Atmosphere/stratosphere/ncm/source/impl/lr_manager.cpp

/*
 * Copyright (c) 2019 Adubbz
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "../lr_contentlocationresolver.hpp"
#include "../lr_redirectonlylocationresolver.hpp"
#include "lr_manager.hpp"

namespace sts::lr::impl {

    namespace {

        BoundedMap<ncm::StorageId, std::shared_ptr<ILocationResolver>, 5> g_location_resolvers;
        std::shared_ptr<RegisteredLocationResolverInterface> g_registered_location_resolver = nullptr;
        std::shared_ptr<AddOnContentLocationResolverInterface> g_add_on_content_location_resolver = nullptr;
        HosMutex g_mutex;

    }

    Result OpenLocationResolver(Out<std::shared_ptr<ILocationResolver>> out, ncm::StorageId storage_id) {
        std::scoped_lock lk(g_mutex);
        auto resolver = g_location_resolvers.Find(storage_id);

        if (!resolver) {
            if (storage_id == ncm::StorageId::Host) {
                g_location_resolvers[storage_id] = std::make_shared<RedirectOnlyLocationResolverInterface>();
            } else {
                auto content_resolver = std::make_shared<ContentLocationResolverInterface>(storage_id);
                R_TRY(content_resolver->Refresh());
                g_location_resolvers[storage_id] = std::move(content_resolver);
            }
        }

        /* Make a copy of the resolver for output. */
        auto tmp_resolver = g_location_resolvers[storage_id];
        out.SetValue(std::move(tmp_resolver));
        return ResultSuccess;
    }

    Result OpenRegisteredLocationResolver(Out<std::shared_ptr<RegisteredLocationResolverInterface>> out) {
        std::scoped_lock lk(g_mutex);

        if (!g_registered_location_resolver) {
            g_registered_location_resolver = std::make_shared<RegisteredLocationResolverInterface>();
        }
        
        /* Make a copy of the resolver for output. */
        auto tmp_resolver = g_registered_location_resolver;
        out.SetValue(std::move(tmp_resolver));
        return ResultSuccess;
    }
    
    Result RefreshLocationResolver(ncm::StorageId storage_id) {
        std::scoped_lock lk(g_mutex);
        auto resolver = g_location_resolvers.Find(storage_id);

        if (!resolver) {
            return ResultLrUnknownStorageId;
        }

        (*resolver)->Refresh();
        return ResultSuccess;
    }

    Result OpenAddOnContentLocationResolver(Out<std::shared_ptr<AddOnContentLocationResolverInterface>> out) {
        std::scoped_lock lk(g_mutex);

        if (!g_add_on_content_location_resolver) {
            g_add_on_content_location_resolver = std::make_shared<AddOnContentLocationResolverInterface>();
        }
        
        /* Make a copy of the resolver for output. */
        auto tmp_resolver = g_add_on_content_location_resolver;
        out.SetValue(std::move(tmp_resolver));
        return ResultSuccess;
    }

}