/**
 *    Copyright (C) 2022-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    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
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    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 Server Side 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/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/sharded_index_catalog_commands_gen.h"
#include "mongo/db/s/sharding_index_catalog_ddl_util.h"
#include "mongo/db/s/sharding_index_catalog_util.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/transaction/transaction_participant.h"
#include "mongo/logv2/log.h"
#include "mongo/s/grid.h"
#include "mongo/s/sharding_feature_flags_gen.h"

#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding

namespace mongo {
namespace {

class ShardsvrDropIndexCatalogEntryParticipantCommand final
    : public TypedCommand<ShardsvrDropIndexCatalogEntryParticipantCommand> {
public:
    using Request = ShardsvrDropIndexCatalogEntryParticipant;

    bool skipApiVersionCheck() const override {
        // Internal command (server to server).
        return true;
    }

    std::string help() const override {
        return "Internal command. Do not call directly. Drops a globlal index for the shard-role "
               "catalog.";
    }

    bool adminOnly() const override {
        return false;
    }

    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
        return AllowedOnSecondary::kNever;
    }

    bool supportsRetryableWrite() const final {
        return true;
    }

    class Invocation final : public InvocationBase {
    public:
        using InvocationBase::InvocationBase;

        void typedRun(OperationContext* opCtx) {
            uassert(ErrorCodes::CommandNotSupported,
                    format(FMT_STRING("{} command not enabled"), definition()->getName()),
                    feature_flags::gGlobalIndexesShardingCatalog.isEnabled(
                        serverGlobalParams.featureCompatibility));
            uassert(ErrorCodes::IllegalOperation,
                    "This command can only be executed in steady state shards.",
                    ShardingState::get(opCtx)->canAcceptShardedCommands() == Status::OK());

            CommandHelpers::uassertCommandRunWithMajority(Request::kCommandName,
                                                          opCtx->getWriteConcern());

            const auto txnParticipant = TransactionParticipant::get(opCtx);
            uassert(6711903,
                    str::stream() << Request::kCommandName << " must be run as a retryable write",
                    txnParticipant);
            {
                AutoGetCollection coll(opCtx, ns(), LockMode::MODE_IS);
                const auto scopedCsr =
                    CollectionShardingRuntime::assertCollectionLockedAndAcquireShared(opCtx, ns());
                uassert(6711904,
                        "The critical section must be taken in order to execute this command",
                        scopedCsr->getCriticalSectionSignal(
                            opCtx, ShardingMigrationCriticalSection::kWrite));
            }

            opCtx->setAlwaysInterruptAtStepDownOrUp_UNSAFE();
            removeShardingIndexCatalogEntryFromCollection(opCtx,
                                                          ns(),
                                                          request().getCollectionUUID(),
                                                          request().getName(),
                                                          request().getLastmod());
        }

    private:
        NamespaceString ns() const override {
            return request().getCommandParameter();
        }

        bool supportsWriteConcern() const override {
            return true;
        }

        void doCheckAuthorization(OperationContext* opCtx) const override {
            uassert(ErrorCodes::Unauthorized,
                    "Unauthorized",
                    AuthorizationSession::get(opCtx->getClient())
                        ->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
                                                           ActionType::internal));
        }
    };

} shardsvrDropIndexCatalogEntryParticipantCommand;

}  // namespace
}  // namespace mongo