class Medoc

# File lib/medoc.rb, line 42
def self.config_file
  @@config_file
end

# File lib/medoc.rb, line 49
def self.init
  if !File.exists? @@config_file
    f = File.new @@config_file, "w"
    f.puts '#############################################'
    f.puts '###           Medoc config file           ###'
    f.puts '###                                       ###'
    f.puts '### Visit https://github.com/acadet/medoc ###'
    f.puts '###     to know more about this file      ###'
    f.puts '#############################################'
  else
    raise MedocError.new "Error: config file is already existing."
  end
end

# File lib/medoc.rb, line 66
def self.run(keyword)
  if !Medoc.load_config
    # No existing config file
    raise MedocError.new 'Error: no config file found. You should run medoc --init.'
  end

  if !@@config
    # No alias
    raise MedocError.new 'Error: no alias defined in config file. Visit https://github.com/acadet/medoc to know how to define aliases.'
  end

  if @@config.has_key? keyword
    instructions = @@config[keyword]
    target = ''

    # Instructions can either be a simple directory
    # or a list of aliases and directories
    if instructions.kind_of? Array
      instructions.each do |e|
        if @@config.has_key?(e) && e != keyword
          # Instruction is an existing alias
          target = append target, Medoc.run(e)
        else
          # Simple directory
          target = append target, e
        end
      end
    else
      # Only a directory
      target = instructions
    end

    return target
  else
    raise MedocError.new "Error: no '#{keyword}' alias in config file."
  end
end

# File lib/medoc.rb, line 35
def self.version
  '1.0.2'
end

# File lib/medoc.rb, line 109
def self.append(path, dir)
  if path.size > 0 && path[path.size - 1] != '/'
    # Append '/' if missing
    "#{path}/#{dir}"
  else
    "#{path}#{dir}"
  end
end

# File lib/medoc.rb, line 121
def self.load_config
  if !@@config.nil?
    # File already loaded
    return true
  end

  # Test if file exists
  if !File.exists? @@config_file
    return false
  end

  @@config = YAML.load_file @@config_file
  true
end