734 lines
29 KiB
Python
734 lines
29 KiB
Python
import os
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import requests
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import threading
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import time
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import tkinter as tk
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from tkinter import ttk, messagebox
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from typing import Optional, Dict, Any, List, Callable
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from dataclasses import dataclass
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from enum import Enum
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import json
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from datetime import datetime
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import queue
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class DownloadStatus(Enum):
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"""Download status enumeration."""
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QUEUED = "Queued"
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DOWNLOADING = "Downloading"
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PAUSED = "Paused"
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COMPLETED = "Completed"
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FAILED = "Failed"
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CANCELLED = "Cancelled"
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AUTH_REQUIRED = "Auth Required"
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@dataclass
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class DownloadItem:
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"""Represents a download item."""
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id: str
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repo_id: str
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filename: str
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url: str
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save_path: str
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total_size: int = 0
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downloaded_size: int = 0
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status: DownloadStatus = DownloadStatus.QUEUED
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error_message: str = ""
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start_time: Optional[float] = None
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end_time: Optional[float] = None
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speed: float = 0.0
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eta: int = 0
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headers: Dict[str, str] = None
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resume_position: int = 0
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def __post_init__(self):
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if self.headers is None:
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self.headers = {}
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@property
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def progress(self) -> float:
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"""Calculate download progress percentage."""
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if self.total_size > 0:
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return (self.downloaded_size / self.total_size) * 100
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return 0.0
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@property
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def is_resumable(self) -> bool:
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"""Check if download can be resumed."""
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return self.status in [DownloadStatus.PAUSED, DownloadStatus.FAILED]
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class DownloadManager:
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"""Manages multiple downloads with pause/resume support."""
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def __init__(self, max_concurrent: int = 3):
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self.downloads: Dict[str, DownloadItem] = {}
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self.download_queue: queue.Queue = queue.Queue()
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self.active_downloads: Dict[str, threading.Thread] = {}
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self.max_concurrent = max_concurrent
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self.callbacks: Dict[str, List[Callable]] = {
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'on_progress': [],
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'on_status_change': [],
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'on_complete': [],
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'on_error': [],
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'on_remove': []
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}
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self._stop_flags: Dict[str, threading.Event] = {}
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self._pause_flags: Dict[str, threading.Event] = {}
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self._worker_thread = threading.Thread(target=self._process_queue, daemon=True)
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self._worker_thread.start()
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def add_download(self, repo_id: str, filename: str, url: str, save_path: str,
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headers: Optional[Dict[str, str]] = None) -> str:
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"""Add a new download to the queue."""
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download_id = f"{repo_id}_{filename}_{int(time.time())}"
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# Create download item
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item = DownloadItem(
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id=download_id,
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repo_id=repo_id,
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filename=filename,
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url=url,
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save_path=save_path,
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headers=headers or {}
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)
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self.downloads[download_id] = item
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self.download_queue.put(download_id)
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self._trigger_callback('on_status_change', item)
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return download_id
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def pause_download(self, download_id: str):
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"""Pause a download."""
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if download_id in self._pause_flags:
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self._pause_flags[download_id].set()
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if download_id in self.downloads:
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self.downloads[download_id].status = DownloadStatus.PAUSED
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self._trigger_callback('on_status_change', self.downloads[download_id])
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def resume_download(self, download_id: str):
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"""Resume a paused download."""
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item = self.downloads.get(download_id)
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if item and item.is_resumable:
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item.status = DownloadStatus.QUEUED
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item.resume_position = item.downloaded_size
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self.download_queue.put(download_id)
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self._trigger_callback('on_status_change', item)
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def cancel_download(self, download_id: str):
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"""Cancel a download."""
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if download_id in self._stop_flags:
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self._stop_flags[download_id].set()
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if download_id in self.downloads:
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item = self.downloads[download_id]
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item.status = DownloadStatus.CANCELLED
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self._trigger_callback('on_status_change', item)
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# Remove partial file
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if os.path.exists(item.save_path):
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try:
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os.remove(item.save_path)
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except Exception:
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pass
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# Auto-remove cancelled download after a short delay
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def auto_remove():
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time.sleep(2) # Wait 2 seconds
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self.remove_download(download_id)
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threading.Thread(target=auto_remove, daemon=True).start()
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def remove_download(self, download_id: str):
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"""Remove a specific download from the list."""
