Publish documentation to GitHub Pages (#1774)

Author: ofek

.github/workflows/docs.yml

@@ -0,0 +1,71 @@
+name: docs
+
+on:
+  create:
+    tags:
+    # https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
+    - b[0-9][0-9][0-9]
+    - publish-docs*
+  push:
+    branches:
+    - main
+
+jobs:
+  decompile:
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.9'
+
+    - name: Install latest release
+      run: pip install --user --upgrade pywin32
+
+    - name: Set Python user site directory
+      run: python -c "import os,site;open(os.environ['GITHUB_ENV'], 'a').write(f'USER_DIR={site.USER_SITE}\n')"
+
+    - name: Decompile shipped help file
+      run: hh -decompile site ${env:USER_DIR}\PyWin32.chm
+
+    - name: Rename root HTML file
+      run: mv site\PyWin32.HTML site\index.html
+
+    # Compress first to avoid slowly uploading thousands of individual files
+    - name: Create archive
+      run: python -m zipfile -c site.zip site
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: documentation
+        path: site.zip
+
+  publish:
+    runs-on: ubuntu-latest
+    needs:
+    - decompile
+
+    # Only publish tags
+    if: github.event_name == 'create' && github.event.ref_type == 'tag'
+
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: documentation
+
+    - name: Unpack archive
+      run: python -m zipfile -e site.zip .
+
+    - uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: site
+        commit_message: ${{ github.event.head_commit.message }}
+        # Write .nojekyll at the root, see:
+        # https://help.github.com/en/github/working-with-github-pages/about-github-pages#static-site-generators
+        enable_jekyll: false
+        # Only deploy if there were changes
+        allow_empty_commit: false