Implement end times in playlist

app/model.py

@@ -179,6 +179,15 @@ class Tracks(Base):
             session.add(track)
         return track
 
+    @staticmethod
+    def get_duration(id):
+        try:
+            return session.query(
+                Tracks.duration).filter(Tracks.id == id).one()[0]
+        except NoResultFound:
+            ERROR(f"Can't find track id {id}")
+            return None
+
     @staticmethod
     def get_path(id):
         try:

app/playlists.py

@@ -13,6 +13,7 @@ from PyQt5.QtWidgets import (
 import helpers
 
 from config import Config
+from datetime import datetime, timedelta
 from log import DEBUG, ERROR
 from model import Playdates, Playlists, Settings, Tracks
 
@@ -203,6 +204,13 @@ class Playlist(QTableWidget):
         except AttributeError:
             return ""
 
+    def get_row_endtime(self, row, start):
+        "Return this row's end time given its start time"
+
+        duration = Tracks.get_duration(
+            int(self.item(row, self.COL_INDEX).text()))
+        return start + timedelta(milliseconds=duration)
+
     def is_below(self, pos, index):
         rect = self.visualRect(index)
         margin = 2
@@ -358,8 +366,14 @@ class Playlist(QTableWidget):
         # Update metadata
         self.meta_set_current(self.meta_get_next())
 
-        # Set up metadata for next track in playlist if there is one.
+        # Set track start time
         current_row = self.meta_get_current()
+        endtime = datetime.now() + timedelta(
+            milliseconds=self.current_track.silence_at)
+        item = QTableWidgetItem(endtime.strftime("%H:%M:%S"))
+        self.setItem(current_row, self.COL_ENDTIME, item)
+
+        # Set up metadata for next track in playlist if there is one.
         if current_row is not None:
             start = current_row + 1
         else:
@@ -417,16 +431,24 @@ class Playlist(QTableWidget):
         next = self.meta_get_next()
         notes = self.meta_get_notes()
 
+        # Set colours and start times
+        previous_end = None
         for row in range(self.rowCount()):
             if row == current:
                 self.set_row_colour(
                     row, QColor(Config.COLOUR_CURRENT_PLAYLIST)
                 )
+                previous_end = datetime.strptime(self.item(
+                    row, self.COL_ENDTIME).text(), "%H:%M:%S")
                 self.set_row_bold(row)
             elif row == next:
                 self.set_row_colour(
                     row, QColor(Config.COLOUR_NEXT_PLAYLIST)
                 )
+                if previous_end:
+                    previous_end = self.get_row_endtime(row, previous_end)
+                    item = QTableWidgetItem(previous_end.strftime("%H:%M:%S"))
+                    self.setItem(row, self.COL_ENDTIME, item)
                 self.set_row_bold(row)
             elif row in notes:
                 self.set_row_colour(
@@ -441,6 +463,12 @@ class Playlist(QTableWidget):
                 self.set_row_colour(row, colour)
                 if self.item(row, self.COL_INDEX):
                     if int(self.item(row, self.COL_INDEX).text()) > 0:
+                        if previous_end:
+                            previous_end = self.get_row_endtime(
+                                row, previous_end)
+                            item = QTableWidgetItem(
+                                previous_end.strftime("%H:%M:%S"))
+                            self.setItem(row, self.COL_ENDTIME, item)
                         track_id = int(self.item(row, self.COL_INDEX).text())
                         if track_id in self.played_tracks:
                             self.set_row_not_bold(row)

app/ui/main_window.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>MainWindow</string>
+   <string>Music Muster</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout_2">
@@ -718,6 +718,7 @@ border: 1px solid rgb(85, 87, 83);</string>
     <property name="title">
      <string>Fi&amp;le</string>
     </property>
+    <addaction name="actionE_xit"/>
    </widget>
    <widget class="QMenu" name="menuPlaylist">
     <property name="title">
@@ -819,6 +820,11 @@ border: 1px solid rgb(85, 87, 83);</string>
     <string>&amp;Resume previous</string>
    </property>
   </action>
+  <action name="actionE_xit">
+   <property name="text">
+    <string>E&amp;xit</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>
@@ -828,5 +834,22 @@ border: 1px solid rgb(85, 87, 83);</string>
   </customwidget>
  </customwidgets>
  <resources/>
- <connections/>
+ <connections>
+  <connection>
+   <sender>actionE_xit</sender>
+   <signal>triggered()</signal>
+   <receiver>MainWindow</receiver>
+   <slot>close()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>-1</x>
+     <y>-1</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>383</x>
+     <y>299</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
 </ui>