// Copyright (C) 2011-2012 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

#include <config.h>
#include <iostream>
#include <sstream>
#include <utility>
#include <gtest/gtest.h>

#include <asiolink/io_address.h>
#include <dhcp/lease_mgr_factory.h>
#include <dhcp/mysql_lease_mgr.h>

using namespace isc;
using namespace isc::asiolink;
using namespace isc::dhcp;
using namespace std;

namespace {
// empty class for now, but may be extended later.
class MySqlLeaseMgrTest : public ::testing::Test {
public:
    MySqlLeaseMgrTest() {
    }
};

// Connection strings
const char* VALID_TYPE = "type=mysql";
const char* INVALID_TYPE = "type=unknown";
const char* VALID_NAME = "name=keatest";
const char* INVALID_NAME = "name=invalidname";
const char* VALID_HOST = "host=localhost";
const char* INVALID_HOST = "host=invalidhost";
const char* VALID_USER = "user=keatest";
const char* INVALID_USER = "user=invaliduser";
const char* VALID_PASSWORD = "password=keatest";
const char* INVALID_PASSWORD = "password=invalid";

// Given a combination of strings above, produce a connection string.
string connectionString(const char* type, const char* name, const char* host,
                        const char* user, const char* password) {
    const string space = " ";
    return (string(type) + space + string(name) + space + string(host) + space +
            string(user) + space + string(password));
}

// Return valid connection string
string validConnectionString() {
    return (connectionString(VALID_TYPE, VALID_NAME, VALID_HOST,
                             VALID_USER, VALID_PASSWORD));
}


// This test checks if the MySqlLeaseMgr can be instantiated.  This happens
// only if:
// a) The database can be opened
// b) It finds the schema_version table
// c) The schema version matches that in the Lease Manager code
TEST_F(MySqlLeaseMgrTest, OpenDatabase) {
    LeaseMgrPtr lmptr;

    // Check that wrong specification of backend throws an exception.
    // (This is really a check on LeaseMgrFactory, but is convenient to
    // perform here.)
    EXPECT_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        INVALID_TYPE, VALID_NAME, VALID_HOST, VALID_USER, VALID_PASSWORD)),
        InvalidParameter);

    // Check that invalid login data causes an exception.
    EXPECT_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        VALID_TYPE, INVALID_NAME, VALID_HOST, VALID_USER, VALID_PASSWORD)),
        DbOpenError);
    EXPECT_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        VALID_TYPE, VALID_NAME, INVALID_HOST, VALID_USER, VALID_PASSWORD)),
        DbOpenError);
    EXPECT_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        VALID_TYPE, VALID_NAME, VALID_HOST, INVALID_USER, VALID_PASSWORD)),
        DbOpenError);
    EXPECT_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        VALID_TYPE, VALID_NAME, VALID_HOST, VALID_USER, INVALID_PASSWORD)),
        DbOpenError);

    // Check that database opens correctly and that version is as expected
    ASSERT_NO_THROW(lmptr = LeaseMgrFactory::create(connectionString(
        VALID_TYPE, VALID_NAME, VALID_HOST, VALID_USER, VALID_PASSWORD)));
    ASSERT_TRUE(lmptr);

/*
    pair<uint32_t, uint32_t> version = lmptr->getVersion();
    EXPECT_EQ(0, version.first);
    EXPECT_EQ(1, version.second);
*/
}

}; // end of anonymous namespace