name: Build and Push Minecraft Docker Images on Debian-base update

on:
  push:
    branches:
      - master
  schedule:
    - cron: '30 */6 * * *'  # Every 6 hours at :30 UTC

env:
  IMAGE_REGISTRY: gitea.fithwum.tech
  IMAGE_ORG: fithwum
  IMAGE_REPO_DEBIAN: debian-base
  IMAGE_REPO_MINECRAFT: minecraft
  IMAGE_TAG_DEBIAN: bookworm
  DIGEST_FILE: .cache/debian-base.digest

jobs:
  poll-debian-base-and-build:
    runs-on: docker-build

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Ensure .cache exists with .gitkeep
        run: |
          mkdir -p .cache
          touch .cache/.gitkeep

      - name: Log in to Gitea Registry
        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login ${{ env.IMAGE_REGISTRY }} -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin

      - name: Get current digest of debian-base image
        id: get_digest
        run: |
          IMAGE="${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_ORG }}/${{ env.IMAGE_REPO_DEBIAN }}:${{ env.IMAGE_TAG_DEBIAN }}"
          echo "Checking image: $IMAGE"
          docker pull "$IMAGE" > /dev/null
          DIGEST=$(docker inspect --format='{{index .RepoDigests 0}}' "$IMAGE" 2>/dev/null || echo "")
          if [ -z "$DIGEST" ]; then
            echo "Failed to get digest for $IMAGE"
            exit 1
          fi
          echo "digest=$DIGEST" >> $GITHUB_OUTPUT
          echo "$DIGEST" > .cache/debian-base.digest.new

      - name: Compare with stored digest
        id: compare_digest
        run: |
          CURRENT_DIGEST="${{ steps.get_digest.outputs.digest }}"
          LAST_DIGEST=""

          if [ -f "${{ env.DIGEST_FILE }}" ]; then
            LAST_DIGEST=$(cat "${{ env.DIGEST_FILE }}")
          fi

          echo "Current digest: $CURRENT_DIGEST"
          echo "Last digest: $LAST_DIGEST"

          if [ "$CURRENT_DIGEST" = "$LAST_DIGEST" ]; then
            echo "Digest unchanged. Skipping build."
            echo "changed=false" >> $GITHUB_OUTPUT
          else
            echo "Digest changed or first run."
            echo "$CURRENT_DIGEST" > "${{ env.DIGEST_FILE }}"
            git config user.name "${{ secrets.GIT_USERNAME }}"
            git config user.email "${{ secrets.GIT_EMAIL }}"
            git add "${{ env.DIGEST_FILE }}"
            git commit -m "Update debian-base image digest to $CURRENT_DIGEST" || echo "No changes to commit"
            git push
            echo "changed=true" >> $GITHUB_OUTPUT
          fi

      - name: Build and Push Minecraft Docker Images
        if: steps.compare_digest.outputs.changed == 'true'
        env:
          IMAGE_TAG_VANILLA: vanilla
          IMAGE_TAG_TESTING: testing
          IMAGE_TAG_FABRIC: fabric
          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
        run: |
          echo "${DOCKER_PASSWORD}" | docker login $IMAGE_REGISTRY -u "${DOCKER_USERNAME}" --password-stdin

          for TAG in $IMAGE_TAG_VANILLA $IMAGE_TAG_TESTING $IMAGE_TAG_FABRIC; do
            IMAGE="$IMAGE_REGISTRY/$IMAGE_ORG/$IMAGE_REPO_MINECRAFT:$TAG"
            echo "[INFO] Building and pushing $IMAGE"
            docker buildx build --platform linux/amd64 --push -t "$IMAGE" "./$TAG"
          done

























# name: Build and Push Minecraft Docker Images

# on:
#   push:
#     branches:
#       - master

# jobs:
#   build:
#     runs-on: docker-build

#     steps:
#       - name: Checkout code
#         uses: actions/checkout@v3

#       - name: Set image tags and names
#         id: vars
#         run: |
#           IMAGE_REGISTRY=gitea.fithwum.tech
#           IMAGE_ORG=fithwum
#           IMAGE_REPO=minecraft
          
#           # Set the tag based on the folder name (vanilla, TESTING, fabric)
#           IMAGE_TAG_VANILLA=vanilla
#           IMAGE_TAG_TESTING=testing
#           IMAGE_TAG_FABRIC=fabric

#           echo "IMAGE_TAG_VANILLA=${IMAGE_TAG_VANILLA}" >> $GITHUB_ENV
#           echo "IMAGE_TAG_TESTING=${IMAGE_TAG_TESTING}" >> $GITHUB_ENV
#           echo "IMAGE_TAG_FABRIC=${IMAGE_TAG_FABRIC}" >> $GITHUB_ENV
          
#           # Set image names for each subfolder Dockerfile
#           IMAGE_VANILLA=${IMAGE_REGISTRY}/${IMAGE_ORG}/${IMAGE_REPO}:${IMAGE_TAG_VANILLA}
#           IMAGE_TESTING=${IMAGE_REGISTRY}/${IMAGE_ORG}/${IMAGE_REPO}:${IMAGE_TAG_TESTING}
#           IMAGE_FABRIC=${IMAGE_REGISTRY}/${IMAGE_ORG}/${IMAGE_REPO}:${IMAGE_TAG_FABRIC}

#           echo "IMAGE_VANILLA=${IMAGE_VANILLA}" >> $GITHUB_ENV
#           echo "IMAGE_TESTING=${IMAGE_TESTING}" >> $GITHUB_ENV
#           echo "IMAGE_FABRIC=${IMAGE_FABRIC}" >> $GITHUB_ENV

#       - name: Set up Docker Buildx
#         uses: docker/setup-buildx-action@v3

#       - name: Log in to Gitea Registry
#         run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login gitea.fithwum.tech -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin

#       # Build and Push Vanilla Docker Image
#       - name: Build and Push Vanilla Docker Image
#         run: |
#           docker buildx build --platform linux/amd64 --push -t ${{ env.IMAGE_VANILLA }} ./vanilla

#       # Build and Push Testing Docker Image
#       - name: Build and Push Testing Docker Image
#         run: |
#           docker buildx build --platform linux/amd64 --push -t ${{ env.IMAGE_TESTING }} ./testing

#       # Build and Push Fabric Docker Image
#       - name: Build and Push Fabric Docker Image
#         run: |
#           docker buildx build --platform linux/amd64 --push -t ${{ env.IMAGE_FABRIC }} ./fabric