# Copyright (c) 2007-2022 Andy Maleh
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'glimmer-dsl-swt'
require 'yaml'

require_relative 'quarto/model/game'
require_relative 'quarto/view/board'
require_relative 'quarto/view/available_pieces_area'
require_relative 'quarto/view/selected_piece_area'
require_relative 'quarto/view/message_box_panel'

class Quarto
  include Glimmer::UI::CustomShell
  
  BOARD_DIAMETER = 430
  PIECES_AREA_WIDTH = 252
  AVAILABLE_PIECES_AREA_HEIGHT = 295
  SELECTED_PIECE_AREA_HEIGHT = 124
  CELL_DIAMETER = 68
  CELL_LINE_WIDTH = 5
  CELL_MARGIN = 7
  SHELL_MARGIN = 15
  AREA_MARGIN = 10
  ROW_COUNT = 4
  COLUMN_COUNT = 4
  COLOR_WOOD = rgb(239, 196, 156)
  COLOR_AREA = rgb(206, 188, 170)
  COLOR_LIGHT_WOOD = rgb(254, 187, 120)
  COLOR_DARK_WOOD = rgb(204, 108, 58)
  FILE_QUARTO_CONFIG = File.join(Dir.home, '.quarto')
  
  before_body do
    load_quarto_config
    @game = Model::Game.new
    
    observe(@game, :current_move) do |new_move|
      perform_current_move
    end
    
    observe(@game, :over) do |game_over_status|
      if game_over_status
        game_over_message = "Game Over! "
        game_over_message += @game.winner_player_number.nil? ? "Draw!" : "Player #{@game.winner_player_number} wins!"
        body_root.content {
          @open_message_box_panel&.close
          @open_message_box_panel = message_box_panel(
            message: game_over_message,
            background_color: COLOR_LIGHT_WOOD,
            text_font: {height: 16}
          ) {
            on_closed do
              restart_game
            end
          }
        }
      end
    end
  end
  
  after_body do
    perform_current_move
  end
  
  body {
    shell(:shell_trim, (:double_buffered unless OS.mac?)) {
      text 'Glimmer Quarto'
      minimum_size BOARD_DIAMETER + AREA_MARGIN + PIECES_AREA_WIDTH + SHELL_MARGIN*2 + (OS.linux? ? 52 : (OS.windows? ? 16 : 0)), BOARD_DIAMETER + 24 + SHELL_MARGIN*2 + (OS.linux? ? 96 : (OS.windows? ? 32 : 0))
      maximum_size BOARD_DIAMETER + AREA_MARGIN + PIECES_AREA_WIDTH + SHELL_MARGIN*2 + (OS.linux? ? 52 : (OS.windows? ? 16 : 0)), BOARD_DIAMETER + 24 + SHELL_MARGIN*2 + (OS.linux? ? 96 : (OS.windows? ? 32 : 0))
      background COLOR_WOOD
      
      quarto_menu_bar
      
      @board = board(game: @game, location_x: SHELL_MARGIN, location_y: SHELL_MARGIN)
  
      @available_pieces_area = available_pieces_area(game: @game, location_x: SHELL_MARGIN + BOARD_DIAMETER + AREA_MARGIN, location_y: SHELL_MARGIN)
      @selected_piece_area = selected_piece_area(game: @game, location_x: SHELL_MARGIN + BOARD_DIAMETER + AREA_MARGIN, location_y: SHELL_MARGIN + AVAILABLE_PIECES_AREA_HEIGHT + AREA_MARGIN)
    }
  }
  
  def quarto_menu_bar
    menu_bar {
      menu {
        text 'Game'
        
        menu_item {
          text 'Restart'
          
          on_widget_selected do
            restart_game
          end
        }
        
        menu_item {
          text 'Exit'
          
          on_widget_selected do
            exit(0)
          end
        }
      }
      menu {
        text 'Help'
        
        menu_item(:check) {
          text 'Help Pop-Ups Enabled'
          selection <=> [self, :help_pop_ups_enabled]
        }
      }
    }
  end
  
  def help_pop_ups_enabled
    @quarto_config[:help_pop_ups_enabled]
  end
  alias help_pop_ups_enabled? help_pop_ups_enabled
  
  def help_pop_ups_enabled=(new_value)
    @quarto_config[:help_pop_ups_enabled] = new_value
    save_quarto_config
  end
  
  def load_quarto_config
    @quarto_config = YAML.load(File.read(FILE_QUARTO_CONFIG)) rescue {}
    @quarto_config[:help_pop_ups_enabled] = true if @quarto_config[:help_pop_ups_enabled].nil?
    @quarto_config
  end
  
  def save_quarto_config
    File.write(FILE_QUARTO_CONFIG, YAML.dump(@quarto_config))
  rescue => e
    puts "Unable to save quarto config file to: #{@quarto_config}"
  end
  
  def perform_current_move
    verbiage = nil
    case @game.current_move
    when :select_piece
      @available_pieces_area.pieces.each {|piece| piece.drag_source = true}
      verbiage = "Player #{@game.current_player_number} must drag a piece to the Selected Piece\narea for the other player to place on the board!"
    when :place_piece
      @available_pieces_area.pieces.each {|piece| piece.drag_source = false}
      @selected_piece_area.selected_piece.drag_source = true
      verbiage = "Player #{@game.current_player_number} must drag the selected piece to the board\nin order to place it!"
    end
    body_root.text = "Glimmer Quarto | Player #{@game.current_player_number} #{@game.current_move.to_s.split('_').map(&:capitalize).join(' ')}"
    if help_pop_ups_enabled?
      async_exec do
        body_root.content {
          @open_message_box_panel&.close
          @open_message_box_panel = message_box_panel(
            message: verbiage,
            background_color: COLOR_LIGHT_WOOD,
            text_font: {height: 16}
          )
        }
        body_root.redraw
      end
    end
  end
  
  def restart_game
    @available_pieces_area.reset_pieces
    @selected_piece_area.reset_selected_piece
    @board.reset_cells
    @game.restart
  end
end

Quarto.launch