name: Build Docker Linux ARM64

on:
  push:
    branches:
      - main

jobs:
  build-docker-linux-arm64:
    runs-on: [self-hosted, linux, arm64, docker]
    steps:
      - name: Install packages
        run: apk add --no-cache git curl wget unzip bash nodejs npm docker

      - name: Checkout
        uses: actions/checkout@v4
        
      - name: Setup Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Get Repository Name
        id: get_repo
        run: |
          REPO_LC="${GITHUB_REPOSITORY,,}" 
          echo "REPO_LC=$REPO_LC" >> $GITHUB_ENV
          echo "Repo: $REPO_LC"
          
      - name: Build version
        shell: bash
        run: |
          set -euo pipefail

          git fetch --force --tags origin
          git fetch --force origin main

          LAST_TAG=$(git tag -l 'v*' --sort=-version:refname | head -n 1)

          if [[ -z "$LAST_TAG" ]]; then
            LAST_TAG="v0.0.1-alpha"
            DISTANCE=$(git rev-list --count origin/main)
          else
            DISTANCE=$(git rev-list "${LAST_TAG}..origin/main" --count)
          fi

          BASE_VERSION="${LAST_TAG#v}"

          if [[ "$BASE_VERSION" == *-* ]]; then
            VERSION="${BASE_VERSION}.${DISTANCE}"
          else
            VERSION="${BASE_VERSION}-nightly.${DISTANCE}"
          fi

          echo "LAST_TAG=$LAST_TAG" >> "$GITHUB_ENV"
          echo "DISTANCE=$DISTANCE" >> "$GITHUB_ENV"
          echo "VERSION=$VERSION" >> "$GITHUB_ENV"

          echo "Last tag: $LAST_TAG"
          echo "Distance to origin/main: $DISTANCE"
          echo "Final version: $VERSION"
          
      - name: Set .NET version variables
        shell: bash
        run: |
          set -euo pipefail

          SEMVER="${VERSION}"
          BASE_NUMERIC=$(echo "$SEMVER" | sed -E 's/^([0-9]+\.[0-9]+\.[0-9]+).*/\1/')
          BUILD_NO=$(echo "$SEMVER" | grep -oE '[0-9]+$' || echo "0")

          echo "PACKAGE_VERSION=$SEMVER" >> "$GITHUB_ENV"
          echo "ASSEMBLY_VERSION=${BASE_NUMERIC}.0" >> "$GITHUB_ENV"
          echo "FILE_VERSION=${BASE_NUMERIC}.${BUILD_NO}" >> "$GITHUB_ENV"
          echo "INFORMATIONAL_VERSION=$SEMVER" >> "$GITHUB_ENV"
          
      - name: Build Linux ARM64 Docker Image
        run: |
          docker build \
            -t gitea.penry.de/${{ env.REPO_LC }}:nightly \
            --build-arg VERSION=${{ env.PACKAGE_VERSION }}
            .
      
      - name: Login to own image registry
        uses: docker/login-action@v3
        with:
          registry: gitea.penry.de
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_PASSWORD }}
      
      - name: Push Images
        run: |
          docker push gitea.penry.de/${{ env.REPO_LC }}:nightly

      - name: Save Docker Image to Tar
        run: docker save -o CouchLog-Linux-ARM64-Docker-Image.tar gitea.penry.de/${{ env.REPO_LC }}:nightly

      - name: Upload Artifact
        uses: actions/upload-artifact@v3
        with:
          name: CouchLog-Linux-ARM64-Docker-Image
          path: CouchLog-Linux-ARM64-Docker-Image.tar
          if-no-files-found: error
          retention-days: 5