT-$PR_NUMBER')]]].RuleArn | [0]" \
        --output text)

        aws elbv2 delete-rule \
        --rule-arn $RULE_ARN

        TARGET_GROUP_ARN=$(aws elbv2 describe-target-groups \
        --names Gander-$PROJECT-$PR_NUMBER \
        --query 'TargetGroups[0].TargetGroupArn' \
        --output text)

        aws elbv2 delete-target-group \
        --target-group-arn $TARGET_GROUP_ARN

      shell: bash

    - run: |
        ECS_SERVICE_NAME=$(aws ecs list-services \
        --cluster $PROJECT \
        --query 'serviceArns[*]' \
        | grep -o "$PROJECT-$PR_NUMBER[^\"]*")

        aws ecs delete-service \
        --cluster $PROJECT \
        --service $ECS_SERVICE_NAME \
        --force \
        --query 'service.serviceName'
      shell: bash