#pragma once

#include <QDateTime>
#include <QHash>
#include <QJSValue>
#include <QList>
#include <QObject>
#include <QPointer>
#include <qqmlintegration.h>
#include <QQmlListProperty>
#include <QSet>
#include <QString>
#include <QTimer>

namespace ZShell::config {
class Notifs;
}

namespace ZShell::Services {

class NotificationStore;
class NotifImageProvider;

class NotificationActionRow : public QObject {
	Q_OBJECT
	QML_ELEMENT
	QML_UNCREATABLE(
		"NotificationActionRow instances come from a NotificationStore")

	Q_PROPERTY(bool invokable READ invokable NOTIFY invokableChanged)
	Q_PROPERTY(QString identifier READ identifier CONSTANT)
	Q_PROPERTY(QString text READ text CONSTANT)

	public:
	NotificationActionRow(
		QObject* action,
		const QString& identifier,
		const QString& text,
		QObject* parent = nullptr);

	[[nodiscard]] bool invokable() const;
	[[nodiscard]] QString identifier() const;
	[[nodiscard]] QString text() const;

	Q_INVOKABLE void invoke();

	signals:
	void invokableChanged();

	private:
	QPointer<QObject> m_action;
	QString m_identifier;
	QString m_text;
};

class NotificationRow : public QObject {
	Q_OBJECT
	QML_ELEMENT
	QML_UNCREATABLE("NotificationRow instances come from a NotificationStore")

	Q_PROPERTY(QQmlListProperty<NotificationActionRow> actions READ actions NOTIFY actionsChanged)
	Q_PROPERTY(QString appIcon READ appIcon NOTIFY appIconChanged)
	Q_PROPERTY(QString appName READ appName NOTIFY appNameChanged)
	Q_PROPERTY(QString body READ body NOTIFY bodyChanged)
	Q_PROPERTY(bool closed READ closed NOTIFY closedChanged)
	Q_PROPERTY(bool hasActionIcons READ hasActionIcons NOTIFY hasActionIconsChanged)
	Q_PROPERTY(QString image READ image NOTIFY imageChanged)
	Q_PROPERTY(QString imageSource READ imageSource NOTIFY imageSourceChanged)
	Q_PROPERTY(int notificationId READ notificationId CONSTANT)
	Q_PROPERTY(int progress READ progress NOTIFY progressChanged)
	Q_PROPERTY(bool popup READ popup WRITE setPopup NOTIFY popupChanged)
	Q_PROPERTY(bool resident READ resident NOTIFY residentChanged)
	Q_PROPERTY(QString summary READ summary NOTIFY summaryChanged)
	Q_PROPERTY(QDateTime time READ time CONSTANT)
	Q_PROPERTY(QString timeStr READ timeStr NOTIFY timeStrChanged)
	Q_PROPERTY(int urgency READ urgency NOTIFY urgencyChanged)

	public:
	explicit NotificationRow(QObject* parent = nullptr);

	[[nodiscard]] QQmlListProperty<NotificationActionRow> actions();
	[[nodiscard]] QString appIcon() const;
	[[nodiscard]] QString appName() const;
	[[nodiscard]] QString body() const;
	[[nodiscard]] bool closed() const;
	[[nodiscard]] bool hasActionIcons() const;
	[[nodiscard]] QString image() const;
	[[nodiscard]] QString imageSource() const;
	[[nodiscard]] int notificationId() const;
	[[nodiscard]] int progress() const;
	[[nodiscard]] bool popup() const;
	void setPopup(bool popup);
	[[nodiscard]] bool resident() const;
	[[nodiscard]] QString summary() const;
	[[nodiscard]] QDateTime time() const;
	[[nodiscard]] QString timeStr() const;
	[[nodiscard]] int urgency() const;

	Q_INVOKABLE void close();
	Q_INVOKABLE void lock(QObject* item);
	Q_INVOKABLE void pausePopup();
	Q_INVOKABLE void resumePopup();
	Q_INVOKABLE void unlock(QObject* item);

	signals:
	void actionsChanged();
	void appIconChanged();
	void appNameChanged();
	void bodyChanged();
	void closedChanged();
	void hasActionIconsChanged();
	void imageChanged();
	void imageSourceChanged();
	void popupChanged();
	void progressChanged();
	void residentChanged();
	void summaryChanged();
	void timeStrChanged();
	void urgencyChanged();

	private:
	friend NotificationStore;

