refactor: extract table sorting logic and media info loading to new modules

auditui/app.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import unicodedata
 from typing import TYPE_CHECKING
 
 from textual import work
@@ -15,6 +14,7 @@ from .constants import *
 from .downloads import DownloadManager
 from .library import LibraryClient
 from .playback import PlaybackController
+from .table_helpers import create_progress_sort_key, create_title_sort_key
 
 if TYPE_CHECKING:
     from textual.widgets._data_table import ColumnKey
@@ -221,14 +221,8 @@ class Auditui(App):
         """Sort table by title, toggling direction on each press."""
         table = self.query_one(DataTable)
         if table.row_count > 0 and self.title_column_key:
-            def title_key(row_values):
-                title_cell = row_values[0]
-                if isinstance(title_cell, str):
-                    normalized = unicodedata.normalize('NFD', title_cell)
-                    return normalized.encode('ascii', 'ignore').decode('ascii').lower()
-                return str(title_cell).lower()
-
-            table.sort(key=title_key, reverse=self.title_sort_reverse)
+            title_key, reverse = create_title_sort_key(self.title_sort_reverse)
+            table.sort(key=title_key, reverse=reverse)
             self.title_sort_reverse = not self.title_sort_reverse
 
     def action_sort_by_progress(self) -> None:
@@ -236,17 +230,9 @@ class Auditui(App):
         table = self.query_one(DataTable)
         if table.row_count > 0:
             self.progress_sort_reverse = not self.progress_sort_reverse
-
-            def progress_key(row_values):
-                progress_cell = row_values[self.progress_column_index]
-                if isinstance(progress_cell, str):
-                    try:
-                        return float(progress_cell.rstrip("%"))
-                    except (ValueError, AttributeError):
-                        return 0.0
-                return 0.0
-
-            table.sort(key=progress_key, reverse=self.progress_sort_reverse)
+            progress_key, reverse = create_progress_sort_key(
+                self.progress_column_index, self.progress_sort_reverse)
+            table.sort(key=progress_key, reverse=reverse)
 
     def action_show_all(self) -> None:
         """Toggle between showing all and unfinished books."""

auditui/media_info.py

@@ -0,0 +1,46 @@
+"""Media information loading for Audible content."""
+
+import json
+import shutil
+import subprocess
+from pathlib import Path
+
+
+def load_media_info(path: Path, activation_hex: str | None = None) -> tuple[float | None, list[dict]]:
+    """Load media information including duration and chapters using ffprobe.
+
+    Returns:
+        Tuple of (duration in seconds, list of chapter dicts with start_time, end_time, title)
+    """
+    if not shutil.which("ffprobe"):
+        return None, []
+
+    try:
+        cmd = ["ffprobe", "-v", "quiet", "-print_format",
+               "json", "-show_format", "-show_chapters"]
+        if activation_hex:
+            cmd.extend(["-activation_bytes", activation_hex])
+        cmd.append(str(path))
+
+        result = subprocess.run(
+            cmd, capture_output=True, text=True, timeout=10)
+        if result.returncode != 0:
+            return None, []
+
+        data = json.loads(result.stdout)
+        format_info = data.get("format", {})
+        duration_str = format_info.get("duration")
+        duration = float(duration_str) if duration_str else None
+
+        chapters_data = data.get("chapters", [])
+        chapters = [
+            {
+                "start_time": float(ch.get("start_time", 0)),
+                "end_time": float(ch.get("end_time", 0)),
+                "title": ch.get("tags", {}).get("title", f"Chapter {idx + 1}"),
+            }
+            for idx, ch in enumerate(chapters_data)
+        ]
+        return duration, chapters
+    except (json.JSONDecodeError, subprocess.TimeoutExpired, ValueError, KeyError):
+        return None, []

auditui/playback.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import json
 import os
 import shutil
 import signal
@@ -13,6 +12,7 @@ from typing import Callable
 
 from .downloads import DownloadManager
 from .library import LibraryClient
+from .media_info import load_media_info
 
 StatusCallback = Callable[[str], None]
 
@@ -89,7 +89,9 @@ class PlaybackController:
             self.playback_start_time = time.time()
             self.paused_duration = 0.0
             self.pause_start_time = None
-            self._load_media_info(path, activation_hex)
+            duration, chapters = load_media_info(path, activation_hex)
+            self.total_duration = duration
+            self.chapters = chapters
             notify(f"Playing: {path.name}")
             return True
 
@@ -358,41 +360,6 @@ class PlaybackController:
         """Seek backward by specified seconds. Returns True if action was taken."""
         return self._seek(seconds, "backward")
 
-    def _load_media_info(self, path: Path, activation_hex: str | None) -> None:
-        """Load media information including duration and chapters using ffprobe."""
-        if not shutil.which("ffprobe"):
-            return
-
-        try:
-            cmd = ["ffprobe", "-v", "quiet", "-print_format",
-                   "json", "-show_format", "-show_chapters"]
-            if activation_hex:
-                cmd.extend(["-activation_bytes", activation_hex])
-            cmd.append(str(path))
-
-            result = subprocess.run(
-                cmd, capture_output=True, text=True, timeout=10)
-            if result.returncode != 0:
-                return
-
-            data = json.loads(result.stdout)
-            format_info = data.get("format", {})
-            duration_str = format_info.get("duration")
-            if duration_str:
-                self.total_duration = float(duration_str)
-
-            chapters_data = data.get("chapters", [])
-            self.chapters = [
-                {
-                    "start_time": float(ch.get("start_time", 0)),
-                    "end_time": float(ch.get("end_time", 0)),
-                    "title": ch.get("tags", {}).get("title", f"Chapter {idx + 1}"),
-                }
-                for idx, ch in enumerate(chapters_data)
-            ]
-        except (json.JSONDecodeError, subprocess.TimeoutExpired, ValueError, KeyError):
-            pass
-
     def get_current_progress(self) -> tuple[str, float, float] | None:
         """Get current playback progress."""
         if not self.is_playing or self.playback_start_time is None:

auditui/table_helpers.py

@@ -0,0 +1,40 @@
+"""Helper functions for table operations."""
+
+import unicodedata
+from typing import Callable
+
+from .constants import PROGRESS_COLUMN_INDEX
+
+
+def create_title_sort_key(reverse: bool = False) -> tuple[Callable, bool]:
+    """Create a sort key function for sorting by title.
+
+    Returns:
+        Tuple of (sort_key_function, reverse_flag)
+    """
+    def title_key(row_values):
+        title_cell = row_values[0]
+        if isinstance(title_cell, str):
+            normalized = unicodedata.normalize('NFD', title_cell)
+            return normalized.encode('ascii', 'ignore').decode('ascii').lower()
+        return str(title_cell).lower()
+
+    return title_key, reverse
+
+
+def create_progress_sort_key(progress_column_index: int = PROGRESS_COLUMN_INDEX, reverse: bool = False) -> tuple[Callable, bool]:
+    """Create a sort key function for sorting by progress percentage.
+
+    Returns:
+        Tuple of (sort_key_function, reverse_flag)
+    """
+    def progress_key(row_values):
+        progress_cell = row_values[progress_column_index]
+        if isinstance(progress_cell, str):
+            try:
+                return float(progress_cell.rstrip("%"))
+            except (ValueError, AttributeError):
+                return 0.0
+        return 0.0
+
+    return progress_key, reverse