require File.expand_path('../../spec_helper', __FILE__)

module Pod
  describe Resolver do
    describe 'In general' do
      before do
        @podfile = Podfile.new do
          platform :ios
          pod 'BlocksKit', '1.5.2'
        end
        locked_deps = [Dependency.new('BlocksKit', '1.5.2')]
        @resolver = Resolver.new(config.sandbox, @podfile, locked_deps, SourcesManager.all)
      end

      it 'returns the sandbox' do
        @resolver.sandbox.should == config.sandbox
      end

      it 'returns the podfile' do
        @resolver.podfile.should == @podfile
      end

      it 'returns the locked dependencies' do
        @resolver.locked_dependencies.should == [Dependency.new('BlocksKit', '1.5.2')]
      end

      #--------------------------------------#

      it 'resolves the specification of the podfile' do
        target_definition = @podfile.target_definitions['Pods']
        specs = @resolver.resolve[target_definition]
        specs.map(&:to_s).should == [
          'A2DynamicDelegate (2.0.2)',
          'BlocksKit (1.5.2)',
          'libffi (3.0.13)',
        ]
      end

      it 'returns the resolved specifications grouped by target definition' do
        @resolver.resolve
        target_definition = @podfile.target_definitions['Pods']
        specs = @resolver.specs_by_target[target_definition]
        specs.map(&:to_s).should == [
          'A2DynamicDelegate (2.0.2)',
          'BlocksKit (1.5.2)',
          'libffi (3.0.13)',
        ]
      end

      it 'it resolves specifications from external sources' do
        podspec = fixture('integration/Reachability/Reachability.podspec')
        spec = Specification.from_file(podspec)
        config.sandbox.expects(:specification).with('Reachability').returns(spec)
        podfile = Podfile.new do
          platform :ios
          pod 'Reachability', :podspec => podspec
        end
        resolver = Resolver.new(config.sandbox, podfile, [], SourcesManager.all)
        resolver.resolve
        specs = resolver.specs_by_target.values.flatten
        specs.map(&:to_s).should == ['Reachability (3.0.0)']
      end
    end

    #-------------------------------------------------------------------------#

    describe 'Resolution' do
      before do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'BlocksKit', '1.5.2'
        end
        @resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
      end

      it 'cross resolves dependencies' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking',    '<  0.9.2' # 0.9.1 exits
          pod 'AFQuickLookView', '=  0.1.0' # requires  'AFNetworking', '>= 0.9.0'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should == ['AFNetworking (0.9.1)', 'AFQuickLookView (0.1.0)']
      end

      it 'holds the context state, such as cached specification sets' do
        @resolver.resolve
        cached_sets = @resolver.send(:cached_sets)
        cached_sets.values.sort_by(&:name).should == [
          SourcesManager.search_by_name('A2DynamicDelegate').first,
          SourcesManager.search_by_name('BlocksKit').first,
          SourcesManager.search_by_name('libffi').first,
        ].sort_by(&:name)
      end

      it 'raises once any of the dependencies does not match the platform of its podfile target' do
        Specification.any_instance.stubs(:available_platforms).returns([Platform.new(:ios, '999')])
        e = lambda { @resolver.resolve }.should.raise Informative
        e.message.should.match(/platform .* not compatible/)
      end

      it 'raises if unable to find a specification' do
        Specification.any_instance.stubs(:all_dependencies).returns([Dependency.new('Windows')])
        message = should.raise Informative do
          @resolver.resolve
        end.message
        message.should.match /Unable to find a specification/
        message.should.match /`Windows` depended upon by BlocksKit/
      end

      it 'does not raise if all dependencies are supported by the platform of the target definition' do
        lambda { @resolver.resolve }.should.not.raise
      end

      it 'includes all the subspecs of a specification node' do
        @podfile = Podfile.new do
          platform :ios, '7.0'
          pod 'RestKit', '0.10.3'
        end
        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        resolver.resolve.values.flatten.map(&:name).sort.should == %w(
          FileMD5Hash
          ISO8601DateFormatter
          JSONKit
          LibComponentLogging-Core
          LibComponentLogging-NSLog
          NSData+Base64
          RestKit
          RestKit/JSON
          RestKit/Network
          RestKit/ObjectMapping
          RestKit/ObjectMapping/Core
          RestKit/ObjectMapping/CoreData
          RestKit/ObjectMapping/JSON
          RestKit/ObjectMapping/XML
          RestKit/UI
          SOCKit
          XMLReader
          cocoa-oauth
        )
      end

