Add CSV mapping rule and Undo last rename feature

Made-with: Cursor

gui/rule_widgets.py

@@ -13,6 +13,8 @@ from PyQt6.QtWidgets import (
     QGroupBox,
     QFormLayout,
     QStackedWidget,
+    QPushButton,
+    QFileDialog,
 )
 from PyQt6.QtCore import pyqtSignal
 
@@ -25,6 +27,7 @@ from engine.rules import (
     EpisodeRenumberRule,
     RegexRule,
     PrefixSuffixRule,
+    CsvMappingRule,
 )
 
 
@@ -325,3 +328,45 @@ class PrefixSuffixRuleWidget(QWidget):
         r = PrefixSuffixRule(prefix=self.prefix.text(), suffix=self.suffix.text())
         r.enabled = self.enabled_cb.isChecked()
         return r
+
+
+class CsvMappingRuleWidget(QWidget):
+    ruleChanged = pyqtSignal()
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        layout = QFormLayout(self)
+        self.enabled_cb = QCheckBox("Use this rule")
+        self.enabled_cb.setChecked(False)
+        self.enabled_cb.toggled.connect(self._emit)
+        layout.addRow(self.enabled_cb)
+        path_row = QHBoxLayout()
+        self.path_edit = QLineEdit()
+        self.path_edit.setPlaceholderText("Path to CSV file…")
+        self.path_edit.textChanged.connect(self._emit)
+        browse_btn = QPushButton("Browse…")
+        browse_btn.clicked.connect(self._browse)
+        path_row.addWidget(self.path_edit, 1)
+        path_row.addWidget(browse_btn)
+        layout.addRow("CSV file:", path_row)
+        info = QLabel('CSV must have columns "Original Name" and "Target Name". Lookup is by current filename.')
+        info.setWordWrap(True)
+        layout.addRow(info)
+
+    def _browse(self):
+        path, _ = QFileDialog.getOpenFileName(
+            self,
+            "Select CSV",
+            "",
+            "CSV (*.csv);;All files (*)",
+        )
+        if path:
+            self.path_edit.setText(path)
+
+    def _emit(self):
+        self.ruleChanged.emit()
+
+    def getRule(self) -> CsvMappingRule:
+        r = CsvMappingRule(csv_path=self.path_edit.text().strip())
+        r.enabled = self.enabled_cb.isChecked()
+        return r