add pr-commands workflow

.github/workflows/pr-commands.yaml

@@ -0,0 +1,57 @@
+on:
+  issue_comment:
+    types: [created]
+name: Commands
+jobs:
+  # added so that the workflow doesn't fail.
+  always_runner:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Always run
+        run: echo "This job is used to prevent the workflow status from showing as failed when all other jobs are skipped"
+  document:
+    if: startsWith(github.event.comment.body, '/document')
+    name: document
+    runs-on: macOS-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: r-lib/actions/pr-fetch@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: r-lib/actions/setup-r@master
+      - name: Install dependencies
+        run: Rscript -e 'install.packages(c("remotes", "roxygen2"))' -e 'remotes::install_deps(dependencies = TRUE)'
+      - name: Document
+        run: Rscript -e 'roxygen2::roxygenise()'
+      - name: commit
+        run: |
+          git add man/\* NAMESPACE
+          git commit -m 'Document'
+      - uses: r-lib/actions/pr-push@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+  # style:
+  #   if: startsWith(github.event.comment.body, '/style')
+  #   name: style
+  #   runs-on: macOS-latest
+  #   env:
+  #     GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+  #   steps:
+  #     - uses: actions/checkout@v2
+  #     - uses: r-lib/actions/pr-fetch@master
+  #       with:
+  #         repo-token: ${{ secrets.GITHUB_TOKEN }}
+  #     - uses: r-lib/actions/setup-r@master
+  #     - name: Install dependencies
+  #       run: Rscript -e 'install.packages("styler")'
+  #     - name: Style
+  #       run: Rscript -e 'styler::style_pkg()'
+  #     - name: commit
+  #       run: |
+  #         git add \*.R
+  #         git commit -m 'Style'
+  #     - uses: r-lib/actions/pr-push@master
+  #       with:
+  #         repo-token: ${{ secrets.GITHUB_TOKEN }}