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if download_id in self.downloads:
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# Cancel if still active
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if download_id in self._stop_flags:
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self._stop_flags[download_id].set()
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# Remove from downloads
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item = self.downloads[download_id]
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del self.downloads[download_id]
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self._trigger_callback('on_remove', item)
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def retry_download(self, download_id: str):
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"""Retry a failed download."""
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item = self.downloads.get(download_id)
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if item and item.status in [DownloadStatus.FAILED, DownloadStatus.AUTH_REQUIRED]:
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item.status = DownloadStatus.QUEUED
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item.downloaded_size = 0
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item.resume_position = 0
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item.error_message = ""
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self.download_queue.put(download_id)
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self._trigger_callback('on_status_change', item)
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def _process_queue(self):
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"""Process download queue."""
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while True:
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# Check if we can start more downloads
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if len(self.active_downloads) < self.max_concurrent:
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try:
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download_id = self.download_queue.get(timeout=1)
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if download_id in self.downloads:
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thread = threading.Thread(
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target=self._download_file,
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args=(download_id,),
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daemon=True
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)
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self.active_downloads[download_id] = thread
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thread.start()
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except queue.Empty:
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pass
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# Clean up finished downloads
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finished = []
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for download_id, thread in self.active_downloads.items():
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if not thread.is_alive():
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finished.append(download_id)
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for download_id in finished:
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del self.active_downloads[download_id]
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time.sleep(0.5)
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def _download_file(self, download_id: str):
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"""Download a file with resume support."""
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item = self.downloads[download_id]
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# Create flags for this download
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self._stop_flags[download_id] = threading.Event()
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self._pause_flags[download_id] = threading.Event()
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try:
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# Update status
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item.status = DownloadStatus.DOWNLOADING
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item.start_time = time.time()
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self._trigger_callback('on_status_change', item)
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# Create directory if needed
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os.makedirs(os.path.dirname(item.save_path), exist_ok=True)
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# Setup headers for resume
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headers = item.headers.copy()
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if item.resume_position > 0:
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headers['Range'] = f'bytes={item.resume_position}-'
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# Make request
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response = requests.get(item.url, headers=headers, stream=True, timeout=30)
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# Check for authentication issues
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if response.status_code == 401 or response.status_code == 403:
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item.status = DownloadStatus.AUTH_REQUIRED
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item.error_message = f"Authentication failed: {response.status_code}"
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self._trigger_callback('on_error', item)
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return
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response.raise_for_status()
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# Get total size
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if item.resume_position == 0:
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item.total_size = int(response.headers.get('content-length', 0))
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# Open file for writing (append if resuming)
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mode = 'ab' if item.resume_position > 0 else 'wb'
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# Optimize chunk size based on file size and storage type
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base_chunk_size = 1024 * 1024 # 1MB base chunk
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if item.total_size > 100 * 1024 * 1024: # Files > 100MB
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chunk_size = base_chunk_size * 4 # 4MB chunks
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elif item.total_size > 10 * 1024 * 1024: # Files > 10MB
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chunk_size = base_chunk_size * 2 # 2MB chunks
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else:
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chunk_size = base_chunk_size # 1MB chunks
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# Use buffered writing for better performance
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buffer_size = chunk_size * 8 # 8x chunk size buffer
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with open(item.save_path, mode, buffering=buffer_size) as f:
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last_update = time.time()
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bytes_since_update = 0
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update_interval = 0.5 # Update UI every 0.5 seconds
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for chunk in response.iter_content(chunk_size=chunk_size):
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# Check stop flag
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if self._stop_flags[download_id].is_set():
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return
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# Check pause flag
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if self._pause_flags[download_id].is_set():
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item.status = DownloadStatus.PAUSED
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self._trigger_callback('on_status_change', item)
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return
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if chunk:
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f.write(chunk)
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item.downloaded_size += len(chunk)
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bytes_since_update += len(chunk)
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# Calculate speed and ETA (less frequent updates for performance)
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current_time = time.time()
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time_diff = current_time - last_update
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if time_diff >= update_interval:
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item.speed = bytes_since_update / time_diff
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if item.speed > 0 and item.total_size > item.downloaded_size:
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remaining = item.total_size - item.downloaded_size
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item.eta = int(remaining / item.speed)
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self._trigger_callback('on_progress', item)
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last_update = current_time
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bytes_since_update = 0
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# Force flush for USB drives
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f.flush()
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os.fsync(f.fileno())
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# Download completed
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item.status = DownloadStatus.COMPLETED
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item.end_time = time.time()
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self._trigger_callback('on_complete', item)
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except requests.exceptions.RequestException as e:
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item.status = DownloadStatus.FAILED
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item.error_message = str(e)
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self._trigger_callback('on_error', item)
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except Exception as e:
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item.status = DownloadStatus.FAILED
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item.error_message = f"Unexpected error: {e}"
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self._trigger_callback('on_error', item)
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finally:
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# Clean up flags
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if download_id in self._stop_flags:
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del self._stop_flags[download_id]
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if download_id in self._pause_flags:
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del self._pause_flags[download_id]
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self._trigger_callback('on_status_change', item)
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def register_callback(self, event: str, callback: Callable):
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"""Register a callback for download events."""
