Simple web backend added with upload/status/process/download API

web/backend/services/__init__.py

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+"""Business logic services."""

web/backend/services/file_manager.py

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+"""Temporary file management for web operations."""
+
+import shutil
+from pathlib import Path
+
+from backend.config import settings
+
+
+class FileManager:
+    @staticmethod
+    def get_task_dir(task_id: str) -> Path:
+        return settings.temp_dir / task_id
+
+    @staticmethod
+    def get_input_path(task_id: str) -> Path:
+        task_dir = FileManager.get_task_dir(task_id)
+        for f in task_dir.iterdir():
+            if f.name.startswith("input."):
+                return f
+        return None
+
+    @staticmethod
+    def get_output_dir(task_id: str) -> Path:
+        return FileManager.get_task_dir(task_id) / "output"
+
+    @staticmethod
+    def ensure_output_dir(task_id: str) -> Path:
+        output_dir = FileManager.get_output_dir(task_id)
+        output_dir.mkdir(parents=True, exist_ok=True)
+        return output_dir
+
+    @staticmethod
+    def cleanup_task(task_id: str) -> None:
+        task_dir = FileManager.get_task_dir(task_id)
+        if task_dir.exists():
+            shutil.rmtree(task_dir, ignore_errors=True)
+
+    @staticmethod
+    def get_output_files(task_id: str) -> list:
+        output_dir = FileManager.get_output_dir(task_id)
+        if not output_dir.exists():
+            return []
+        files = []
+        for f in output_dir.iterdir():
+            if f.is_file():
+                files.append({"filename": f.name, "size": f.stat().st_size})
+        return files

web/backend/services/splitter.py

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+"""Splitter service that calls the core audio_splitter logic."""
+
+import os
+import sys
+import shutil
+from pathlib import Path
+from typing import List, Dict, Any
+
+from backend.config import settings
+from backend.services.task_manager import task_manager
+from backend.services.file_manager import FileManager
+from backend.models.request import TracklistEntry
+from backend.models.response import TaskStatus
+
+
+def run_split_task(task_id: str, tracklist: List[TracklistEntry], options: Dict[str, Any]) -> None:
+    try:
+        task_manager.update_task(task_id, progress=5, message="Initializing...")
+
+        input_path = FileManager.get_input_path(task_id)
+        if not input_path or not input_path.exists():
+            raise RuntimeError(f"Input file not found for task {task_id}")
+
+        output_dir = FileManager.ensure_output_dir(task_id)
+
+        tracks = []
+        for entry in tracklist:
+            track_dict = {
+                "ts": entry.ts,
+                "tn": entry.tn or "",
+                "an": entry.an or "",
+                "al": entry.al or "",
+                "date": entry.date or "",
+                "ext": entry.ext or ""
+            }
+            tracks.append(track_dict)
+
+        from types import SimpleNamespace
+
+        args = SimpleNamespace(
+            format=options.get("format", "mp3"),
+            transcode_to=options.get("transcode_to", None),
+            drop_video=options.get("drop_video", False),
+            drop_subs=options.get("drop_subs", False),
+            number_tracks=options.get("number_tracks", False),
+            replace_bad_chars=options.get("replace_bad_chars", False),
+            replacement_char=options.get("replacement_char", "_"),
+            bad_chars=options.get("bad_chars", r'!@#№$;:%^&?*(){}[]\/<>+=~`\' '),
+            skip_existing=options.get("skip_existing", False),
+            output_template=options.get("output_template", "%an-%tn.%ext"),
+            album=options.get("album", None),
+            comment=options.get("comment", None),
+            no_comment=options.get("no_comment", False),
+            comment_stream=options.get("comment_stream", None),
+            merge_comments=options.get("merge_comments", False),
+            comment_separator=options.get("comment_separator", "; "),
+            delete_original=False,
+        )
+
+        project_root = Path(__file__).parent.parent.parent.parent
+        if str(project_root) not in sys.path:
+            sys.path.insert(0, str(project_root))
+
+        from audio_splitter.core import split_audio
+
+        task_manager.update_task(task_id, progress=10, message="Starting split...")
+
+        split_audio(str(input_path), str(output_dir), tracks, args)
+
+        output_files = FileManager.get_output_files(task_id)
+
+        task_manager.update_task(
+            task_id,
+            status=TaskStatus.DONE,
+            progress=100,
+            message="Split complete",
+            tracks=output_files
+        )
+
+    except Exception as e:
+        task_manager.update_task(
+            task_id,
+            status=TaskStatus.ERROR,
+            error=str(e),
+            message="Split failed"
+        )

web/backend/services/task_manager.py

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+"""In-memory task state management."""
+
+from typing import Dict, Optional, List
+from datetime import datetime, timedelta
+import threading
+import time
+
+from backend.config import settings
+from backend.models.response import TaskStatus, TrackInfo
+
+
+class TaskManager:
+    def __init__(self):
+        self._tasks: Dict[str, dict] = {}
+        self._lock = threading.Lock()
+
+    def create_task(self, task_id: str, filename: str, file_size: int) -> None:
+        with self._lock:
+            self._tasks[task_id] = {
+                "task_id": task_id,
+                "filename": filename,
+                "file_size": file_size,
+                "status": TaskStatus.PENDING,
+                "progress": 0,
+                "message": "Upload complete",
+                "error": None,
+                "tracks": [],
+                "created_at": datetime.now(),
+                "updated_at": datetime.now()
+            }
+
+    def has_task(self, task_id: str) -> bool:
+        return task_id in self._tasks
+
+    def get_status(self, task_id: str) -> dict:
+        with self._lock:
+            return self._tasks.get(task_id, {}).copy()
+
+    def update_task(self, task_id: str, **kwargs) -> None:
+        with self._lock:
+            if task_id in self._tasks:
+                self._tasks[task_id].update(kwargs)
+                self._tasks[task_id]["updated_at"] = datetime.now()
+
+    def cleanup_old_tasks(self) -> None:
+        now = datetime.now()
+        timeout = timedelta(seconds=settings.cleanup_after_seconds)
+        with self._lock:
+            to_delete = []
+            for task_id, data in self._tasks.items():
+                if now - data["created_at"] > timeout:
+                    to_delete.append(task_id)
+            for task_id in to_delete:
+                self._delete_task_files(task_id)
+                del self._tasks[task_id]
+
+    def _delete_task_files(self, task_id: str) -> None:
+        import shutil
+        task_dir = settings.temp_dir / task_id
+        if task_dir.exists():
+            shutil.rmtree(task_dir, ignore_errors=True)
+
+
+task_manager = TaskManager()