      it 'handles correctly subspecs from external sources' do
        @podfile = Podfile.new do
          platform :ios
          pod 'MainSpec/FirstSubSpec', :git => 'GIT-URL'
        end
        spec = Spec.new do |s|
          s.name         = 'MainSpec'
          s.version      = '1.2.3'
          s.platform     = :ios

          s.subspec 'FirstSubSpec' do |fss|
            fss.source_files = 'some/file'
            fss.subspec 'SecondSubSpec'
          end
        end
        config.sandbox.expects(:specification).with('MainSpec').returns(spec)
        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:name).sort
        specs.should == %w(
          MainSpec/FirstSubSpec MainSpec/FirstSubSpec/SecondSubSpec
        )
      end

      it "marks a specification's version to be a HEAD version" do
        podfile = Podfile.new do
          platform :ios
          pod 'FileMD5Hash'
          pod 'JSONKit', :head
        end
        resolver = Resolver.new(config.sandbox, podfile, [], SourcesManager.all)
        filemd5hash, jsonkit = resolver.resolve.values.first.sort_by(&:name)
        filemd5hash.version.should.not.be.head
        jsonkit.version.should.be.head
        config.sandbox.head_pod?('FileMD5Hash').should.be.false
        config.sandbox.head_pod?('JSONKit').should.be.true
      end

      it 'raises if it finds two conflicting dependencies' do
        podfile = Podfile.new do
          platform :ios
          pod 'JSONKit', '1.4'
          pod 'JSONKit', '1.5pre'
        end
        resolver = Resolver.new(config.sandbox, podfile, [], SourcesManager.all)
        e = lambda { resolver.resolve }.should.raise Pod::Informative
        e.message.should.match(/Unable to satisfy the following requirements/)
      end

      it 'takes into account locked dependencies' do
        podfile = Podfile.new do
          platform :ios
          pod 'JSONKit', '<= 1.5pre'
        end
        resolver = Resolver.new(config.sandbox, podfile, [], SourcesManager.all)
        version = resolver.resolve.values.flatten.first.version
        version.to_s.should == '1.5pre'

        locked_deps = [Dependency.new('JSONKit', '= 1.4')]
        resolver = Resolver.new(config.sandbox, podfile, locked_deps, SourcesManager.all)
        version = resolver.resolve.values.flatten.first.version
        version.to_s.should == '1.4'
      end

      it 'takes into account the order of the sources' do
        podfile = Podfile.new do
          platform :ios
          pod 'JSONKit'
        end
        sources = SourcesManager.sources(['master', 'test_repo'])
        resolver = Resolver.new(config.sandbox, podfile, [], sources)
        version = resolver.resolve.values.flatten.first.version
        version.to_s.should.not == "999.999.999"

        sources = SourcesManager.sources(['test_repo', 'master'])
        resolver = Resolver.new(config.sandbox, podfile, [], sources)
        version = resolver.resolve.values.flatten.first.version
        version.to_s.should == "999.999.999"
      end
    end

    #-------------------------------------------------------------------------#

    describe 'Pre-release versions' do

      it 'resolves explicitly requested pre-release versions' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '1.0RC3'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should == ['AFNetworking (1.0RC3)']
      end

      xit 'resolves to latest minor version even when explicitly requesting pre-release versions when using ~>' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '~> 1.0RC3'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.2.0)']
      end

      it 'does not resolve to a pre-release version implicitly when matching exact version' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '1.0'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.0)']
      end

      xit 'does not resolve to a pre-release version implicitly when using <' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '< 1.0'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (0.10.1)']
      end

      it 'does not resolve to a pre-release version implicitly when using <=' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '<= 1.0'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.0)']
      end

      it 'does not resolve to a pre-release version implicitly when using >' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '> 1.0', '< 1.3'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.2.1)']
      end

      it 'does not resolve to a pre-release version implicitly when using >=' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '>= 1.0', '< 1.3'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.2.1)']
      end

      it 'does not resolve to a pre-release version implicitly when using ~>' do
        @podfile = Podfile.new do
          platform :ios, '6.0'
          pod 'AFNetworking', '~> 1.0', '< 1.3'
        end

        resolver = Resolver.new(config.sandbox, @podfile, [], SourcesManager.all)
        specs = resolver.resolve.values.flatten.map(&:to_s).sort
        specs.should != ['AFNetworking (1.0RC3)']
        specs.should == ['AFNetworking (1.2.1)']
      end
    end
  end
end
