module Netzke
  module Basepack
    # == Configuration
    # +load_last_preset+ - on load, tries to load the latest saved preset
    class SearchPanel < Base

      include Netzke::Basepack::DataAccessor

      ATTRIBUTE_OPERATORS_MAP = {
        :integer => [
          ["eq", I18n.t('netzke.basepack.search_panel.equals')],
          ["gt", I18n.t('netzke.basepack.search_panel.greater_than')],
          ["lt", I18n.t('netzke.basepack.search_panel.less_than')]
        ],
          :text => [
            ["contains", I18n.t('netzke.basepack.search_panel.contains')] # same as matches => %string%
        ],
        :string => [
          ["contains", I18n.t('netzke.basepack.search_panel.contains')], # same as matches => %string%
          ["matches", I18n.t('netzke.basepack.search_panel.matches')]
        ],
          :boolean => [
            ["is_any", I18n.t('netzke.basepack.search_panel.is_true')],
            ["is_true", I18n.t('netzke.basepack.search_panel.is_true')],
            ["is_false", I18n.t('netzke.basepack.search_panel.is_false')]
        ],
          :datetime => [
            ["eq", I18n.t('netzke.basepack.search_panel.date_equals')],
            ["gt", I18n.t('netzke.basepack.search_panel.after')],
            ["lt", I18n.t('netzke.basepack.search_panel.before')]
        ]
      }

      js_configure do |c|
        c.extend = "Ext.form.FormPanel"
        c.padding = 5
        c.auto_scroll = true
        c.require :condition_field
        c.mixin
        c.attribute_operators_map = ATTRIBUTE_OPERATORS_MAP
      end

      # Builds default query search panel, where each field is presented
      def default_query
        data_class.column_names.map do |c|
          column_type = data_class.columns_hash[c].type
          operator = (ATTRIBUTE_OPERATORS_MAP[column_type] || []).first.try(:fetch, 0) || "matches"
          {:attr => c, :attr_type => column_type, :operator => operator}
        end
      end

      def data_class
        @data_class ||= config[:model].constantize
      end

      def js_config
        super.merge(
          :attrs => attributes,
          :attrs_hash => data_class.column_names.inject({}){ |hsh,c|
            hsh.merge(c => data_adapter.get_property_type(data_class.columns_hash[c])) },
          :preset_query => (config[:load_last_preset] ? last_preset.try(:fetch, "query") : config[:query]) || []
        )
      end

      def attributes
        config[:fields].map do |field|
          [field[:name], field[:field_label]]
        end
      end

      def last_preset
        (state[:presets] || []).last
      end

    end
  end
end