Bulk Renamer
336 lines
14 KiB
Python
336 lines
14 KiB
Python
"""
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Main window: directory picker, file list, rule selector + stack, preview table, Apply.
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"""
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import os
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from pathlib import Path
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from PyQt6.QtWidgets import (
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QMainWindow,
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QWidget,
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QVBoxLayout,
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QHBoxLayout,
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QSplitter,
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QLabel,
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QPushButton,
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QLineEdit,
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QTableWidget,
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QTableWidgetItem,
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QFileDialog,
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QScrollArea,
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QGroupBox,
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QMessageBox,
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QHeaderView,
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QAbstractItemView,
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QFrame,
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)
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from PyQt6.QtCore import Qt, QDir, QItemSelectionModel
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from PyQt6.QtGui import QFont, QColor
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from engine.pipeline import compute_preview, perform_renames, save_undo_log, load_undo_log, perform_undo
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from engine.rules import Rule
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from .rule_widgets import (
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ReplaceRuleWidget,
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RegexRuleWidget,
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InsertRuleWidget,
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RemoveRuleWidget,
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CaseRuleWidget,
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NumberingRuleWidget,
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EpisodeRenumberRuleWidget,
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PrefixSuffixRuleWidget,
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CsvMappingRuleWidget,
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)
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class MainWindow(QMainWindow):
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def __init__(self):
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super().__init__()
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self.setWindowTitle("HSRename")
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self.resize(1000, 700)
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self._base_dir = ""
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self._file_names: list[str] = []
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self._preview_by_orig: dict[str, str] = {} # original name -> new name for selection preview
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self._setup_ui()
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self._refresh_preview()
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def _setup_ui(self):
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central = QWidget()
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self.setCentralWidget(central)
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layout = QVBoxLayout(central)
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# Top: directory bar
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dir_layout = QHBoxLayout()
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self.dir_edit = QLineEdit()
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self.dir_edit.setPlaceholderText("Select a folder or enter path...")
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self.dir_edit.textChanged.connect(self._on_dir_changed)
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browse_btn = QPushButton("Browse…")
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browse_btn.clicked.connect(self._browse)
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dir_layout.addWidget(QLabel("Folder:"))
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dir_layout.addWidget(self.dir_edit, 1)
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dir_layout.addWidget(browse_btn)
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layout.addLayout(dir_layout)
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# Split: left = rules, right = file list + preview
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split = QSplitter(Qt.Orientation.Horizontal)
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# Left: all rule panels at once (enable and configure multiple rules)
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left = QWidget()
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left_layout = QVBoxLayout(left)
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left_layout.addWidget(QLabel("Rename rules (applied in order; enable and configure any combination):"))
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self._rule_widgets = [
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ReplaceRuleWidget(),
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RegexRuleWidget(),
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InsertRuleWidget(),
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RemoveRuleWidget(),
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CaseRuleWidget(),
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NumberingRuleWidget(),
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EpisodeRenumberRuleWidget(),
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PrefixSuffixRuleWidget(),
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CsvMappingRuleWidget(),
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]
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rule_titles = [
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"1. Replace",
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"2. Regex",
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"3. Insert",
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"4. Remove",
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"5. Case",
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"6. Numbering",
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"7. Episode renumber",
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"8. Prefix / Suffix",
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"9. CSV mapping",
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]
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for title, w in zip(rule_titles, self._rule_widgets):
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w.enabled_cb.toggled.connect(self._refresh_preview) # always refresh when checkbox toggled
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w.ruleChanged.connect(self._on_rule_changed) # refresh only when enabled rule’s options change
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g = QGroupBox(title)
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g_layout = QVBoxLayout(g)
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g_layout.setContentsMargins(8, 12, 8, 8)
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g_layout.addWidget(w)
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left_layout.addWidget(g)
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left_layout.addStretch(1)
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scroll_left = QScrollArea()
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scroll_left.setWidget(left)
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scroll_left.setWidgetResizable(True)
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scroll_left.setFrameShape(QFrame.Shape.NoFrame)
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scroll_left.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAsNeeded)
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split.addWidget(scroll_left)
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# Right: file list + preview table
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right = QWidget()
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right_layout = QVBoxLayout(right)
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right_layout.addWidget(QLabel("Preview (Original → New name):"))
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self.preview_table = QTableWidget()
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self.preview_table.setColumnCount(3)
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self.preview_table.setHorizontalHeaderLabels(["Original name", "New name", "File type"])
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self.preview_table.horizontalHeader().setSectionResizeMode(1, QHeaderView.ResizeMode.Stretch)
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self.preview_table.setSelectionBehavior(QAbstractItemView.SelectionBehavior.SelectRows)
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self.preview_table.setSelectionMode(QAbstractItemView.SelectionMode.ExtendedSelection)
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self.preview_table.setEditTriggers(QAbstractItemView.EditTrigger.NoEditTriggers)
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self.preview_table.setSortingEnabled(True)
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self.preview_table.itemSelectionChanged.connect(self._on_preview_selection_changed)
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right_layout.addWidget(self.preview_table, 1)
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self.preview_status = QLabel("Add a folder to see files.")
