# TODO make nice require after ruby-maven uses the same ruby files
require File.join(File.dirname(File.dirname(__FILE__)), 'model', 'model.rb')
require File.join(File.dirname(__FILE__), 'gemfile_lock.rb')
require File.join(File.dirname(__FILE__), 'versions.rb')
require File.join(File.dirname(__FILE__), 'jarfile.rb')

module Maven
  module Tools

    class ArtifactPassthrough

      def initialize(&block)
        @block = block
      end

      def add_artifact(a)
        @block.call(a)
      end
      
      def add_repository(name, url)
      end
    end
    
    class GemProject < Maven::Model::Project
      tags :dummy

      def initialize(artifact_id = dir_name, version = "0.0.0", &block)
        super("rubygems", artifact_id, version, &block)
        packaging "gem"
      end

      def add_param(config, name, list, default = [])
        if list.is_a? Array
          config[name] = list.join(",").to_s unless (list || []) == default
        else
          # list == nil => (list || []) == default is true
          config[name] = list.to_s unless (list || []) == default
        end
      end
      private :add_param

      def load_gemspec(specfile)
        require 'rubygems'
        if specfile.is_a? ::Gem::Specification 
          spec = specfile
        else
          spec = ::Gem::Specification.load(specfile)
          @gemspec = specfile
        end
        raise "file not found '#{specfile}'" unless spec
        @current_file = specfile
        artifact_id spec.name
        version spec.version
        name spec.summary || "#{self.artifact_id} - gem"
        description spec.description if spec.description
        url spec.homepage if spec.homepage
        (spec.email || []).zip(spec.authors || []).map do |email, author|
          self.developers.new(author, email)
        end

        #  TODO work with collection of licenses - there can be more than one !!!
        (spec.licenses + spec.files.select {|file| file.to_s =~ /license|gpl/i }).each do |license|
          # TODO make this better, i.e. detect the right license name from the file itself
          self.licenses.new(license)
        end

        config = {}
         if @gemspec
           relative = File.expand_path(@gemspec).sub(/#{File.expand_path('.')}/, '').sub(/^\//, '')
           add_param(config, "gemspec", relative)
         end
        add_param(config, "autorequire", spec.autorequire)
        add_param(config, "defaultExecutable", spec.default_executable)
        add_param(config, "testFiles", spec.test_files)
        #has_rdoc always gives true => makes not sense to keep it then
        #add_param(config, "hasRdoc", spec.has_rdoc)
        add_param(config, "extraRdocFiles", spec.extra_rdoc_files)
        add_param(config, "rdocOptions", spec.rdoc_options)
        add_param(config, "requirePaths", spec.require_paths, ["lib"])
        add_param(config, "rubyforgeProject", spec.rubyforge_project)
        add_param(config, "requiredRubygemsVersion", 
                  spec.required_rubygems_version && spec.required_rubygems_version != ">= 0" ? "<![CDATA[#{spec.required_rubygems_version}]]>" : nil)
        add_param(config, "bindir", spec.bindir, "bin")
        add_param(config, "requiredRubyVersion", 
                  spec.required_ruby_version && spec.required_ruby_version != ">= 0" ? "<![CDATA[#{spec.required_ruby_version}]]>" : nil)
        add_param(config, "postInstallMessage", 
                  spec.post_install_message ? "<![CDATA[#{spec.post_install_message}]]>" : nil)
        add_param(config, "executables", spec.executables)
        add_param(config, "extensions", spec.extensions)
        add_param(config, "platform", spec.platform, 'ruby')

        # # TODO maybe calculate extra files
        # files = spec.files.dup
        # (Dir['lib/**/*'] + Dir['spec/**/*'] + Dir['features/**/*'] + Dir['test/**/*'] + spec.licenses + spec.extra_rdoc_files).each do |f|
        #   files.delete(f)
        #   if f =~ /^.\//
        #     files.delete(f.sub(/^.\//, ''))
        #   else
        #     files.delete("./#{f}")
        #   end
        # end
        #add_param(config, "extraFiles", files)
        add_param(config, "files", spec.files)
        
        plugin('gem').with(config) if config.size > 0

        spec.dependencies.each do |dep|
          scope = 
            case dep.type
            when :runtime
              "compile"
            when :development
              "test"
            else
              warn "unknown scope: #{dep.type}"
              "compile"
            end

          versions = dep.requirement.requirements.collect do |req|
            # use this construct to get the same result in 1.8.x and 1.9.x
            req.collect{ |i| i.to_s }.join
          end
          gem(dep.name, versions).scope = scope
        end

        spec.requirements.each do |req|
          begin
            eval req
          rescue => e
            # TODO requirements is a list !!!
            add_param(config, "requirements", req)
            warn e
          rescue SyntaxError => e
            # TODO requirements is a list !!!
            add_param(config, "requirements", req)
          end
        end
      end

      def load_mavenfile(file)
        file = file.path if file.is_a?(File)
        if File.exists? file
          @current_file = file
          content = File.read(file)
          eval content
        else
          self
        end
      end

      def load_gemfile(file)
        file = file.path if file.is_a?(File)
        if File.exists? file
          @current_file = file
          content = File.read(file)
          #loaded_files << file
          if @lock.nil?
            @lock = GemfileLock.new(file + ".lock")
            if @lock.size == 0
              @lock = nil
            else
             # loaded_files << file + ".lock"
              # just make sure bundler is there and has a version
              @lock.hull.each do |dep|
                dependency_management.gem dep
              end
            end
          end
          eval content

