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482 lines
28 KiB
482 lines
28 KiB
"""Post-processing worker for completed downloads.
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The verification workflow that runs AFTER a slskd transfer reports as
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'Succeeded' but BEFORE the task is marked completed in the UI. Locates
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the file on disk (with retries + multiple search strategies), routes
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it through metadata enhancement and the import pipeline, and finally
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calls the batch lifecycle completion callback.
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Lifted verbatim from web_server.py's `_run_post_processing_worker`.
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The single function is intentionally kept as one ~400-line block to
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preserve byte-for-byte parity with the original — refactoring into
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smaller helpers gets its own follow-up PR.
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Dependencies are passed in via `PostProcessDeps` since the function
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needs ~9 callbacks/refs and direct injection beats hidden imports.
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"""
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from __future__ import annotations
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import logging
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import os
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import time
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import traceback
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Any, Callable, Optional
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from core.imports.album_naming import resolve_album_group as _resolve_album_group
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from core.imports.context import (
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get_import_clean_album,
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get_import_clean_title,
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get_import_context_album,
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get_import_context_artist,
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get_import_original_search,
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normalize_import_context,
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)
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from core.imports.filename import extract_track_number_from_filename
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from core.metadata import enrichment as metadata_enrichment
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from core.runtime_state import (
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download_tasks,
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matched_context_lock,
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matched_downloads_context,
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tasks_lock,
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)
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logger = logging.getLogger(__name__)
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@dataclass
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class PostProcessDeps:
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"""Bundle of dependencies the post-processing worker needs.
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Constructed per-call by the route layer so client / config refs are
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always live (no caching of pre-init Spotify clients etc).
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"""
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config_manager: Any
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soulseek_client: Any
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run_async: Callable
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docker_resolve_path: Callable[[str], str]
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extract_filename: Callable[[str], str]
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make_context_key: Callable[[str, str], str]
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find_completed_file: Callable
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enhance_file_metadata: Callable
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wipe_source_tags: Callable[[str], bool]
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post_process_with_verification: Callable
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mark_task_completed: Callable[[str, Optional[dict]], None]
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on_download_completed: Callable[[str, str, bool], None]
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def run_post_processing_worker(task_id: str, batch_id: str, deps: PostProcessDeps) -> None:
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"""NEW VERIFICATION WORKFLOW: Post-processing worker that only sets 'completed'
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status after successful file verification and processing. This matches sync.py's
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reliability.
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"""
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try:
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logger.info(f"[Post-Processing] Starting verification for task {task_id}")
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# Retrieve task details from global state
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with tasks_lock:
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if task_id not in download_tasks:
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logger.warning(f"[Post-Processing] Task {task_id} not found in download_tasks")
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return
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task = download_tasks[task_id].copy()
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# Check if task was cancelled or already completed during post-processing
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if task['status'] == 'cancelled':
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logger.warning(f"[Post-Processing] Task {task_id} was cancelled, skipping verification")
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return
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if task['status'] == 'completed' or task.get('stream_processed'):
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logger.info(f"[Post-Processing] Task {task_id} already completed by stream processor, skipping verification")
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return
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# Extract file information for verification
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track_info = task.get('track_info', {})
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task_filename = task.get('filename') or track_info.get('filename')
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task_username = task.get('username') or track_info.get('username')
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if not task_filename or not task_username:
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logger.warning(f"[Post-Processing] Missing filename or username for task {task_id}")
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with tasks_lock:
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if task_id in download_tasks:
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download_tasks[task_id]['status'] = 'failed'
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download_tasks[task_id]['error_message'] = 'Post-processing failed: missing file or source information from Soulseek transfer'
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deps.on_download_completed(batch_id, task_id, False)
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return