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right_layout.addWidget(self.preview_status)
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btn_layout = QHBoxLayout()
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apply_btn = QPushButton("Apply renames")
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apply_btn.setMinimumHeight(36)
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apply_btn.clicked.connect(self._apply_renames)
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undo_btn = QPushButton("Undo last rename")
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undo_btn.setMinimumHeight(36)
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undo_btn.clicked.connect(self._undo_renames)
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btn_layout.addWidget(apply_btn)
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btn_layout.addWidget(undo_btn)
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right_layout.addLayout(btn_layout)
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split.addWidget(right)
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split.setSizes([320, 680])
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layout.addWidget(split, 1)
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def _browse(self):
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path = QFileDialog.getExistingDirectory(self, "Select folder")
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if path:
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self.dir_edit.setText(path)
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def _on_dir_changed(self):
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path = self.dir_edit.text().strip()
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if not path or not os.path.isdir(path):
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self._base_dir = ""
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self._file_names = []
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else:
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self._base_dir = path
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self._file_names = sorted(
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f for f in os.listdir(path)
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if os.path.isfile(os.path.join(path, f)) and not f.startswith(".")
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)
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self._refresh_preview()
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def _on_rule_changed(self):
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"""Refresh preview only if the changed rule has 'Use this rule' checked (no preview from unchecked rules)."""
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sender = self.sender()
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if sender is None:
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self._refresh_preview()
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return
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if sender in self._rule_widgets and sender.enabled_cb.isChecked():
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self._refresh_preview()
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# else: change was in an unchecked rule (e.g. mouse wheel on spinbox) — do not refresh
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def _get_rules(self) -> list[Rule]:
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"""All rules in fixed order; only enabled rules are applied."""
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return [w.getRule() for w in self._rule_widgets]
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def _ext_for(self, filename: str) -> str:
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"""Return file extension with leading dot, or empty string if none."""
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if "." in filename and not filename.startswith("."):
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return "." + filename.rsplit(".", 1)[-1].lower()
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return ""
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def _on_preview_selection_changed(self):
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"""Show preview (new name) only in selected rows; others show original."""
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if not self._preview_by_orig:
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return
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selected_rows = {idx.row() for idx in self.preview_table.selectionModel().selectedRows()}
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for row in range(self.preview_table.rowCount()):
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orig_item = self.preview_table.item(row, 0)
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if not orig_item:
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continue
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orig = orig_item.text()
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display_name = self._preview_by_orig.get(orig, orig) if row in selected_rows else orig
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self.preview_table.setItem(row, 1, QTableWidgetItem(display_name))
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def _refresh_preview(self):
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rules = self._get_rules()
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if not self._file_names:
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self._preview_by_orig = {}
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self.preview_table.setSortingEnabled(False)
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self.preview_table.setRowCount(0)
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self.preview_status.setText("Add a folder to see files.")
