// Copyright (c) 2010 The Chromium OS 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 <gflags/gflags.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctime>

#include "base/logging.h"
#include "base/string_util.h"
#include "base/string_split.h"

#include "glinterface.h"
#include "main.h"
#include "utils.h"

#include "all_tests.h"
#include "testbase.h"

using std::string;
using std::vector;

DEFINE_int32(duration, 0, "run tests in a loop for at least this many seconds");
DEFINE_string(tests, "", "colon-separated list of tests to run; "
              "all tests if omitted");

bool test_is_enabled(glbench::TestBase* test,
                     const vector<string>& enabled_tests) {
  if (enabled_tests.empty())
    return true;

  const char* test_name = test->Name();
  for (vector<string>::const_iterator i = enabled_tests.begin();
       i != enabled_tests.end(); ++i) {
    // This is not very precise, but will do until there's a need for something
    // more flexible.
    if (strstr(test_name, i->c_str()))
      return true;
  }

  return false;
}

void printDateTime(void) {
  struct tm *ttime;
  time_t tm = time(0);
  char time_string[64];
  ttime = localtime(&tm);
  strftime(time_string, 63, "%c",ttime);
  printf("# DateTime: %s\n", time_string);
}

bool PassesSanityCheck(void) {
  GLint viewport[2];
  glGetIntegerv(GL_MAX_VIEWPORT_DIMS, viewport);
  if (viewport[0] < g_width || viewport[1] < g_height) {
    printf("# Error: MAX_VIEWPORT_DIMS=(%d, %d) are too small.\n",
           viewport[0], viewport[1]);
    return false;
  }
  return true;
}

int main(int argc, char *argv[]) {
  SetBasePathFromArgv0(argv[0], "src");
  google::ParseCommandLineFlags(&argc, &argv, false);

  g_main_gl_interface.reset(GLInterface::Create());
  if (!g_main_gl_interface->Init()) {
    printf("# Error: Failed to initialize %s.\n", argv[0]);
    return 1;
  }

  printf("# board_id: %s - %s\n",
         glGetString(GL_VENDOR), glGetString(GL_RENDERER));
  g_main_gl_interface->Cleanup();

  if (argc == 1) {
    printf("# Usage: %s [-save [-outdir=<directory>]] to save images\n", argv[0]);
  } else {
    printf("# Running: ");
    for (int i = 0; i < argc; i++) printf("%s ", argv[i]);
    printf("\n");
  }
  printDateTime();
  if (!PassesSanityCheck())
    return 1;

  vector<string> enabled_tests;
  base::SplitString(FLAGS_tests, ':', &enabled_tests);
  glbench::TestBase* tests[] = {
    glbench::GetSwapTest(),
    glbench::GetContextTest(),
    glbench::GetClearTest(),
    glbench::GetFillRateTest(),
    glbench::GetWindowManagerCompositingTest(false),
    glbench::GetWindowManagerCompositingTest(true),
    glbench::GetTriangleSetupTest(),
    glbench::GetYuvToRgbTest(),
    glbench::GetReadPixelTest(),
    glbench::GetAttributeFetchShaderTest(),
    glbench::GetVaryingsAndDdxyShaderTest(),
    glbench::GetTextureReuseTest(),
    glbench::GetTextureUpdateTest(),
    glbench::GetTextureUploadTest(),
  };

  uint64_t done = GetUTime() + 1000000ULL * FLAGS_duration;
  do {
    for (unsigned int i = 0; i < arraysize(tests); i++) {
      if (!test_is_enabled(tests[i], enabled_tests))
        continue;
      if (!g_main_gl_interface->Init()) {
        printf("Initialize failed\n");
        return 1;
      }
      glbench::ClearBuffers();
      tests[i]->Run();
      g_main_gl_interface->Cleanup();
    }
  } while (GetUTime() < done);

  for (unsigned int i = 0; i < arraysize(tests); i++) {
    delete tests[i];
    tests[i] = NULL;
  }

  printDateTime();

  return 0;
}