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download_dir = deps.docker_resolve_path(deps.config_manager.get('soulseek.download_path', './downloads'))
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transfer_dir = deps.docker_resolve_path(deps.config_manager.get('soulseek.transfer_path', './Transfer'))
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# Try to get context for generating the correct final filename
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task_basename = deps.extract_filename(task_filename)
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context_key = deps.make_context_key(task_username, task_filename)
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expected_final_filename = None
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logger.info(f"[Post-Processing] Looking up context with key: {context_key}")
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with matched_context_lock:
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context = matched_downloads_context.get(context_key)
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# Debug: Show all available context keys
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available_keys = list(matched_downloads_context.keys())
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logger.info(f"[Post-Processing] Available context keys: {available_keys[:10]}...") # Show first 10 keys
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if context:
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logger.info(f"[Post-Processing] Found context for key: {context_key}")
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try:
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original_search = context.get("original_search_result", {})
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logger.info(f"[Post-Processing] original_search keys: {list(original_search.keys())}")
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clean_title = get_import_clean_title(context, default=original_search.get('title', ''))
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track_number = original_search.get('track_number')
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logger.info(f"[Post-Processing] clean_title: '{clean_title}', track_number: {track_number}")
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if clean_title and track_number:
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# Generate expected final filename that stream processor would create
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# Pattern: f"{track_number:02d} - {clean_title}.flac"
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sanitized_title = clean_title.replace('/', '_').replace('\\', '_').replace(':', '_').replace('*', '_').replace('?', '_').replace('"', '_').replace('<', '_').replace('>', '_').replace('|', '_')
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expected_final_filename = f"{track_number:02d} - {sanitized_title}.flac"
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logger.info(f"[Post-Processing] Generated expected final filename: {expected_final_filename}")
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else:
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logger.warning(f"[Post-Processing] Missing required data - clean_title: {bool(clean_title)}, track_number: {bool(track_number)}")
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except Exception as e:
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logger.error(f"[Post-Processing] Error generating expected filename: {e}")
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traceback.print_exc()
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else:
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logger.warning(f"[Post-Processing] No context found for key: {context_key}")
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# Try fuzzy matching with similar keys containing the filename
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# SAFETY: Constrain to same Soulseek username to prevent cross-album
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# metadata contamination during mass downloads (e.g., two albums both
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# having "01 - Intro.flac" would match the wrong context without this)
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with matched_context_lock:
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similar_keys = [k for k in matched_downloads_context.keys()
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if k.startswith(f"{task_username}::") and task_basename in k]
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if similar_keys:
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# Use the first similar key found
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fuzzy_key = similar_keys[0]
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context = matched_downloads_context.get(fuzzy_key)
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logger.info(f"[Post-Processing] Found context using fuzzy key matching: {fuzzy_key}")
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# Generate expected final filename using the found context
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try:
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original_search = context.get("original_search_result", {})
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logger.info(f"[Post-Processing] fuzzy context original_search keys: {list(original_search.keys())}")
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clean_title = get_import_clean_title(context, default=original_search.get('title', ''))
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track_number = original_search.get('track_number')
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logger.info(f"[Post-Processing] fuzzy context clean_title: '{clean_title}', track_number: {track_number}")
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if clean_title and track_number:
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# Generate expected final filename that stream processor would create
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# Pattern: f"{track_number:02d} - {clean_title}.flac"
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sanitized_title = clean_title.replace('/', '_').replace('\\', '_').replace(':', '_').replace('*', '_').replace('?', '_').replace('"', '_').replace('<', '_').replace('>', '_').replace('|', '_')
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expected_final_filename = f"{track_number:02d} - {sanitized_title}.flac"
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logger.info(f"[Post-Processing] Generated expected final filename from fuzzy match: {expected_final_filename}")
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else:
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logger.warning(f"[Post-Processing] Missing required data from fuzzy match - clean_title: {bool(clean_title)}, track_number: {bool(track_number)}")
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except Exception as e:
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logger.error(f"[Post-Processing] Error generating expected filename from fuzzy match: {e}")
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traceback.print_exc()
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else:
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logger.warning(f"[Post-Processing] No similar keys found containing '{task_basename}'")
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# Show a sample of what keys actually exist for debugging
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sample_keys = list(matched_downloads_context.keys())[:5]
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logger.info(f"[Post-Processing] Sample of existing keys: {sample_keys}")
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# RESILIENT FILE-FINDING LOOP: Try up to 3 times with delays
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found_file = None
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file_location = None
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# CRITICAL FIX: For YouTube downloads, the filename in task is 'id||title' (metadata),
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# but the actual file on disk is 'Title.mp3'. We must ask the client for the real path.
