Begin implementing the localdocs ui in earnest.

gpt4all-chat/database.h

@@ -0,0 +1,64 @@
+#ifndef DATABASE_H
+#define DATABASE_H
+
+#include <QObject>
+#include <QtSql>
+#include <QQueue>
+#include <QFileInfo>
+#include <QThread>
+#include <QFileSystemWatcher>
+
+struct DocumentInfo
+{
+    int folder;
+    QFileInfo doc;
+};
+
+struct CollectionItem {
+    QString collection;
+    QString folder_path;
+    int folder_id = -1;
+};
+Q_DECLARE_METATYPE(CollectionItem)
+
+class Database : public QObject
+{
+    Q_OBJECT
+public:
+    Database();
+
+public Q_SLOTS:
+    void scanQueue();
+    void scanDocuments(int folder_id, const QString &folder_path);
+    void addFolder(const QString &collection, const QString &path);
+    void removeFolder(const QString &collection, const QString &path);
+    void retrieveFromDB(const QList<QString> &collections, const QString &text);
+    void cleanDB();
+
+Q_SIGNALS:
+    void docsToScanChanged();
+    void retrieveResult(const QList<QString> &result);
+    void collectionListUpdated(const QList<CollectionItem> &collectionList);
+
+private Q_SLOTS:
+    void start();
+    void directoryChanged(const QString &path);
+    bool addFolderToWatch(const QString &path);
+    bool removeFolderFromWatch(const QString &path);
+    void addCurrentFolders();
+    void updateCollectionList();
+
+private:
+    void removeFolderInternal(const QString &collection, int folder_id, const QString &path);
+    void chunkStream(QTextStream &stream, int document_id);
+    void handleDocumentErrorAndScheduleNext(const QString &errorMessage,
+        int document_id, const QString &document_path, const QSqlError &error);
+
+private:
+    QQueue<DocumentInfo> m_docsToScan;
+    QList<QString> m_retrieve;
+    QThread m_dbThread;
+    QFileSystemWatcher *m_watcher;
+};
+
+#endif // DATABASE_H