WIP V3: start/end times, moving row bug

Start/end times now stored separately from self.playlist_rows. Moving
next row to above current row now works.

app/playlistmodel.py

@@ -1,5 +1,7 @@
+from dataclasses import dataclass
 from datetime import datetime, timedelta
 from enum import auto, Enum
+from operator import attrgetter
 from typing import List, Optional
 
 from PyQt6.QtCore import (
@@ -20,6 +22,7 @@ from dbconfig import scoped_session, Session
 from helpers import (
     file_is_unreadable,
     get_embedded_time,
+    get_relative_date,
     open_in_audacity,
     ms_to_mmss,
     set_track_metadata,
@@ -52,12 +55,10 @@ class PlaylistRowData:
         self.artist: str = ""
         self.bitrate = 0
         self.duration: int = 0
-        self.end_time: Optional[datetime] = None
         self.lastplayed: datetime = Config.EPOCH
         self.path = ""
         self.played = False
         self.start_gap: Optional[int] = None
-        self.start_time: Optional[datetime] = None
         self.title: str = ""
 
         self.plrid: int = plr.id
@@ -84,6 +85,12 @@ class PlaylistRowData:
         )
 
 
+@dataclass
+class StartEndTimes:
+    start_time: Optional[datetime] = None
+    end_time: Optional[datetime] = None
+
+
 class PlaylistModel(QAbstractTableModel):
     """
     The Playlist Model
@@ -110,6 +117,7 @@ class PlaylistModel(QAbstractTableModel):
         super().__init__(*args, **kwargs)
 
         self.playlist_rows: dict[int, PlaylistRowData] = {}
+        self.start_end_times: dict[int, StartEndTimes] = {}
         self.signals = MusicMusterSignals()
 
         self.signals.add_track_to_header_signal.connect(self.add_track_to_header)
@@ -266,10 +274,9 @@ class PlaylistModel(QAbstractTableModel):
                 self.refresh_row(session, plr.plr_rownum)
 
             # Update track times
-            self.playlist_rows[row_number].start_time = datetime.now()
-            self.playlist_rows[row_number].end_time = datetime.now() + timedelta(
-                milliseconds=self.playlist_rows[row_number].duration
-            )
+            self.start_end_times[row_number].start_time = track_sequence.now.start_time
+            self.start_end_times[row_number].end_time = track_sequence.now.end_time
+
             # Update colour and times for current row
             self.invalidate_row(row_number)
             # Update all other track times
@@ -367,17 +374,19 @@ class PlaylistModel(QAbstractTableModel):
         if column == Col.DURATION.value:
             return QVariant(ms_to_mmss(prd.duration))
         if column == Col.START_TIME.value:
-            if prd.start_time:
-                return QVariant(prd.start_time.strftime(Config.TRACK_TIME_FORMAT))
-            else:
+            if row in self.start_end_times:
+                start_time = self.start_end_times[row].start_time
+                if start_time:
+                    return QVariant(start_time.strftime(Config.TRACK_TIME_FORMAT))
             return QVariant()
         if column == Col.END_TIME.value:
-            if prd.end_time:
-                return QVariant(prd.end_time.strftime(Config.TRACK_TIME_FORMAT))
-            else:
+            if row in self.start_end_times:
+                end_time = self.start_end_times[row].end_time
+                if end_time:
+                    return QVariant(end_time.strftime(Config.TRACK_TIME_FORMAT))
             return QVariant()
         if column == Col.LAST_PLAYED.value:
-            return QVariant(prd.lastplayed)
+            return QVariant(get_relative_date(prd.lastplayed))
         if column == Col.BITRATE.value:
             return QVariant(prd.bitrate)
         if column == Col.NOTE.value:
@@ -647,13 +656,20 @@ class PlaylistModel(QAbstractTableModel):
         for modified_row in modified_rows:
             self.invalidate_row(modified_row)
 
-    def mark_unplayed(self, row_number: int) -> None:
+    def mark_unplayed(self, row_numbers: List[int]) -> None:
         """
         Mark row as unplayed
         """
 
