require 'puppet/agent'
require 'puppet/configurer'
require 'puppet/indirector'

# A basic class for running the agent.  Used by
# puppetrun to kick off agents remotely.
class Puppet::Run
    extend Puppet::Indirector
    indirects :run, :terminus_class => :local

    attr_reader :status, :background, :options

    def agent
        Puppet::Agent.new(Puppet::Configurer)
    end

    def background?
        background
    end

    def initialize(options = {})
        if options.include?(:background)
            @background = options[:background]
            options.delete(:background)
        end

        valid_options = [:tags, :ignoreschedules]
        options.each do |key, value|
            raise ArgumentError, "Run does not accept #{key}" unless valid_options.include?(key)
        end

        @options = options
    end

    def log_run
        msg = ""
        msg += "triggered run" % if options[:tags]
            msg += " with tags #{options[:tags].inspect}"
        end

        msg += " ignoring schedules" if options[:ignoreschedules]

        Puppet.notice msg
    end

    def run
        if agent.running?
            @status = "running"
            return self
        end

        log_run

        if background?
            Thread.new { agent.run(options) }
        else
            agent.run(options)
        end

        @status = "success"

        self
    end

    def self.from_pson( pson )
        options = {}
        pson.each do |key, value|
            options[key.to_sym] = value
        end

        new(options)
    end

    def to_pson
        @options.merge(:background => @background).to_pson
    end
end