---
name: Docker Build
on:
  workflow_call:
    inputs:
      dockerfile:
        description: 'Path to Dockerfile'
        required: true
        type: string
      context:
        description: 'Build context'
        default: '.'
        required: false
      image:
        description: 'Where to store the built image'
        required: true
        type: string
      submodules:
        description: 'Submodules pull strategy'
        default: 'recursive'
        required: false
        type: string
      user:
        description: 'Git user for checkout'
        default: 'automation'
        required: false
        type: string
      token:
        description: 'Git token for checkout'
        required: true
        type: string
    outputs:
      tag: 
        description: 'Built image tag'
        value: ${{ jobs.build.outputs.tag }}
      image:
        description: 'Built image name'
        value: ${{ jobs.build.outputs.image }}
      sha:
        description: 'Git SHA used for the build'
        value: ${{ jobs.build.outputs.sha }}
jobs:
  build:
    name: Build Docker Image
    steps:
      - name: Checkout repository
        uses: actions/checkout@v5
        with:
          submodules: ${{ inputs.submodules }}
          token: "${{ inputs.token }}"
      - name: Gather registry metadata
        uses: docker/metadata-action@v5
        id: meta
        with:
          images: ${{ inputs.image }}
          tags: |
            type=sha,prefix=,suffix=,format=long
      - name: Registry login
        uses: docker/login-action@v3
        with:
          registry: git.etc.nu
          username: "${{ inputs.user }}"
          password: "${{ inputs.token }}"
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Build and push image
        uses: docker/build-push-action@v6
        id: build
        with:
          file: ${{ inputs.dockerfile }}
          context: ${{ inputs.context }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=registry,ref=${{ inputs.image }}/cache
          cache-to: type=registry,ref=${{ inputs.image }}/cache,mode=max
      - name: Set outputs
        id: facts
        run: |
          echo "sha=${{ gitea.event.release.target_commitish }}" >> $GITHUB_OUTPUT
    outputs:
      tag: ${{ fromJSON(steps.meta.outputs.json).tags[0] }}
      image: ${{ inputs.image }}
      sha: ${{ gitea.sha }}