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if event in self.callbacks:
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self.callbacks[event].append(callback)
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def _trigger_callback(self, event: str, item: DownloadItem):
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"""Trigger callbacks for an event."""
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for callback in self.callbacks.get(event, []):
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try:
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callback(item)
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except Exception as e:
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print(f"Callback error: {e}")
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def get_all_downloads(self) -> List[DownloadItem]:
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"""Get all download items."""
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return list(self.downloads.values())
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def clear_completed(self):
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"""Clear completed downloads from the list."""
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to_remove = []
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for download_id, item in self.downloads.items():
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if item.status in [DownloadStatus.COMPLETED, DownloadStatus.CANCELLED]:
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to_remove.append(download_id)
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for download_id in to_remove:
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self.remove_download(download_id)
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class DownloadManagerTab:
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"""Download Manager GUI tab with improved real-time updates."""
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def __init__(self, parent: ttk.Frame, download_manager: DownloadManager):
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self.parent = parent
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self.manager = download_manager
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self.item_widgets: Dict[str, Dict[str, Any]] = {}
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# Register callbacks
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self.manager.register_callback('on_progress', self._on_progress)
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self.manager.register_callback('on_status_change', self._on_status_change)
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self.manager.register_callback('on_complete', self._on_complete)
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self.manager.register_callback('on_error', self._on_error)
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self.manager.register_callback('on_remove', self._on_remove)
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self._build_ui()
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# Start update timer with shorter interval for real-time updates
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self._update_display()
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def _build_ui(self):
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"""Build the download manager UI."""
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# Top controls with better layout
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controls_frame = ttk.Frame(self.parent)
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controls_frame.pack(fill=tk.X, padx=10, pady=5)
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# Left side controls
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left_controls = ttk.Frame(controls_frame)
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left_controls.pack(side=tk.LEFT)
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ttk.Button(left_controls, text="Clear Completed",
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command=self._clear_completed).pack(side=tk.LEFT, padx=2)
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ttk.Button(left_controls, text="Pause All",
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command=self._pause_all).pack(side=tk.LEFT, padx=2)
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ttk.Button(left_controls, text="Resume All",
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command=self._resume_all).pack(side=tk.LEFT, padx=2)
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ttk.Button(left_controls, text="Refresh",
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command=self._refresh_list).pack(side=tk.LEFT, padx=2)
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ttk.Button(left_controls, text="Remove Selected",
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command=self._remove_selected).pack(side=tk.LEFT, padx=2)
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# Right side status
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right_controls = ttk.Frame(controls_frame)
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right_controls.pack(side=tk.RIGHT)
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self.status_label = ttk.Label(right_controls, text="Downloads: 0 active, 0 queued")
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self.status_label.pack(side=tk.RIGHT)
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# Main downloads area using Treeview for better layout
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main_frame = ttk.Frame(self.parent)
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main_frame.pack(fill=tk.BOTH, expand=True, padx=10, pady=5)
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# Create treeview for downloads
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columns = ("repo", "file", "status", "progress", "size", "speed", "eta")
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self.tree = ttk.Treeview(main_frame, columns=columns, show="headings", height=15)
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# Configure columns
