#*******************************************************************************
# buidDocker.yml
#
# Workflow to build and push a multiplatform (amd64, arm64 & arm7) Linux Docker
# image for Medley. This workflow uses the latest Maiko docker image and the 
# latest Medley release on github.
#
# This workflow contains a sentry that causes it to skip the build (as identified
# by its commit SHA) if its already been done.  Setting the "force" input to true
# will bypass this sentry,
#
# Updated 2022-01-18 by Frank Halasz from on earlier buildDocker.yml
#
# Copyright 2022 by Interlisp.org
#
# ******************************************************************************

name: 'Build/Push Docker Image'

# Run this workflow on ...
on:
  workflow_dispatch:
    inputs:
      draft:
        description: "Mark this as a draft release"
        type: choice
        options:
        - 'false'
        - 'true'
      force:
        description: "Force build even if build already successfully completed for this commit"
        type: choice
        options:
        - 'false'
        - 'true'

  workflow_call:
    outputs:
      successful:
        description: "'True' if medley docker build completed successully"
        value: ${{ jobs.complete.outputs.build_successful }}
    inputs:
      draft:
        description: "Mark this as a draft release"
        required: false
        type: string
        default: 'false'
      force:
        description: "Force build even if build already successfully completed for this commit"
        required: false
        type: string
        default: 'false'
    secrets:
      DOCKER_USERNAME:
        required: true
      DOCKER_PASSWORD:
        required: true

defaults:
  run:
    shell: bash


jobs:


######################################################################################

  # Use sentry-action to determine if this release has already been built
  # based on the latest commit to the repo

  sentry:
    runs-on: ubuntu-24.04
    outputs:
      release_not_built: ${{ steps.check.outputs.release_not_built }}

    steps:
      # Checkout the actions for this repo owner
      - name: Checkout Actions
        uses: actions/checkout@v4
        with:
          repository: ${{ github.repository_owner }}/.github
          path: ./Actions_${{ github.sha }}
      - run: mv ./Actions_${{ github.sha }}/actions ../actions && rm -rf ./Actions_${{ github.sha }}

      # Check if build already run for this commit
      - name: Build already completed?
        id: check
        continue-on-error: true
        uses: ./../actions/check-sentry-action
        with:
          tag: "docker"

######################################################################################

  #
  #  Build and push the medley docker image
  #

  build_and-push:

    runs-on: ubuntu-24.04

    needs: [sentry]
    if: |
      needs.sentry.outputs.release_not_built == 'true'
      || inputs.force == 'true'

    steps:
      # Checkout latest commit
      - name: Checkout Medley
        uses: actions/checkout@v4

      # Find latest release (draft or normal)
      # and download its assets
      - name: Download linux debs from latest (draft) release
        run: |
          tag=""
          if [ "${{ inputs.draft }}" = "true" ];
          then
            tag=$(gh release list | grep Draft | head -n 1 | awk '{ print $3 }')
          fi
          if [ -z "${tag}" ];
          then
            tag=$(gh release list | grep Latest | head -n 1 | awk '{ print $3 }')
          fi
          mkdir -p release_debs
          gh release download ${tag} -D release_debs -p '*-linux-*.deb'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      # Get Maiko and Medley release information from name of deb files
      # just downloaded from the Medley latest release
      - name: Get info about Miako and Medley releases
        id: release_info
        run: |
          regex="^medley-full-[^-]*-[^-]*-\([^_]*\)_\(.*\).deb\$"
          ls -1 release_debs | head -n 1 > debname.tmp
          medley_release="medley-$(sed -e "s/${regex}/\1/" debname.tmp)"
          maiko_release="maiko-$(sed -e "s/${regex}/\2/" debname.tmp)"
          rm -f debname.tmp
          echo "MEDLEY_RELEASE=${medley_release}"     >> ${GITHUB_ENV}
          echo "MAIKO_RELEASE=${maiko_release}"       >> ${GITHUB_ENV}

          # regex="^[^0-9]*\([^_]*\)_\([^-]*-[^-]*\)-\([^-]*\)-\([^.]*\).*\$"

      # Set repo env variables
      - name: Set repo/docker env variables
        id: repo_env
        run: |
          repo_name="${GITHUB_REPOSITORY#*/}"
          docker_namespace="$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')"
          docker_image="${docker_namespace}/${repo_name}"
          if [ "${{ inputs.draft }}" = "false" ];
          then
              docker_tags="${docker_image}:latest,${docker_image}:${MEDLEY_RELEASE#*-}_${MAIKO_RELEASE#*-}"
              platforms="linux/amd64"
              #,linux/arm64
          else
              docker_tags="${docker_image}:draft"
              platforms="linux/amd64"
          fi
          echo "REPO_NAME=${repo_name}"                       >> ${GITHUB_ENV}
          echo "DOCKER_NAMESPACE=${docker_namespace}"         >> ${GITHUB_ENV}
          echo "DOCKER_IMAGE=${docker_image}"                 >> ${GITHUB_ENV}
          echo "DOCKER_TAGS=${docker_tags}"                   >> ${GITHUB_ENV}
          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')"  >> ${GITHUB_ENV}
          echo "PLATFORMS=${platforms}"                       >> ${GITHUB_ENV}
          #linux/amd64,linux/arm64,linux/arm/v7

      # Setup the Docker Machine Emulation environment.  
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: linux/amd64
       # ,linux/arm64,linux/arm/v7

      # Setup the Docker Buildx funtion
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      # Login into DockerHub - required to store the created image
      - name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      # Do the Docker Build using the Dockerfile in the repository
      # checked out and the release tars just downloaded.
      # Push the result to Docker Hub
      - name: Build Docker Image for Push to Docker Hub
        uses: docker/build-push-action@v5
        with:
          builder: ${{ steps.buildx.outputs.name }}
          build-args: |
            BUILD_DATE=${{ env.BUILD_DATE }}
            MEDLEY_RELEASE=${{ env.MEDLEY_RELEASE }}
            MAIKO_RELEASE=${{ env.MAIKO_RELEASE }}
            REPO_OWNER=${{ github.repository_owner }}
          context: ./release_debs
          file: ./.github/workflows/Dockerfile_medley
          platforms: ${{ env.PLATFORMS }}
          # Push the result to DockerHub
          push: true
          tags: ${{ env.DOCKER_TAGS }}

######################################################################################

  # Use set-sentry-action to determine set the sentry that says this release has
  # been successfully built

  complete:

    runs-on: ubuntu-24.04

    outputs:
      build_successful: ${{ steps.output.outputs.build_successful }}

    needs: [sentry, build_and-push]

    steps:
      # Checkout the actions for this repo owner
      - name: Checkout Actions
        uses: actions/checkout@v4
        with:
          repository: ${{ github.repository_owner }}/.github
          path: ./Actions_${{ github.sha }}
      - run: mv ./Actions_${{ github.sha }}/actions ../actions && rm -rf ./Actions_${{ github.sha }}

      # Set sentry
      - name: Set flag that build for this commit has been completed
        id: set
        uses: ./../actions/set-sentry-action
        with:
          tag: "docker"

      - name: Output
        id: output
        run: |
          echo "build_successful='true'" >> ${GITHUB_OUTPUT}

######################################################################################