module ActiveExt
  module ExtHelpers
    module FieldBuilder
      class << self

        def build_field(column, value, display_only = false, hidden = false)
          if display_only
            field_json = display_field(column.options)
          elsif hidden
            field_json = hidden_field(column.options)
          elsif column.options[:readonly]
            field_json = display_field(column.options)
          else
            field_json = self.send("build_#{column.sql_type.to_s}_field", column.options)
          end

          field_json[:fieldLabel] = column.name.to_s.humanize
          field_json[:name] = column.name.to_s
          field_json[:allowBlank] = !column.options[:required]

          if display_only
            value = format_display_value(column, value)
          elsif column.options[:readonly]
            value = format_display_value(column, value)
          end

          field_json[:value] = value

          field_json
        end

        def format_display_value(column, value)
          if column.sql_type.to_s == 'date'
            value = value.strfdate('%m/%d/%Y') unless value.nil?
          elsif column.sql_type.to_s == 'datetime'
            value = value.strftime('%m/%d/%Y') unless value.nil?
          end

          value
        end

        def hidden_field(options={})
          field_json = {
              :xtype => 'hidden'
          }

          field_json
        end

        def display_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'displayfield',
              :labelWidth => 140
          }

          field_json
        end

        def build_boolean_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'combo',
              :labelWidth => 140,
              :forceSelection => true,
              :store => [['true', 'True'], ['false', 'False']],
              :triggerAction => 'all'
          }

          field_json
        end

        def build_date_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'datefield',
              :labelWidth => 140
          }

          field_json
        end

        def build_datetime_field(options={})
          field_json = {
              :width => 150,
              :xtype => 'datefield',
              :labelWidth => 140
          }

          field_json
        end

        def build_string_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'textfield',
              :labelWidth => 140
          }

          field_json
        end

        def build_integer_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'numberfield',
              :labelWidth => 140
          }

          field_json
        end

        def build_decimal_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'numberfield',
              :labelWidth => 140
          }

          field_json
        end

        def build_float_field(options={})
          field_json = {
              :width => 250,
              :xtype => 'numberfield',
              :labelWidth => 140
          }

          field_json
        end

        def build_text_field(options={})
          field_json = {
              :width => 150,
              :xtype => 'textarea',
              :labelWidth => 140
          }

          field_json
        end

      end
    end
  end
end