feat: implement file and text drop handling for chat and add shrunk sidebar override for window view

Plugins/ZShell/Services/dropimporter.hpp

@@ -0,0 +1,62 @@
+#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