Update app.py

app.py

@@ -1,57 +1,34 @@
-import libtorrent as lt
-import time
 import streamlit as st
-import os
-import shutil
-
-st.title('磁力链接 BT 下载器')
-
-magnet_link = st.text_input('请输入磁力链接：')
-
-if magnet_link:
-    # 创建一个会话并配置设置
-    ses = lt.session()
-    settings = {
-        'connections_limit': 500,  # 增加连接数限制
-        'download_rate_limit': 0,  # 不限制下载速度
-        'upload_rate_limit': 0,    # 不限制上传速度
-        # ... 其他设置
-    }
-    ses.apply_settings(settings)
-
-    h = lt.add_magnet_uri(ses, magnet_link, {'save_path': './downloads'})
-    st.write('开始下载...')
-
-    while not h.is_seed():
-        s = h.status()
-        state_str = [
-            "queued",
-            "checking",
-            "downloading metadata",
-            "downloading",
-            "finished",
-            "seeding",
-            "allocating",
-            "checking fastresume",
-        ]
-        st.write(
-            f"进度: {s.progress * 100:.2f}%，速度: {s.download_rate / 1000000:.2f} KB/s，状态：{state_str[s.state]}"
-        )
-        time.sleep(1)
-
-    st.write('下载完成')
-
-    # 获取下载的文件路径
-    save_path = './downloads'
-
-    # 压缩文件夹为 zip 文件
-    shutil.make_archive('downloads', 'zip', save_path)
-
-    # 提供一个下载按钮给用户下载 zip 文件
-    with open('downloads.zip', 'rb') as file:
-        st.download_button(
-            label='下载文件',
-            data=file,
-            file_name='downloads.zip',
-            mime='application/zip'
-        )
+import requests
+from io import BytesIO
+
+# 设置Streamlit应用程序的标题
+st.title('文件下载器')
+
+# 创建一个文本输入框，让用户输入文件的URL
+url = st.text_input('输入文件的URL：')
+
+# 如果用户输入了URL并且点击了下载按钮
+if st.button('下载'):
+    if url:
+        try:
+            # 发送HTTP GET请求以下载文件
+            response = requests.get(url)
+            response.raise_for_status()  # 如果发生HTTP错误，将引发异常
+            
+            # 从URL中提取文件名
+            filename = url.split('/')[-1]
+            
+            # 创建一个字节流对象
+            file = BytesIO(response.content)
+            
+            # 提供文件下载
+            st.download_button(label='下载文件',
+                               data=file,
+                               file_name=filename,
+                               mime='application/octet-stream')
+            st.success(f"文件已准备好下载：{filename}")
+        except requests.exceptions.RequestException as e:
+            st.error(f"下载文件时出错：{e}")
+    else:
+        st.warning('请输入一个有效的URL。')