#pragma once
#include <QHash>

#include <QList>
#include <QNetworkAccessManager>
#include <QObject>
#include <QQmlEngine>
#include <QStringList>
#include <QTemporaryDir>
#include <QUrl>

namespace ZShell::Services {

class DropImporter : public QObject {
	Q_OBJECT
	QML_ELEMENT
	QML_SINGLETON

	public:
	enum Decision { Ignore, InsertText, Attach };
	Q_ENUM(Decision)

	explicit DropImporter(QObject* parent = nullptr);

	Q_INVOKABLE Decision decide(
		const QList<QUrl>& urls,
		const QString& text,
		const QString& html,
		bool hasRawImage) const;

	Q_INVOKABLE int importAttachments(
		const QList<QUrl>& urls,
		const QString& html,
		const QByteArray& rawImage);

	signals:
	void importFinished(
		int id, const QStringList& paths, const QStringList& errors);

	private:
	struct Request {
		int pending = 0;
		QStringList files;
		QStringList errors;
	};

	void addLocal(int id, const QUrl& url);
	void download(int id, const QUrl& url);
	void saveBytes(int id, const QByteArray& bytes);
	void succeed(int id, const QString& path);
	void failWith(int id, const QString& message);
	void finishUnit(int id);
	QString newSubdir();

	QNetworkAccessManager m_nam;
	QTemporaryDir m_tempDir;
	QHash<int, Request> m_requests;
	int m_nextId = 0;
	int m_counter = 0;
};

} // namespace ZShell::Services