require_relative '../../../models/carto/permission'
require_relative '../../../models/carto/user_table'

module Carto
  module Api
    class TablesController < ::Api::ApplicationController
      ssl_required :show, :create, :update

      before_filter :set_start_time

      before_filter :load_user_table, only: [:show, :update]
      before_filter :read_privileges?, only: [:show]
      before_filter :write_privileges?, only: [:update]

      def show
        table = @user_table.service
        render_jsonp(TablePresenter.new(table, current_user, self).to_poro.merge(schema: table.schema(reload: true)))
      end

      # Very basic controller method to simply make blank tables
      # All other table creation things are controlled via the imports_controller#create
      def create
        table = ::Table.new
        table.user_id = current_user.id

        tables = Carto::Db::UserSchema.new(current_user).table_names
        table.name = Carto::ValidTableNameProposer.new.propose_valid_table_name(params[:name], taken_names: tables)

        table.description    = params[:description]   if params[:description]
        table.the_geom_type  = params[:the_geom_type] if params[:the_geom_type]
        table.force_schema   = params[:schema]        if params[:schema]
        table.tags           = params[:tags]          if params[:tags]
        table.import_from_query = params[:from_query] if params[:from_query]

        if table.valid? && table.save
          render_jsonp(TablePresenter.new(table, current_user, self).to_poro, 200, location: "/tables/#{table.id}")

          table_visualization = table.table_visualization
          if table_visualization
            current_viewer_id = current_viewer.id
            Carto::Tracking::Events::CreatedDataset.new(current_viewer_id,
                                                        visualization_id: table_visualization.id,
                                                        user_id: current_viewer_id,
                                                        origin: 'blank').report
          end
        else
          CartoDB::Logger.error(message: 'Error on tables#create', errors: table.errors.full_messages)
          render_jsonp({ description: table.errors.full_messages, stack: table.errors.full_messages }, 400)
        end
      rescue CartoDB::QuotaExceeded
        current_viewer_id = current_viewer.id
        Carto::Tracking::Events::ExceededQuota.new(current_viewer_id,
                                                   user_id: current_viewer_id).report
        render_jsonp({ errors: ['You have reached your table quota'] }, 400)
      end

      def update
        # TODO This endpoint is only used to geocode from editor, passing `latitude_column` and `longitude_column`
        # TODO It also supports attributes assignement, but this is not called from our frontend
        table = @user_table.service
        warnings = []

        # TODO: this is bad, passing all params blindly to the table object
        @user_table.assign_attributes(params.symbolize_keys.reject { |k, _| k == :name })
        if params.keys.include?('latitude_column') && params.keys.include?('longitude_column')
          latitude_column  = params[:latitude_column]  == 'nil' ? nil : params[:latitude_column].try(:to_sym)
          longitude_column = params[:longitude_column] == 'nil' ? nil : params[:longitude_column].try(:to_sym)
          table.georeference_from!(latitude_column: latitude_column, longitude_column: longitude_column)
          table.update_bounding_box
          render_jsonp(TablePresenter.new(table, current_user, self).to_poro.merge(warnings: warnings))
          return
        end

        if @user_table.save
          render_jsonp(TablePresenter.new(table, current_user, self).to_poro.merge(warnings: warnings))
        else
          render_jsonp({ errors: table.errors.full_messages }, 400)
        end
      rescue => e
        CartoDB::Logger.error(message: 'Error updating table', exception: e)
        render_jsonp({ errors: [translate_error(e.message.split("\n").first)] }, 400)
      end

      private

      def load_user_table
        @user_table = Carto::Helpers::TableLocator.new.get_by_id_or_name(params[:id], current_user)
        raise RecordNotFound unless @user_table
      end

      def read_privileges?
        head(403) unless current_user && @user_table.visualization.is_viewable_by_user?(current_user)
      end

      def write_privileges?
        head(401) unless current_user && @user_table.visualization.writable_by?(current_user)
      end
    end
  end
end