require 'build-tool/application'
require 'build-tool/commands'

module BuildTool; module Commands;

    #
    # BuildCommand
    #
    class Build < ModuleBasedCommand

        name        "build"
        description "Build a module."
        long_description [ "Build the given modules. This is the all in one interface to build-tool." ]

        # Log this command if $noop is not active
        def log?
            ! $noop
        end

        def initialize_options
            @options.banner = "Usage: #{Pathname.new($0).basename} #{self.fullname} [MODULES]..."

            @options.separator "Options:"
            @clean        = false
            @configure    = false
            @from_scratch = false
            @build        = true
            @install      = true
            @reconfigure  = false
            @update       = false

            options.on( "--[no-]clean", "Make clean before building." ) { |t|
                @clean = t
                }

            options.on( "--[no-]install", "Do not install" ) { |t|
                @install = t
                }

            options.on( "--[no-]update", "Do not update from the repository" ) { |t|
                @update = t
                }

            options.on( "-c", "--configure", "Run the configuration step again" ) { |t|
                @configure = true
                }

            options.on( "--reconfigure", "Remove old configuration then run configuration again" ) { |t|
                @reconfigure = true
                }

            options.on( nil, "--from-scratch", "Rebuild from scratch" ) { |t|
                @from_scratch = true
                }


            super
        end

        def applicable?
            BuildTool::Application.instance.has_recipe?
        end

        def is_module_ready?( mod )
            isready = true
            @update  &&                         isready &= mod.ready_for_vcs_access
            if !@update and (@build or @install or @configure)
                if !mod.checkedout?
                    logger.warn "#{mod.name}: is not checked out. Skipping (add -u for checkout)"
                end
            end
            @install &&                         isready &= mod.prepare_for_installation
            return isready
        end # is_module_ready

        def prepare_module( mod )
            isready = true
            @update  &&                         isready &= mod.prepare_for_vcs_access
            return isready
        end # prepare_module

        def do_execute_module( mod )

            if not ( $noop or mod.checkedout? or @update )
                # If the module is not checked out or $noop is active skip the module
                logger.warn "Module is not checked out! Use -u to check it out."
                logger.warn "skipped!"
                return 0
            end

            # fetch/rebase
            if @update
                if mod.checkedout?
                    fetch( mod )
                    rebase( mod )
                else
                    clone( mod )
                end
            end

            # clean/from-scratch
            if @from_scratch
                remove_build_directory( mod )
            elsif @clean
                clean( mod )
            end

            # configure
            if @configure or @reconfigure or !mod.configured?
                if @reconfigure
                    reconfigure( mod )
                else
                    # See outer if. @configure or !mod.configured?
                    configure( mod )
                end
            end

            # build
            if @build
                make( mod )
            end

            # install
            if @install
                install( mod, true )
            end

        end # do_execute_module

        def teardown_command
            cleanup_after_vcs_access
        end

    end # class Build


end; end # module BuildTool::Commands