#!/usr/bin/env ruby
# Usage:
# - Start new mindmap:
#   `ruby ttymindmap.rb`
# - Open Freemind format MM mindmap:
#   `ruby ttymindmap.rb <PATH-TO-MM-FILE>`
#
# Press `h` key when running for help.

require 'noozoid'

Noozoid::Cli.start(ARGV)

exit 0

def print_help
  puts '= Commands ='
  puts ''
  puts '- Navigation -'
  puts "#{KEYS[:nav_parent]}: go to parent node"
  puts "#{KEYS[:nav_child]}: go to children node"
  puts "#{KEYS[:nav_previous]}: previous sibling"
  puts "#{KEYS[:nav_next]}: next sibling"
  puts ''
  puts "- Action -"
  puts "#{KEYS[:node_create]}: create child node"
  puts "#{KEYS[:node_delete]}: remove node"
  puts "#{KEYS[:node_toggle]}: toggle"
  puts ''
  puts "- Misc -"
  puts "#{KEYS[:main_help]}: show this help"
  puts "#{KEYS[:main_quit]}: exit program"
  puts '[press a key to continue]'
  read_command
end

def read_command
  system("stty raw -echo") #=> Raw mode, no echo
  char = STDIN.getc
  system("stty -raw echo") #=> Reset terminal mode
  char
end

if ARGV.empty?
  print 'Mindmap name: '
  current = root = Node.new(STDIN.gets.chomp)
end

loop do
  print `clear`
  PrettyPrint.tree(root, current)

  cmd = read_command

  if cmd == KEYS[:node_create]
    print 'Title: '
    current[] = Node.new(STDIN.gets.chomp)
  elsif cmd == KEYS[:node_delete]
    current.remove
    current = current.parent unless current.parent.nil?
  elsif cmd == KEYS[:node_toggle]
    current.toggle!
  elsif cmd == KEYS[:nav_child]
    current = current[0] if current.children?
  elsif cmd == KEYS[:nav_parent]
    current = current.parent unless current.parent.nil?
  elsif cmd == KEYS[:nav_previous]
    sibling = current >> -1
    current = sibling unless sibling.nil?
  elsif cmd == KEYS[:nav_next]
    sibling = current >> 1
    current = sibling unless sibling.nil?
  elsif cmd == KEYS[:nav_root]
    current = root
  elsif cmd == KEYS[:main_help]
    print_help
  elsif cmd == KEYS[:main_quit]
    puts 'Good Bye!'
    break
  end
end