module Checkpoint

# File lib/checkpoint.rb, line 29
def self.check(**opts)
  return nil if @@disabled

  # If we have the cache file, then just return the contents.
  if opts[:cache_file] && File.file?(opts[:cache_file])
    # If the cache file is too old, then delete it
    mtime = File.mtime(opts[:cache_file]).to_i
    limit = Time.now.to_i - (60 * 60 * 24 * 2)
    if mtime > limit
      return build_check(File.read(opts[:cache_file]))
    end

    # Delete the file
    File.unlink(opts[:cache_file])
  end

  # Build the query parameters
  query = {
    version: opts[:version],
    arch: opts[:arch],
    os: opts[:os],
    signature: opts[:signature],
  }
  query[:arch] ||= Platform.arch
  query[:os] ||= Platform.os

  # If a signature file was specified, read it from there.
  if opts[:signature_file]
    if !File.file?(opts[:signature_file])
      File.open(opts[:signature_file], "w+") do |f|
        f.write(SecureRandom.uuid.to_s + "\n\n")
        f.write("This signature is a randomly generated UUID used to de-duplicate\n")
        f.write("alerts and version information. This signature is random, it is\n")
        f.write("not based on any personally identifiable information. To create\n")
        f.write("a new signature, you can simply delete this file at any time.\n")
      end
    end

    query[:signature] = File.read(opts[:signature_file]).lines.first.chomp
  end

  # Turn the raw query parameters into a proper query string
  query = query.map do |k, v|
    if v
      [CGI.escape(k.to_s), "=", CGI.escape(v.to_s)].join
    end
  end.compact.join("&")

  # Build the URL
  uri = URI::HTTP.build(
    host: "checkpoint-api.hashicorp.com",
    path: "/v1/check/#{opts[:product]}",
    query: query,
  )

  headers = {
    "Accept" => "application/json",
    "User-Agent" => "HashiCorp/ruby-checkpoint #{VERSION}",
  }
  http = Net::HTTP.new(uri.host, 443)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_PEER
  resp = http.get("#{uri.path}?#{uri.query}", headers)
  if !resp.is_a?(Net::HTTPSuccess)
    return nil
  end

  # If we have a cache file, write it
  if opts[:cache_file]
    File.open(opts[:cache_file], "w+") do |f|
      f.write(resp.body)
    end
  end

  build_check(resp.body)
rescue Exception
  # If we want errors, raise it
  raise if opts[:raise_error]

  # We don't want check to fail for any reason, so just return nil
  return nil
end

# File lib/checkpoint.rb, line 113
def self.disable!
  @@disabled = true
end

# File lib/checkpoint.rb, line 119
def self.build_check(response)
  JSON.parse(response).tap do |result|
    result["outdated"] = !!result["outdated"]
  end
end