#!/usr/bin/env ruby
require 'fileutils'

arg=ARGV[0]
arg="path" if !arg or arg.empty?

dyn_srv_plist=File.expand_path("~/Library/LaunchAgents/dyn-srv.plist") if RUBY_PLATFORM =~ /darwin/

case arg
when "help"
	puts <<-DOC
launchctl helpers to launch dyn-srv service.
Usage: dyn-init path    => create ~/dyndoc folder
dyn-init srv new|load   => create when not existing the dyn-srv service
dyn-init srv unload     => unload existing service
dyn-init srv start/stop => start/stop the dyn-srv service
dyn-init srv [list]     => list dyn-srv service
DOC
when "path"
	share_path=File.expand_path("../../share", __FILE__)
	dyndoc_path=File.join(ENV["HOME"],"dyndoc")
	unless File.exist? dyndoc_path
		FileUtils.mkdir_p dyndoc_path
		FileUtils.cp_r File.join(share_path,"."),dyndoc_path
	else
		puts "Warning: #{dyndoc_path} folder already exists!"
	end
when "srv" # MacOSX user only
	if RUBY_PLATFORM =~ /darwin/
		mode=ARGV[1]
		mode="list" if !mode or mode.empty?
		case mode
		when "load","new"
			unless File.exists? dyn_srv_plist
				plist= <<-END.sub(/DYNSRV/,`which dyn-srv`.strip)
				<?xml version="1.0" encoding="UTF-8"?>
				<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
				<plist version="1.0">
				<dict>
				<key>Label</key>
				<string>dyn-srv</string>
				<key>ProgramArguments</key>
				<array>
				<string>DYNSRV</string>
				</array>
				<key>RunAtLoad</key>
				<true/>
				<key>KeepAlive</key>
				<dict>
				<key>Crashed</key>
				<true/>
				</dict>
				<key>StandardErrorPath</key>
				<string>/tmp/dyn-srv.err</string>
				<key>StandardOutPath</key>
				<string>/tmp/dyn-srv.out</string>
				</dict>
				</plist>
				END
				File.open(dyn_srv_plist,"w") do |f|
					f << plist
				end
			end
			`launchctl load #{dyn_srv_plist}`
		when "unload"
			if File.exists? dyn_srv_plist
				`launchctl unload #{dyn_srv_plist}`
			else
				puts "Service dyn-srv not available. Create it first: dyn-init srv new"
			end
		when "start", "stop"
			`launchctl #{mode} dyn-srv`
		when "list"
			puts `launchctl list | grep dyn`
		when "log"
			puts "Error:"
			puts File.read("/tmp/dyn-srv.err")
			puts "Out:"
			puts File.read("/tmp/dyn-srv.out")
		end
	end
end