class Jars::MavenExec

def find_spec(allow_no_file)
  specs = Dir['*.gemspec']
  case specs.size
  when 0
    raise 'no gemspec found' unless allow_no_file
  when 1
    specs.first
  else
    raise 'more then one gemspec found. please specify a specfile' unless allow_no_file
  end
end

def initialize(spec = nil)
  @options = {}
  setup(spec)
rescue StandardError, LoadError => e
  # If spec load fails, skip looking for jar-dependencies
  warn "jar-dependencies: #{e}"
  warn e.backtrace.join("\n") if Jars.verbose?
end

def resolve_dependencies_list(file)
  factory = MavenFactory.new(@options)
  maven = factory.maven_new(File.expand_path('gemspec_pom.rb', __dir__))
  is_local_file = File.expand_path(File.dirname(@specfile)) == File.expand_path(Dir.pwd)
  maven.attach_jars(@spec, all_dependencies: is_local_file)
  maven['jars.specfile'] = @specfile.to_s
  maven['outputAbsoluteArtifactFilename'] = 'true'
  maven['includeTypes'] = 'jar'
  maven['outputScope'] = 'true'
  maven['useRepositoryLayout'] = 'true'
  maven['outputDirectory'] = Jars.home.to_s
  maven['outputFile'] = file.to_s
  maven.exec('dependency:copy-dependencies', 'dependency:list')
end

def ruby_maven_install_options=(options)
  @options = options
end

def setup(spec = nil, allow_no_file: false)
  spec ||= find_spec(allow_no_file)
  case spec
  when String
    @specfile = File.expand_path(spec)
    @basedir = File.dirname(@specfile)
    Dir.chdir(@basedir) do
      spec = eval(File.read(@specfile), TOPLEVEL_BINDING, @specfile) # rubocop:disable Security/Eval
    end
  when Gem::Specification
    if File.exist?(spec.loaded_from)
      @basedir = spec.gem_dir
      @specfile = spec.loaded_from
    else
      # this happens with bundle and local gems
      # there the spec_file is "not installed" but inside
      # the gem_dir directory
      Dir.chdir(spec.gem_dir) do
        setup(nil, allow_no_file: true)
      end
    end
  when nil
    # ignore
  else
    Jars.debug('spec must be either String or Gem::Specification. ' \
               'File an issue on github if you need it.')
  end
  @spec = spec
end