          # we have a Gemfile so we add the bundler plugin
          plugin(:bundler)
        else
          self
        end
      end
      
      def load_jarfile(file)
        jars = Jarfile.new(file)
        if jars.exists?
          container = ArtifactPassthrough.new do |a|
            artifactId, groupId, extension, version = a.split(/:/)
            send(extension.to_sym, "#{artifactId}:#{groupId}", version)
          end
          if !jars.exists_lock? || jars.mtime > jars.mtime_lock
            jars.populate_unlocked container
          end
          jars.populate_locked container
        end
      end

      def dir_name
        File.basename(File.expand_path("."))
      end
      private :dir_name

      def add_defaults(args = {})
        versions = VERSIONS
        versions = versions.merge(args) if args

        name "#{dir_name} - gem" unless name
        
        packaging "gem" unless packaging

        repository("rubygems-releases").url = "http://rubygems-proxy.torquebox.org/releases" unless repository("rubygems-releases").url
        
        unless repository("rubygems-prereleases").url
          repository("rubygems-prereleases") do |r|
            r.url = "http://rubygems-proxy.torquebox.org/prereleases"
            r.releases(:enabled => false)
            r.snapshots(:enabled => true)
          end
        end 

        # TODO go through all plugins to find out any SNAPSHOT version !!
        if versions[:jruby_plugins] =~ /-SNAPSHOT$/ || properties['jruby.plugins.version'] =~ /-SNAPSHOT$/
          plugin_repository("sonatype-snapshots") do |nexus|
            nexus.url = "http://oss.sonatype.org/content/repositories/snapshots"
            nexus.releases(:enabled => false)
            nexus.snapshots(:enabled => true)
          end
        end

        if packaging =~ /gem/ || plugin?(:gem)
          gem = plugin(:gem)
          gem.version = "${jruby.plugins.version}" unless gem.version
          if packaging =~ /gem/
            gem.extensions = true
            if @gemspec && !(self.gem?('jruby-openssl') || self.gem?('jruby-openssl-maven'))
              gem.gem('jruby-openssl-maven')
            end
          end
          if File.exists?('lib') && File.exists?(File.join('src', 'main', 'java'))
            plugin(:jar) do |j|
              j.version = versions[:jar_plugin] unless j.version
              j.in_phase('prepare-package').execute_goal(:jar).with :outputDirectory => '${project.basedir}/lib', :finalName => '${project.artifactId}'
            end
          end
        end
        
        if @bundler_deps && @bundler_deps.size > 0
          plugin(:bundler)
          bdeps = []
          # first get the locked gems
          @bundler_deps.each do |args, dep|
            if @lock
              # add its dependencies as well to have the version
              # determine by the dependencyManagement
              @lock.dependency_hull(dep.artifact_id).map.each do |d|
                bdeps << d unless has_gem? d[0]
              end
            end
          end
          # any unlocked gems now
          @bundler_deps.each do |args, dep|
            bdeps << args unless has_gem? args[0]
          end
          
          # now add the deps to bundler plugin
          # avoid to setup bundler if it has no deps
          if bdeps.size > 0 
            plugin(:bundler) do |bundler|
              # install will be triggered on initialize phase
              bundler.executions.goals << "install"
              bdeps.each do |d|
                bundler.gem(d)
              end
            end
          end
        end

        if plugin?(:bundler)
          bundler = plugin(:bundler)
          bundler.version = "${jruby.plugins.version}" unless bundler.version
          unless gem?(:bundler)
            gem("bundler")
          end
        end

        if gem?('bundler') && !gem('bundler').version?
          gem('bundler').version = nil
          dependency_management.gem 'bundler', versions[:bundler_version]
        end

        if versions[:jruby_plugins]
          #add_test_plugin(nil, "test")
          add_test_plugin("rspec", "spec")
          add_test_plugin("cucumber", "features")
          add_test_plugin("minitest", "test")
          add_test_plugin("minitest", "spec", 'spec')
        end

        self.properties = {
          "project.build.sourceEncoding" => "UTF-8", 
          "gem.home" => "${project.build.directory}/rubygems", 
          "gem.path" => "${project.build.directory}/rubygems",
          "jruby.plugins.version" => versions[:jruby_plugins]
        }.merge(self.properties)

        has_plugin_gems = build.plugins.detect do |k, pl|
          pl.dependencies.detect { |d| d.type.to_sym == :gem } if pl.dependencies
        end
        
        if has_plugin_gems
          plugin_repository("rubygems-releases").url = "http://rubygems-proxy.torquebox.org/releases" unless plugin_repository("rubygems-releases").url
        
