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#include "dictionary/suppression_dictionary.h"

#include <string>

#include "base/logging.h"
#include "base/singleton.h"
#include "base/thread.h"
#include "base/util.h"
#include "testing/base/public/googletest.h"
#include "testing/base/public/gunit.h"

namespace mozc {
namespace dictionary {
namespace {

TEST(SupressionDictionary, BasicTest) {
  SuppressionDictionary *dic = Singleton<SuppressionDictionary>::get();
  CHECK(dic);

  // repeat 10 times
  for (int i = 0; i < 10; ++i) {
    // Not locked
    EXPECT_FALSE(dic->AddEntry("test", "test"));

    dic->Lock();
    // IsEmpty() returns always true when dic is locked
    EXPECT_TRUE(dic->IsEmpty());
    EXPECT_FALSE(dic->AddEntry("", ""));
    EXPECT_TRUE(dic->AddEntry("key1", "value1"));
    EXPECT_TRUE(dic->AddEntry("key2", "value2"));
    EXPECT_TRUE(dic->AddEntry("key3", "value3"));
    EXPECT_TRUE(dic->AddEntry("key4", ""));
    EXPECT_TRUE(dic->AddEntry("key5", ""));
    EXPECT_TRUE(dic->AddEntry("", "value4"));
    EXPECT_TRUE(dic->AddEntry("", "value5"));
    EXPECT_TRUE(dic->IsEmpty());
    dic->UnLock();

    EXPECT_FALSE(dic->IsEmpty());

    // Not locked
    EXPECT_FALSE(dic->AddEntry("test", "test"));

    // locked now => SuppressEntry always returns false
    dic->Lock();
    EXPECT_FALSE(dic->SuppressEntry("key1", "value1"));
    dic->UnLock();

    EXPECT_TRUE(dic->SuppressEntry("key1", "value1"));
    EXPECT_TRUE(dic->SuppressEntry("key2", "value2"));
    EXPECT_TRUE(dic->SuppressEntry("key3", "value3"));
    EXPECT_TRUE(dic->SuppressEntry("key4", ""));
    EXPECT_TRUE(dic->SuppressEntry("key5", ""));
    EXPECT_TRUE(dic->SuppressEntry("", "value4"));
    EXPECT_TRUE(dic->SuppressEntry("", "value5"));
    EXPECT_FALSE(dic->SuppressEntry("key1", ""));
    EXPECT_FALSE(dic->SuppressEntry("key2", ""));
    EXPECT_FALSE(dic->SuppressEntry("key3", ""));
    EXPECT_FALSE(dic->SuppressEntry("", "value1"));
    EXPECT_FALSE(dic->SuppressEntry("", "value2"));
    EXPECT_FALSE(dic->SuppressEntry("", "value3"));
    EXPECT_FALSE(dic->SuppressEntry("key1", "value2"));
    EXPECT_TRUE(dic->SuppressEntry("key4", "value2"));
    EXPECT_TRUE(dic->SuppressEntry("key4", "value3"));
    EXPECT_TRUE(dic->SuppressEntry("key5", "value0"));
    EXPECT_TRUE(dic->SuppressEntry("key5", "value4"));
    EXPECT_TRUE(dic->SuppressEntry("key0", "value5"));
    EXPECT_FALSE(dic->SuppressEntry("", ""));

    dic->Lock();
    dic->Clear();
    dic->UnLock();
  }
}

class DictionaryLoaderThread : public Thread {
 public:
  virtual void Run() {
    SuppressionDictionary *dic = Singleton<SuppressionDictionary>::get();
    CHECK(dic);
    dic->Lock();
    dic->Clear();
    for (int i = 0; i < 100; ++i) {
      const string key = "key" + std::to_string(i);
      const string value = "value" + std::to_string(i);
      EXPECT_TRUE(dic->AddEntry(key, value));
      Util::Sleep(5);
    }
    dic->UnLock();
  }
};

TEST(SupressionDictionary, ThreadTest) {
  SuppressionDictionary *dic = Singleton<SuppressionDictionary>::get();
  CHECK(dic);

  dic->Lock();

  for (int iter = 0; iter < 3; ++iter)  {
    DictionaryLoaderThread thread;

    // Load dictionary in another thread.
    thread.Start("SuppressionDictionaryTest");

    for (int i = 0; i < 100; ++i) {
      const string key = "key" + std::to_string(i);
      const string value = "value" + std::to_string(i);
      if (!thread.IsRunning()) {
        EXPECT_TRUE(dic->SuppressEntry(key, value));
      }
    }

    thread.Join();
  }

  dic->UnLock();
}

}  // namespace
}  // namespace dictionary
}  // namespace mozc