# Development channel for the main DSH Web image: every merge to main that
# touches the image definition publishes ghcr.io/<owner>/<repo>:main.
# Releases are published by release.yaml with immutable version tags.
name: Build main image

on:
  workflow_dispatch:
  push:
    branches: [main]
    paths:
      - Dockerfile
      - versions.env
      - .github/workflows/build-main.yaml
      - .github/workflows/_build-image.yaml

# Write scopes are granted to the build job only; every other job stays read-only.
permissions:
  contents: read

concurrency:
  group: build-main-${{ github.ref }}
  cancel-in-progress: true

jobs:
  meta:
    name: Read versions
    runs-on: ubuntu-latest
    timeout-minutes: 5
    outputs:
      identity: ${{ steps.meta.outputs.identity }}
      dsh_version: ${{ steps.meta.outputs.dsh_version }}
      pnpm_version: ${{ steps.meta.outputs.pnpm_version }}
      release_revision: ${{ steps.meta.outputs.release_revision }}
      ghcr_image: ${{ steps.meta.outputs.ghcr_image }}
      gateway_image: ${{ steps.meta.outputs.gateway_image }}
    steps:
      - name: Checkout
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Read versions.env
        id: meta
        shell: bash
        run: |
          set -euo pipefail
          set -a
          # shellcheck disable=SC1091
          source versions.env
          set +a
          identity="$DSH_VERSION"
          [ -z "$RELEASE_REVISION" ] || identity="$DSH_VERSION-$RELEASE_REVISION"
          {
            echo "identity=$identity"
            echo "dsh_version=$DSH_VERSION"
            echo "pnpm_version=$PNPM_VERSION"
            echo "release_revision=$RELEASE_REVISION"
            echo "ghcr_image=$GHCR_IMAGE"
            echo "gateway_image=$GATEWAY_IMAGE"
          } >> "$GITHUB_OUTPUT"

  build:
    name: Build and push main image
    needs: meta
    uses: ./.github/workflows/_build-image.yaml
    permissions:
      contents: read
      packages: write
      id-token: write
      attestations: write
    with:
      image: ${{ needs.meta.outputs.ghcr_image }}
      version: ${{ needs.meta.outputs.identity }}
      context: .
      dockerfile: Dockerfile
      build-args: |
        DSH_VERSION=${{ needs.meta.outputs.dsh_version }}
        RELEASE_REVISION=${{ needs.meta.outputs.release_revision }}
        PNPM_VERSION=${{ needs.meta.outputs.pnpm_version }}
        VCS_REF=${{ github.sha }}
      tags: |
        ${{ needs.meta.outputs.ghcr_image }}:main