#!/usr/bin/env Rscript

# This script downloads all the files and sets up the folders you need to
# OTTR-fy a repository that has markdown or R Markdown files

system("git checkout -b 'robot/ottr-fy'")

if (!('optparse' %in% installed.packages())) {
  install.packages("optparse")
}
library(optparse)
library(magrittr)

option_list <- list(
  optparse::make_option(
    c("--bookdown"),
    action = "store_true",
    help = "Is this a bookdown repository already? If used, means bookdown repo.",
  )
)

# Read the arguments passed
opt_parser <- optparse::OptionParser(option_list = option_list)
opt <- optparse::parse_args(opt_parser)

# Find .git root directory
root_dir <- rprojroot::find_root(rprojroot::has_dir(".git"))

base_url <- "https://raw.githubusercontent.com/jhudsl/OTTR_Template/main/"

needed_files <- c(
  ".github/workflows/pull_request.yml",
  ".github/workflows/render-all.yml",
  ".github/workflows/delete-preview.yml",
  "scripts/git_repo_check.R",
  "scripts/make_screenshots.R",
  "_bookdown.yml",
  "_output.yml",
  "book.bib",
  "config_automation.yml",
  "assets/big-image.html",
  "assets/footer.html"
  )

# If this is bookdown, we don't want to copy over the bookdown.yml or output.yml files
if (opt$bookdown) {
  needed_files <- setdiff(needed_files,
  c("_bookdown.yml", "_output.yml", "assets/big-image.html", "assets/footer.html", "book.bib"))
}

# Set up a file list with the destination locations as the names
url_to_files <- paste0(base_url, needed_files)
names(url_to_files) <-  file.path(root_dir, needed_files)

# Download the file in the respective place
for (index in 1:length(url_to_files)) {
  dest_folder <- dirname(names(url_to_files)[index])
  if (!dir.exists(dest_folder)){
    dir.create(dest_folder, recursive = TRUE)
  }
  download.file(url = url_to_files[index], destfile = names(url_to_files)[index])
}

system("git add .")
system("git config commit.gpgsign false")
system("git commit -m 'Add ottr-fying files'")
system("git push --set-upstream origin robot/ottr-fy")