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return
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# Preserve sort and selection so checking a rule doesn’t reorder or clear selection
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header = self.preview_table.horizontalHeader()
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sort_section = header.sortIndicatorSection()
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sort_order = header.sortIndicatorOrder()
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selected_orig = set()
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for idx in self.preview_table.selectionModel().selectedRows():
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item = self.preview_table.item(idx.row(), 0)
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if item:
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selected_orig.add(item.text())
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self.preview_table.setSortingEnabled(False)
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self.preview_table.setRowCount(len(self._file_names))
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for row, orig in enumerate(self._file_names):
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self.preview_table.setItem(row, 0, QTableWidgetItem(orig))
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self.preview_table.setItem(row, 1, QTableWidgetItem(orig)) # show original until selected
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self.preview_table.setItem(row, 2, QTableWidgetItem(self._ext_for(orig)))
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self.preview_table.setSortingEnabled(True)
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header.setSortIndicator(sort_section, sort_order)
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# Numbering uses the table’s current (sorted) order, not load order
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order = [self.preview_table.item(r, 0).text() for r in range(self.preview_table.rowCount())]
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preview = compute_preview(order, rules)
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self._preview_by_orig = {orig: new_name for orig, new_name in preview}
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new_names = [p[1] for p in preview]
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has_collision = len(new_names) != len(set(new_names))
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# Restore selection by original name (multi-row)
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sm = self.preview_table.selectionModel()
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sm.clear()
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for row in range(self.preview_table.rowCount()):
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item = self.preview_table.item(row, 0)
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if item and item.text() in selected_orig:
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idx = self.preview_table.model().index(row, 0)
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sm.select(idx, QItemSelectionModel.SelectionFlag.Select | QItemSelectionModel.SelectionFlag.Rows)
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self._on_preview_selection_changed()
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if has_collision:
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self.preview_status.setText("Warning: some new names are duplicated. Fix rules to avoid overwriting.")
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self.preview_status.setStyleSheet("color: #c00;")
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else:
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self.preview_status.setText(f"{len(preview)} file(s). Ready to rename.")
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self.preview_status.setStyleSheet("")
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def _apply_renames(self):
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if not self._base_dir or not self._file_names:
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QMessageBox.warning(self, "No files", "Select a folder with files first.")
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return
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rules = self._get_rules()
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# Use current table order (after user sort) so numbering/episode renumber follow visible order
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if self.preview_table.rowCount() > 0:
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order = [self.preview_table.item(r, 0).text() for r in range(self.preview_table.rowCount())]
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else:
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order = self._file_names
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full_preview = compute_preview(order, rules)
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# Only rename selected rows; if nothing selected, rename all that would change
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selected_orig = {
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self.preview_table.item(idx.row(), 0).text()
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for idx in self.preview_table.selectionModel().selectedRows()
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if self.preview_table.item(idx.row(), 0)
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}
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if selected_orig:
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renames = [(a, b) for a, b in full_preview if a in selected_orig and a != b]
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else:
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renames = [(a, b) for a, b in full_preview if a != b]
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if not renames:
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QMessageBox.information(self, "Nothing to do", "No names would change with current rules.")
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return
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new_names = [b for _, b in renames]
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if len(new_names) != len(set(new_names)):
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QMessageBox.critical(
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self,
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"Collision",
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"Some new names are duplicated. Change your rules to avoid overwriting files.",
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)
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return
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ok = QMessageBox.question(
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self,
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"Confirm",
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f"Rename {len(renames)} file(s) in\n{self._base_dir}?",
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QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
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QMessageBox.StandardButton.No,
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)
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if ok != QMessageBox.StandardButton.Yes:
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return
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results = perform_renames(self._base_dir, renames, dry_run=False)
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errors = [r for r in results if r[2]]
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if errors:
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msg = "\n".join(f"{r[0]}: {r[2]}" for r in errors[:10])
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if len(errors) > 10:
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msg += f"\n... and {len(errors) - 10} more."
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QMessageBox.warning(self, "Rename errors", msg)
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else:
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save_undo_log(self._base_dir, renames)
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QMessageBox.information(self, "Done", f"Renamed {len(results)} file(s).")
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self._on_dir_changed()
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def _undo_renames(self):
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if not self._base_dir:
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QMessageBox.warning(self, "No folder", "Select a folder first.")
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return
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renames = load_undo_log(self._base_dir)
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if not renames:
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QMessageBox.information(
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self,
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"No undo data",
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f"No undo data for this folder.\n\nUndo is available after you run \"Apply renames\" here.",
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)
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return
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ok = QMessageBox.question(
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self,
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"Undo last rename",
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f"Revert {len(renames)} file(s) in\n{self._base_dir}\nback to their previous names?",
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QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
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QMessageBox.StandardButton.No,
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)
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if ok != QMessageBox.StandardButton.Yes:
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return
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results = perform_undo(self._base_dir)
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errors = [r for r in results if r[2]]
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if errors:
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msg = "\n".join(f"{r[0]}: {r[2]}" for r in errors[:10])
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if len(errors) > 10:
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msg += f"\n... and {len(errors) - 10} more."
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QMessageBox.warning(self, "Undo errors", msg)
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else:
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QMessageBox.information(self, "Undone", f"Reverted {len(results)} file(s).")
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self._on_dir_changed()
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