#! /usr/bin/ruby -w

# :main: README

require 'rake'
require 'ostruct'
require 'optparse'

require 'autobuild/options'
require 'autobuild/config'
require 'autobuild/logging'
require 'daemons'

DEFAULT_HTTP_PORT = 2000

def parse_options(args)
    options = Options.default

    parser = OptionParser.new do |opts|
        opts.banner = "Usage: autobuild [options] config.yml"
        opts.separator ""

        opts.on("--srcdir PATH", "Find or imports sources in PATH") do |options.srcdir| end
        opts.on("--prefix PATH", "Packages are installed in PATH") do |options.prefix|
            options.logdir = "#{options.prefix}/autobuild"
        end
        opts.on("--logdir", "Where logs are saved (default: <prefix>/autobuild)") do |options.logdir| end

        opts.on("--[no-]update", "Update already checked-out sources") do |options.update| end

        opts.on('--nice NICE', Integer, 'Nice the subprocesses to the given value') do |options.nice| end
        opts.on("--[no-]daemon", "Go into daemon mode") do |options.daemonize| end
        #opts.on("--http [PORT]", Integer, 
        #        "Display a HTTP information page on PORT (PORT default: #{DEFAULT_HTTP_PORT})") do |port| 
        #    options.http = (port || DEFAULT_HTTP_PORT)
        #end
        opts.on("--[no-]verbose", "Display output of commands on stdout") do |options.verbose| end
        opts.on("--[no-]debug", "Verbose information (for debugging purposes)") do |options.debug| end

        opts.on_tail("-h", "--help", "Show this message") do
            puts opts
            exit
        end
    end

    parser.parse!(args)
    if !args[0]
        puts parser
        exit
    end

    [ options, args[0], args[1..-1] ]
end

# Load the command line options
options, conffile, targets = parse_options(ARGV)

# make conffile an absolute path since daemonize mode makes
# / the current directory
conffile = File.expand_path(conffile, Dir.pwd)
if options.daemonize
    puts "Going into daemon mode ..."
    Daemons.daemonize 
end

File.open(conffile) do |f|
    Config.load(f, options)
end

begin
    if targets.empty?
        Rake::Task[:default].invoke
    else
        targets.each { |t| Rake::Task[t.to_sym].invoke }
    end
    success
rescue BuildException => error
    error(error, "Error during build of #{error.target}")
    exit(1)
end