name: Publish Docker

on:
  push:
    branches: [master, beta, nightly]
    tags: [v*]

jobs:
  build-docker:
    name: Build Docker Image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v2

      - name: Prepare
        id: prepare
        run: |
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/master ]]; then
            echo ::set-output name=tag::latest
          else
            echo ::set-output name=tag::${GITHUB_REF#refs/heads/}
          fi
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            echo ::set-output name=branch::master
          else
            echo ::set-output name=branch::${GITHUB_REF#refs/heads/}
          fi
          echo ::set-output name=commit::${GITHUB_SHA}
          echo ::set-output name=build_date::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
          echo ::set-output name=docker_platforms::linux/amd64,linux/arm64/v8,linux/arm/v7,linux/arm/v6
          echo ::set-output name=docker_image::${{ secrets.DOCKER_REPO }}/tautulli

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
        with:
          platforms: all

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: latest

      - name: Cache Docker Layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login to DockerHub
        uses: docker/login-action@v1
        if: success()
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        if: success()
        with:
          registry: ghcr.io
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: Docker Build and Push
        uses: docker/build-push-action@v2
        if: success()
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: ${{ steps.prepare.outputs.docker_platforms }}
          build-args: |
            TAG=${{ steps.prepare.outputs.tag }}
            BRANCH=${{ steps.prepare.outputs.branch }}
            COMMIT=${{ steps.prepare.outputs.commit }}
            BUILD_DATE=${{ steps.prepare.outputs.build_date }}
          tags: |
            ${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.tag }}
            ghcr.io/${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.tag }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

      - name: Post Status to Discord
        uses: sarisia/actions-status-discord@v1
        if: always()
        with:
          webhook: ${{ secrets.DISCORD_WEBHOOK }}
          status: ${{ job.status }}
          title: ${{ github.workflow }}
          nofail: true