// Copyright (c) 2018, The Monero Project
// 
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//    conditions and the following disclaimer.
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// 2. 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.
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//    used to endorse or promote products derived from this software without specific
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#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <boost/filesystem.hpp>

#include "gtest/gtest.h"

#include "string_tools.h"
#include "crypto/crypto.h"
#include "crypto/random.h"
#include "crypto/chacha.h"
#include "wallet/ringdb.h"

static crypto::chacha_key generate_chacha_key()
{
  uint8_t key[CHACHA_KEY_SIZE];
  crypto::rand(CHACHA_KEY_SIZE, key);
  crypto::chacha_key chacha_key;
  memcpy(&chacha_key, key, CHACHA_KEY_SIZE);
  return chacha_key;
}

static crypto::key_image generate_key_image()
{
  return crypto::rand<crypto::key_image>();
}

static crypto::public_key generate_output()
{
  return crypto::rand<crypto::public_key>();
}


static const crypto::chacha_key KEY_1 = generate_chacha_key();
static const crypto::chacha_key KEY_2 = generate_chacha_key();
static const crypto::key_image KEY_IMAGE_1 = generate_key_image();
static const crypto::public_key OUTPUT_1 = generate_output();
static const crypto::public_key OUTPUT_2 = generate_output();

class RingDB: public tools::ringdb
{
public:
  RingDB(const char *genesis = ""): tools::ringdb(make_filename(), genesis) { }
  ~RingDB() { close(); boost::filesystem::remove_all(filename); free(filename); }

private:
  std::string make_filename()
  {
    boost::filesystem::path path =
      boost::filesystem::temp_directory_path();
#if defined(__MINGW32__) || defined(__MINGW__)
    filename = tempnam(path.string().c_str(), "monero-ringdb-test-");
    EXPECT_TRUE(filename != NULL);
#else
    path /= "monero-ringdb-test-XXXXXX";
    filename = strdup(path.string().c_str());
    EXPECT_TRUE(mkdtemp(filename) != NULL);
#endif
    return filename;
  }

private:
  char *filename;
};

TEST(ringdb, not_found)
{
  RingDB ringdb;
  std::vector<uint64_t> outs;
  ASSERT_FALSE(ringdb.get_ring(KEY_1, KEY_IMAGE_1, outs));
}

TEST(ringdb, found)
{
  RingDB ringdb;
  std::vector<uint64_t> outs, outs2;
  outs.push_back(43); outs.push_back(7320); outs.push_back(8429);
  ASSERT_TRUE(ringdb.set_ring(KEY_1, KEY_IMAGE_1, outs, false));
  ASSERT_TRUE(ringdb.get_ring(KEY_1, KEY_IMAGE_1, outs2));
  ASSERT_EQ(outs, outs2);
}

TEST(ringdb, convert)
{
  RingDB ringdb;
  std::vector<uint64_t> outs, outs2;
  outs.push_back(43); outs.push_back(7320); outs.push_back(8429);
  ASSERT_TRUE(ringdb.set_ring(KEY_1, KEY_IMAGE_1, outs, true));
  ASSERT_TRUE(ringdb.get_ring(KEY_1, KEY_IMAGE_1, outs2));
  ASSERT_EQ(outs2.size(), 3);
  ASSERT_EQ(outs2[0], 43);
  ASSERT_EQ(outs2[1], 43+7320);
  ASSERT_EQ(outs2[2], 43+7320+8429);
}

TEST(ringdb, different_genesis)
{
  RingDB ringdb;
  std::vector<uint64_t> outs, outs2;
  outs.push_back(43); outs.push_back(7320); outs.push_back(8429);
  ASSERT_TRUE(ringdb.set_ring(KEY_1, KEY_IMAGE_1, outs, false));
  ASSERT_FALSE(ringdb.get_ring(KEY_2, KEY_IMAGE_1, outs2));
}

TEST(blackball, not_found)
{
  RingDB ringdb;
  ASSERT_TRUE(ringdb.blackball(OUTPUT_1));
  ASSERT_FALSE(ringdb.blackballed(OUTPUT_2));
}

TEST(blackball, found)
{
  RingDB ringdb;
  ASSERT_TRUE(ringdb.blackball(OUTPUT_1));
  ASSERT_TRUE(ringdb.blackballed(OUTPUT_1));
}

TEST(blackball, unblackball)
{
  RingDB ringdb;
  ASSERT_TRUE(ringdb.blackball(OUTPUT_1));
  ASSERT_TRUE(ringdb.unblackball(OUTPUT_1));
  ASSERT_FALSE(ringdb.blackballed(OUTPUT_1));
}

TEST(blackball, clear)
{
  RingDB ringdb;
  ASSERT_TRUE(ringdb.blackball(OUTPUT_1));
  ASSERT_TRUE(ringdb.clear_blackballs());
  ASSERT_FALSE(ringdb.blackballed(OUTPUT_1));
}