require 'fileutils'
require 'json'
require_relative '../lib/color'
require_relative '../lib/const'
require_relative '../lib/package'
require_relative '../lib/package_utils'

class Command
  def self.list(available, compatible, incompatible, essential, installed, verbose)
    device_json = JSON.load_file(File.join(CREW_CONFIG_PATH, 'device.json'))
    installed_packages = {}
    device_json['installed_packages'].each do |package|
      installed_packages[package['name']] = package['version']
    end

    if available
      Dir["#{CREW_PACKAGES_PATH}/*.rb"].each do |filename|
        pkg_name = File.basename(filename, '.rb')
        next if installed_packages.key?(pkg_name)
        pkg = Package.load_package(filename)
        puts pkg_name if PackageUtils.compatible?(pkg)
      end
    elsif compatible
      Dir["#{CREW_PACKAGES_PATH}/*.rb"].each do |filename|
        pkg_name = File.basename(filename, '.rb')
        pkg = Package.load_package(filename)
        puts pkg_name.lightgreen if PackageUtils.compatible?(pkg) && installed_packages.key?(pkg_name)
        puts pkg_name if PackageUtils.compatible?(pkg)
      end
    elsif incompatible
      Dir["#{CREW_PACKAGES_PATH}/*.rb"].each do |filename|
        pkg_name = File.basename(filename, '.rb')
        pkg = Package.load_package(filename)
        puts pkg_name.lightred unless PackageUtils.compatible?(pkg)
      end
    elsif essential
      puts CREW_ESSENTIAL_PACKAGES.join("\n")
    elsif installed
      if verbose
        installed_packages['======='] = '======='
        installed_packages['Package'] = 'Version'
        first_col_width = installed_packages.keys.max { |a, b| a.size <=> b.size }.size
        installed_packages.sort.to_h.each do |package, version|
          puts "#{package.ljust(first_col_width)}  #{version}".lightgreen
        end
      else
        installed_packages.each_key do |package|
          puts package.lightgreen
        end
      end
    end
  end
end