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self.tree.heading("repo", text="Repository")
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self.tree.heading("file", text="File")
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self.tree.heading("status", text="Status")
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self.tree.heading("progress", text="Progress")
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self.tree.heading("size", text="Size")
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self.tree.heading("speed", text="Speed")
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self.tree.heading("eta", text="ETA")
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self.tree.column("repo", width=200)
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self.tree.column("file", width=250)
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self.tree.column("status", width=100)
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self.tree.column("progress", width=100)
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self.tree.column("size", width=100)
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self.tree.column("speed", width=100)
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self.tree.column("eta", width=80)
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# Scrollbars for treeview
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v_scrollbar = ttk.Scrollbar(main_frame, orient="vertical", command=self.tree.yview)
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h_scrollbar = ttk.Scrollbar(main_frame, orient="horizontal", command=self.tree.xview)
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self.tree.configure(yscrollcommand=v_scrollbar.set, xscrollcommand=h_scrollbar.set)
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# Grid layout
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self.tree.grid(row=0, column=0, sticky="nsew")
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v_scrollbar.grid(row=0, column=1, sticky="ns")
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h_scrollbar.grid(row=1, column=0, sticky="ew")
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main_frame.grid_rowconfigure(0, weight=1)
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main_frame.grid_columnconfigure(0, weight=1)
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# Context menu for downloads
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self.context_menu = tk.Menu(self.tree, tearoff=0)
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self.context_menu.add_command(label="Pause", command=self._context_pause)
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self.context_menu.add_command(label="Resume", command=self._context_resume)
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self.context_menu.add_command(label="Cancel", command=self._context_cancel)
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self.context_menu.add_command(label="Retry", command=self._context_retry)
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self.context_menu.add_separator()
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self.context_menu.add_command(label="Remove", command=self._context_remove)
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self.context_menu.add_command(label="Open Folder", command=self._context_open_folder)
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self.tree.bind("<Button-3>", self._show_context_menu)
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# Details frame for selected download
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details_frame = ttk.LabelFrame(self.parent, text="Download Details", padding=5)
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details_frame.pack(fill=tk.X, padx=10, pady=5)
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self.details_text = tk.Text(details_frame, height=3, wrap=tk.WORD)
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self.details_text.pack(fill=tk.X)
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self.tree.bind("<<TreeviewSelect>>", self._on_selection_change)
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|
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def add_download_item(self, item: DownloadItem):
|
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"""Add a download item to the treeview."""
|
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if item.id in self.item_widgets:
|
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return
|
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|
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# Insert into treeview
|
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tree_id = self.tree.insert("", tk.END, values=(
|
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item.repo_id,
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item.filename,
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item.status.value,
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f"{item.progress:.1f}%",
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self._format_size(item.total_size) if item.total_size > 0 else "-",
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"-",
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"-"
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))
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|
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# Store mapping
|
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self.item_widgets[item.id] = {
|
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'tree_id': tree_id,
|
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'item': item
|
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}
|
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|
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# Initial update
|
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self._update_download_item(item)
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|
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def _update_download_item(self, item: DownloadItem):
|
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"""Update a download item in the treeview."""
