// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/renderer_host/pepper/browser_ppapi_host_test.h"
#include "content/browser/renderer_host/pepper/pepper_print_settings_manager.h"
#include "content/browser/renderer_host/pepper/pepper_printing_host.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/host/host_message_context.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/proxy/resource_message_test_sink.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace content {

namespace {

// Mock implementation of |PepperPrintSettingsManager| for test purposes.
class MockPepperPrintSettingsManager
    : public PepperPrintSettingsManager {
 public:
  MockPepperPrintSettingsManager(const PP_PrintSettings_Dev& settings);
  virtual ~MockPepperPrintSettingsManager() {}

  // PepperPrintSettingsManager implementation.
  virtual void GetDefaultPrintSettings(
      PepperPrintSettingsManager::Callback callback) OVERRIDE;
 private:
  PP_PrintSettings_Dev settings_;

  DISALLOW_COPY_AND_ASSIGN(MockPepperPrintSettingsManager);
};

MockPepperPrintSettingsManager::MockPepperPrintSettingsManager(
    const PP_PrintSettings_Dev& settings)
    : settings_(settings) {
}

void MockPepperPrintSettingsManager::GetDefaultPrintSettings(
    PepperPrintSettingsManager::Callback callback) {
  callback.Run(PepperPrintSettingsManager::Result(settings_, PP_OK));
}

class PepperPrintingHostTest
    : public testing::Test,
      public BrowserPpapiHostTest {
 public:
  PepperPrintingHostTest() {
  }

  virtual ~PepperPrintingHostTest() {
  }

  DISALLOW_COPY_AND_ASSIGN(PepperPrintingHostTest);
};

bool PP_SizeEqual(const PP_Size& lhs, const PP_Size& rhs) {
  return lhs.width == rhs.width && lhs.height == rhs.height;
}

bool PP_RectEqual(const PP_Rect& lhs, const PP_Rect& rhs) {
  return lhs.point.x == rhs.point.x &&
      lhs.point.y == rhs.point.y &&
      PP_SizeEqual(lhs.size, rhs.size);
}

}  // namespace

TEST_F(PepperPrintingHostTest, GetDefaultPrintSettings) {
  PP_Instance pp_instance = 12345;
  PP_Resource pp_resource = 67890;
  PP_PrintSettings_Dev expected_settings = {
    { { 0, 0 }, { 500, 515 } },
    { { 25, 35 }, { 300, 720 } },
    { 600, 700 },
    200,
    PP_PRINTORIENTATION_NORMAL,
    PP_PRINTSCALINGOPTION_NONE,
    PP_FALSE,
    PP_PRINTOUTPUTFORMAT_PDF
  };

  // Construct the resource host.
  scoped_ptr<PepperPrintSettingsManager> manager(
      new MockPepperPrintSettingsManager(expected_settings));
  PepperPrintingHost printing(GetBrowserPpapiHost()->GetPpapiHost(),
      pp_instance, pp_resource, manager.Pass());

  // Simulate a message being received.
  ppapi::proxy::ResourceMessageCallParams call_params(pp_resource, 1);
  ppapi::host::HostMessageContext context(call_params);
  int32 result = printing.OnResourceMessageReceived(
      PpapiHostMsg_Printing_GetDefaultPrintSettings(), &context);
  EXPECT_EQ(PP_OK_COMPLETIONPENDING, result);

  // This should have sent the Pepper reply to our test sink.
  ppapi::proxy::ResourceMessageReplyParams reply_params;
  IPC::Message reply_msg;
  ASSERT_TRUE(sink().GetFirstResourceReplyMatching(
      PpapiPluginMsg_Printing_GetDefaultPrintSettingsReply::ID, &reply_params,
      &reply_msg));

  // Validation of reply.
  EXPECT_EQ(call_params.sequence(), reply_params.sequence());
  EXPECT_EQ(PP_OK, reply_params.result());
  PpapiPluginMsg_Printing_GetDefaultPrintSettingsReply::Schema::Param
      reply_msg_param;
  ASSERT_TRUE(PpapiPluginMsg_Printing_GetDefaultPrintSettingsReply::Read(
      &reply_msg, &reply_msg_param));
  PP_PrintSettings_Dev actual_settings = reply_msg_param.a;

  EXPECT_TRUE(PP_RectEqual(expected_settings.printable_area,
                           actual_settings.printable_area));
  EXPECT_TRUE(PP_RectEqual(expected_settings.content_area,
                           actual_settings.content_area));
  EXPECT_TRUE(PP_SizeEqual(expected_settings.paper_size,
                           actual_settings.paper_size));
  EXPECT_EQ(expected_settings.dpi, actual_settings.dpi);
  EXPECT_EQ(expected_settings.orientation, actual_settings.orientation);
  EXPECT_EQ(expected_settings.print_scaling_option,
            actual_settings.print_scaling_option);
  EXPECT_EQ(expected_settings.grayscale, actual_settings.grayscale);
  EXPECT_EQ(expected_settings.format, actual_settings.format);
}

}  // namespace content