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if (task.get('username') == 'youtube' or '||' in str(task_filename)) and not found_file:
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logger.info(f"[Post-Processing] Detected YouTube download task: {task_id}")
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try:
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# Query the download orchestrator for the status which contains the real file path
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# CRITICAL FIX: Use the actual download_id designated by the client, not the internal task_id
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actual_download_id = task.get('download_id') or task_id
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status = deps.run_async(deps.soulseek_client.get_download_status(actual_download_id))
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if status and status.file_path:
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real_path = status.file_path
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if os.path.exists(real_path):
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# Determine if it's in download or transfer directory
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real_path_obj = Path(real_path)
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download_dir_obj = Path(download_dir)
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transfer_dir_obj = Path(transfer_dir)
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# Use absolute path comparison
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try:
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if download_dir_obj.resolve() in real_path_obj.resolve().parents:
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file_location = 'download'
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elif transfer_dir_obj.resolve() in real_path_obj.resolve().parents:
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file_location = 'transfer'
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else:
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file_location = 'absolute'
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except: # noqa: E722 -- byte-faithful to original (catches even KeyboardInterrupt)
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# Fallback if resolve fails (e.g. permission or path issues)
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file_location = 'absolute'
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if file_location:
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# We found the file! Use the absolute path if it confuses the joining logic,
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# but usually we want just the filename if location is 'download'/'transfer'
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# CRITICAL FIX: Always use the absolute real_path.
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# Stripping to basename causes FileNotFoundError because post-processing
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# runs with CWD as project root, not download dir.
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found_file = real_path
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logger.info(f"[Post-Processing] Resolved actual YouTube filename: {found_file} (Location: {file_location})")
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else:
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logger.warning(f"[Post-Processing] YouTube status reported path but file missing: {real_path}")
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else:
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logger.warning(f"[Post-Processing] YouTube status returned no file_path for task {task_id}")
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except Exception as e:
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logger.error(f"[Post-Processing] Failed to retrieve YouTube task status: {e}")
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_file_search_max_retries = 5
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for retry_count in range(_file_search_max_retries):
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# If we already resolved the file (e.g. via YouTube status), skip searching
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if found_file:
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logger.info(f"[Post-Processing] Skipping search loop, file already resolved: {found_file}")
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break
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# Check if stream processor already completed this task while we were waiting
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with tasks_lock:
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if task_id in download_tasks:
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if download_tasks[task_id].get('stream_processed') or download_tasks[task_id]['status'] == 'completed':
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logger.info(f"[Post-Processing] Task {task_id} was completed by stream processor during file search - done")
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return
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logger.warning(f"[Post-Processing] Attempt {retry_count + 1}/{_file_search_max_retries} to find file")
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logger.info(f"[Post-Processing] Original filename: {task_basename}")
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if expected_final_filename:
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logger.info(f"[Post-Processing] Expected final filename: {expected_final_filename}")
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else:
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logger.warning("[Post-Processing] No expected final filename available")
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# Strategy 1: Try with original filename in both downloads and transfer
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logger.info("[Post-Processing] Strategy 1: Searching with original filename...")
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found_file, file_location = deps.find_completed_file(download_dir, task_filename, transfer_dir)
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if found_file:
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logger.info(f"[Post-Processing] Strategy 1 SUCCESS: Found file with original filename in {file_location}: {found_file}")
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else:
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logger.error("[Post-Processing] Strategy 1 FAILED: Original filename not found in either location")
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# Strategy 2: If not found and we have an expected final filename, try that in transfer folder
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if not found_file and expected_final_filename:
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logger.info("[Post-Processing] Strategy 2: Searching transfer folder with expected final filename...")
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found_result = deps.find_completed_file(transfer_dir, expected_final_filename)
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if found_result and found_result[0]:
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found_file, file_location = found_result[0], 'transfer'
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logger.info(f"[Post-Processing] Strategy 2 SUCCESS: Found file with expected final filename: {found_file}")
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else:
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logger.error("[Post-Processing] Strategy 2 FAILED: Expected final filename not found in transfer folder")
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elif not expected_final_filename:
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logger.warning("[Post-Processing] Strategy 2 SKIPPED: No expected final filename available")
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if found_file:
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logger.warning(f"[Post-Processing] FILE FOUND after {retry_count + 1} attempts in {file_location}: {found_file}")
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break
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else:
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logger.error(f"[Post-Processing] All search strategies failed on attempt {retry_count + 1}/{_file_search_max_retries}")
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if retry_count < _file_search_max_retries - 1: # Don't sleep on final attempt
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logger.info("[Post-Processing] Waiting 5 seconds before next attempt...")
