name: Daily Update Pipeline

on:
  schedule:
    # Runs every day at 3:00 AM UTC
    - cron: '0 3 * * *'
  workflow_dispatch: # Allows manual triggering

jobs:
  check-images:
    runs-on: ubuntu-latest
    outputs:
      base_image_digest: ${{ steps.mlflow-base.outputs.digest }}
      should_build: ${{ steps.decision.outputs.should_build }}
    steps:
    - name: Log in to Gitea Container Registry
      run: |
        mkdir -p ~/.docker
        echo '{"insecure-registries": ["10.0.0.2:3000"]}' > ~/.docker/config.json
        echo "${{ secrets.CI_RUNNER_TOKEN }}" | docker login 10.0.0.2:3000 --username "${{ gitea.actor }}" --password-stdin
    - name: Check MLflow-full base image digest
      id: mlflow-full
      run: |
        MANIFEST=$(docker manifest inspect "gitea.gt-proj.com/brian/mlflow-full:latest" 2>/dev/null || echo "{}")
        if [ "$MANIFEST" == "{}" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "MLflow-full manifest not found"
          exit 1
        fi
        # Extract digest for linux/amd64 platform
        DIGEST=$(echo "$MANIFEST" | jq -r '.manifests[]? | select(.platform.architecture == "amd64" and .platform.os == "linux") | .digest // empty')
        if [ -z "$DIGEST" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "No suitable manifest found for linux/amd64"
          exit 1
        fi
        # Get the manifest for the specific platform
        PLATFORM_MANIFEST=$(curl -s -H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
          -H "Authorization: Bearer ${{ secrets.CI_RUNNER_TOKEN }}" \
          "https://gitea.gt-proj.com/v2/brian/mlflow-full/manifests/$DIGEST" 2>/dev/null || echo "{}")
        if [ "$PLATFORM_MANIFEST" == "{}" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "Failed to fetch platform-specific manifest"
          exit 1
        fi
        # Extract config blob digest
        CONFIG_DIGEST=$(echo "$PLATFORM_MANIFEST" | jq -r '.config.digest // empty')
        if [ -z "$CONFIG_DIGEST" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "No config digest found in platform manifest"
          exit 1
        fi
        # Fetch the configuration blob to get labels
        CONFIG_BLOB=$(curl -s "http://gitea.gt-proj.com/v2/brian/mlflow-full/blobs/$CONFIG_DIGEST" 2>/dev/null || echo "{}")
        if [ "$CONFIG_BLOB" == "{}" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "Failed to fetch config blob"
          exit 1
        fi
        # Extract base image digest label from config
        BASE_IMAGE_DIGEST=$(echo "$CONFIG_BLOB" | jq -r '.config.Labels["base-image.digest"] // empty')
        if [ -z "$BASE_IMAGE_DIGEST" ]; then
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "No base-image.digest label found in MLflow-full image"
          exit 1
        fi
        echo "base_image_digest=$BASE_IMAGE_DIGEST" >> $GITHUB_OUTPUT
        echo "digest_found=true" >> $GITHUB_OUTPUT
        echo "Base image digest from MLflow-full image: $BASE_IMAGE_DIGEST"
    - name: Check MLflow base image digest
      id: mlflow-base
      if: steps.mlflow-full.outputs.digest_found == 'true'
      run: |
        MANIFEST=$(docker manifest inspect ghcr.io/mlflow/mlflow:latest 2>/dev/null || echo "{}")
        if [ "$MANIFEST" != "{}" ]; then
          DIGEST=$(echo "$MANIFEST" | jq -r '.manifests[]? | select(.platform.architecture == "amd64" and .platform.os == "linux") | .digest // empty')
          echo "digest=$DIGEST" >> $GITHUB_OUTPUT
          echo "digest_found=true" >> $GITHUB_OUTPUT
          echo "Digest found for MLflow base image: $DIGEST"
        else
          echo "digest_found=false" >> $GITHUB_OUTPUT
          echo "MLflow base image not found"
        fi
    - name: Build decision
      id: decision
      run: |
        if [ "${{ steps.mlflow-base.outputs.manifest_found }}" == "true" ] && \
           [ "${{ steps.mlflow-full.outputs.manifest_found }}" == "true" ]; then
          echo "✅ Both MLflow base and MLflow-full images found"
          if [ "${{ steps.mlflow-base.outputs.digest }}" != "${{ steps.mlflow-full.outputs.base_image_digest }}" ]; then
            echo "Base image digest has changed"
            echo "should_build=true" >> $GITHUB_OUTPUT
          else
            echo "Base image digest is unchanged"
            echo "should_build=false" >> $GITHUB_OUTPUT
          fi
        elif [ "${{ steps.mlflow-base.outputs.manifest_found }}" != "true" ]; then
          echo "❌ MLflow base image not found"
          echo "should_build=false" >> $GITHUB_OUTPUT
        else
          echo "❌ MLflow-full image not found"
          echo "should_build=false" >> $GITHUB_OUTPUT
        fi
  build-and-publish:
    needs: check-images
    if: needs.check-images.outputs.should_build == 'true'
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
      with:
        config-inline: |
          [registry."10.0.0.2:3000"]
            http = true
            insecure = true
    - name: Log in to Gitea Container Registry  
      run: |
        # Configure Docker to allow insecure registry for this session
        mkdir -p ~/.docker
        echo '{
          "auths": {},
          "insecure-registries": ["10.0.0.2:3000"]
        }' > ~/.docker/config.json
        
        # Login using direct docker command
        echo "${{ secrets.CI_RUNNER_TOKEN }}" | docker login 10.0.0.2:3000 --username "${{ gitea.actor }}" --password-stdin
    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: 10.0.0.2:3000/${{ gitea.repository_owner }}/${{ gitea.event.repository.name }}
        tags: |
          type=schedule,pattern={{date 'YYYYMMDD'}}
          type=raw,value=latest
        labels: |
          base-image.digest=${{ needs.check-images.outputs.base_image_digest }}
    - name: Build and push Docker image
      id: build-publish
      uses: docker/build-push-action@v5
      with:
        context: .
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max
        build-args: |
          BASE_IMAGE_DIGEST=${{ needs.check-images.outputs.base_image_digest }}
    - name: Update deployment info
      run: |
        echo "Docker image built and pushed successfully at $(date)"
        echo "Image tags:"
        echo "${{ steps.meta.outputs.tags }}"