/**
 *    Copyright (C) 2012 10gen Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects
 *    for all of the code used other than as permitted herein. If you modify
 *    file(s) with this exception, you may extend this exception to your
 *    version of the file(s), but you are not obligated to do so. If you do not
 *    wish to do so, delete this exception statement from your version. If you
 *    delete this exception statement from all source files in the program,
 *    then also delete it in the license file.
 */

#include "mongo/platform/basic.h"

#include "mongo/bson/oid.h"
#include "mongo/s/type_collection.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/time_support.h"

namespace {

using std::string;
using mongo::CollectionType;
using mongo::BSONObj;
using mongo::OID;
using mongo::Date_t;

TEST(Validity, Empty) {
    CollectionType coll;
    BSONObj emptyObj = BSONObj();
    string errMsg;
    ASSERT(coll.parseBSON(emptyObj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_FALSE(coll.isValid(NULL));
}

TEST(Validity, ShardedCollection) {
    CollectionType coll;
    BSONObj obj = BSON(CollectionType::ns("db.coll") << CollectionType::keyPattern(BSON("a" << 1))
                                                     << CollectionType::updatedAt(1ULL)
                                                     << CollectionType::epoch(OID::gen()));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_TRUE(coll.isValid(NULL));
}

TEST(Validity, UnshardedCollection) {
    CollectionType coll;
    BSONObj obj = BSON(CollectionType::ns("db.coll") << CollectionType::primary("my_primary_shard")
                                                     << CollectionType::updatedAt(1ULL)
                                                     << CollectionType::epoch(OID::gen()));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_TRUE(coll.isValid(NULL));
}

TEST(Validity, MixingOptionals) {
    CollectionType coll;
    BSONObj obj = BSON(CollectionType::ns("db.coll") << CollectionType::updatedAt(time(0))
                                                     << CollectionType::unique(true));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_FALSE(coll.isValid(NULL));
}

TEST(Compatibility, OldLastmod) {
    CollectionType coll;
    Date_t creation(time(0));
    BSONObj obj = BSON(CollectionType::ns("db.coll") << CollectionType::primary("my_primary_shard")
                                                     << CollectionType::DEPRECATED_lastmod(creation)
                                                     << CollectionType::epoch(OID::gen()));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_TRUE(coll.isValid(NULL));
    ASSERT_EQUALS(coll.getUpdatedAt(), creation);
}

TEST(Compatibility, OldEpoch) {
    CollectionType coll;
    OID epoch = OID::gen();
    BSONObj obj =
        BSON(CollectionType::ns("db.coll") << CollectionType::primary("my_primary_shard")
                                           << CollectionType::updatedAt(1ULL)
                                           << CollectionType::DEPRECATED_lastmodEpoch(epoch));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_TRUE(coll.isValid(NULL));
    ASSERT_EQUALS(coll.getEpoch(), epoch);
}

TEST(Compatibility, OldDroppedTrue) {
    // The 'dropped' field creates a special case. We still validly parse the document
    // containing it but we need to ignore dropped collections in code which uses this.
    // Dropped collections should not have sharding information.
    CollectionType coll;
    BSONObj obj =
        BSON(CollectionType::ns("db.coll") << CollectionType::DEPRECATED_lastmod(1ULL)
                                           << CollectionType::DEPRECATED_lastmodEpoch(OID::gen())
                                           << CollectionType::dropped(true));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_TRUE(coll.isValid(NULL));
}

TEST(Compatibility, OldDroppedFalse) {
    CollectionType coll;
    OID epoch = OID::gen();
    BSONObj obj =
        BSON(CollectionType::ns("db.coll")
             << CollectionType::keyPattern(BSON("a" << 1)) << CollectionType::unique(true)
             << CollectionType::DEPRECATED_lastmod(1ULL)
             << CollectionType::DEPRECATED_lastmodEpoch(epoch) << CollectionType::dropped(false));
    string errMsg;
    ASSERT(coll.parseBSON(obj, &errMsg));
    ASSERT_EQUALS(errMsg, "");
    ASSERT_EQUALS(coll.getNS(), "db.coll");
    ASSERT_EQUALS(coll.getKeyPattern(), BSON("a" << 1));
    ASSERT_EQUALS(coll.getUnique(), true);
    ASSERT_EQUALS(coll.getUpdatedAt(), 1ULL);
    ASSERT_EQUALS(coll.getEpoch(), epoch);
    ASSERT_TRUE(coll.isValid(NULL));
}

TEST(Validity, BadType) {
    CollectionType coll;
    BSONObj obj = BSON(CollectionType::ns() << 0);
    string errMsg;
    ASSERT((!coll.parseBSON(obj, &errMsg)) && (errMsg != ""));
}

}  // unnamed namespace
