/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef OHOS_ABILITY_RUNTIME_APP_STATE_OBSERVER_MANAGER_H
#define OHOS_ABILITY_RUNTIME_APP_STATE_OBSERVER_MANAGER_H

#include <map>
#include <mutex>
#include <set>
#include <string>

#include "ability_foreground_state_observer_interface.h"
#include "app_foreground_state_observer_interface.h"
#include "app_running_record.h"
#include "app_state_data.h"
#include "cpp/mutex.h"
#include "iapp_state_callback.h"
#include "iapplication_state_observer.h"
#include "page_state_data.h"
#include "permission_constants.h"
#include "permission_verification.h"
#include "singleton.h"
#include "task_handler_wrap.h"
#include "uri_permission_manager_client.h"

namespace OHOS {
namespace AppExecFwk {
using AppStateObserverMap = std::map<sptr<IApplicationStateObserver>, std::vector<std::string>>;
using AppForegroundStateObserverSet = std::set<sptr<IAppForegroundStateObserver>>;
using AbilityforegroundObserverSet = std::set<sptr<IAbilityForegroundStateObserver>>;

enum class ObserverType {
    APPLICATION_STATE_OBSERVER,
    APP_FOREGROUND_STATE_OBSERVER,
    ABILITY_FOREGROUND_STATE_OBSERVER,
};
class AppStateObserverManager : public std::enable_shared_from_this<AppStateObserverManager> {
    DECLARE_DELAYED_SINGLETON(AppStateObserverManager)
public:
    void Init();
    int32_t RegisterApplicationStateObserver(const sptr<IApplicationStateObserver> &observer,
        const std::vector<std::string> &bundleNameList = {});
    int32_t UnregisterApplicationStateObserver(const sptr<IApplicationStateObserver> &observer);
    int32_t RegisterAppForegroundStateObserver(const sptr<IAppForegroundStateObserver> &observer);
    int32_t UnregisterAppForegroundStateObserver(const sptr<IAppForegroundStateObserver> &observer);
    int32_t RegisterAbilityForegroundStateObserver(const sptr<IAbilityForegroundStateObserver> &observer);
    int32_t UnregisterAbilityForegroundStateObserver(const sptr<IAbilityForegroundStateObserver> &observer);
    void StateChangedNotifyObserver(
        const AbilityStateData abilityStateData, bool isAbility, bool isFromWindowFocusChanged);
    void OnAppStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord, const ApplicationState state,
        bool needNotifyApp, bool isFromWindowFocusChanged);
    void OnAppStarted(const std::shared_ptr<AppRunningRecord> &appRecord);
    void OnAppStopped(const std::shared_ptr<AppRunningRecord> &appRecord);
    void OnProcessCreated(const std::shared_ptr<AppRunningRecord> &appRecord, bool isPreload);
    void OnProcessStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord);
    void OnRenderProcessCreated(const std::shared_ptr<RenderRecord> &RenderRecord);
    void OnChildProcessCreated(std::shared_ptr<ChildProcessRecord> childRecord);
    void OnProcessDied(const std::shared_ptr<AppRunningRecord> &appRecord);
    void OnRenderProcessDied(const std::shared_ptr<RenderRecord> &renderRecord);
    void OnChildProcessDied(std::shared_ptr<ChildProcessRecord> childRecord);
    void OnProcessReused(const std::shared_ptr<AppRunningRecord> &appRecord);
    void OnPageShow(const PageStateData pageStateData);
    void OnPageHide(const PageStateData pageStateData);
    void OnAppCacheStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord, ApplicationState state);
private:
    void HandleAppStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord, const ApplicationState state,
        bool needNotifyApp, bool isFromWindowFocusChanged);
    void HandleOnAppStarted(const std::shared_ptr<AppRunningRecord> &appRecord);
    void HandleOnAppStopped(const std::shared_ptr<AppRunningRecord> &appRecord);
    void HandleStateChangedNotifyObserver(
        const AbilityStateData abilityStateData, bool isAbility, bool isFromWindowFocusChanged);
    void HandleOnAppProcessCreated(const std::shared_ptr<AppRunningRecord> &appRecord, bool isPreload);
    void HandleOnRenderProcessCreated(const std::shared_ptr<RenderRecord> &RenderRecord);
    void HandleOnChildProcessCreated(std::shared_ptr<ChildProcessRecord> childRecord);
    void HandleOnAppProcessDied(const std::shared_ptr<AppRunningRecord> &appRecord);
    void HandleOnRenderProcessDied(const std::shared_ptr<RenderRecord> &RenderRecord);
    void HandleOnChildProcessDied(std::shared_ptr<ChildProcessRecord> childRecord);
    bool ObserverExist(const sptr<IRemoteBroker> &observer);
    bool IsAppForegroundObserverExist(const sptr<IRemoteBroker> &observer);
    bool IsAbilityForegroundObserverExist(const sptr<IRemoteBroker> &observer);
    void AddObserverDeathRecipient(const sptr<IRemoteBroker> &observer, const ObserverType &type);
    void RemoveObserverDeathRecipient(const sptr<IRemoteBroker> &observer);
    AppStateObserverMap GetAppStateObserverMapCopy();
    AppForegroundStateObserverSet GetAppForegroundStateObserverSetCopy();
    AbilityforegroundObserverSet GetAbilityforegroundObserverSetCopy();
    ProcessData WrapProcessData(const std::shared_ptr<AppRunningRecord> &appRecord);
    ProcessData WrapRenderProcessData(const std::shared_ptr<RenderRecord> &renderRecord);
    int32_t WrapChildProcessData(ProcessData &processData, std::shared_ptr<ChildProcessRecord> childRecord);
    void OnObserverDied(const wptr<IRemoteObject> &remote, const ObserverType &type);
    AppStateData WrapAppStateData(const std::shared_ptr<AppRunningRecord> &appRecord,
    const ApplicationState state);
    void HandleOnProcessCreated(const ProcessData &data);
    void HandleOnProcessStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord);
    void HandleOnProcessDied(const ProcessData &data);
    void HandleOnProcessResued(const std::shared_ptr<AppRunningRecord> &appRecord);
    void HandleOnPageShow(const PageStateData pageStateData);
    void HandleOnPageHide(const PageStateData pageStateData);
    void HandleOnAppCacheStateChanged(const std::shared_ptr<AppRunningRecord> &appRecord, ApplicationState state);

private:
    std::shared_ptr<AAFwk::TaskHandlerWrap> handler_;
    int32_t dummyCode_ = 0;
    ffrt::mutex observerLock_;
    AppStateObserverMap appStateObserverMap_;
    ffrt::mutex appForegroundObserverLock_;
    AppForegroundStateObserverSet appForegroundStateObserverSet_;
    ffrt::mutex abilityforegroundObserverLock_;
    AbilityforegroundObserverSet abilityforegroundObserverSet_;
    ffrt::mutex recipientMapMutex_;
    std::map<sptr<IRemoteObject>, sptr<IRemoteObject::DeathRecipient>> recipientMap_;
};
}  // namespace AppExecFwk
}  // namespace OHOS
#endif  // OHOS_ABILITY_RUNTIME_APP_STATE_OBSERVER_MANAGER_H