cd.yml

name: CD

on:
  push:
    branches: [ main ]

  workflow_dispatch:

jobs:
  continuous-delivery:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set up JDK 17
        uses: actions/setup-java@v3
        with:
          java-version: 17
          distribution: 'corretto'

      - name: Set YML
        env:
          YAML_SECRET: ${{ secrets.APPLICATION_YAML }}
          YAML_DIR: src/main/resources
          YAML_FILE_NAME: application.yml
        run: |
          mkdir -p $YAML_DIR
          echo $YAML_SECRET | base64 --decode > $YAML_DIR/$YAML_FILE_NAME
          find src

      - name: Gradle Caching
        uses: actions/cache@v3
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Get Short SHA
        id: short_sha
        run: |
          echo "::set-output name=sha_short::$(echo ${{ github.sha }} | head -c 7)"
          echo "Short SHA: ${{ steps.short_sha.outputs.sha_short }}"
          
      - name: Print branch & tag information
        run: |
          echo "Current branch: ${{ github.event.inputs.branch || github.ref }}"
          echo "Current tag: ${{ steps.short_sha.outputs.sha_short }}"

      - name: Grant execute permission for gradlew
        run: chmod +x ./gradlew
        shell: bash

      - name: Run build
        run: ./gradlew build -x test
        shell: bash

      - name: Docker Login and Push
        env:
          DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_USERNAME }}
          DOCKER_HUB_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
          DOCKER_IMAGE_TAG: test:${{ steps.short_sha.outputs.sha_short }}
        run: |
          echo $DOCKER_HUB_PASSWORD | docker login -u $DOCKER_HUB_USERNAME --password-stdin
          docker build -t $DOCKER_IMAGE_TAG .
          docker tag $DOCKER_IMAGE_TAG $DOCKER_HUB_USERNAME/$DOCKER_IMAGE_TAG
          docker push $DOCKER_HUB_USERNAME/$DOCKER_IMAGE_TAG

      - name: Deploy to EC2
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.EC2_HOST }}
          username: ${{ secrets.EC2_USERNAME }}
          key: ${{ secrets.EC2_PEM_KEY }}
          script: |
            docker pull ${{ secrets.DOCKER_USERNAME }}/test:${{ steps.short_sha.outputs.sha_short }}
            docker tag ${{ secrets.DOCKER_USERNAME }}/test:${{ steps.short_sha.outputs.sha_short }} test
            docker rm -f test || true
            docker run -d --name test -e TZ=Asia/Seoul -p 8080:8080 ${{ secrets.DOCKER_USERNAME }}/test:${{ steps.short_sha.outputs.sha_short }}