on:
  push:
    branches:
      - master
      - develop
  pull_request:
    branches:
      - master
      - develop

name: lint
# updated (cache@v1 to cache@v2) from https://github.com/r-lib/actions/blob/master/examples/pkgdown.yaml
# updated (to support {renv}) from https://rstudio.github.io/renv/articles/ci.html#github-actions

jobs:
  lint:
    runs-on: macOS-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
      RENV_PATHS_ROOT: ~/.local/share/renv
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@master

      - name: Query dependencies
        run: |
          install.packages('remotes')
          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
        shell: Rscript {0}

      - name: Cache R packages
        uses: actions/cache@v2
        with:
          path: ${{ env.RENV_PATHS_ROOT }}
          key: ${{ runner.os }}-renv-${{ hashFiles('**/renv.lock') }}
          restore-keys: |
            ${{ runner.os }}-renv-

      - name: Install dependencies
        run: |
          if (!requireNamespace("renv", quietly = TRUE)) install.packages("renv")
          renv::restore()
          renv::install("lintr")
        shell: Rscript {0}

      - name: Lint
        run: lintr::lint_package()
        shell: Rscript {0}