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#include "dictionary/system/value_dictionary.h"

#include "base/base.h"
#include "base/stl_util.h"
#include "base/util.h"
#include "converter/node.h"
#include "converter/node_allocator.h"
#include "dictionary/dictionary_token.h"
#include "dictionary/system/system_dictionary_builder.h"
#include "testing/base/public/googletest.h"
#include "testing/base/public/gunit.h"

DECLARE_string(test_tmpdir);

namespace mozc {

class ValueDictionaryTest : public testing::Test {
 protected:
  ValueDictionaryTest() :
      dict_name_(FLAGS_test_tmpdir + "/value_dict_test.dic") {}

  virtual void SetUp() {
    STLDeleteElements(&tokens_);
    Util::SetUserProfileDirectory(FLAGS_test_tmpdir);
    Util::Unlink(dict_name_);
  }

  virtual void TearDown() {
    STLDeleteElements(&tokens_);
    Util::Unlink(dict_name_);
  }

  void AddToken(const string &key, const string &value) {
    Token *token = new Token;
    token->key = key;
    token->value = value;
    token->cost = 0;
    token->lid = 0;
    token->rid = 0;
    tokens_.push_back(token);
  }

  void BuildDictionary() {
    dictionary::SystemDictionaryBuilder builder;
    builder.BuildFromTokens(tokens_);
    builder.WriteToFile(dict_name_);
  }

  const string dict_name_;

 private:
  vector<Token *> tokens_;
};

TEST_F(ValueDictionaryTest, LookupPredictive) {
  NodeAllocator allocator;
  // "うぃー"
  AddToken("\xa4\xa6\xa4\xa3\xa1\xbc", "we");
  // "うぉー"
  AddToken("\xa4\xa6\xa4\xa9\xa1\xbc", "war");
  // "わーど"
  AddToken("\xa4\xef\xa1\xbc\xa4\xc9", "word");
  // "わーるど"
  AddToken("\xa4\xef\xa1\xbc\xa4\xeb\xa4\xc9", "world");
  BuildDictionary();

  scoped_ptr<ValueDictionary> dictionary(
      ValueDictionary::CreateValueDictionaryFromFile(dict_name_));
  const string lookup_key = "wo";
  Node *node = dictionary->LookupPredictive(lookup_key.c_str(),
                                            lookup_key.size(),
                                            &allocator);
  bool found = false;
  while (node) {
    if (node->value == "word") {
      found = true;
      break;
    }
    node = node->bnext;
  }
  EXPECT_TRUE(found);
}

}  // namespace mozc