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#!/usr/bin/ruby
%w[socket fileutils yaml]
  .map { require _1 }

HOME = ENV["HOME"] or File.expand_path "~/"
HOSTNAME = Socket.gethostname

class Binding
  def eval_file(path)
    self.eval (File.read path)
  end
end

def eval_file(file)
  file = File.expand_path file
  dir = File.dirname file
  binding.eval_file file
end

def ls(dir)
  Dir.entries(dir).reject {|d| [".", ".."].include? d }
end

def ln(from, to)
  FileUtils.ln_s from, to
end

def write(file, contents)
  File.write file, contents
end

def rm(file)
  FileUtils.rm file
end

def mkdir(dir)
  FileUtils.mkdir_p dir
end

def rmdir(dir)
  FileUtils.rmdir dir
end

require_relative "core"
require_relative "stdlib"

$cmds = {
  show: lambda {|op|
    if op.is_a? Deploy
      puts op.ops
    else
      puts op
    end
  },
  debug: lambda {|op|
    puts op.to_yaml
  },
  check: lambda {|op|
    if op.check
      puts "nothing left to do"
    else
      puts "not fully deployed"
    end
  },
  do: lambda {|op| op.do },
  undo: lambda {|op| op.undo },
}
def main
  command = ARGV.shift.to_sym
  file = ARGV.shift || "#{HOSTNAME}.rb"
  op = eval_file file
  $cmds[command][op]
end

main if __FILE__ == $0