entrypoint.sh

#!/bin/sh

set -e

BRANCH_NAME=$1
AMPLIFY_COMMAND=$2
COMMENT_URL=$3

if [ -z "$AWS_ACCESS_KEY_ID" ] || [ -z "$AWS_SECRET_ACCESS_KEY" ] ; then
  echo "You must provide the action with both AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables in order to deploy"
  exit 1
fi

if [ -z "$AWS_REGION" ] ; then
  AWS_REGION="us-east-1"
fi

if [ -z "$AmplifyAppId" ] ; then
  echo "You must provide AmplifyAppId environment variable in order to deploy"
  exit 1
fi

if [[ ! -z "$BackendEnvARN" ]] ; then
  backend_env_arg="--backend-environment-arn=${BackendEnvARN}"
else
  backend_env_arg=""
fi

if [[ ! -z "$EnvironmentVariables" ]] ; then
  environment_variables_arg="--environment-variables=${EnvironmentVariables}"
else
  environment_variables_arg=""
fi

if [ -z "$BRANCH_NAME" ] ; then
  echo "You must provide branch name input parameter in order to deploy"
  exit 1
fi

if [ -z "$AMPLIFY_COMMAND" ] ; then
  echo "You must provide amplify_command input parameter in order to deploy"
  exit 1
fi

aws configure --profile amplify-preview-actions <<-EOF > /dev/null 2>&1
${AWS_ACCESS_KEY_ID}
${AWS_SECRET_ACCESS_KEY}
${AWS_REGION}
text
EOF

case $AMPLIFY_COMMAND in

  deploy)
    sh -c "aws amplify create-branch --app-id=${AmplifyAppId} --branch-name=$BRANCH_NAME  \
              ${backend_env_arg} ${environment_variables_arg} --region=${AWS_REGION}"

    sleep 10

    sh -c "aws amplify start-job --app-id=${AmplifyAppId} --branch-name=$BRANCH_NAME --job-type=RELEASE --region=${AWS_REGION}"
    ;;

  delete)
    sh -c "aws amplify delete-branch --app-id=${AmplifyAppId} --branch-name=$BRANCH_NAME --region=${AWS_REGION}"
    ;;

  *)
    echo "amplify command $AMPLIFY_COMMAND is invalid or not supported"
    exit 1
    ;;

esac

aws configure --profile amplify-preview-actions <<-EOF > /dev/null 2>&1
null
null
null
text
EOF

if [ -z "$GITHUB_TOKEN" ] ; then
  echo "Skipping comment as GITHUB_TOKEN not provided"
else 
  SUBDOMAIN_NAME=$(echo $BRANCH_NAME | sed 's/[^a-zA-Z0-9-]/-/')
  curl -X POST $COMMENT_URL -H "Content-Type: application/json" -H "Authorization: token $GITHUB_TOKEN" --data '{ "body": "'"Preview branch generated at https://$SUBDOMAIN_NAME.${AmplifyAppId}.amplifyapp.com"'" }'
fi