# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with this
# work for additional information regarding copyright ownership.  The ASF
# licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations under
# the License.


require 'buildr/core/project'


module Java

  # *Deprecated:* In earlier versions, Java.wrapper served as a wrapper around RJB/JRuby.
  # From this version forward, we apply with JRuby style for importing Java classes:
  #   Java.java.lang.String.new('hai!')
  # You still need to call Java.load before using any Java code: it resolves, downloads
  # and installs various dependencies that are required on the classpath before calling
  # any Java code (e.g. Ant and its tasks).
  class JavaWrapper

    include Singleton

    # *Deprecated:* Append to Java.classpath directly.
    def classpath
      Buildr.application.deprecated 'Append to Java.classpath instead.'
      ::Java.classpath
    end

    def classpath=(paths)
      fail 'Deprecated: Append to Java.classpath, you cannot replace the classpath.'
    end

    # *Deprecated:* No longer necessary.
    def setup
      Buildr.application.deprecated 'See documentation for new way to access Java code.'
      yield self if block_given?
    end

    # *Deprecated:* Use Java.load instead.
    def load
      Buildr.application.deprecated 'Use Java.load instead.'
      ::Java.load
    end

    alias :onload :setup

    # *Deprecated:* Use Java.pkg.pkg.ClassName to import a Java class.
    def import(class_name)
      Buildr.application.deprecated 'Use Java.pkg.pkg.ClassName to import a Java class.'
      ::Java.instance_eval(class_name)
    end
  end


  class << self

    # *Deprecated*: Use Java::Commands.java instead.
    def java(*args, &block)
      return send(:method_missing, :java) if args.empty?
      Buildr.application.deprecated 'Use Java::Commands.java instead.'
      Commands.java(*args, &block)
    end

    # *Deprecated*: Use Java::Commands.apt instead.
    def apt(*args)
      Buildr.application.deprecated 'Use Java::Commands.apt instead.'
      Commands.apt(*args)
    end

    # *Deprecated*: Use Java::Commands.javac instead.
    def javac(*args)
      Buildr.application.deprecated 'Use Java::Commands.javac instead.'
      Commands.javac(*args)
    end

    # *Deprecated*: Use Java::Commands.javadoc instead.
    def javadoc(*args)
      Buildr.application.deprecated 'Use Java::Commands.javadoc instead.'
      Commands.javadoc(*args)
    end

    # *Deprecated:* Use ENV_JAVA['java.version'] instead.
    def version
      Buildr.application.deprecated 'Use ENV_JAVA[\'java.version\'] instead.'
      Java.load
      ENV_JAVA['java.version']
    end

    # *Deprecated:* Use ENV['JAVA_HOME'] instead
    def home
      Buildr.application.deprecated 'Use ENV[\'JAVA_HOME\'] instead.'
      ENV['JAVA_HOME']
    end

    # *Deprecated:* In earlier versions, Java.wrapper served as a wrapper around RJB/JRuby.
    # From this version forward, we apply with JRuby style for importing Java classes:
    #   Java.java.lang.String.new('hai!')
    # You still need to call Java.load before using any Java code: it resolves, downloads
    # and installs various dependencies that are required on the classpath before calling
    # any Java code (e.g. Ant and its tasks).
    def wrapper
      Buildr.application.deprecated 'See documentation for new way to access Java code.'
      if block_given?
        Java.load
        yield JavaWrapper.instance
      else
        JavaWrapper.instance
      end
    end

    alias :rjb :wrapper

  end


  class Options

    # *Deprecated:* Use ENV['JAVA_OPTS'] instead.
    def java_args
      Buildr.application.deprecated "Use ENV['JAVA_OPTS'] instead"
      (ENV["JAVA_OPTS"] || ENV["JAVA_OPTIONS"]).to_s.split
    end

    # *Deprecated:* Use ENV['JAVA_OPTS'] instead.
    def java_args=(args)
      Buildr.application.deprecated "Use ENV['JAVA_OPTS'] instead"
      ENV['JAVA_OPTS'] = Array(args).join(' ')
    end

  end

end