Initial commit

alembic/env.py

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+import os
+from logging.config import fileConfig
+from sqlalchemy import engine_from_config, pool
+from alembic import context
+
+from app.db.base import Base
+from app.models.transaction import Transaction  # noqa: makes Alembic detect the model
+
+config = context.config
+
+# Use DATABASE_URL from environment (set by docker-compose via .env)
+database_url = os.environ.get("DATABASE_URL")
+if database_url:
+    config.set_main_option("sqlalchemy.url", database_url)
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    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 run_migrations_online() -> None:
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    with connectable.connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata)
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+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"}

alembic/versions/0001_create_transactions.py

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+"""create transactions table
+
+Revision ID: 0001
+Revises:
+Create Date: 2026-02-25
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+
+revision: str = "0001"
+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:
+    op.create_table(
+        "transactions",
+        sa.Column("id", sa.Integer(), primary_key=True, index=True),
+        sa.Column("order_id", sa.String(), nullable=False),
+        sa.Column("payme_transaction_id", sa.String(), unique=True, nullable=True),
+        sa.Column("amount", sa.BigInteger(), nullable=False),
+        sa.Column("state", sa.Integer(), default=0),
+        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), onupdate=sa.func.now()),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("transactions")