name: Tag Docs

on:
  release:
    types: [ "published" ]

jobs:
  docs:
    env:
      ORIGIN_SITE: _origin_site
      TAGS_DIR: tags
      BRANCH_DIR: branch
    name: Generate docs
    runs-on: windows-latest
    steps:
      - name: Configure git
        shell: powershell
        run: |
          git config --global core.autocrlf true
          git config --global user.email (($env:GITHUB_ACTOR,"@users.noreply.github.com") -join "")
          git config --global user.name $env:GITHUB_ACTOR
      - name: Checkout branch
        uses: actions/checkout@v2
      - name: Checkout submodules
        run: git submodule update --init --recursive
      - name: Locate MSBuild
        uses: microsoft/setup-msbuild@v1.0.2
      - name: Setup .NET Core
        uses: actions/setup-dotnet@v1
        with:
          # As usual, obtained from: https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/5.0/releases.json
          dotnet-version: "3.1.404" # since we now use this
      - name: Clear Nuget Cache
        run: dotnet nuget locals all --clear
      - name: Nuget Restore
        run: msbuild -t:Restore -m
      - name: Install DocFX
        uses: crazy-max/ghaction-chocolatey@v1
        with:
          args: install docfx -y
      - name: Checkout current pages
        uses: actions/checkout@v2
        with:
          ref: gh-pages
          token: ${{ secrets.pagesCommitToken }}
          path: docs/${{ env.ORIGIN_SITE }}
      - name: Build docs
        shell: powershell
        working-directory: ./docs
        run: |
          Add-Content link_branch.json "{`"_gitContribute`":{`"sourceBranch`":`"$env:GITHUB_SHA`",`"apiSpecFolder`":`"docs/override`"}}"
          powershell .\build.ps1
          if ($lastexitcode -ne 0) {
            throw [System.Exception] "docfx build failed with exit code $lastexitcode."
          }
      - name: Publish tag site to GitHub pages
        shell: powershell
        working-directory: ./docs
        run: |
          $ErrorActionPreference = "Continue"
          $tagName = (git rev-parse --abbrev-ref=loose $env:GITHUB_REF) -join ""
          cd $env:ORIGIN_SITE
          if (-Not (Test-Path $env:TAGS_DIR)) {
            New-Item -ItemType directory -Path $env:TAGS_DIR
          }
          $tagPath = "$env:TAGS_DIR/$tagName"
          if (Test-Path $tagPath) {
            # force remove it
            Get-ChildItem -Path $tagPath -Recurse | Remove-Item -Force -Recurse
            Remove-Item $tagPath -Force
          }
          # move generated into place
          Move-Item ../_site $tagPath
          git add -A 2>&1
          git commit -q -a -m "Saved tag $tagName"
          git push -q origin gh-pages