#! /usr/bin/ruby -w

# :main: README

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

require 'autobuild/config'
require 'autobuild/logging'

def parse_options(args)
    options = OpenStruct.new
    options.noupdate = false
    options.srcdir = nil
    options.prefix = nil
    options.builddir = "build"
    options.logdir = nil
    $VERBOSE = false

    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 |p|
            options.srcdir = p
        end

        opts.on("--prefix PATH", "Packages are installed in PATH") do |p|
            options.prefix = p
            options.logdir = "#{p}/autobuild"
        end

        opts.on("--logdir", "Where logs are saved (default: <prefix>/autobuild)") do |p|
            options.logdir = p
        end

        opts.on("--noupdate", "Do not update already checked-out sources") do
            options.noupdate = true
        end

        opts.on("--verbose", "Display output of commands on stdout") do
            $VERBOSE = true
        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)
Config.load(conffile, options)

$DEBUG = true
if $DEBUG
    $trace = true
end

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