require 'optparse'
require "yaml"
require "readline"


class Rocket_starter_options < Hash
  @@version = Rocketstarter::VERSION::STRING
  @@product_name = "rocket_starter"
  
  @@command_line_params = {}

  def initialize
    super()
    
    # default values
    self[:project] = ""
    self[:rocket_starter_conf_path] = ENV["HOME"] + "/.rocketst_starter"
    self[:rocket_starter_conf_path] = ENV['ROCKET_STARTER_CONF'] unless ENV['ROCKET_STARTER_CONF'].nil?
    self[:init] = false
    self.merge(Rocket_starter_options::static_default_values)
    
  end
  
  
  def parse
    
    
    @@opts = OptionParser.new do |opts|
      opts.banner = "Usage: #{@@product_name} project-name [options]"
      opts.separator "Usage: #{@@product_name} --init [options]"
      opts.separator "Usage: #{@@product_name} --check [options]"
      opts.separator "version #{@@version}"
      
      opts.separator ""
      opts.separator "Useful Options:"
      opts.separator ""
      
      opts.on( '--conf=/path/to/conffile', 'change conf file path(static < conf < command line params)' ) do |p|
        self[:rocket_starter_conf_path] = p
      end
      
      opts.on( '--scmtype=[svn|git]', 'choose SCM type. default is svn' ) do |p|
        @@command_line_params[:scmtype] = p
      end
      
      opts.on( '--scmuri=URI', 'use provided URI for SCM(if need, use with "username@")' ) do |p|
        @@command_line_params[:scmuri] = p
      end
      
      opts.on( '--scmpassword=PASSWORD', 'use supplied password for SCM' ) do |p|
        @@command_line_params[:scmpassword] = p
      end
  
      opts.on( '--database=name', 'paramater for rails. default is ""' ) do |p|
        @@command_line_params[:database] = p
      end
      
      opts.on( '--ignoredatabase', 'set ingore for database.yml') do
        @@command_line_params[:ignoredatabase] = true
      end

      opts.on( '--verbose', 'provide extra output while running') do
        @@command_line_params[:verbose] = true
      end
      
      opts.on( '--sudo', 'use sudo command') do
        @@command_line_params[:sudo] = true
      end

      opts.on( '--log', 'create a log of command activity' ) do
        @@command_line_params[:logging] = true
      end
      
      opts.on( '--logfile=/path/to/logfile', 'Set path to logfile' ) do |p|
        @@command_line_params[:log_file] = p
      end

      opts.on( '--skip-netbeans', 'skip to setup propset for netbeans ide' ) do
        @@command_line_params[:skip_netbeans] = true
      end

      opts.on( '--listpath=/path/to/listfile', 'plugin url list path for setup' ) do |p|
        @@command_line_params[:pluginlist_path] = p
      end

      opts.on( '--skip-plugins', 'skip to setup plugins' ) do
        @@command_line_params[:skip_plugins] = true
      end
            
      opts.on( '--rapt', 'use RaPT gem for plugins' ) do
        @@command_line_params[:rapt] = true
      end

      opts.on( '--externals', 'use svn:externals for plugins' ) do
        @@command_line_params[:external] = true
      end

      opts.on( '--createdb', 'execute rake db:create:all at last' ) do
        @@command_line_params[:createdb] = true
      end

      opts.on( '--dbpassword', 'write password to config/database.yml file' ) do |p|
        @@command_line_params[:dbpassword] = p
      end

      opts.on( '--emulate', 'enable emulation mode' ) do
        @@command_line_params[:emulate] = true
      end

      opts.separator ""
      opts.separator "General Options:"
      opts.separator ""
      
      opts.on( '-h', '--help', 'display this information' ) do
        puts opts
        exit
      end
      
      opts.on( '-v', '--version', 'display version information'  ) do
        puts "Ruby on Rails environment setup tool: #{@@product_name} version #{@@version}"
        exit
      end

      opts.on( '--init', 'setup a template of conf file and plugin list file'  ) do
        self[:init] = true
      end

      self[:check] = false
      opts.on( '--check', 'check current variables'  ) do
        self[:check] = true
      end

      opts.separator ""
      opts.separator "Notice:"
      opts.separator ""
      opts.separator "Paramater priority: static < conf < command line"
      opts.separator "You can use a environment variable ROCKET_STARTER_CONF for a rocket_starter_conf_file"
      opts.separator "conf path priority: env < command line"

    end
    
    validate_project_name
    @@opts.parse!
    marge_values
    if self[:check] or "--check" == self[:project]
      puts "current variables"
      self.each_pair do |key, value| puts "#{key}:#{value}" end
      exit
    end 
    if self[:init] or "--init" == self[:project] 
      put_conf_file
      put_pluginlist_file
      exit
    end
    self
  end
  
