module Buildr

  module OpenJPA

    VERSION = "0.9.7-incubating-SNAPSHOT"

    REQUIRES = [ "org.apache.openjpa:openjpa-all:jar:#{VERSION}",
      "commons-collections:commons-collections:jar:3.1",
      "commons-dbcp:commons-dbcp:jar:1.2.1", 
      "commons-lang:commons-lang:jar:2.1",
      "commons-pool:commons-pool:jar:1.2",
      "javax.persistence:persistence-api:jar:1.0",
      "org.apache.geronimo.specs:geronimo-j2ee-connector_1.5_spec:jar:1.0",
      "org.apache.geronimo.specs:geronimo-jta_1.0.1B_spec:jar:1.0",
      "net.sourceforge.serp:serp:jar:1.11.0" ]

    OPTIONS = [ :verbose, :noop, :cp, :classpath, :properties ]

    def self.enhance(options)
      options[:verbose] ||= Rake.application.options.trace || false
      fu_check_options options, *OPTIONS + [:output]

      runtool options.merge(:class=>"org.apache.openjpa.enhance.PCEnhancer", :name=>"Enhancer",
        :args=>{ "-p"=>options[:properties], "-d"=>options[:output] },
        :classpath=>options[:classpath] + [options[:output]])
    end

    def self.mapping_tool(options)
      options[:verbose] ||= Rake.application.options.trace || false
      fu_check_options options, *OPTIONS + [:action, :sql]

      runtool options.merge(:class=>"org.apache.openjpa.jdbc.meta.MappingTool", :name=>"Mapping Tool",
        :args=>{ "-p"=>options[:properties], "-sql"=>options[:sql], "-sa"=>options[:action] })
    end

  protected

    def self.runtool(options)
      classpath = REQUIRES + (options[:classpath] || []).collect | (options[:cp] || []).collect
      classpath = artifacts(classpath).each { |t| t.invoke if t.respond_to?(:invoke) }.map(&:to_s)
      cmd_args = ["-cp", classpath.join(File::PATH_SEPARATOR)]
      cmd_args << options[:class]
      cmd_args += options[:args].select { |n, v| v }.map { |n, v| [ n, v ] }.flatten
      cmd_args << { :verbose=>options[:verbose] }
      unless options[:noop]
        verbose { puts "Running OpenJPA #{options[:name]}" }
        sh(Java.path_to_bin("java"), *cmd_args) { |ok, res| fail "Failed to execute OpenJPA #{options[:name]}, see errors above" unless ok }
      end
    end

  end

end