require 'rails/generators'
require 'rails/generators/migration'

module Humdrum
  module Generators
    class ResourceGenerator < Rails::Generators::Base
      
      include Rails::Generators::Migration
      
      def self.next_migration_number(path)
        @migration_number = Time.now.utc.strftime("%Y%m%d%H%M%S").to_i.to_s
      end
      
      source_root File.expand_path('../templates', __FILE__)
      
      desc "Generates a controller, view and route entries for CRUD operations of a resource"
      
      argument :resource_name, :type=>:string
      argument :fields, :type=>:hash, :banner =>"Resource Fields."
      
      class_option :fluid, :type => :boolean, :default => true, :desc => "Pass true to create fluid layouts"
      class_option :debug, :type => :boolean, :default => false, :desc => "This will print the arguments for debugging"
      
      class_option :front_end_framework, :type => :string, :default => 'gumby', :desc => "Support Twitter Bootstrap (twitter.github.io/bootstrap/) and Gumpy (http://gumbyframework.com/). Default is bootstrap. Pass gumby for Gumby Framework"
      
      def debug_args
        print_args if options.debug?
      end
      
      def generate_controllers
        template "controllers/resource_controller.rb", "app/controllers/#{controller_path}_controller.rb"
      end
      
      def generate_views
        template "views/#{options.front_end_framework}/resource/_edit.html.erb", "app/views/#{controller_path}/_edit.html.erb"
        template "views/#{options.front_end_framework}/resource/_filters.html.erb", "app/views/#{controller_path}/_filters.html.erb"
        template "views/#{options.front_end_framework}/resource/_form.html.erb", "app/views/#{controller_path}/_form.html.erb"
        template "views/#{options.front_end_framework}/resource/_index.html.erb", "app/views/#{controller_path}/_index.html.erb"
        template "views/#{options.front_end_framework}/resource/_item.html.erb", "app/views/#{controller_path}/_item.html.erb"
        template "views/#{options.front_end_framework}/resource/_nav_filters.html.erb", "app/views/#{controller_path}/_nav_filters.html.erb"
        template "views/#{options.front_end_framework}/resource/_new.html.erb", "app/views/#{controller_path}/_new.html.erb"
        template "views/#{options.front_end_framework}/resource/_show.html.erb", "app/views/#{controller_path}/_show.html.erb"
        template "views/#{options.front_end_framework}/resource/_summary.html.erb", "app/views/#{controller_path}/_summary.html.erb"
        template "views/#{options.front_end_framework}/resource/create.js.erb", "app/views/#{controller_path}/create.js.erb"
        template "views/#{options.front_end_framework}/resource/destroy.js.erb", "app/views/#{controller_path}/destroy.js.erb"
        template "views/#{options.front_end_framework}/resource/edit.js.erb", "app/views/#{controller_path}/edit.js.erb"
        template "views/#{options.front_end_framework}/resource/index.js.erb", "app/views/#{controller_path}/index.js.erb"
        template "views/#{options.front_end_framework}/resource/new.js.erb", "app/views/#{controller_path}/new.js.erb"
        template "views/#{options.front_end_framework}/resource/show.js.erb", "app/views/#{controller_path}/show.js.erb"
        template "views/#{options.front_end_framework}/resource/update.js.erb", "app/views/#{controller_path}/update.js.erb"
        template "views/#{options.front_end_framework}/resource/index.html.erb", "app/views/#{controller_path}/index.html.erb"
      end
      
      def generate_models
        template "models/resource.rb", "app/models/#{model_path}.rb"
      end
      
      def generate_javascript_validations
        template "javascripts/validations/validator.js", "app/assets/javascripts/validations/#{model_path}.js"
      end
      
      def generate_migrations
        migration_template "migrations/create_resources.rb", "db/migrate/create_#{instances_name}"
      end
      
      def generate_routes
        words = name_phrases
        resource = words.pop
        route words.reverse.inject("resources :#{resource.pluralize}") { |acc, phrase|
          "namespace(:#{phrase}){ #{acc} }"
        }
      end
      
      def generate_locales
        template "config/locales/humdrum.en.yml", "config/locales/humdrum.en.yml"
      end
      
      private
      
      def print_args
        puts ":fields: #{fields}"
        puts ":form_link_param: #{form_link_param}"
        puts "name_phrases: #{name_phrases}"
        puts "controller_path: #{controller_path}"
        puts "controller_class: #{controller_class}"
        puts "model_path: #{model_path}"
        puts "model_class: #{model_class}"
        puts "instance_name: #{instance_name}"
        puts "instances_name: #{instances_name}"
        puts "table_name: #{table_name}"
        
        puts "index path: #{resource_link}"
        puts "show path: #{resource_link('show')}"
        puts "new path: #{resource_link('new')}"
        puts "edit path: #{resource_link('edit')}"
        puts "create path: #{resource_link('create')}"
        puts "update path: #{resource_link('update')}"
        puts "destroy path: #{resource_link('destroy')}"
        
        puts "index url: #{resource_link('index','url')}"
        puts "show url: #{resource_link('show','url')}"
        puts "new url: #{resource_link('new','url')}"
        puts "edit url: #{resource_link('edit','url')}"
        puts "create url: #{resource_link('create','url')}"
        puts "update url: #{resource_link('update','url')}"
        puts "destroy url: #{resource_link('destroy','url')}"
      end
      
