R/connect.R

In jr-packages/jrPresentation: Jumping Rivers Slide Format

connect_server = function() "connect.jumpingrivers.cloud"

is_connect_set_up = function() {
  server = rsconnect::accounts()$server
  if (length(server) > 0 && (server %in% connect_server()))
    return(TRUE)
  else
    return(FALSE)
}

#' Set up connect
#'
#' Set up connection to the
#' @export
set_up_connect = function() {
  rsconnect::addConnectServer(paste0("https://", connect_server()),
                              connect_server())
  rsconnect::connectUser(server = connect_server())
}

deploy = function() {
  user = get_connect_user()
  rsconnect::deploySite(siteDir = getwd(),
                        siteName = get_connect_name(),
                        server = connect_server(),
                        account = user,
                        render = "local")
}

#' @rdname create_site_yml
#' @param clean Should we clean up?
#' @export
#' @importFrom rsconnect deploySite
upload_slides = function(clean = TRUE) {
  if (clean) on.exit(clean_site(), add = TRUE)
  if (file.exists("slides")) {
    setwd("slides/"); on.exit(setwd("../"))
  }
  if (!is_connect_set_up()) {
    message("Need to link to connect.")
    set_up_connect()
  }

  create_connect_template()
  create_site_yml()
  result = try(deploy())
  if (class(result) == "try-error") {
    message("Upload failed")
    return(FALSE)
  }
  message("Upload successful - user: ", get_connect_user())
  return(TRUE)
}

#' @importFrom rsconnect accounts connectUser
get_connect_user = function() {
  acc = rsconnect::accounts()
  acc = acc[acc$server == connect_server(), ]
  names = acc$name

  if (length(names) == 1L) return(names)

  names = names[names %in% c("colin", "jamie", "seb", "theo", "roman")]
  return(names)
}

#' Function to return slide name for connect
#'
#' Should only be used in a Makefile in slides directory
#'
#' @export
get_connect_name = function() {
  git_config = file("../.git/config")
  on.exit(close(git_config))
  l = readLines(git_config)
  git_url = l[grep(pattern = "\turl", l)]
  pkg = stringr::str_match(git_url,
                           "(jumpingrivers-notes|course_notes)/(.*)/(.*)_notes")
  pkg = pkg[, length(pkg)]
  pkg
}

#' Copy the index.Rmd template for the connect back up to local directory
#'
#' Should only be used in a Makefile in slides directory
#'
#' @export
create_connect_template = function() {
  file = system.file("home_template.Rmd", package = "jrPresentation")
  # Index does not exist
  if (!file.exists("index.Rmd")) {
    file.copy(file, "index.Rmd")
    message("Updated index.Rmd")
    return(TRUE)
  }

  # Check if index is home_template
  index = readLines("index.Rmd")
  home_temp = readLines(file)

  if (index[[2]] == home_temp[[2]]) {
    file.copy(file, "index.Rmd")
    message("Updated index.Rmd")
    return(TRUE)
  }
  message("index.Rmd not updated. Delete if you want to update")
  return(FALSE)
}

#' Create site yaml for connect
#'
#' Should only be used in a Makefile in slides directory
#'
#' @importFrom stringr str_to_title
#' @export
create_site_yml = function() {
  chapters = list.files(pattern = "chapter(.*)\\.Rmd$")
  chapters = chapters[grepl("chapter", chapters)]
  html = gsub("Rmd", "html", chapters)
  labels = gsub(".Rmd", "", chapters)
  labels = gsub("([a-z])([0-9])", "\\1 \\2", labels)
  labels = stringr::str_to_title(labels)

  # Try to get title
  if (file.exists("chapter1.Rmd")) {
    chapter1 = readLines("chapter1.Rmd")[[2]]
    title = stringr::str_match(chapter1, 'title: "(.*)"')[1, 2]
  } else if (file.exists("index.Rmd")) {
    index = readLines("index.Rmd")[[2]]
    title = stringr::str_match(index, 'title: "(.*)"')[1, 2]
  } else {
    title = "R Course"
  }
  content = paste0("    - text: \"", labels, "\"\n      href: ", html,
                   collapse = "\n")
  site = paste0(
    'name: "Slides"
navbar:
  title: "', title, '"
  left:
', content
  )
  cat(site, file = "_site.yml")
}

#' @rdname create_site_yml
#' @importFrom digest digest
#' @importFrom rmarkdown clean_site
#' @export
clean_site = function() {
  try(rmarkdown::clean_site(getwd()), silent = TRUE)
  if (file.exists("_site.yml")) file.remove("_site.yml")
  if (file.exists("index.Rmd")) {

    index = digest::digest(readLines("index.Rmd"))
    file = system.file("home_template.Rmd", package = "jrPresentation")
    home_temp = digest::digest(readLines(file))
    # WhyR has only index.Rmd, so don't delete index.Rmd without thinking
    # Use a hash as a quick comparison
    if (index == home_temp) {
      file.remove("index.Rmd")
    }
  }
}