name: Releases

on:
  push:
    tags:
      - "*"

jobs:
  build:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
      cancel-in-progress: true

    steps:
      - uses: actions/checkout@v4
      - uses: r-lib/actions/setup-r@v2
        with:
          r-version: latest
      - name: create_body
        run: |
          news <- readLines('NEWS.md')
          i <- grep("^# ts", news)[1:2]
          if (is.na(i[2])) i[2L] <- length(news) + 1L
          news <- news[(i[1L] + 1L):(i[2L] - 1L)]
          news <- news[trimws(news) != ""]
          writeLines(news, "body.md")
        shell: Rscript {0}
      - uses: ncipollo/release-action@v1
        with:
          bodyFile: "body.md"