-        self.playlist_rows[row_number].played = False
-        self.invalidate_row(row_number)
+        with Session() as session:
+            for row_number in row_numbers:
+                plr = session.get(PlaylistRows, self.playlist_rows[row_number].plrid)
+                if not plr:
+                    return
+                plr.played = False
+                self.refresh_row(session, row_number)
+
+        self.invalidate_rows(row_numbers)
 
     def move_rows(self, from_rows: List[int], to_row_number: int) -> None:
         """
@@ -676,6 +692,7 @@ class PlaylistModel(QAbstractTableModel):
             from_rows, range(next_to_row, next_to_row + len(from_rows))
         ):
             row_map[from_row] = to_row
+
         # Move the remaining rows to the row_map. We want to fill it
         # before (if there are gaps) and after (likewise) the rows that
         # are moving.
@@ -693,6 +710,14 @@ class PlaylistModel(QAbstractTableModel):
                         old_row, HEADER_NOTES_COLUMN, 1, 1
                     )
 
+        # Check to see whether any rows in track_sequence have moved
+        if track_sequence.previous.plr_rownum in row_map:
+            track_sequence.previous.plr_rownum = row_map[track_sequence.previous.plr_rownum]
+        if track_sequence.now.plr_rownum in row_map:
+            track_sequence.now.plr_rownum = row_map[track_sequence.now.plr_rownum]
+        if track_sequence.next.plr_rownum in row_map:
+            track_sequence.next.plr_rownum = row_map[track_sequence.next.plr_rownum]
+
         # For SQLAlchemy, build a list of dictionaries that map plrid to
         # new row number:
         sqla_map: List[dict[str, int]] = []
@@ -706,6 +731,7 @@ class PlaylistModel(QAbstractTableModel):
             self.refresh_data(session)
 
         # Update display
+        self.update_track_times()
         self.invalidate_rows(list(row_map.keys()))
 
     def open_in_audacity(self, row_number: int) -> None:
@@ -753,7 +779,7 @@ class PlaylistModel(QAbstractTableModel):
             self.playlist_rows[p.plr_rownum] = PlaylistRowData(p)
 
     def refresh_row(self, session, row_number):
-        """Populate dict for one row for data calls"""
+        """Populate dict for one row from database"""
 
         p = PlaylistRows.deep_row(session, self.playlist_id, row_number)
         self.playlist_rows[row_number] = PlaylistRowData(p)
@@ -897,35 +923,44 @@ class PlaylistModel(QAbstractTableModel):
         Sort selected rows by artist
         """
 
-        pass
+        self.sort_by_attribute(row_numbers, 'artist')
 
-    def sort_by_duration(self, row_numbers: List[int]) -> None:
+    def sort_by_attribute(self, row_numbers: List[int], attr_name: str) -> None:
         """
-        Sort selected rows by duration
-        """
-
-        pass
-
-    def sort_by_lastplayed(self, row_numbers: List[int]) -> None:
-        """
-        Sort selected rows by lastplayed
-        """
-
-        pass
-
-    def sort_by_title(self, row_numbers: List[int]) -> None:
-        """
-        Sort selected rows by title
+        Sort selected rows by passed attribute name where 'attribute' is a
+        key in PlaylistRowData
         """
 
         # Create a subset of playlist_rows with the rows we are
         # interested in
         shortlist_rows = {k: self.playlist_rows[k] for k in row_numbers}
         sorted_list = [
-            k for k, v in sorted(shortlist_rows.items(), key=lambda item: item[1].title)
+            plr.plr_rownum for plr in
+            sorted(shortlist_rows.values(), key=attrgetter(attr_name))
         ]
         self.move_rows(sorted_list, min(sorted_list))
 
+    def sort_by_duration(self, row_numbers: List[int]) -> None:
+        """
+        Sort selected rows by duration
+        """
+
+        self.sort_by_attribute(row_numbers, 'duration')
+
+    def sort_by_lastplayed(self, row_numbers: List[int]) -> None:
+        """
+        Sort selected rows by lastplayed
+        """
+
+        self.sort_by_attribute(row_numbers, 'lastplayed')
+
+    def sort_by_title(self, row_numbers: List[int]) -> None:
+        """
+        Sort selected rows by title
+        """
+
+        self.sort_by_attribute(row_numbers, 'title')
+
     def supportedDropActions(self) -> Qt.DropAction:
         return Qt.DropAction.MoveAction | Qt.DropAction.CopyAction
 
@@ -938,21 +973,22 @@ class PlaylistModel(QAbstractTableModel):
         update_rows: List[int] = []
 
         for row_number in range(len(self.playlist_rows)):
+            stend = self.start_end_times[row_number] = StartEndTimes()
             prd = self.playlist_rows[row_number]
 
