R/tag-version.R

In cynkra/fledge: Smoother Change Tracking and Versioning for R Packages

tag_version_impl <- function(force) {
  check_only_staged(character())

  if (fledge_chatty()) {
    cli_h2("Tagging Version")
  }

  tag_info <- get_tag_info()

  tag <- tag_info$name

  if (tag_already_exist(tag)) {
    # Tagging would do nothing as the tag points to the current commit
    if (gert::git_commit_info(tag)$id == gert::git_log(max = 1)$commit) {
      if (fledge_chatty()) {
        cli_alert_info("Tag {.field {tag}} exists and points to the current commit.")
      }
      return(invisible(tag))
    }

    # Tagging would fail
    if (!force) {
      cli::cli_abort("Tag {.val {tag}} exists, use {.code force = TRUE} to overwrite.")
    }

    if (fledge_chatty()) {
      cli_alert("Deleting existing tag {.field {tag}}.")
    }
    gert::git_tag_delete(tag)
  }

  if (fledge_chatty()) {
    cli_alert(
      "Creating tag {.field {tag}} with tag message derived from {.file NEWS.md}.",
      wrap = TRUE
    )
  }

  gert::git_tag_create(tag, message = paste0(tag_info$header, "\n\n", tag_info$body))

  invisible(tag)
}

get_tag_info <- function() {
  fledgling <- read_fledgling()
  name <- paste0("v", fledgling$version)

  header <- paste0(fledgling$name, " ", fledgling$version)
  body <- sub("^[^\n]+\n\n", "", get_current_news(fledgling))

  list(
    name = name,
    header = header,
    body = body
  )
}

get_current_news <- function(fledgling = NULL) {
  if (is.null(fledgling)) {
    fledgling <- read_fledgling()
  }

  fledgling$news$raw[[1]]
}

tag_already_exist <- function(tag) {
  tag %in% gert::git_tag_list()$name
}