#!/usr/bin/env ruby
require 'json'
require 'tempfile'
require 'open3'
require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'octokit'
end

github_token = ENV["GITHUB_TOKEN"]
if !github_token || github_token.empty?
  puts "Please set the GITHUB_TOKEN environment variable"
  exit -1
end

arg = /(?<repo_nwo>[\w\-]+\/[\w\-]+)\/pull\/(?<pr_number>\d+)/.match(ARGV[0])

if arg.nil?
  puts "Usage: script/scan_pr <pr_url>"
  exit -1
end

repo_nwo = arg[:repo_nwo]
pr_number = arg[:pr_number]

octo = Octokit::Client.new(access_token: github_token)
pr = octo.pull_request(repo_nwo, pr_number)

event_file = Tempfile.new
event_file.write("{ \"pull_request\": #{pr.to_h.to_json}}")
event_file.close

action_inputs = {
  "repo-token" => github_token
}

dev_cmd_env = {
  "GITHUB_REPOSITORY" => repo_nwo,
  "GITHUB_EVENT_NAME" => "pull_request",
  "GITHUB_EVENT_PATH" => event_file.path,
  "GITHUB_STEP_SUMMARY" => "/dev/null"
}

# bash does not like variable names with dashes like the ones Actions
# uses (e.g. INPUT_REPO-TOKEN). Passing them through `env` instead of
# manually setting them does the job.
action_inputs_env_str = action_inputs.map { |name, value| "\"INPUT_#{name.upcase}=#{value}\"" }.join(" ")
dev_cmd = "./node_modules/.bin/nodemon --exec \"env #{action_inputs_env_str} node -r esbuild-register\" src/main.ts"

Open3.popen2e(dev_cmd_env, dev_cmd) do |stdin, out|
  while line = out.gets
    puts line.gsub(github_token, "<REDACTED>")
  end
end