using System;
using System.Collections.Generic;
using System.Text;
using NUnit.Framework;
using Google.ProtocolBuffers.TestProtos;

namespace Google.ProtocolBuffers {
  [TestFixture]
  public class GeneratedMessageTest {
    ReflectionTester reflectionTester;
    ReflectionTester extensionsReflectionTester;
    
    [SetUp]
    public void SetUp() {
      reflectionTester = ReflectionTester.CreateTestAllTypesInstance();
      extensionsReflectionTester = ReflectionTester.CreateTestAllExtensionsInstance();
    }
    
    [Test]
    public void DefaultInstance() {
      Assert.AreSame(TestAllTypes.DefaultInstance, TestAllTypes.DefaultInstance.DefaultInstanceForType);
      Assert.AreSame(TestAllTypes.DefaultInstance, TestAllTypes.CreateBuilder().DefaultInstanceForType);
    }

    [Test]
    public void Accessors() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
      TestUtil.SetAllFields(builder);
      TestAllTypes message = builder.Build();
      TestUtil.AssertAllFieldsSet(message);
    }
    
    [Test]
    public void RepeatedSetters() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
      TestUtil.SetAllFields(builder);
      TestUtil.ModifyRepeatedFields(builder);
      TestAllTypes message = builder.Build();
      TestUtil.AssertRepeatedFieldsModified(message);
    }

    [Test]
    public void RepeatedAppend() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();

      builder.AddRangeRepeatedInt32(new int[]{1, 2, 3, 4});
      builder.AddRangeRepeatedForeignEnum((new ForeignEnum[] { ForeignEnum.FOREIGN_BAZ }));

      ForeignMessage foreignMessage = ForeignMessage.CreateBuilder().SetC(12).Build();
      builder.AddRangeRepeatedForeignMessage(new ForeignMessage[] {foreignMessage});

      TestAllTypes message = builder.Build();
      TestUtil.AssertEqual(message.RepeatedInt32List, new int[]{1, 2, 3, 4});
      TestUtil.AssertEqual(message.RepeatedForeignEnumList, new ForeignEnum[] {ForeignEnum.FOREIGN_BAZ});
      Assert.AreEqual(1, message.RepeatedForeignMessageCount);
      Assert.AreEqual(12, message.GetRepeatedForeignMessage(0).C);
    }

    [Test]
    public void SettingForeignMessageUsingBuilder() {
      TestAllTypes message = TestAllTypes.CreateBuilder()
          // Pass builder for foreign message instance.
          .SetOptionalForeignMessage(ForeignMessage.CreateBuilder().SetC(123))
          .Build();
      TestAllTypes expectedMessage = TestAllTypes.CreateBuilder()
          // Create expected version passing foreign message instance explicitly.
          .SetOptionalForeignMessage(ForeignMessage.CreateBuilder().SetC(123).Build())
          .Build();
      Assert.AreEqual(expectedMessage, message);
    }

    [Test]
    public void SettingRepeatedForeignMessageUsingBuilder() {
      TestAllTypes message = TestAllTypes.CreateBuilder()
          // Pass builder for foreign message instance.
          .AddRepeatedForeignMessage(ForeignMessage.CreateBuilder().SetC(456))
          .Build();
      TestAllTypes expectedMessage = TestAllTypes.CreateBuilder()
          // Create expected version passing foreign message instance explicitly.
          .AddRepeatedForeignMessage(ForeignMessage.CreateBuilder().SetC(456).Build())
          .Build();
      Assert.AreEqual(expectedMessage, message);
    }

    
    [Test]
    public void Defaults() {
      TestUtil.AssertClear(TestAllTypes.DefaultInstance);
      TestUtil.AssertClear(TestAllTypes.CreateBuilder().Build());

      Assert.AreEqual("\u1234", TestExtremeDefaultValues.DefaultInstance.Utf8String);
    }

    [Test]
    public void ReflectionGetters() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
      TestUtil.SetAllFields(builder);
      TestAllTypes message = builder.Build();
      reflectionTester.AssertAllFieldsSetViaReflection(message);
    }

    [Test]
    public void ReflectionSetters() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
      reflectionTester.SetAllFieldsViaReflection(builder);
      TestAllTypes message = builder.Build();
      TestUtil.AssertAllFieldsSet(message);
    }

    [Test]
    public void ReflectionRepeatedSetters() {
      TestAllTypes.Builder builder = TestAllTypes.CreateBuilder();
      reflectionTester.SetAllFieldsViaReflection(builder);
      reflectionTester.ModifyRepeatedFieldsViaReflection(builder);
      TestAllTypes message = builder.Build();
      TestUtil.AssertRepeatedFieldsModified(message);
    }

    [Test]
    public void ReflectionDefaults() {
      reflectionTester.AssertClearViaReflection(TestAllTypes.DefaultInstance);
      reflectionTester.AssertClearViaReflection(TestAllTypes.CreateBuilder().Build());
    }
    // =================================================================
    // Extensions.