|
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if item.id not in self.item_widgets:
|
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self.add_download_item(item)
|
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return
|
|
|
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tree_id = self.item_widgets[item.id]['tree_id']
|
|
|
|
# Check if tree item still exists
|
|
if not self.tree.exists(tree_id):
|
|
# Tree item was deleted, remove from our tracking
|
|
del self.item_widgets[item.id]
|
|
return
|
|
|
|
# Update size display
|
|
if item.total_size > 0:
|
|
size_text = f"{self._format_size(item.downloaded_size)} / {self._format_size(item.total_size)}"
|
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else:
|
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size_text = self._format_size(item.downloaded_size)
|
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|
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# Update speed display
|
|
speed_text = f"{self._format_size(item.speed)}/s" if item.speed > 0 else "-"
|
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|
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# Update ETA display
|
|
eta_text = self._format_time(item.eta) if item.eta > 0 else "-"
|
|
|
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try:
|
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# Update treeview row
|
|
self.tree.item(tree_id, values=(
|
|
item.repo_id,
|
|
item.filename,
|
|
item.status.value,
|
|
f"{item.progress:.1f}%",
|
|
size_text,
|
|
speed_text,
|
|
eta_text
|
|
))
|
|
|
|
# Update row color based on status
|
|
if item.status == DownloadStatus.COMPLETED:
|
|
self.tree.item(tree_id, tags=("completed",))
|
|
elif item.status == DownloadStatus.FAILED:
|
|
self.tree.item(tree_id, tags=("failed",))
|
|
elif item.status == DownloadStatus.DOWNLOADING:
|
|
self.tree.item(tree_id, tags=("downloading",))
|
|
else:
|
|
self.tree.item(tree_id, tags=())
|
|
|
|
# Configure tag colors
|
|
self.tree.tag_configure("completed", background="#d4edda")
|
|
self.tree.tag_configure("failed", background="#f8d7da")
|
|
self.tree.tag_configure("downloading", background="#d1ecf1")
|
|
|
|
except tk.TclError:
|
|
# Tree item no longer exists
|
|
if item.id in self.item_widgets:
|
|
del self.item_widgets[item.id]
|
|
|
|
def _format_size(self, bytes_size: float) -> str:
|
|
"""Format bytes to human readable size."""
|
|
for unit in ['B', 'KB', 'MB', 'GB', 'TB']:
|
|
if bytes_size < 1024.0:
|
|
return f"{bytes_size:.1f} {unit}"
|
|
bytes_size /= 1024.0
|
|
return f"{bytes_size:.1f} PB"
|
|
|
|
def _format_time(self, seconds: int) -> str:
|
|
"""Format seconds to human readable time."""
|
|
if seconds < 60:
|
|
return f"{seconds}s"
|
|
elif seconds < 3600:
|
|
minutes = seconds // 60
|
|
secs = seconds % 60
|
|
return f"{minutes}m {secs}s"
|
|
else:
|
|
hours = seconds // 3600
|
|
minutes = (seconds % 3600) // 60
|
|
return f"{hours}h {minutes}m"
|
|
|
|
def _show_context_menu(self, event):
|
|
"""Show context menu for downloads."""
|
|
item = self.tree.selection()[0] if self.tree.selection() else None
|
|
if item:
|
|
self.context_menu.post(event.x_root, event.y_root)
|
|
|
|
def _get_selected_download_id(self):
|
|
"""Get the download ID of the selected item."""
|
|
selection = self.tree.selection()
|
|
if not selection:
|
|
return None
|
|
|
|
tree_id = selection[0]
|
|
for download_id, data in self.item_widgets.items():
|
|
if data['tree_id'] == tree_id:
|
|
return download_id
|
|
return None
|
|
|
|
def _context_pause(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.pause_download(download_id)
|
|
|
|
def _context_resume(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.resume_download(download_id)
|
|
|
|
def _context_cancel(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.cancel_download(download_id)
|
|
|
|
def _context_retry(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.retry_download(download_id)
|
|
|
|
def _context_remove(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.remove_download(download_id)
|
|
|
|
def _context_open_folder(self):
|
|
download_id = self._get_selected_download_id()
|
|
if download_id and download_id in self.manager.downloads:
|
|
item = self.manager.downloads[download_id]
|
|
folder = os.path.dirname(item.save_path)
|
|
if os.path.exists(folder):
|
|
import subprocess
|
|
import platform
|
|
if platform.system() == "Windows":
|
|
subprocess.run(["explorer", folder])
|
|
elif platform.system() == "Darwin":
|
|
subprocess.run(["open", folder])
|
|
else:
|
|
subprocess.run(["xdg-open", folder])
|
|
|
|
def _refresh_list(self):
|
|
"""Refresh the download list display."""
|
|
# Clear all items
|
|
for item_id in self.tree.get_children():
|
|
self.tree.delete(item_id)
|
|
|
|
# Clear widget mapping
|
|
self.item_widgets.clear()
|
|
|
|
# Re-add all downloads
|
|
for item in self.manager.get_all_downloads():
|
|
self.add_download_item(item)
|
|
|
|
def _remove_selected(self):
|
|
"""Remove the selected download."""
|
|
download_id = self._get_selected_download_id()
|
|
if download_id:
|
|
self.manager.remove_download(download_id)
|
|
|
|
def _on_selection_change(self, event):
|
|
"""Handle selection change in treeview."""
