require "highline/import"
require 'core/shared/rcli_installation'
class InstallCommand  < Command
  
  include Rcli::Installation
  
  description "Installs rcli to your system, or installs a specific rcli app"

  def main()
    
    if $verbose
      print "params : "
      pp @params
    end
      
    if _installed_rcli_base? && @params[:args].length > 0
      if @params[:args].length != 2
        puts "ERROR: Incorrect syntax. Please use 'rcli install [script] [alias]'"
        exit
      end
      unless File.exists? @params[:args][0]
        puts "ERROR: The filename provided does not exist. Please type 'rcli install help' for proper usage."
      end
      unless File.executable_real? @params[:args][0]
        puts "ERROR: The script you're trying to install is not executable. Please type 'rcli install help' for proper usage."
      end
      if File.exists? Rcli::RCLI_DOTFOLDER + DS + 'bin' + DS + @params[:args][1]
        puts "ERROR: The install name for that script is already taken"
        exit
      end
            
      unless FileUtils.ln_s(File.expand_path(@params[:args][0]),Rcli::RCLI_DOTFOLDER + DS + 'bin' + DS + @params[:args][1])
        puts "ERROR: There was a problem installing " + @params[:args][1]
        exit
      end
      
      unless File.open(File.expand_path(Rcli::RCLI_DOTFOLDER + DS + 'app_info' + DS + @params[:args][1] + '.yml'),'w') { |f|
          f << 'application_root: ' + File.dirname(File.expand_path(@params[:args][0])) + "\n"
          f << 'executable: ' + File.basename(File.expand_path(@params[:args][0]))
        }
        puts "ERROR: There was a problem installing " + @params[:args][1]
        FileUtils.rm(File.expand_path(@params[:args][0]),Rcli::RCLI_DOTFOLDER + DS + 'bin' + DS + @params[:args][1])
        exit
      end
        
    elsif @params[:args].length > 0 && !_installed_rcli_base?
      puts "You haven't installed the rcli base yet. Please run 'rcli install' first."
    elsif _installed_rcli_base?
      puts "rcli base already installed"
    else
      if _install_rcli_base
        puts "rcli successfully installed"
      else
        puts "ERROR"
      end
    end
  end
  
private

  def _install_rcli_base
    if _installed_rcli_base?
      return false
    end

    dotpath = File.expand_path('~/' + Rcli::RCLI_CONFIG['global']['hidden_dir_name'] )
    puts "Installing to : #{dotpath}"
    # exit
    FileUtils.mkdir_p(dotpath + DS + 'bin')
    FileUtils.mkdir_p(dotpath + DS + 'app_info')

    if agree("Add rcli to your path to allow script installations? [yn]", true)
      File.open(File.expand_path('~/.bash_profile'),'a') { |f|
        f << "\n\n# rcli Installer addition on #{Time.now.inspect}. Adding appropriate PATH variables for use with rcli."
        f << "\nexport PATH=#{dotpath}/bin:$PATH"
        f << "\n# Finished adapting your PATH environment variable for use with rcli."
      }
    end
  
    File.open(dotpath + DS + 'config.yml', 'w') { |f|
      f << File.read(Rcli::GEM_CONFIG + DS + 'application.yml')
    }
  

  end
end