name: 'Setup repo'
description: 'Setup repo: checkout/login/extract metadata, Set up Docker Buildx'
inputs:
  docker-username:
    description: 'Docker username'
    required: true
  docker-password:
    description: 'Docker password'
    required: true
  docker-remote-multi-platform:
    description: 'Docker remote multi-platform builder'
    required: true
    default: 'false'
  docker-arm-host:
    description: 'Docker remote arm builder'
    required: false
  docker-arm-host-key:
    description: 'Docker remote arm builder ssh private key'
    required: false
  docker-image:
    description: 'Docker image'
    required: true
    default: blockscout/blockscout
outputs:
  docker-builder:
    description: 'Docker builder'
    value: ${{ steps.builder_local.outputs.name || steps.builder_multi.outputs.name }}
  docker-tags:
    description: 'Docker metadata tags'
    value: ${{ steps.meta.outputs.tags }}
  docker-labels:
    description: 'Docker metadata labels'
    value: ${{ steps.meta.outputs.labels }}
  docker-platforms:
    description: 'Docker build platforms'
    value: ${{ steps.builder_local.outputs.platforms || steps.builder_multi.outputs.platforms }}
runs:
  using: "composite"
  steps:
    - name: Set up SSH key
      shell: bash
      run: |
        mkdir -p ~/.ssh
        echo "${{ inputs.docker-arm-host-key }}" > ~/.ssh/id_rsa
        chmod 600 ~/.ssh/id_rsa  
    - name: Find builder
      if: ${{ inputs.docker-remote-multi-platform }}
      shell: bash
      run: echo "BUILDER_IP=$(./.github/scripts/select-builder.sh ${{ inputs.docker-arm-host }} root ~/.ssh/id_rsa)" >> $GITHUB_ENV
    - name: Set up SSH
      if: ${{ inputs.docker-remote-multi-platform }}
      uses: MrSquaare/ssh-setup-action@523473d91581ccbf89565e12b40faba93f2708bd # v1.1.0
      with:
        host: ${{ env.BUILDER_IP }}
        private-key: ${{ inputs.docker-arm-host-key }}

    - name: Set up Docker Buildx
      if: ${{ !inputs.docker-remote-multi-platform }}
      uses: docker/setup-buildx-action@v3
      id: builder_local
      with:
        platforms: linux/amd64

    - name: Set up Multi-platform Docker Buildx
      if: ${{ inputs.docker-remote-multi-platform }}
      uses: docker/setup-buildx-action@v3
      id: builder_multi
      with:
        platforms: linux/amd64
        append: |
          - endpoint: ssh://root@${{ env.BUILDER_IP }}
            platforms: linux/arm64/v8

    - name: Log in to Docker Hub
      uses: docker/login-action@v3
      with:
        username: ${{ inputs.docker-username }}
        password: ${{ inputs.docker-password }}

    - name: Extract metadata (tags, labels) for Docker
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ inputs.docker-image }}

    - name: Add SHORT_SHA env property with commit short sha
      shell: bash
      run: echo "SHORT_SHA=`echo ${GITHUB_SHA} | cut -c1-8`" >> $GITHUB_ENV