class Jars::Executor

def attach_jar_coordinates( maven )
  load_path = $LOAD_PATH.dup
  require 'bundler/setup'
  done = []
  index = 0
  Gem.loaded_specs.each do |name, spec|
    # TODO get rid of this somehow
    deps = Maven::Tools::GemspecDependencies.new( spec )
    deps.java_dependency_artifacts.each do |a|
      unless done.include? a.key
        maven.property( "jars.#{index}", a.to_s )
        index += 1
        done << a.key
      end
    end
  end
rescue LoadError
  warn "no bundler found - ignore Gemfile if exists"
ensure
  $LOAD_PATH.replace( load_path )
end

def basedir
  File.expand_path( '.' )
end

def exec( *args )
  maven.options[ '-f' ] = File.expand_path( '../lock_down_pom.rb', __FILE__ )
  maven.exec( *args )
end

def initialize( debug = false, verbose = false )
  @debug = debug
  @verbose = verbose
end

def lock_down( options = {} )
  vendor_dir = File.expand_path( options[ :vendor_dir ] ) if options[ :vendor_dir ]
  out = File.expand_path( '.jars.output' )
  tree = File.expand_path( '.jars.tree' )
  maven.property( 'jars.outputFile', out )
  maven.property( 'maven.repo.local', Jars.home )
  maven.property( 'jars.home', vendor_dir ) if vendor_dir
  # TODO move into jar-dependencies
  maven.property( 'jars.lock', File.expand_path( Jars.lock ) )
  maven.property( 'jars.force', options[ :force ] == true )
  maven.property( 'jars.update', options[ :update ] ) if options[ :update ]
  args = [ 'gem:jars-lock' ]
  if options[ :tree ]
    args += [ 'dependency:tree', '-P -gemfile.lock', '-DoutputFile=' + tree ]
  end
  puts
  puts '-- jar root dependencies --'
  puts
  status = exec( *args )
  exit 1 unless status
  if File.exists?( tree )
    puts
    puts '-- jar dependency tree --'
    puts
    puts File.read( tree )
    puts
  end
  puts
  puts File.read( out ).gsub( /#{File.dirname(out)}\//, '' )
  puts
ensure
  FileUtils.rm_f out
  FileUtils.rm_f tree
end

def maven
  @maven ||= maven_new
end

def maven_new
  m = Maven::Ruby::Maven.new
  m.property( 'jars.basedir', File.expand_path( basedir ) )
  m.property( 'jars.jarfile', File.expand_path( Jars.jarfile ) )
  m.property( 'verbose', (debug || verbose) == true )
  if debug
    m.options[ '-X' ] = nil
  elsif verbose
    m.options[ '-e' ] = nil
  else
    m.options[ '-q' ] = nil
  end
  m.verbose = debug
  attach_jar_coordinates( m )
  m
end