Add alembic migrations

backend/migrations/README

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+Generic single-database configuration.

backend/migrations/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy.engine import Connection
+from sqlmodel import SQLModel
+from app.providers.db_provider import get_connection
+
+from alembic import context
+
+import asyncio
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = SQLModel.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    async with get_connection() as connection:
+        await connection.run_sync(do_run_migrations)
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+
+    asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/migrations/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

backend/migrations/versions/bbee168ba406_.py

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+"""
+
+Revision ID: bbee168ba406
+Revises: 
+Create Date: 2025-02-19 15:48:47.075283
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'bbee168ba406'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('house')
+    op.drop_table('owner')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('owner',
+    sa.Column('id', sa.UUID(), autoincrement=False, nullable=False),
+    sa.Column('user_id', sa.UUID(), autoincrement=False, nullable=False),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], name='owner_user_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='owner_pkey'),
+    postgresql_ignore_search_path=False
+    )
+    op.create_table('house',
+    sa.Column('id', sa.UUID(), autoincrement=False, nullable=False),
+    sa.Column('address', sa.VARCHAR(), autoincrement=False, nullable=False),
+    sa.Column('city', sa.VARCHAR(), autoincrement=False, nullable=False),
+    sa.Column('country', sa.VARCHAR(), autoincrement=False, nullable=False),
+    sa.Column('price', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=False),
+    sa.Column('description', sa.VARCHAR(), autoincrement=False, nullable=False),
+    sa.Column('owner_id', sa.UUID(), autoincrement=False, nullable=False),
+    sa.ForeignKeyConstraint(['owner_id'], ['owner.id'], name='house_owner_id_fkey'),
+    sa.PrimaryKeyConstraint('id', name='house_pkey')
+    )
+    # ### end Alembic commands ###