name: Build

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build-and-test-python:

    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [3.7, 3.8]
      fail-fast: false

    steps:
    - name: "Get OS version (Linux)"
      if: startsWith(runner.os, 'Linux')
      run: |
        echo "OS_VERSION=`lsb_release -sr`" >> $GITHUB_ENV
        echo "PIP_DEFAULT_CACHE=$HOME/.cache/pip" >> $GITHUB_ENV
        echo "DEFAULT_HOME=$HOME" >> $GITHUB_ENV
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: "Restore pip cache"
      id: cache-pip
      uses: actions/cache@v2
      with:
        path: ${{ env.PIP_DEFAULT_CACHE }}
        key: ${{ runner.os }}-pip-${{ hashFiles('**/python/requirements.txt') }}-v1
        restore-keys: |
          ${{ runner.os }}-pip-
    - name: Install and test
      run: |
        pip install -U -r python/requirements.txt dask[dataframe] distributed
        cd python
        python setup.py develop test

  build-and-test-r:

    runs-on: ${{ matrix.config.os }}
    strategy:
      matrix:
        config:
          - {os: ubuntu-20.04, r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest"}
      fail-fast: false

    env:
      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
      RSPM: ${{ matrix.config.rspm }}

    steps:
    - uses: actions/checkout@v2
    - name: Set up R
      uses: r-lib/actions/setup-r@v2
      with:
        r-version: ${{ matrix.config.r }}
    - name: Install remotes
      run: |
        install.packages('remotes')
      shell: Rscript {0}
    - name: Query dependencies
      run: |
        saveRDS(remotes::dev_package_deps(pkgdir = "R/", dependencies = TRUE), ".github/depends.Rds", version = 2)
        writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
      shell: Rscript {0}
    - name: Restore R package cache
      if: runner.os != 'Windows'
      uses: actions/cache@v2
      with:
        path: ${{ env.R_LIBS_USER }}
        key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
        restore-keys: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-
    - name: Install system dependencies
      if: runner.os == 'Linux'
      run: |
        while read -r cmd
        do
          eval sudo $cmd
        done < <(Rscript -e 'writeLines(remotes::system_requirements(os = "ubuntu", os_release = "20.04", path = "R/"))')
    - name: Install dependencies
      run: |
        remotes::install_deps(pkgdir = "R/", dependencies = NA)
        remotes::install_cran(c("rcmdcheck", "knitr", "testthat", "readr", "rmarkdown"))
        install.packages(c("cmdstanr", "posterior"), repos = c("https://mc-stan.org/r-packages/", getOption("repos")))
      shell: Rscript {0}
    - name: Check
      env:
        _R_CHECK_CRAN_INCOMING_REMOTE_: false
      run: |
        options(crayon.enabled = TRUE)
        rcmdcheck::rcmdcheck(path = "R/", args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
      shell: Rscript {0}
    - name: Upload check results
      if: failure()
      uses: actions/upload-artifact@main
      with:
        name: ${{ runner.os }}-r${{ matrix.config.r }}-results
        path: check