name: Build and Push Docker Image

on:
  push:
    tags:
      - 'v*.*.*'

env:
  IMAGE_NAME: grist-mcp

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

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

      - name: Determine registry
        id: registry
        run: |
          if [ "${GITEA_ACTIONS}" = "true" ]; then
            # Gitea: use server URL as registry
            REGISTRY="${{ github.server_url }}"
            REGISTRY="${REGISTRY#https://}"
            REGISTRY="${REGISTRY#http://}"
            echo "registry=${REGISTRY}" >> $GITHUB_OUTPUT
            echo "is_gitea=true" >> $GITHUB_OUTPUT
          else
            # GitHub: use GHCR
            echo "registry=ghcr.io" >> $GITHUB_OUTPUT
            echo "is_gitea=false" >> $GITHUB_OUTPUT
          fi

      - name: Log in to GitHub Container Registry
        if: steps.registry.outputs.is_gitea == 'false'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Log in to Gitea Container Registry
        if: steps.registry.outputs.is_gitea == 'true'
        uses: docker/login-action@v3
        with:
          registry: ${{ steps.registry.outputs.registry }}
          username: ${{ github.actor }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Extract metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ steps.registry.outputs.registry }}/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=raw,value=latest

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max