require 'mj/tools/subprocess'
require 'build-tool/build-system/base'

module BuildTool; module BuildSystem


    #
    # Custom Build system.
    #
    # Uses scripts do to the actual work.
    #
    class Custom < Base

        include MJ::Tools::SubProcess

        class CustomError < BuildTool::Error; end

        def initialize( *args )
            super( *args )
        end

        #
        ### ATTRIBUTES
        #

        # Check if the module is configured
        def configured?
        end

        def name
            "custom"
        end

        #
        ### METHODS
        #

        # Configure the module
        def reconfigure()
            raise NotImplementedError
        end

        def configure
            check_build_directory( true )
            execute( "configure.sh" )
        end

        def execute( script )
            path = self.recipe.find_first_config_file( "custom/%s/%s" % [ self.module.name, script.to_s ] )
            if path.nil?
                raise CustomError, "Script configure.sh for %s not found!" % self.module.name
            end
            if !path.executable?
                raise CustomError, "Script %s not executable!" % path.to_s
            end
            command = "%s %s" % [ path.to_s, source_directory ]
            rc = self.module.environment.execute(
                command,
                build_directory,
                {
                    'INSTALL_PREFIX' => install_prefix.to_s,
                }.merge(Hash[option_hash]))
            if rc != 0
                raise CustomError, "#{command.to_s} failed with error code #{rc}";
            end
        end

        def install( fast )
            execute( "install.sh" )
        end

        def install_fast_supported?
            false
        end

        def make( target = nil )
            execute( "compile.sh" )
        end

        def option_string
            arr = []
            option_names.each do |var|
                val = self[var]
                arr << "-D#{var}='#{val}'"
            end
            arr.join(" ")
        end

    end # class Custom

end; end # module BuildTool::BuildSystem