Enhance PVideoDl with finished_at tracking for downloads and UI updates. Added finished_at field to Download model, updated storage to handle legacy databases, and improved frontend to display recent downloads. Refactored scripts for better clarity and error handling.

tests/test_storage.py

@@ -1,6 +1,8 @@
 import tempfile
+from datetime import datetime, timezone
 from pathlib import Path
 
+import aiosqlite
 import pytest
 
 from app.core.storage import SqliteStorage
@@ -57,6 +59,45 @@ async def test_delete(storage: SqliteStorage):
     assert await storage.get(d.id) is None
 
 
+async def test_finished_at_roundtrip(storage: SqliteStorage):
+    d = Download(url="https://example.com/a.zip")
+    await storage.create(d)
+    assert (await storage.get(d.id)).finished_at is None
+
+    ts = datetime.now(timezone.utc)
+    snap = await storage.update(d.id, status=DownloadStatus.DONE, finished_at=ts)
+    assert snap is not None and snap.finished_at == ts
+
+
+async def test_migrates_legacy_db_without_finished_at():
+    # БД, созданная до появления колонки finished_at.
+    path = Path(tempfile.mkdtemp()) / "legacy.db"
+    db = await aiosqlite.connect(path)
+    await db.execute(
+        """
+        CREATE TABLE downloads (
+            id TEXT PRIMARY KEY, url TEXT NOT NULL, filename TEXT,
+            status TEXT NOT NULL, progress REAL NOT NULL DEFAULT 0,
+            size_bytes INTEGER, downloaded_bytes INTEGER NOT NULL DEFAULT 0,
+            speed REAL, eta REAL, error TEXT, created_at TEXT NOT NULL
+        )
+        """
+    )
+    await db.execute(
+        "INSERT INTO downloads (id, url, status, created_at) VALUES (?, ?, ?, ?)",
+        ("x1", "https://e.com/a.zip", "done", datetime.now(timezone.utc).isoformat()),
+    )
+    await db.commit()
+    await db.close()
+
+    st = SqliteStorage(path)
+    await st.init()  # должен добавить колонку, не уронив существующие данные
+    got = await st.get("x1")
+    assert got is not None and got.status == DownloadStatus.DONE
+    assert got.finished_at is None
+    await st.close()
+
+
 async def test_downloading_marked_failed_on_init():
     path = Path(tempfile.mkdtemp()) / "test.db"
     st = SqliteStorage(path)
@@ -69,4 +110,5 @@ async def test_downloading_marked_failed_on_init():
     await st2.init()  # должен пометить "качающиеся" записи как FAILED
     got = await st2.get(d.id)
     assert got is not None and got.status == DownloadStatus.FAILED
+    assert got.finished_at is not None  # прерванная загрузка тоже «завершилась»
     await st2.close()