name: Build Windows CI Container

permissions:
  contents: read

on:
  push:
    branches:
      - main
    paths:
      - .github/workflows/build-ci-container-windows.yml
      - '.github/workflows/containers/github-action-ci-windows/**'
  pull_request:
    branches:
      - main
    paths:
      - .github/workflows/build-ci-container-windows.yml
      - '.github/workflows/containers/github-action-ci-windows/**'

jobs:
  build-ci-container-windows:
    if: github.repository_owner == 'llvm'
    runs-on: windows-2019
    outputs:
      container-name: ${{ steps.vars.outputs.container-name }}
      container-name-tag: ${{ steps.vars.outputs.container-name-tag }}
      container-filename: ${{ steps.vars.outputs.container-filename }}
    steps:
      - name: Checkout LLVM
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          sparse-checkout: .github/workflows/containers/github-action-ci-windows
      - name: Write Variables
        id: vars
        run: |
          $tag = [int64](Get-Date -UFormat %s)
          $container_name="ghcr.io/$env:GITHUB_REPOSITORY_OWNER/ci-windows-2019"
          echo "container-name=${container_name}" >> $env:GITHUB_OUTPUT
          echo "container-name-tag=${container_name}:${tag}" >> $env:GITHUB_OUTPUT
          echo "container-filename=ci-windows-${tag}.tar" >> $env:GITHUB_OUTPUT
      - name: Build Container
        working-directory: .github/workflows/containers/github-action-ci-windows
        run: |
          docker build -t ${{ steps.vars.outputs.container-name-tag }} .
      - name: Save container image
        run: |
          docker save  ${{ steps.vars.outputs.container-name-tag }} >  ${{ steps.vars.outputs.container-filename }}
      - name: Upload container image
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: container
          path: ${{ steps.vars.outputs.container-filename }}
          retention-days: 14
  
  push-ci-container:
    if: github.event_name == 'push'
    needs:
      - build-ci-container-windows
    permissions:
      packages: write
    runs-on: windows-2019
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Download container
        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
        with:
          name: container
      - name: Push Container
        run: |
          docker load -i ${{ needs.build-ci-container-windows.outputs.container-filename }}
          docker tag ${{ needs.build-ci-container-windows.outputs.container-name-tag }} ${{ needs.build-ci-container-windows.outputs.container-name }}:latest
          docker login -u ${{ github.actor }} -p $env:GITHUB_TOKEN ghcr.io
          docker push ${{ needs.build-ci-container-windows.outputs.container-name-tag }}
          docker push ${{ needs.build-ci-container-windows.outputs.container-name }}:latest