	[[nodiscard]] bool expired(qint64 now) const;
	void refreshTimeStr();

	QList<NotificationActionRow*> m_actions;
	NotificationStore* m_store = nullptr;

	QString m_appIcon;
	QString m_appName;
	QString m_body;
	QString m_digest;
	QString m_image;
	QString m_imageSource;
	QString m_summary;
	QString m_timeStr;

	qint64 m_deadline = 0;
	qint64 m_rowId = -1;
	qint64 m_timeMs = 0;

	QPointer<QObject> m_notification;
	QSet<QObject*> m_locks;
	QJSValue m_jsNotification;

	bool m_closed = false;
	bool m_hasActionIcons = false;
	bool m_liveConnected = false;
	bool m_popup = false;
	bool m_popupPaused = false;
	bool m_resident = false;

	int m_notificationId = 0;
	int m_progress = 0;
	int m_urgency = 1;
};

class NotificationStore : public QObject {
	Q_OBJECT
	QML_ELEMENT

	Q_PROPERTY(bool autoExpire READ autoExpire WRITE setAutoExpire NOTIFY autoExpireChanged)
	Q_PROPERTY(QString path READ path WRITE setPath NOTIFY pathChanged REQUIRED)
	Q_PROPERTY(int popupTimeout READ popupTimeout WRITE setPopupTimeout NOTIFY
				   popupTimeoutChanged)
	Q_PROPERTY(QQmlListProperty<NotificationRow> rows READ rows NOTIFY rowsChanged)

	public:
	explicit NotificationStore(QObject* parent = nullptr);
	~NotificationStore() override;

	[[nodiscard]] QString path() const;
	void setPath(const QString& path);

	[[nodiscard]] bool autoExpire() const;
	void setAutoExpire(bool autoExpire);

	[[nodiscard]] int popupTimeout() const;
	void setPopupTimeout(int timeout);

	[[nodiscard]] QQmlListProperty<NotificationRow> rows();

	Q_INVOKABLE NotificationRow* insert(const QJSValue& notification, bool popup);
	Q_INVOKABLE void clear();

	signals:
	void autoExpireChanged();
	void pathChanged();
	void popupTimeoutChanged();
	void rowsChanged();

	private slots:
	void handleLiveUpdate();

	private:
	friend NotificationRow;

	void attachNotification(
		NotificationRow* row, QObject* notification, const QJSValue& js);
	void applyNotifConfig(const config::Notifs* notifs);
	void closeDb();
	void copyFields(NotificationRow* row, QObject* notification);
	void handleClosed(NotificationRow* row);
	void insertDbRow(NotificationRow* row);
	void loadRows();
	void migrateLegacyJson();
	[[nodiscard]] bool openDb();
	void orphanCleanup();
	void persistPopup(const NotificationRow* row);
	void prune();
	void registerProvider();
	void removeRow(NotificationRow* row);
	// Coalesced rowsChanged: a burst of inserts/removes triggers one QML
	// rebind on the next event loop turn instead of one per notification.
	void scheduleRowsChanged();
	[[nodiscard]] NotificationRow* rowForNotificationId(int id) const;
	void startImageCache(NotificationRow* row);
	void storeImageBlob(
		const QPointer<NotificationRow>& row,
		const QString& digest,
		const QByteArray& png);
	void tick();
	void trimRows();
	void updateDbRow(NotificationRow* row);

	static QList<NotificationActionRow*> parseActions(
		const QJSValue& actions, NotificationRow* row);

	int m_popupTimeout = 5000;

	qint64 m_nextPrune = 0;
	qint64 m_nextTimeStrRefresh = 0;
	bool m_autoExpire = true;
	bool m_clearing = false;
	bool m_rowsSignalPending = false;

	QString m_uuid;
	QString m_path;

	QList<NotificationRow*> m_rows;
	QHash<QObject*, NotificationRow*> m_liveRows;

	NotifImageProvider* m_provider = nullptr;
	QTimer* m_tick = nullptr;
};

} // namespace ZShell::Services