    [Test]
    public void ExtensionAccessors() {
      TestAllExtensions.Builder builder = TestAllExtensions.CreateBuilder();
      TestUtil.SetAllExtensions(builder);
      TestAllExtensions message = builder.Build();
      TestUtil.AssertAllExtensionsSet(message);
    }

    [Test]
    public void ExtensionRepeatedSetters() {
      TestAllExtensions.Builder builder = TestAllExtensions.CreateBuilder();
      TestUtil.SetAllExtensions(builder);
      TestUtil.ModifyRepeatedExtensions(builder);
      TestAllExtensions message = builder.Build();
      TestUtil.AssertRepeatedExtensionsModified(message);
    }

    [Test]
    public void ExtensionDefaults() {
      TestUtil.AssertExtensionsClear(TestAllExtensions.DefaultInstance);
      TestUtil.AssertExtensionsClear(TestAllExtensions.CreateBuilder().Build());
    }

    [Test]
    public void ExtensionReflectionGetters() {
      TestAllExtensions.Builder builder = TestAllExtensions.CreateBuilder();
      TestUtil.SetAllExtensions(builder);
      TestAllExtensions message = builder.Build();
      extensionsReflectionTester.AssertAllFieldsSetViaReflection(message);
    }

    [Test]
    public void ExtensionReflectionSetters() {
      TestAllExtensions.Builder builder = TestAllExtensions.CreateBuilder();
      extensionsReflectionTester.SetAllFieldsViaReflection(builder);
      TestAllExtensions message = builder.Build();
      TestUtil.AssertAllExtensionsSet(message);
    }

    [Test]
    public void ExtensionReflectionRepeatedSetters() {
      TestAllExtensions.Builder builder = TestAllExtensions.CreateBuilder();
      extensionsReflectionTester.SetAllFieldsViaReflection(builder);
      extensionsReflectionTester.ModifyRepeatedFieldsViaReflection(builder);
      TestAllExtensions message = builder.Build();
      TestUtil.AssertRepeatedExtensionsModified(message);
    }

    [Test]
    public void ExtensionReflectionDefaults() {
      extensionsReflectionTester.AssertClearViaReflection(TestAllExtensions.DefaultInstance);
      extensionsReflectionTester.AssertClearViaReflection(TestAllExtensions.CreateBuilder().Build());
    }

    public void testClearExtension() {
      // clearExtension() is not actually used in TestUtil, so try it manually.
      Assert.IsFalse(TestAllExtensions.CreateBuilder()
          .SetExtension(UnitTestProtoFile.OptionalInt32Extension, 1)
          .ClearExtension(UnitTestProtoFile.OptionalInt32Extension)
          .HasExtension(UnitTestProtoFile.OptionalInt32Extension));
      Assert.AreEqual(0,
        TestAllExtensions.CreateBuilder()
          .AddExtension(UnitTestProtoFile.RepeatedInt32Extension, 1)
          .ClearExtension(UnitTestProtoFile.RepeatedInt32Extension)
          .GetExtensionCount(UnitTestProtoFile.RepeatedInt32Extension));
    }

    // =================================================================
    // multiple_files_test
    /* FIXME: Find this proto!
    public void MultipleFilesOption() {
      // We mostly just want to check that things compile.
      MessageWithNoOuter message = MessageWithNoOuter.CreateBuilder()
          .setNested(MessageWithNoOuter.NestedMessage.CreateBuilder().setI(1))
          .addForeign(TestAllTypes.CreateBuilder().setOptionalInt32(1))
          .setNestedEnum(MessageWithNoOuter.NestedEnum.BAZ)
          .setForeignEnum(EnumWithNoOuter.BAR)
          .Build();
      Assert.AreEqual(message, MessageWithNoOuter.parseFrom(message.toByteString()));

      Assert.AreEqual(MultipleFilesTestProto.getDescriptor(),
                   MessageWithNoOuter.getDescriptor().getFile());

      Descriptors.FieldDescriptor field =
        MessageWithNoOuter.getDescriptor().findFieldByName("foreign_enum");
      Assert.AreEqual(EnumWithNoOuter.BAR.getValueDescriptor(),
                   message.getField(field));

      Assert.AreEqual(MultipleFilesTestProto.getDescriptor(),
                   ServiceWithNoOuter.getDescriptor().getFile());

      assertFalse(
        TestAllExtensions.getDefaultInstance().hasExtension(
          MultipleFilesTestProto.extensionWithOuter));
    }
    */
  }
}