      def name_phrases
        if resource_name.include?('::')
          resource_name.split("::")
        elsif resource_name.include?('/')
          resource_name.split("/")
        else
          [resource_name]
        end
      end
      
      def controller_path
        words = name_phrases
        resource = words.pop
        if words.any?
          words.collect(&:downcase).join("/") + "/#{resource.pluralize}"
        else
          "#{resource.pluralize}"
        end
      end
      
      def controller_class
        words = name_phrases
        resource = words.pop
        if words.any?
          words.collect(&:camelize).join("::") + "::#{resource.camelize.pluralize}Controller"
        else
          "#{resource.camelize.pluralize}Controller"
        end
      end
      
      def model_path
        name_phrases.last.downcase
      end
      
      def model_class
        name_phrases.last.camelize
      end
      
      def instance_name
        name_phrases.last.underscore
      end
      
      def instances_name
        instance_name.pluralize
      end
      
      def table_name
        instances_name
      end
      
      def resource_link(actn='index', ltype='path')
        map = {
          'index' => '',
          'show' => '',
          'edit' => 'edit_',
          'new' => 'new_',
          'update' => '',
          'create' => '',
          'destroy' => '',
        }
        words = name_phrases
        resource = words.pop
        if actn == "index"
          map[actn] + (words.any? ? words.join("_" + "_") : "") + resource.pluralize + "_" + ltype
        else
          map[actn] + (words.any? ? words.join("_") + "_" : "") + resource + "_" + ltype
        end
      end 
      
      def form_link_param
        words = name_phrases
        resource = words.pop
        if words.any?
          # to print like this [:admin, :user, :location, @chakka]
          # in form.html.erb
          "[" + (words.map{|x| ":" + x.downcase} << "@" + resource.downcase).join(", ") + "]"
        else
          "@#{resource.downcase}"
        end
      end
      
      def input_type(name, type)
        if name.include?("email") && type == "string"
          return "email"
        elsif name.include?("password") && type == "string"
          return "password"
        elsif (name.include?("phone") || name.include?("mobile")) && type == "string"
          return "tel"
        else
          case type
          when "string"
            "text"
          when "text"
            "textarea"
          when "integer"
            "number"
          when "references"
            "type"
          when "date"
            "date"
          when "datetime"
            "datetime-local"
          when "timestamp", "time"
            "time"
          end
        end
      end
      
      ## List of all the string fields 
      def string_fields
        main_field = main_string_field
        fields.map{|name, type| name if name != main_field && type == "string" }.uniq.compact
      end
      
      ## List of all the string fields including main field
      def string_fields_including_main_field
        main_field = main_string_field
        fields.map{|name, type| name if type == "string" }.uniq.compact
      end
      
      ## The main string field like 'name'
      def main_string_field
        fields.map{|name, type| name if name.include?("name") && type == "string"}.uniq.compact || fields.keys.any? ? fields.keys.first : "id"
      end
      
      ## Text Fields like description or summary
      def text_fields
        fields.map{|name, type| name if type == "text"}.uniq.compact
      end
    	
      def container_class
        if options.front_end_framework == "bootstrap"
          options.fluid? ? "container-fluid" : "container"
        elsif options.front_end_framework == "gumby"
          "container"
        else
          "container"
        end
      end
      
      def row_class
        if options.front_end_framework == "bootstrap"
          options.fluid? ? "row-fluid" : "row"
        elsif options.front_end_framework == "gumby"
          "row"
        else
          "row"
        end
      end
      
      def column_class(grid_width_value)
        grid_width_value_hash = {"1" => "one", 
                                 "2" => "two",
                                 "3" => "three",
                                 "4" => "four",
                                 "5" => "five",
                                 "6" => "six",
                                 "7" => "seven",
                                 "8" => "eight",
                                 "9" => "nine",
                                 "10" => "ten",
                                 "11" => "eleven",
                                 "12" => "twelve",
                                 "13" => "thirteen",
                                 "14" => "fourteen",
                                 "15" => "fifteen",
                                 "16" => "sixteen"}
        if options.front_end_framework == "bootstrap"
          "span#{grid_width_value}"
        elsif options.front_end_framework == "gumby"
          "#{grid_width_value_hash[grid_width_value.to_s]} columns"
        else
          "col#{grid_width_value}"
        end
      end
      
      # This function is not used now.
      def button_class(color, size, rounded="", pretty="")
        if options.front_end_framework == "bootstrap"
          color_hash = {"blue" => "btn-primary", 
                       "light-blue" => "btn-info",
                       "grey" => "",
                       "black" => "btn-inverse",
                       "red" => "btn-danger",
                       "green" => "btn-success",
                       "orange" => "btn-warning"}
          size_hash = {"large" => "btn-large",
                      "medium" => "",
                      "small" => "btn-tiny"}
        elsif options.front_end_framework == "gumby"
          color_hash = {"blue" => "primary", 
                       "dark-green" => "secondary",
                       "grey" => "default",
                       "black" => "info",
                       "red" => "danger",
                       "green" => "success",
                       "orange" => "warning"}
           size_hash = {"xlarge" => "xlarge", 
                       "large" => "large",
                       "medium" => "medium",
                       "small" => "small",
                       "green" => "btn-success"}
        end
        "#{pretty.blank? ? "" : "#{pretty} "}#{rounded.blank? ? "" : "#{rounded} "}#{size_hash[size]} #{color_hash[color]} btn"
      end
      
    end
  end
end