name: Docker Release

on:
  push:
    branches: [main, agent-mode]
    tags: ["v*"]

env:
  REGISTRY: gitea.scoutitsystems.com
  # Gitea container registry: {registry}/{owner}/{image}
  IMAGE: gitea.scoutitsystems.com/woogi/conflict-checker

jobs:
  build-and-push:
    runs-on: self-hosted
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Image tags
        id: meta
        run: |
          short_sha="${GITHUB_SHA:0:7}"
          echo "short_sha=${short_sha}" >> "$GITHUB_OUTPUT"

          {
            echo "tags<<EOF"
            echo "${IMAGE}:sha-${short_sha}"
            if [ "${GITHUB_REF_TYPE}" = "tag" ]; then
              ref_name="${GITHUB_REF_NAME}"
              echo "${IMAGE}:${ref_name}"
              echo "${IMAGE}:${ref_name#v}"
            elif [ "${GITHUB_REF_NAME}" = "main" ]; then
              # Only the stable Classic line publishes :latest.
              echo "${IMAGE}:latest"
            else
              # Feature branches (e.g. agent-mode) publish under a branch tag
              # so they never overwrite the default :latest image.
              branch_tag="${GITHUB_REF_NAME//\//-}"
              echo "${IMAGE}:${branch_tag}"
            fi
            echo "EOF"
          } >> "$GITHUB_OUTPUT"
        env:
          IMAGE: ${{ env.IMAGE }}
          GITHUB_SHA: ${{ github.sha }}
          GITHUB_REF_TYPE: ${{ github.ref_type }}
          GITHUB_REF_NAME: ${{ github.ref_name }}

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

      - name: Log in to Gitea Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}

  release:
    needs: build-and-push
    if: github.ref_type == 'tag'
    runs-on: self-hosted
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Publish Gitea release
        uses: https://gitea.com/actions/gitea-release-action@v1
        env:
          NODE_OPTIONS: "--experimental-fetch"
        with:
          token: ${{ secrets.REGISTRY_TOKEN }}
          tag_name: ${{ github.ref_name }}
          name: Conflict Checker ${{ github.ref_name }}
          body: |
            ## Docker

            ```bash
            docker login gitea.scoutitsystems.com
            docker pull gitea.scoutitsystems.com/woogi/conflict-checker:${{ github.ref_name }}
            ```

            Deploy on a host (with `docker-compose.prod.yml` and `backend/.env`):

            ```bash
            IMAGE_TAG=${{ github.ref_name }} docker compose -f docker-compose.prod.yml up -d
            ```