dev

#!/usr/bin/env ruby
require 'open3'
require 'yaml'

class DevTool
  CURRENT_DIR = File.dirname(File.symlink?(__FILE__) ? File.readlink(__FILE__) : __FILE__)
  CONFIG_FILE = ENV['DASH_CONFIG'] || File.join(CURRENT_DIR, "config.yml")
  if File.file?(CONFIG_FILE)
    CONFIG = YAML.load(File.open(CONFIG_FILE))
  else
    CONFIG = Hash.new({})
  end
  CONFIG["shared_projects"] ||= {}
  CONFIG["shared_projects"]["dash"] = {
    "help_text" => "Manage Dash services (nginx)",
    "compose_file" => File.join(CURRENT_DIR, "dash.yml")
  }

  MAIN_HELP_BANNER = <<HEREDOC
Execute various commands within the developer environment

Usage:
  dev [options] [COMMAND] [ARGS...]"
  dev -h|--help

Options:
  --verbose                 Show more output
  -v, --version             Print version and exit

Docker Compose Commands:
  build              Build or rebuild services
  bundle             Generate a Docker bundle from the Compose file
  config             Validate and view the compose file
  create             Create services
  down               Stop and remove containers, networks, images, and volumes
  events             Receive real time events from containers
  exec               Execute a command in a running container
  help               Get help on a command
  kill               Kill containers
  logs               View output from containers
  pause              Pause services
  port               Print the public port for a port binding
  ps                 List containers
  pull               Pull service images
  push               Push service images
  restart            Restart services
  rm                 Remove stopped containers
  run                Run a one-off command
  scale              Set number of containers for a service
  start              Start services
  stop               Stop services
  unpause            Unpause services
  up                 Create and start containers
  version            Show the Docker-Compose version information

Additonal Projects:
#{CONFIG["shared_projects"].map{|k,v|"  " + k.to_s.ljust(19) + v["help_text"]}.join("\n")}

HEREDOC
  def initialize(args)
    if args.empty? || (args[0] == "help" && args.length == 1)
      help(args)
      return
    end

    if CONFIG["shared_projects"].keys.include?(args[0])
      project_name = args.shift
      project_file = CONFIG["shared_projects"][project_name]["compose_file"]
    end

    args = modify(args)

    if project_name && project_file
      args.unshift("-f", project_file, "-p", project_name)
    elsif args[0] == "up"
      DevTool.new(["dash", "up"])
    end

    run(args)
  end

  def help(args)
    puts MAIN_HELP_BANNER
  end

  def modify(args)
    case args[0]
      when "run"
        args.insert(1, "--rm") unless args.include?("--rm")
      when "up"
        args.insert(1, "-d") unless args.include?("-d")
    end
    args
  end

  def run(args)
    cmd = args.unshift("docker-compose").join(" ")
    system(cmd)
  end
end

DevTool.new(ARGV) if __FILE__==$0