name: Build and Publish Release

on:
  push:
    tags:
      - 'v[0-9]+.[0-9]+.[0-9]+'
  workflow_dispatch:
    inputs:
      release_version:
        description: "Version of the release"
        required: true

concurrency:
  group: build-opencost
  cancel-in-progress: true

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-publish-opencost:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Get Version From Tag
        id: tag
        if: ${{ github.event_name }} == 'push'
        run: |
          echo "TRIGGERED_TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV

      - name: Determine Version Number
        id: version_number
        run: |
          if [ -z "${TRIGGERED_TAG}" ];
          then
            version=${{ inputs.release_version }}
          else
            version=$TRIGGERED_TAG
          fi
          if [[ ${version:0:1} == "v" ]];
          then
            echo "RELEASE_VERSION=${version:1}" >> $GITHUB_OUTPUT
          else
            echo "RELEASE_VERSION=$version" >> $GITHUB_OUTPUT
          fi

      - name: Show Input Values
        run: |
          echo "release version: ${{ inputs.release_version }}"

      - name: Make Branch Name
        id: branch
        run: |
          VERSION_NUMBER=${{ steps.version_number.outputs.RELEASE_VERSION }}
          echo "BRANCH_NAME=v${VERSION_NUMBER%.*}" >> $GITHUB_OUTPUT

      - name: Checkout Repo
        uses: actions/checkout@v4
        with:
          ref: '${{ steps.branch.outputs.BRANCH_NAME }}'
          path: ./opencost

      - name: Set SHA
        id: sha
        run: |
          pushd ./opencost
          echo "OC_SHORTHASH=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
          popd

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set OpenCost Image Tags
        id: tags
        run: |
          echo "IMAGE_TAG=ghcr.io/${{ github.repository_owner }}/opencost:${{ steps.sha.outputs.OC_SHORTHASH }}" >> $GITHUB_OUTPUT
          echo "IMAGE_TAG_LATEST=ghcr.io/${{ github.repository_owner }}/opencost:latest" >> $GITHUB_OUTPUT
          echo "IMAGE_TAG_VERSION=ghcr.io/${{ github.repository_owner }}/opencost:${{ steps.version_number.outputs.RELEASE_VERSION }}" >> $GITHUB_OUTPUT

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          buildkitd-flags: --debug

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: 'stable'

      - name: Set up just
        uses: extractions/setup-just@v2

      - name: Install crane
        uses: imjasonh/setup-crane@v0.4

      ## Install manifest-tool, which is required to combine multi-arch images
      ## https://github.com/estesp/manifest-tool
      - name: Install manifest-tool
        run: |
          mkdir -p manifest-tool
          pushd manifest-tool
          wget -q https://github.com/estesp/manifest-tool/releases/download/v2.0.8/binaries-manifest-tool-2.0.8.tar.gz
          tar -xzf binaries-manifest-tool-2.0.8.tar.gz
          cp manifest-tool-linux-amd64 manifest-tool
          echo "$(pwd)" >> $GITHUB_PATH

      - name: Build and push (multiarch) OpenCost
        working-directory: ./opencost
        run: |
          just build '${{ steps.tags.outputs.IMAGE_TAG }}' '${{ steps.version_number.outputs.RELEASE_VERSION }}'
          crane copy '${{ steps.tags.outputs.IMAGE_TAG }}' '${{ steps.tags.outputs.IMAGE_TAG_LATEST }}'
          crane copy '${{ steps.tags.outputs.IMAGE_TAG }}' '${{ steps.tags.outputs.IMAGE_TAG_VERSION }}'