feat: add database connection with modified endpoints

dependencies/database.py

@@ -0,0 +1,16 @@
+import os
+from databases import Database
+from sqlalchemy import create_engine, MetaData
+from sqlalchemy.orm import declarative_base, sessionmaker
+
+DATABASE_URL = os.getenv("DATABASE_URL")
+
+# for Alembic migrations and sync operations
+engine = create_engine(DATABASE_URL)
+
+# to use with async requests
+database = Database(DATABASE_URL)
+
+metadata = MetaData()
+Base = declarative_base(metadata=metadata)
+

dependencies/models.py

@@ -0,0 +1,9 @@
+from sqlalchemy import Column, Integer, String
+from dependencies.database import Base
+
+class UrlMapping(Base):
+    __tablename__ = "url_mapping"
+
+    id = Column(Integer, primary_key=True, index=True)
+    url = Column(String, nullable=False)
+    shortcode = Column(String, index=True, unique=True, nullable=False)