UI-Signatures: implement signature update functionality with progress tracking

src/ui/widgets/signature_update.py

@@ -0,0 +1,59 @@
+from PySide6 import QtCore, QtWidgets
+
+from src.backend.catalogue import Catalogue
+from src.backend.database import Database
+
+from .widget_sources.admin_update_signatures_ui import Ui_Dialog
+
+
+class UpdaterThread(QtCore.QThread):
+    progress = QtCore.Signal(int)
+    currtot = QtCore.Signal(int, int)
+
+    def __init__(self, books=None):
+        super().__init__()
+        self.books = books
+        self.db = Database()
+        self.catalogue = Catalogue()
+
+    def run(self):
+        total_books = len(self.books)
+        for index, book in enumerate(self.books):
+            id = book["id"]
+            bookdata = book["bookdata"]
+            ppn = bookdata.link.split("kid=")[-1]
+            result = self.catalogue.get_book(ppn)
+            if result:
+                bookdata.signature = result.signature
+                print(bookdata)
+                self.db.updateBookdata(id, bookdata)
+            else:
+                print(f"No result for {ppn}")
+                self.db.deleteBook(id)
+            self.progress.emit(index + 1)
+            self.currtot.emit(index + 1, total_books)
+
+
+class UpdateSignatures(QtWidgets.QDialog, Ui_Dialog):
+    def __init__(self, parent=None):
+        super(UpdateSignatures, self).__init__(parent)
+        self.setupUi(self)
+        self.setWindowTitle("Updating signatures...")
+        self.progressBar.setValue(0)
+        self.pushButton.clicked.connect(self.start)
+        self.db = Database()
+        self.catalogue = Catalogue()
+
+    def start(self):
+        books = self.db.getAllBooks()
+        total_books = len(books)
+        self.progressBar.setMaximum(total_books)
+        self.updater = UpdaterThread(books)
+        self.updater.progress.connect(self.update_progress)
+        self.updater.start()
+
+    def update_progress(self, value):
+        self.progressBar.setValue(value)
+        if value >= self.progressBar.maximum():
+            self.pushButton.setText("Done")
+            self.pushButton.setEnabled(False)