require 'curses'
require 'daigaku/coloring'
require 'daigaku/markdown'

module Daigaku
  class Window < Curses::Window
    include Coloring

    def initialize(height = Curses.lines, width = Curses.cols, top = 0, left = 0)
      super(height, width, top, left)
      init_colors
    end

    def write(text, color = COLOR_TEXT, text_decoration = Curses::A_NORMAL)
      attron(Curses.color_pair(color) | text_decoration) { self << text.to_s }
    end

    def emphasize(text, text_decoration = Curses::A_NORMAL)
      write(text, COLOR_TEXT_EMPHASIZE, text_decoration)
    end

    def heading(text, text_decoration = Curses::A_UNDERLINE)
      write(text, COLOR_HEADING, text_decoration)
    end

    def red(text, text_decoration = Curses::A_NORMAL, options = {})
      colored(text, COLOR_RED, text_decoration, options)
    end

    def yellow(text, text_decoration = Curses::A_NORMAL, options = {})
      colored(text, COLOR_YELLOW, text_decoration, options)
    end

    def green(text, text_decoration = Curses::A_NORMAL, options = {})
      colored(text, COLOR_GREEN, text_decoration, options)
    end

    def colored(text, color, text_decoration = Curses::A_NORMAL, options = {})
      if options[:full_line]
        clear_line(
          color: color,
          text_decoration: Curses::A_STANDOUT,
          start_pos: 1,
          end_pos: maxx - 2
        )

        prefix = ' '
      end

      write("#{prefix}#{text}", color, text_decoration)
    end

    # clear_line(options = {})
    # options: [:color, :text_decoration, :start_pos, :end_pos, :text]
    def clear_line(options = {})
      color           = options[:color] || COLOR_TEXT
      text_decoration = options[:text_decoration] || Curses::A_NORMAL
      start           = options[:start_pos] || 0
      stop            = options[:end_pos] || maxx

      x = curx
      setpos(cury, start)
      write((options[:text] || ' ') * (stop - 1), color, text_decoration)
      setpos(cury, x)
      refresh
    end

    def print_indicator(object, text = ' ', text_decoration = Curses::A_STANDOUT)
      if object.respond_to?(:mastered?) && object.respond_to?(:started?)
        if object.mastered?
          green(text, text_decoration)
        elsif object.started?
          yellow(text, text_decoration)
        else
          red(text, text_decoration)
        end
      elsif object.respond_to?(:mastered?)
        if object.mastered?
          green(text, text_decoration)
        else
          red(text, text_decoration)
        end
      end

      write ' '
    end

    def print_markdown(text)
      clear_line

      printer = Markdown::Printer.new(window: self)
      printer.print(text)
    end
  end
end