          unless plugin_repository("rubygems-prereleases").url
            plugin_repository("rubygems-prereleases") do |r|
              r.url = "http://rubygems-proxy.torquebox.org/prereleases"
              r.releases(:enabled => false)
              r.snapshots(:enabled => true)
            end
          end
        end
        # TODO
        configs = {
          :gem => [:initialize], 
          :rails3 => [:initialize, :pom], 
          :bundler => [:install]
        }.collect do |name, goals|
          if plugin?(name)
            {
              :pluginExecutionFilter => {
                :groupId => 'de.saumya.mojo',
                :artifactId => "#{name}-maven-plugin",
                :versionRange => '[0,)',
                :goals => goals
              },
              :action => { :ignore => nil }
            }
          end
        end
        configs.delete_if { |c| c.nil? }
        if configs.size > 0
          build.plugin_management do |pm|
            options = { 
              :lifecycleMappingMetadata => { 
                :pluginExecutions => Maven::Model::NamedArray.new(:pluginExecution) do |e|
                  configs.each { |c| e << c }
                end
              }
            }
            pm.plugins.get('org.eclipse.m2e:lifecycle-mapping', '1.0.0').configuration(options)
          end
        end

        profile('executable') do |exe|
          exe.jar('de.saumya.mojo:gem-assembly-descriptors', '${jruby.plugins.version}').scope :runtime
          exe.plugin(:assembly, '2.2-beta-5') do |a|
            options = {
              :descriptorRefs => ['jar-with-dependencies-and-gems'],
              :archive => {:manifest => { :mainClass => 'de.saumya.mojo.assembly.Main' } }
            }
            a.configuration(options)
            a.in_phase(:package).execute_goal(:assembly)
            a.jar 'de.saumya.mojo:gem-assembly-descriptors', '${jruby.plugins.version}'
          end
        end
      end
      
      def has_gem?(gem)
        self.gem?(gem)
      end

      def add_test_plugin(name, test_dir, goal = 'test')
        unless plugin?(name)
          has_gem = name.nil? ? true : gem?(name)
          if has_gem && File.exists?(test_dir)
            plugin(name || 'runit', "${jruby.plugins.version}").execution.goals << goal
          end
        else
          pl = plugin(name || 'runit')
          pl.version = "${jruby.plugins.version}" unless pl.version
        end
      end
      private :add_test_plugin

      def stack
        @stack ||= [[:default]]
      end
      private :stack
        
      def group(*args, &block)
        stack << args
        block.call if block
        stack.pop
      end

      def gemspec(name = nil)
        if name
          load_gemspec(File.join(File.dirname(@current_file), name))
        else
          Dir[File.join(File.dirname(@current_file), "*.gemspec")].each do |file|
            load_gemspec(file)
          end
        end
      end

      def source(*args)
        warn "ignore source #{args}" if !(args[0].to_s =~ /^https?:\/\/rubygems.org/) && args[0] != :rubygems
      end

      def path(*args)
      end

      def git(*args)
      end

      def is_jruby_platform(*args)
        args.detect { |a| :jruby == a.to_sym }
      end
      private :is_jruby_platform

      def platforms(*args, &block)
        if is_jruby_platform(*args)
          block.call
        end
      end

      def gem(*args, &block)
        dep = nil
        if args.last.is_a?(Hash)
          options = args.delete(args.last)
          unless options.key?(:git) || options.key?(:path)
            if options[:platforms].nil? || is_jruby_platform(*(options[:platforms] || []))
              group = options[:group] || options[:groups]
              if group
                [group].flatten.each do |g|
                  if dep
                    profile(g).dependencies << dep
                  else
                    dep = profile(g).gem(args, &block)
                  end
                end
              else
                self.gem(args, &block)
              end
            end
          end
        else
          stack.last.each do |c|
            if c == :default
              if @lock.nil? || args[0]== 'bundler'
                dep = add_gem(args, &block)
              else
                dep = add_gem(args[0], &block)

                # add its dependencies as well to have the version
                # determine by the dependencyManagement
                @lock.dependency_hull(args[0]).map.each do |d|
                  add_gem d[0], nil
                end
              end
            else
              if @lock.nil?
                if dep
                  profile(c).dependencies << dep
                else
                  dep = profile(c).gem(args, &block)
                end
              else
                if dep
                  profile(c).dependencies << dep
                else
                  dep = profile(c).gem(args[0], nil, &block)
                end
                # add its dependencies as well to have the version
                # determine by the dependencyManagement
                @lock.dependency_hull(args[0]).map.each do |d|
                  profile(c).gem d[0], nil unless gem? d[0]
                end
              end
            end
          end
        end
        if dep
          # first collect the missing deps it any
          @bundler_deps ||= []
          # use a dep with version so just create it from the args
          @bundler_deps << [args, dep]
        end
        dep
      end
    end
  end
end

if $0 == __FILE__
  proj = Maven::Tools::GemProject.new("test_gem")
  if ARGV[0] =~ /\.gemspec$/
    proj.load_gemspec(ARGV[0])
  else
    proj.load(ARGV[0] || 'Gemfile')
  end
  proj.load(ARGV[1] || 'Mavenfile')
  proj.add_defaults
  puts proj.to_xml
end