# frozen_string_literal: true

module Cryptum
  # Cryptum::Event Namespace
  module Event
    # This Module is used to Scroll through
    # Order Plan and Order History Window Panes
    module Scroll
      # Supported Method Parameters::
      # Cryptum::Event::Scroll.up(
      # )
      public_class_method def self.up(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_up_arrow = false

        if event_history.order_plan_win_active
          event_history.order_plan_row_to_select -= 1
          event_history.order_plan_index_offset -= 1 if event_history.order_plan_row_to_select.negative?
          event_history.order_plan_index_offset = 0 if event_history.order_plan_index_offset.negative?
          event_history.order_plan_row_to_select = 0 if event_history.order_plan_row_to_select.negative?
        end

        if event_history.order_execute_win_active
          event_history.order_execute_row_to_select -= 1
          event_history.order_execute_index_offset -= 1 if event_history.order_execute_row_to_select.negative?
          event_history.order_execute_index_offset = 0 if event_history.order_execute_index_offset.negative?
          event_history.order_execute_row_to_select = 0 if event_history.order_execute_row_to_select.negative?
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Supported Method Parameters::
      # Cryptum::Event::Scroll.down(
      # )
      public_class_method def self.down(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_down_arrow = false

        order_book = event_history.order_book

        if event_history.order_plan_win_active
          order_plan_length = order_book[:order_plan].length
          last_row = order_plan_length - 1
          event_history.order_plan_max_records_available_to_display = last_row if last_row < event_history.order_plan_max_rows_to_display

          event_history.order_plan_row_to_select += 1
          event_history.order_plan_index_offset += 1 if event_history.order_plan_row_to_select > event_history.order_plan_max_records_available_to_display
          event_history.order_plan_row_to_select = event_history.order_plan_max_records_available_to_display if event_history.order_plan_row_to_select > event_history.order_plan_max_records_available_to_display
        end

        if event_history.order_execute_win_active
          order_history_meta_length = order_book[:order_history_meta].length
          last_row = order_history_meta_length - 1
          event_history.order_execute_max_records_available_to_display = last_row if last_row < event_history.order_execute_max_rows_to_display

          event_history.order_execute_row_to_select += 1
          event_history.order_execute_index_offset += 1 if event_history.order_execute_row_to_select > event_history.order_execute_max_records_available_to_display
          event_history.order_execute_row_to_select = event_history.order_execute_max_records_available_to_display if event_history.order_execute_row_to_select > event_history.order_execute_max_records_available_to_display
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Supported Method Parameters::
      # Cryptum::Event::Scroll.page_up(
      # )
      public_class_method def self.page_up(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_page_up = false

        if event_history.order_plan_win_active
          event_history.order_plan_row_to_select = 0
          event_history.order_plan_index_offset -= event_history.order_plan_max_rows_to_display + 1
          event_history.order_plan_index_offset = 0 if event_history.order_plan_index_offset.negative?
          event_history.order_plan_row_to_select = 0 if event_history.order_plan_row_to_select.negative?
        end

        if event_history.order_execute_win_active
          event_history.order_execute_row_to_select = 0
          event_history.order_execute_index_offset -= event_history.order_execute_max_rows_to_display + 1
          event_history.order_execute_index_offset = 0 if event_history.order_execute_index_offset.negative?
          event_history.order_execute_row_to_select = 0 if event_history.order_execute_row_to_select.negative?
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Supported Method Parameters::
      # Cryptum::Event::Scroll.page_down(
      # )
      public_class_method def self.page_down(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_page_down = false

        order_book = event_history.order_book

        if event_history.order_plan_win_active
          order_plan_length = order_book[:order_plan].length
          event_history.order_plan_row_to_select = 0
          event_history.order_plan_index_offset += event_history.order_plan_max_rows_to_display + 1 unless event_history.order_plan_index_offset > order_plan_length
        end

        if event_history.order_execute_win_active
          order_history_meta_length = order_book[:order_history_meta].length
          event_history.order_execute_row_to_select = 0
          event_history.order_execute_index_offset += event_history.order_execute_max_rows_to_display + 1 unless event_history.order_execute_index_offset > order_history_meta_length
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Supported Method Parameters::
      # Cryptum::Event::Scroll.top(
      # )
      public_class_method def self.top(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_home = false

        if event_history.order_plan_win_active
          event_history.order_plan_row_to_select = 0
          event_history.order_plan_index_offset = 0
        end

        if event_history.order_execute_win_active
          event_history.order_execute_row_to_select = 0
          event_history.order_execute_index_offset = 0
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Supported Method Parameters::
      # Cryptum::Event::Scroll.bottom(
      # )
      public_class_method def self.bottom(opts = {})
        terminal_win = opts[:terminal_win]
        event_history = opts[:event_history]

        terminal_win.key_press_event.key_ansi = false
        terminal_win.key_press_event.key_esc = false
        terminal_win.key_press_event.key_end = false

        order_book = event_history.order_book

        if event_history.order_plan_win_active
          order_plan_length = order_book[:order_plan].length
          last_row = order_plan_length - 1
          event_history.order_plan_max_records_available_to_display = last_row if last_row < event_history.order_plan_max_rows_to_display

          event_history.order_plan_row_to_select = event_history.order_plan_max_records_available_to_display
          event_history.order_plan_index_offset = order_plan_length - event_history.order_plan_max_records_available_to_display
        end

        if event_history.order_execute_win_active
          order_history_meta_length = order_book[:order_history_meta].length
          last_row = order_history_meta_length - 1
          event_history.order_execute_max_records_available_to_display = last_row if last_row < event_history.order_execute_max_rows_to_display

          event_history.order_execute_row_to_select = event_history.order_execute_max_records_available_to_display
          event_history.order_execute_index_offset = order_history_meta_length - event_history.order_execute_max_records_available_to_display
        end
      rescue Interrupt, StandardError => e
        Cryptum::Log.append(level: :error, msg: e, which_self: self, event_history: event_history)
      end

      # Display Usage for this Module
      public_class_method def self.help
        puts "USAGE:
          #{self}.up()
          #{self}.down()
          #{self}.page_up()
          #{self}.page_down()
          #{self}.top()
          #{self}.bottom()
        "
      end
    end
  end
end