  # write a template conf file to rocket_starter_conf_path
  def put_conf_file
    # check put path
    Rocket_starter_options::error_with_show_usage "conf path is empty. set ROCKET_STARTER_CONF environment variable or use --conf paramater." if self[:rocket_starter_conf_path].empty?
    
    unless "y" == Readline.readline("would a template file put to #{self[:rocket_starter_conf_path]}? [y/N] > ").downcase
      puts "Set your conf path to ROCKET_STARTER_CONF environment variable or use --conf paramater."
      exit
    end
        
    begin
      File.open(self[:rocket_starter_conf_path]) do |yamlfile|
        # check overwrite?
        exit unless "y" == Readline.readline("Overwrite? [y/N]").downcase
      end
    rescue
    end
    
    begin
      File.open(self[:rocket_starter_conf_path], "w") do |yamlfile|
        yamlfile.puts "# Rocket_starter conf file"
        yamlfile.puts ""
        yamlfile.puts Rocket_starter_options::static_default_values.to_yaml
      end
      puts "Put template yaml file to #{self[:rocket_starter_conf_path]}"
    rescue
      puts "Warning:Could not open for writing. check parmitions."
    end
  end

  # write a template plugin list file to :pluginlist_path
  def put_pluginlist_file
    # check put path
    Sqld4r_options::error_with_show_usage "plugin list path is empty. set --pluginlist_path paramater." if self[:pluginlist_path].empty?
    
    unless "y" == Readline.readline("Would a template of plugin list file put to #{self[:pluginlist_path]}? [y/N] > ").downcase
      puts "Set your command list path to --pluginlist_path paramater."
      exit
    end
        
    begin
      File.open(self[:pluginlist_path]) do |textfile|
        # check overwrite?
        exit unless "y" == Readline.readline("Overwrite? [y/N]").downcase
      end
    rescue
    end
    
    begin
      File.open(self[:pluginlist_path], "w") do |textfile|
        textfile.puts "# command list file for executing it before finish"
        textfile.puts ""
        textfile.puts "# <- this line is comment."
        textfile.puts "# next line is plugin URI:"
        textfile.puts "http://svn.cardboardrocket.com/paginating_find"
        textfile.puts "http://svn.techno-weenie.net/projects/plugins/attachment_fu/"
        textfile.puts "http://svn.s21g.com/public/rails/plugins/annotate_models_with_index/"
      end
      puts "Put template of plugin list file to #{self[:pluginlist_path]}"
    rescue
      puts "Warning:Could not open for writing. check parmitions."
    end
  end
  
  def self.error_with_show_usage(message)
    puts "Error:" + message
    Rocket_starter_options::show_usage
    exit(1)
  end

  def self.show_usage
    puts @@opts
  end
  
  def validate_project_name
    temp  = ARGV.first
    unless temp.nil? or temp.empty?
      @@command_line_params[:project] = temp.chomp
    else
      Rocket_starter_options::error_with_show_usage("Need project name.")
    end
  end
  
  # default values if not use .rocket_starter file
  def Rocket_starter_options.static_default_values
    defaults = {}
    defaults[:scmtype] = "svn"
    defaults[:scmuri] = ""
    defaults[:scmpassword] = ""
    defaults[:database] = ""
    defaults[:ignoredatabase] = false
    defaults[:verbose] = false
    defaults[:sudo] = false
    defaults[:logging] = false
    defaults[:log_file] = ENV["HOME"] + "/rocket_starter.log"
    defaults[:skip_netbeans] = false
    defaults[:pluginlist_path] = ENV["HOME"] + "/useful_plugins"
    defaults[:skip_plugins] = false
    defaults[:rapt] = false
    defaults[:external] = false
    defaults[:createdb] = false
    defaults[:dbpassword] = ""
    defaults[:emulate] = false
    defaults
  end
  
  # priority static < conf < command line params
  def marge_values
    conf_params = {}
    # can open?
    begin
      File::open(self[:rocket_starter_conf_path]) do |conf_file|
        temp = YAML.load(conf_file.read)
        conf_params = temp if temp
      end
    rescue
    end
    self.merge!(conf_params.merge!(@@command_line_params))
  end
  
end