             # Reset start_time if this is the current row
             if row_number == track_sequence.now.plr_rownum:
-                # Start/end times for current track are set in current_track_started
+                stend.start_time = track_sequence.now.start_time
+                stend.end_time = track_sequence.now.end_time
                 if not next_start_time:
-                    next_start_time = prd.end_time
+                    next_start_time = stend.end_time
                 continue
 
             # Set start time for next row if we have a current track
-            current_end_time = track_sequence.now.end_time
-            if row_number == track_sequence.next.plr_rownum and current_end_time:
-                prd.start_time = current_end_time
-                prd.end_time = current_end_time + timedelta(milliseconds=prd.duration)
-                next_start_time = prd.end_time
+            if row_number == track_sequence.next.plr_rownum and track_sequence.now.end_time:
+                stend.start_time = track_sequence.now.end_time
+                stend.end_time = stend.start_time + timedelta(milliseconds=prd.duration)
+                next_start_time = stend.end_time
                 update_rows.append(row_number)
                 continue
 
@@ -973,14 +1009,11 @@ class PlaylistModel(QAbstractTableModel):
                 < row_number
                 < track_sequence.next.plr_rownum
             ):
-                prd.start_time = None
-                prd.end_time = None
                 update_rows.append(row_number)
                 continue
 
             # Reset start time if timing in header or at current track
-            if not prd.path:
-                # This is a header row
+            if self.is_header_row(row_number):
                 header_time = get_embedded_time(prd.note)
                 if header_time:
                     next_start_time = header_time
@@ -989,14 +1022,14 @@ class PlaylistModel(QAbstractTableModel):
                 # start time
                 if next_start_time is None:
                     continue
-                if prd.start_time != next_start_time:
-                    prd.start_time = next_start_time
+                if stend.start_time != next_start_time:
+                    stend.start_time = next_start_time
                     update_rows.append(row_number)
                 next_start_time += timedelta(
                     milliseconds=self.playlist_rows[row_number].duration
                 )
-                if prd.end_time != next_start_time:
-                    prd.end_time = next_start_time
+                if stend.end_time != next_start_time:
+                    stend.end_time = next_start_time
                     update_rows.append(row_number)
 
         # Update start/stop times of rows that have changed

app/playlists.py

@@ -1103,11 +1103,15 @@ class PlaylistTab(QTableView):
 
         # Mark unplayed
         if track_row and model.is_unplayed_row(row_number):
-            self._add_context_menu("Mark unplayed", lambda: model.mark_unplayed(row_number))
+            self._add_context_menu(
+                "Mark unplayed", lambda: model.mark_unplayed(self._get_selected_rows())
+            )
 
         # Unmark as next
         if next_row:
-            self._add_context_menu("Unmark as next track", lambda: model.set_next_row(None))
+            self._add_context_menu(
+                "Unmark as next track", lambda: model.set_next_row(None)
+            )
 
         # ----------------------
         self.menu.addSeparator()
@@ -1134,9 +1138,6 @@ class PlaylistTab(QTableView):
             lambda: model.sort_by_lastplayed(self._get_selected_rows()),
             parent_menu=sort_menu,
         )
-        if sort_menu:
-            sort_menu.setEnabled(model.selection_is_sortable(self._get_selected_rows()))
-        self._add_context_menu("Undo sort", self._sort_undo, not bool(self.sort_undo))
 
         # Info TODO
         if track_row:
@@ -1144,8 +1145,7 @@ class PlaylistTab(QTableView):
 
         # Track path TODO
         if track_row:
-            self._add_context_menu(
-                "Copy track path", lambda: print("Track path"))
+            self._add_context_menu("Copy track path", lambda: print("Track path"))
 
     def _calculate_end_time(
         self, start: Optional[datetime], duration: int

test_playlistmodel.py

@@ -202,7 +202,7 @@ def test_insert_header_row_end(monkeypatch, session):
     # Test against edit_role because display_role for headers is
     # handled differently (sets up row span)
     assert (
-        model.edit_role(model.rowCount(), playlistmodel.Col.NOTE.value, prd)
+        model.edit_role(model.rowCount() - 1, playlistmodel.Col.NOTE.value, prd)
         == note_text
     )
 
@@ -222,7 +222,7 @@ def test_insert_header_row_middle(monkeypatch, session):
     # Test against edit_role because display_role for headers is
     # handled differently (sets up row span)
     assert (
-        model.edit_role(model.rowCount(), playlistmodel.Col.NOTE.value, prd)
+        model.edit_role(model.rowCount() - 1, playlistmodel.Col.NOTE.value, prd)
         == note_text
     )