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time.sleep(5)
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if not found_file:
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# CRITICAL: Before marking as failed, check if stream processor already handled this
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# The /api/downloads/status polling endpoint processes files independently and may have
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# already moved/renamed/tagged the file successfully while we were searching
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with tasks_lock:
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if task_id in download_tasks:
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if download_tasks[task_id].get('stream_processed') or download_tasks[task_id]['status'] == 'completed':
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logger.error(f"[Post-Processing] Task {task_id} was completed by stream processor - not marking as failed")
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return
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download_tasks[task_id]['status'] = 'failed'
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download_tasks[task_id]['error_message'] = f'File not found on disk after {_file_search_max_retries} search attempts. Expected: {os.path.basename(task_filename)}'
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deps.on_download_completed(batch_id, task_id, False)
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return
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# Handle file found in transfer folder - already completed by stream processor
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if file_location == 'transfer':
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logger.info(f"[Post-Processing] File found in transfer folder - already completed by stream processor: {found_file}")
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# Check if metadata enhancement was completed
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metadata_enhanced = False
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with tasks_lock:
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if task_id in download_tasks:
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metadata_enhanced = download_tasks[task_id].get('metadata_enhanced', False)
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if not metadata_enhanced:
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logger.warning("[Post-Processing] File in transfer folder missing metadata enhancement - completing now")
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# Attempt to complete metadata enhancement using context
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if context and expected_final_filename:
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try:
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context = normalize_import_context(context)
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# Extract required data from context
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original_search = get_import_original_search(context)
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artist_context = get_import_context_artist(context)
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album_context = get_import_context_album(context)
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if artist_context and album_context:
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# CRITICAL FIX: Create album_info dict with proper structure for metadata enhancement
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# This must match the format used in main stream processor to ensure consistency
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# Extract track number from context (should be available from fuzzy match)
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track_number = original_search.get('track_number', 1)
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# If no track number in context, extract from filename
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if track_number == 1 and found_file:
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track_number = extract_track_number_from_filename(found_file)
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logger.warning(
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"[Verification] missing track_number; extracted from filename=%r -> %s",
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os.path.basename(found_file),
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track_number,
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)
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# Ensure track_number is valid
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if not isinstance(track_number, int) or track_number < 1:
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logger.error(f"[Verification] Invalid track number ({track_number}), defaulting to 1")
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track_number = 1
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# Get clean track name
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clean_track_name = get_import_clean_title(context, default=original_search.get('title', 'Unknown Track'))
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album_name = get_import_clean_album(context, default=album_context.get('name', 'Unknown Album'))
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album_image_url = album_context.get('image_url')
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if not album_image_url and album_context.get('images'):
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album_images = album_context.get('images', [])
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if album_images and isinstance(album_images[0], dict):
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album_image_url = album_images[0].get('url')
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album_info = {
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'is_album': True, # CRITICAL: Mark as album track
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'album_name': album_name,
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'track_number': track_number, # CORRECTED TRACK NUMBER
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'disc_number': original_search.get('disc_number', 1),
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'clean_track_name': clean_track_name,
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'album_image_url': album_image_url,
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'confidence': 0.9,
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'source': 'verification_worker_corrected',
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}
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# Apply album grouping for consistency with stream processor path.
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# Only for singles/auto-detected — explicit album downloads already
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# have the correct Spotify name and re-grouping would mangle it.
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if not context.get("is_album_download", False):
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try:
