// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: GPL-2.0-or-later
//
// This file is part of libdnf: https://github.com/rpm-software-management/libdnf/
//
// Libdnf is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Libdnf 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with libdnf.  If not, see <https://www.gnu.org/licenses/>.

#include "history_rollback.hpp"

#include "arguments.hpp"
#include "dnf5/shared_options.hpp"
#include "transaction_id.hpp"

#include <libdnf5/utils/bgettext/bgettext-mark-domain.h>

namespace dnf5 {

using namespace libdnf5::cli;

void HistoryRollbackCommand::set_argument_parser() {
    get_argument_parser_command()->set_description("Undo all transactions performed after the specified transaction");
    transaction_specs = std::make_unique<TransactionSpecArguments>(*this, 1);
    auto & ctx = get_context();
    transaction_specs->get_arg()->set_complete_hook_func(create_history_id_autocomplete(ctx));
    auto skip_unavailable = std::make_unique<SkipUnavailableOption>(*this);
    ignore_extras = std::make_unique<IgnoreExtrasOption>(*this);
    ignore_installed = std::make_unique<IgnoreInstalledOption>(*this);
    create_store_option(*this);
    create_transient_option(*this);
    create_offline_option(*this);
}

void HistoryRollbackCommand::configure() {
    auto & context = get_context();
    context.set_load_system_repo(true);
    context.set_load_available_repos(Context::LoadAvailableRepos::ENABLED);
}

void HistoryRollbackCommand::run() {
    auto ts_specs = transaction_specs->get_value();
    libdnf5::transaction::TransactionHistory history(get_context().get_base());
    std::vector<libdnf5::transaction::Transaction> transactions;
    std::vector<libdnf5::transaction::Transaction> target_trans;

    target_trans = list_transactions_from_specs(history, ts_specs);

    if (target_trans.size() < 1) {
        throw libdnf5::cli::CommandExitError(1, M_("No matching transaction ID found, exactly one required."));
    }

    if (target_trans.size() > 1) {
        throw libdnf5::cli::CommandExitError(1, M_("Matched more than one transaction ID, exactly one required."));
    }

    auto max_id = history.list_transaction_ids().back();

    int64_t target_id = target_trans[0].get_id() + 1;
    if (target_id <= max_id) {
        transactions = history.list_transactions(target_id, max_id);
    }

    auto goal = get_context().get_goal();
    // To enable removal of dependency packages not present in the selected transactions
    // it requires allow_erasing. This will inform the user that additional removes
    // are required and the transaction won't proceed without --ignore-extras.
    goal->set_allow_erasing(true);

    auto settings = libdnf5::GoalJobSettings();
    settings.set_ignore_extras(ignore_extras->get_value());
    settings.set_ignore_installed(ignore_installed->get_value());
    goal->add_revert_transactions(transactions, settings);
}

}  // namespace dnf5
