update code structure and get session on each query

app/models.py

@@ -0,0 +1,28 @@
+from sqlalchemy import Column, Integer, String, DateTime
+from sqlalchemy.sql import func
+from sqlalchemy.orm import declarative_base
+
+Base = declarative_base()
+
+
+class WatchHistory(Base):
+    __tablename__ = "watch_history"
+    whid = Column(Integer, primary_key=True, autoincrement=True)
+    video_url = Column(String(255), nullable=False)
+    video_name = Column(String(255), nullable=False)
+    channel_url = Column(String(255), nullable=False)
+    channel_name = Column(String(255), nullable=False)
+    watch_date = Column(DateTime, nullable=False, server_default=func.now())
+    created_by = Column(
+        String(100), nullable=False, server_default="mpv-youtube-queue-server"
+    )
+
+
+class SavedQueue(Base):
+    __tablename__ = "saved_queue"
+    sqid = Column(Integer, primary_key=True, autoincrement=True)
+    video_url = Column(String(255), nullable=False)
+    created_date = Column(DateTime, nullable=False, server_default=func.now())
+    created_by = Column(
+        String(100), nullable=False, server_default="mpv-youtube-queue-server"
+    )