module Riffer::Rig::Support::JsonFile

# File lib/riffer/rig/support/json_file.rb, line 12
def read(path, symbolize_names: false)
  content = File.file?(path) ? File.read(path) : ''
  empty = {} #: Hash[untyped, untyped]
  return empty if content.b.strip.empty?

  document = JSON.parse(content, symbolize_names: symbolize_names)
  document.is_a?(Hash) ? document : "#{path} does not hold a JSON object"
rescue JSON::ParserError => e
  # The parser's message quotes the text it stopped at, which in auth.json
  # can be a secret, so only the position is taken from it.
  ["#{path} is not valid JSON", e.message[/line \d+ column \d+\z/]].compact.join(' at ')
end

# File lib/riffer/rig/support/json_file.rb, line 30
def update(path, symbolize_names: false, mode: nil)
  document = read(path, symbolize_names: symbolize_names)
  return document if document.is_a?(String)

  updated = yield document
  write(path, updated, mode: mode) unless updated == document
  nil
end