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app.py
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app.py
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from flask import Flask, request, jsonify, render_template_string
from yt_dlp import YoutubeDL
import os
import re
import logging
import sys
app = Flask(__name__)
# 配置日志
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
class CustomLogger:
def debug(self, msg):
logging.debug(msg)
def warning(self, msg):
logging.warning(msg)
def error(self, msg):
logging.error(msg)
def progress_hook(d):
if d['status'] == 'downloading':
print(f"\rDownloading: {d['_percent_str']}", end="")
sys.stdout.flush()
def download_audio(url, output_dir, number, check=False, max_retries=3):
base_dir = "/mnt/shares/audiobooks/"
new_output_dir = os.path.join(base_dir, output_dir)
os.makedirs(new_output_dir, exist_ok=True)
preferred_format = 'm4a'
if check:
filename = '%(title)s.%(ext)s'
else:
title_pattern = re.compile(r'^(.*?)(\.m4a)?$')
def format_title(title):
match = title_pattern.match(title)
if match and match.group(2):
return match.group(1)
else:
return f"{title}.{preferred_format}"
filename = f"{output_dir} - {number}.{preferred_format}"
filepath = os.path.join(new_output_dir, filename)
ydl_opts = {
'format': 'bestaudio/best',
'postprocessors': [{
'key': 'FFmpegExtractAudio',
'preferredcodec': preferred_format,
'preferredquality': '192',
}],
'outtmpl': filepath,
'noplaylist': True,
'ignoreerrors': True,
'download_archive': os.path.join(new_output_dir, '.downloaded_videos.txt'),
'logger': CustomLogger(),
'progress_hooks': [progress_hook],
}
retries = 0
while retries <= max_retries:
try:
with YoutubeDL(ydl_opts) as ydl:
info_dict = ydl.extract_info(url, download=True)
actual_filename = os.path.basename(info_dict['requested_downloads'][0]['filepath'])
break
except Exception as e:
if retries < max_retries:
retries += 1
logging.info(f"下载失败，正在进行第{retries}/{max_retries}次重试...")
else:
raise e
return f"音频已下载到'{new_output_dir}'目录下，并以'{actual_filename}'命名。"
@app.route('/download', methods=['POST'])
def download():
data = request.get_json()
url = data.get('url')
output_dir = data.get('output_dir')
number = int(data.get('number', 1))
check = data.get('check', False)
results = []
for i in range(1, number + 1):
url_with_param = f"{url}?p={i}"
result = download_audio(url_with_param, output_dir, i, check)
results.append(result)
if "No such playlist" in result:
break
return jsonify(results)
@app.route('/')
def home():
return render_template_string("""
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>BiliBili Audio Downloader</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<h1>BiliBili Audio Downloader</h1>
<form id="downloadForm">
<label for="url">视频URL:</label><br>
<input type="text" id="url" name="url"><br>
<label for="output_dir">输出目录:</label><br>
<input type="text" id="output_dir" name="output_dir"><br>
<label for="number">循环次数:</label><br>
<input type="number" id="number" name="number" value="1"><br>
<label for="check">是否保留原名:</label><br>
<input type="checkbox" id="check" name="check"><br>
<button type="button" onclick="startDownload()">开始下载</button>
<button type="button" onclick="showConstructedUrlAndNumber()">显示构造</button>
</form>
<div id="results"></div>
<div id="constructedInfo" style="display:none;">
<p>构造的新网址: <span id="constructedUrl"></span></p>
<p>循环次数: <span id="constructedNumber"></span></p>
<p>输出目录: <span id="constructedOutputDir"></span></p>
<p>保留原名: <span id="constructedCheck"></span></p>
</div>
<script>
function startDownload() {
var url = $('#url').val();
var output_dir = $('#output_dir').val();
var number = parseInt($('#number').val(), 10);
var check = $('#check').is(':checked');
// 解析URL以获取BVid
var parsedUrl = new URL(url);
var pathParts = parsedUrl.pathname.split('/');
var BVid = pathParts[2];
var newUrl = `https://www.bilibili.com/video/${BVid}`;
$('#constructedUrl').text(newUrl); // 显示构造的新网址
// 从查询字符串中获取page
var searchParams = new URLSearchParams(parsedUrl.search);
var pageFromUrl = searchParams.get('p');
if (pageFromUrl && !isNaN(pageFromUrl)) {
$('#number').val(pageFromUrl); // 使用从URL中提取的page作为number
number = parseInt(pageFromUrl, 10); // 更新number变量
}
$.ajax({
url: '/download',
type: 'POST',
contentType: 'application/json',
data: JSON.stringify({url: newUrl, output_dir: output_dir, number: number, check: check}),
success: function(response) {
$('#results').empty();
response.forEach(function(result) {
$('#results').append('<p>' + result + '</p>');
});
},
error: function(error) {
console.error(error);
}
});
}
function showConstructedUrlAndNumber() {
var url = $('#url').val();
var number = parseInt($('#number').val(), 10);
var output_dir = $('#output_dir').val();
var check = $('#check').is(':checked');
// 解析URL以获取BVid
var parsedUrl = new URL(url);
var pathParts = parsedUrl.pathname.split('/');
var BVid = pathParts[2];
var newUrl = `https://www.bilibili.com/video/${BVid}`;
// 显示构造的新网址、循环次数和输出目录
$('#constructedUrl').text(newUrl);
$('#constructedNumber').text(!isNaN(number) ? number : "用户给定的数字");
$('#constructedOutputDir').text(output_dir);
$('#constructedCheck').text(check ? '已启用' : '未启用');
$('#constructedInfo').css('display', 'block');
}
</script>
</body>
</html>
""")
if __name__ == '__main__':
app.run(host='0.0.0.0', debug=True)