class Terminalwire::Rails::Session

def self.secret_key
  Rails.application.secret_key_base
end

def []=(key, value)
  edit { |config| config[key] = value }
end

def edit
  config = read
  yield config
  write(config)
end

def ensure_file
  return true if @context.file.exist? @config_file_path
  # Create the path if it doesn't exist on the client.
  @context.directory.create @path
  # Write an empty configuration on initialization
  write(EMPTY_SESSION)
end

def initialize(context:, path: nil, secret_key: self.class.secret_key)
  @context = context
  @path = Pathname.new(path || context.storage_path)
  @config_file_path = @path.join(FILENAME)
  @secret_key = secret_key
  ensure_file
end

def read
  jwt_token = @context.file.read(@config_file_path)
  decoded_data = JWT.decode(jwt_token, @secret_key, true, algorithm: 'HS256')
  decoded_data[0]  # JWT payload is the first element in the array
rescue JWT::DecodeError => e
  raise "Invalid or tampered file: #{e.message}"
end

def reset
  @context.file.delete @config_file_path
end

def write(config)
  token = JWT.encode(config, @secret_key, 'HS256')
  @context.file.write(@config_file_path, token)
end