// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Author: kenton@google.com (Kenton Varda)
//
// TODO(kenton):  Share code with the versions of this test in other languages?
//   It seemed like parameterizing it would add more complexity than it is
//   worth.

#include <google/protobuf/compiler/java/java_generator.h>
#include <google/protobuf/compiler/command_line_interface.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/io/printer.h>

#include <google/protobuf/testing/googletest.h>
#include <gtest/gtest.h>
#include <google/protobuf/testing/file.h>

namespace google {
namespace protobuf {
namespace compiler {
namespace java {
namespace {

class TestGenerator : public CodeGenerator {
 public:
  TestGenerator() {}
  ~TestGenerator() {}

  virtual bool Generate(const FileDescriptor* file,
                        const string& parameter,
                        OutputDirectory* output_directory,
                        string* error) const {
    TryInsert("Test.java", "outer_class_scope", output_directory);
    TryInsert("Test.java", "class_scope:foo.Bar", output_directory);
    TryInsert("Test.java", "class_scope:foo.Bar.Baz", output_directory);
    TryInsert("Test.java", "builder_scope:foo.Bar", output_directory);
    TryInsert("Test.java", "builder_scope:foo.Bar.Baz", output_directory);
    TryInsert("Test.java", "enum_scope:foo.Qux", output_directory);
    return true;
  }

  void TryInsert(const string& filename, const string& insertion_point,
                 OutputDirectory* output_directory) const {
    scoped_ptr<io::ZeroCopyOutputStream> output(
      output_directory->OpenForInsert(filename, insertion_point));
    io::Printer printer(output.get(), '$');
    printer.Print("// inserted $name$\n", "name", insertion_point);
  }
};

// This test verifies that all the expected insertion points exist.  It does
// not verify that they are correctly-placed; that would require actually
// compiling the output which is a bit more than I care to do for this test.
TEST(JavaPluginTest, PluginTest) {
  File::WriteStringToFileOrDie(
      "syntax = \"proto2\";\n"
      "package foo;\n"
      "option java_package = \"\";\n"
      "option java_outer_classname = \"Test\";\n"
      "message Bar {\n"
      "  message Baz {}\n"
      "}\n"
      "enum Qux { BLAH = 1; }\n",
      TestTempDir() + "/test.proto");

  google::protobuf::compiler::CommandLineInterface cli;
  cli.SetInputsAreProtoPathRelative(true);

  JavaGenerator java_generator;
  TestGenerator test_generator;
  cli.RegisterGenerator("--java_out", &java_generator, "");
  cli.RegisterGenerator("--test_out", &test_generator, "");

  string proto_path = "-I" + TestTempDir();
  string java_out = "--java_out=" + TestTempDir();
  string test_out = "--test_out=" + TestTempDir();

  const char* argv[] = {
    "protoc",
    proto_path.c_str(),
    java_out.c_str(),
    test_out.c_str(),
    "test.proto"
  };

  EXPECT_EQ(0, cli.Run(5, argv));
}

}  // namespace
}  // namespace java
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
