require 'source/data_construct_pattern/data_construct_pattarn.rb'
require 'source/controllers/create_student_controller.rb'
require 'source/controllers/edit_student_controller.rb'
require 'source/attr_limited_regex_accessor.rb'
require 'logger'

module ShnaiderCode
    class ViewController
        attr_private_accessor :model
        attr_accessor :data_list

        attr_accessor :selected_page

        attr_accessor :on_update_data

        attr_accessor :on_add_student_clicked
        attr_accessor :on_edit_student_clicked

        attr_private_accessor :logger

        def initialize(model, &on_update_data)
            self.model = model
            self.on_update_data = on_update_data

            self.selected_page = 0

            self.data_list = DataListStudentShort.new(list: [], data_constructor: DefaultDataConstructPattern.new())
            self.model.get_students(0, 10, self.data_list)

            self.logger = Logger.new('controller.log')
        end
    end


    # StudentsListViewDelegate
    class ViewController 
        def pages_count
            (model.count / 10.0).ceil
        end

        def table_columns
            self.data_list.get_names
        end

        def next_page
            if self.selected_page != self.pages_count - 1
                self.selected_page += 1
            end

            puts self.selected_page

            update_table()
        end

        def last_page
            if self.selected_page != 0
                self.selected_page -= 1
            end

            puts self.selected_page

            
            update_table()
        end

        def update_table
            begin
                model.get_students(self.selected_page * 10, (self.selected_page + 1) * 10, self.data_list)
            rescue
                logger.error('error in db connection')
            end
            self.on_update_data.call()
        end

        def open_student_creation_window()
            self.logger.info('creating student window open')
            on_add_student_clicked.call()
        end

        def open_student_editing_window(id)
            self.logger.info('editing student window open')
            on_edit_student_clicked.call(id)
        end

        def remove_student(id)
            self.logger.info("student with id #{id} deleted")
            model.remove_student(id)
            update_table()
        end

        def add_student(student)
            self.logger.info("new student added")
            model.add_student(student)
            puts model.count
        end

        def get_student(id)
            model.get_student(id)
        end

        def replace_student(id, student)
            self.logger.info("student with id #{id} updated")
            model.replace_student(id, student)
        end
    end
end