Bugfix for recent library re-creating a library at the last library l…

…ocation. (TagStudioDev#238)

* Prevent Automatic opening of a Library if the ".TagStudio" folder has been deleted.
If the library no longer has a `.TagStudio` folder clear the Last_Library value

* Add disabling recent libraries that are missing or have missing `.TagStudio` folders

* Fix bug where this would crash if an empty library was passed

* Grabbed the wrong color

tagstudio/src/core/enums.py

@@ -15,3 +15,5 @@ class Theme(str, enum.Enum):
     COLOR_BG = "#65000000"
     COLOR_HOVER = "#65AAAAAA"
     COLOR_PRESSED = "#65EEEEEE"
+    COLOR_DISABLED = "#65F39CAA"
+    COLOR_DISABLED_BG = "#65440D12"

tagstudio/src/qt/ts_qt.py

@@ -525,6 +525,14 @@ def start(self) -> None:
         elif self.settings.value(SettingItems.START_LOAD_LAST, True, type=bool):
             lib = self.settings.value(SettingItems.LAST_LIBRARY)
 
+            # TODO: Remove this check if the library is no longer saved with files
+            if lib and not (Path(lib) / TS_FOLDER_NAME).exists():
+                logging.error(
+                    f"[QT DRIVER] {TS_FOLDER_NAME} folder in {lib} does not exist."
+                )
+                self.settings.setValue(SettingItems.LAST_LIBRARY, "")
+                lib = None
+
         if lib:
             self.splash.showMessage(
                 f'Opening Library "{lib}"...',

tagstudio/src/qt/widgets/preview_panel.py

@@ -30,7 +30,7 @@
 
 from src.core.enums import SettingItems, Theme
 from src.core.library import Entry, ItemType, Library
-from src.core.constants import VIDEO_TYPES, IMAGE_TYPES, RAW_IMAGE_TYPES
+from src.core.constants import VIDEO_TYPES, IMAGE_TYPES, RAW_IMAGE_TYPES, TS_FOLDER_NAME
 from src.qt.helpers.file_opener import FileOpenerLabel, FileOpenerHelper, open_file
 from src.qt.modals.add_field import AddFieldModal
 from src.qt.widgets.thumb_renderer import ThumbRenderer
@@ -298,6 +298,7 @@ def set_button_style(btn: QPushButton, extras: list[str] | None = None):
                     "}"
                     f"QPushButton::hover{{background-color:{Theme.COLOR_HOVER.value};}}"
                     f"QPushButton::pressed{{background-color:{Theme.COLOR_PRESSED.value};}}"
+                    f"QPushButton::disabled{{background-color:{Theme.COLOR_DISABLED_BG.value};}}"
                 )
             )
             btn.setCursor(Qt.CursorShape.PointingHandCursor)
@@ -306,6 +307,11 @@ def set_button_style(btn: QPushButton, extras: list[str] | None = None):
             button = QPushButton(text=cut_val)
             button.setObjectName(f"path{item_key}")
 
+            lib = Path(full_val)
+            if not lib.exists() or not (lib / TS_FOLDER_NAME).exists():
+                button.setDisabled(True)
+                button.setToolTip("Location is missing")
+
             def open_library_button_clicked(path):
                 return lambda: self.driver.open_library(Path(path))