#!/usr/bin/env ruby
# frozen_string_literal: true

require "pathname"
require "flex_station_data/concerns/callable"

class App
  include FlexStationData::Concerns::Callable[:run]

  attr_reader :command, :args

  def initialize(command = "help", *args)
    @command = command
    @args    = args
  end

  def dir_path
    Pathname(__dir__)
  end

  def linear_regression_path
    dir_path.join("flex-station-linear-regression")
  end

  def run
    case command
    when "linear-regression"
      exec(linear_regression_path.to_path, *args)
    when "help", "--help"
      puts "USAGE: flex-station <command>"
    else
      warn "Unrecognised command: #{command}"
      exit(1)
    end
  end
end

App.run(*ARGV)