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raw_album_ctx = original_search.get('album')
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if isinstance(raw_album_ctx, str):
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original_album_ctx = raw_album_ctx
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elif isinstance(raw_album_ctx, dict) and 'name' in raw_album_ctx:
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original_album_ctx = raw_album_ctx['name']
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else:
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original_album_ctx = None
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consistent_album_name = _resolve_album_group(artist_context, album_info, original_album_ctx)
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album_info['album_name'] = consistent_album_name
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except Exception as group_err:
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logger.error(f"[Verification] Album grouping failed, using raw name: {group_err}")
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else:
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logger.info(f"[Verification] Explicit album download - preserving album name: '{album_info['album_name']}'")
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logger.info(f"[Verification] Created proper album_info - track_number: {track_number}, album: {album_info['album_name']}")
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logger.info(f"[Post-Processing] Attempting metadata enhancement for: {found_file}")
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logger.warning(f"[Metadata Input] Verification worker - artist: '{artist_context.get('name', 'MISSING')}' (id: {artist_context.get('id', 'MISSING')})")
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logger.warning(f"[Metadata Input] Verification worker - album: '{album_info.get('album_name', 'MISSING')}', track#: {album_info.get('track_number', 'MISSING')}, source: {album_info.get('source', 'unknown')}")
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enhancement_success = deps.enhance_file_metadata(found_file, context, artist_context, album_info)
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if enhancement_success:
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with tasks_lock:
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if task_id in download_tasks:
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download_tasks[task_id]['metadata_enhanced'] = True
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logger.info(f"[Post-Processing] Successfully completed metadata enhancement for: {os.path.basename(found_file)}")
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else:
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logger.info(f"[Post-Processing] Metadata enhancement returned False for: {os.path.basename(found_file)}")
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else:
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logger.warning("[Post-Processing] Missing artist or album in context")
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logger.info(f"[Post-Processing] artist_context: {artist_context is not None}, album_context: {album_context is not None}")
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# Wipe source tags even without full enhancement — prevents
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# Soulseek uploader's MusicBrainz IDs from causing album splits
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if found_file and os.path.exists(found_file):
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deps.wipe_source_tags(found_file)
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except Exception as enhancement_error:
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logger.error(f"[Post-Processing] Error during metadata enhancement: {enhancement_error}\n{traceback.format_exc()}")
|
|
if found_file and os.path.exists(found_file):
|
|
deps.wipe_source_tags(found_file)
|
|
else:
|
|
logger.warning("[Post-Processing] Cannot complete metadata enhancement - missing context or expected filename")
|
|
if found_file and os.path.exists(found_file):
|
|
deps.wipe_source_tags(found_file)
|
|
else:
|
|
logger.info("[Post-Processing] File already has metadata enhancement completed")
|
|
|
|
with tasks_lock:
|
|
if task_id in download_tasks:
|
|
track_info = download_tasks[task_id].get('track_info')
|
|
deps.mark_task_completed(task_id, track_info)
|
|
|
|
# Clean up context now that both stream processor and verification worker are done
|
|
with matched_context_lock:
|
|
if context_key in matched_downloads_context:
|
|
del matched_downloads_context[context_key]
|
|
logger.info(f"[Verification] Cleaned up context after successful verification: {context_key}")
|
|
|
|
deps.on_download_completed(batch_id, task_id, True)
|
|
return
|
|
|
|
# File found in downloads folder - attempt post-processing
|
|
try:
|
|
# Rebuild the context key using the same function that stored it
|
|
context_key = deps.make_context_key(task_username, task_filename)
|
|
|
|
# Check if this download has matched context for post-processing
|
|
with matched_context_lock:
|
|
context = matched_downloads_context.get(context_key)
|
|
|
|
if context:
|
|
logger.info(f"[Post-Processing] Found matched context, running full post-processing for: {context_key}")
|
|
# Run the existing post-processing logic with verification
|
|
deps.post_process_with_verification(context_key, context, found_file, task_id, batch_id)
|
|
else:
|
|
# No matched context - just mark as completed since file exists
|
|
logger.warning(f"[Post-Processing] No matched context, marking as completed: {os.path.basename(found_file)}")
|
|
with tasks_lock:
|
|
if task_id in download_tasks:
|
|
track_info = download_tasks[task_id].get('track_info')
|
|
deps.mark_task_completed(task_id, track_info)
|
|
|
|
# Clean up context if it exists (might be leftover from stream processor)
|
|
with matched_context_lock:
|
|
if context_key in matched_downloads_context:
|
|
del matched_downloads_context[context_key]
|
|
logger.info(f"[Verification] Cleaned up leftover context: {context_key}")
|
|
|
|
# Call completion callback since there's no other post-processing to handle it
|
|
deps.on_download_completed(batch_id, task_id, True)
|
|
|
|
except Exception as processing_error:
|
|
logger.error(f"[Post-Processing] Processing failed for task {task_id}: {processing_error}")
|
|
with tasks_lock:
|
|
if task_id in download_tasks:
|
|
download_tasks[task_id]['status'] = 'failed'
|
|
download_tasks[task_id]['error_message'] = f"Post-processing failed: {str(processing_error)}"
|
|
deps.on_download_completed(batch_id, task_id, False)
|
|
|
|
except Exception as e:
|
|
logger.error(f"[Post-Processing] Critical error in post-processing worker for task {task_id}: {e}")
|
|
with tasks_lock:
|
|
if task_id in download_tasks:
|
|
download_tasks[task_id]['status'] = 'failed'
|
|
download_tasks[task_id]['error_message'] = f"Critical post-processing error: {str(e)}"
|
|
deps.on_download_completed(batch_id, task_id, False)
|
|
|
|
|
|
# Re-export the metadata helper so callers can wrap it in a callback without
|
|
# importing from core.metadata directly.
|
|
__all__ = [
|
|
'PostProcessDeps',
|
|
'run_post_processing_worker',
|
|
'metadata_enrichment',
|
|
]
|