|
|
download_id = self._get_selected_download_id()
|
|
if download_id and download_id in self.manager.downloads:
|
|
item = self.manager.downloads[download_id]
|
|
details = f"File: {item.filename}\\n"
|
|
details += f"Repository: {item.repo_id}\\n"
|
|
details += f"Save Path: {item.save_path}"
|
|
|
|
if item.error_message:
|
|
details += f"\\nError: {item.error_message}"
|
|
|
|
self.details_text.delete(1.0, tk.END)
|
|
self.details_text.insert(1.0, details)
|
|
|
|
def _on_progress(self, item: DownloadItem):
|
|
"""Handle progress update."""
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: self._update_download_item(item))
|
|
|
|
def _on_status_change(self, item: DownloadItem):
|
|
"""Handle status change."""
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: self._update_download_item(item))
|
|
|
|
def _on_complete(self, item: DownloadItem):
|
|
"""Handle download completion."""
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: self._update_download_item(item))
|
|
|
|
def _on_error(self, item: DownloadItem):
|
|
"""Handle download error."""
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: self._update_download_item(item))
|
|
|
|
# Show error notification for auth issues
|
|
if item.status == DownloadStatus.AUTH_REQUIRED:
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: messagebox.showerror(
|
|
"Authentication Required",
|
|
f"Authentication failed for {item.filename}.\\n"
|
|
f"Please check your API key in Settings."
|
|
))
|
|
|
|
def _on_remove(self, item: DownloadItem):
|
|
"""Handle download removal."""
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(0, lambda: self._remove_download_from_tree(item.id))
|
|
|
|
def _remove_download_from_tree(self, download_id: str):
|
|
"""Remove download from treeview."""
|
|
if download_id in self.item_widgets:
|
|
try:
|
|
tree_id = self.item_widgets[download_id]['tree_id']
|
|
self.tree.delete(tree_id)
|
|
del self.item_widgets[download_id]
|
|
except (tk.TclError, KeyError):
|
|
# Item already removed or doesn't exist
|
|
if download_id in self.item_widgets:
|
|
del self.item_widgets[download_id]
|
|
|
|
def _clear_completed(self):
|
|
"""Clear completed downloads."""
|
|
self.manager.clear_completed()
|
|
|
|
def _pause_all(self):
|
|
"""Pause all active downloads."""
|
|
for item in self.manager.get_all_downloads():
|
|
if item.status == DownloadStatus.DOWNLOADING:
|
|
self.manager.pause_download(item.id)
|
|
|
|
def _resume_all(self):
|
|
"""Resume all paused downloads."""
|
|
for item in self.manager.get_all_downloads():
|
|
if item.status == DownloadStatus.PAUSED:
|
|
self.manager.resume_download(item.id)
|
|
|
|
def _update_display(self):
|
|
"""Update the display periodically with real-time updates."""
|
|
try:
|
|
# Update status summary
|
|
all_downloads = self.manager.get_all_downloads()
|
|
active = sum(1 for d in all_downloads if d.status == DownloadStatus.DOWNLOADING)
|
|
queued = sum(1 for d in all_downloads if d.status == DownloadStatus.QUEUED)
|
|
completed = sum(1 for d in all_downloads if d.status == DownloadStatus.COMPLETED)
|
|
failed = sum(1 for d in all_downloads if d.status in [DownloadStatus.FAILED, DownloadStatus.CANCELLED])
|
|
|
|
status_text = f"Downloads: {active} active, {queued} queued, {completed} completed, {failed} failed"
|
|
self.status_label.config(text=status_text)
|
|
|
|
# Add any new downloads
|
|
for item in all_downloads:
|
|
if item.id not in self.item_widgets:
|
|
self.add_download_item(item)
|
|
|
|
# Force update all items for real-time progress
|
|
for item in all_downloads:
|
|
if item.id in self.item_widgets:
|
|
self._update_download_item(item)
|
|
|
|
except Exception as e:
|
|
print(f"Error updating download display: {e}")
|
|
finally:
|
|
# Schedule next update with shorter interval for real-time feel
|
|
if hasattr(self.parent, 'after'):
|
|
self.parent.after(200, self._update_display) # Update every 200ms for smooth progress |