Initial release

backend/alembic/env.py

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+import asyncio
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy.ext.asyncio import AsyncEngine, create_async_engine
+
+from app.core.config import settings
+from app.models import Base  # noqa: F401 - registers all models
+
+config = context.config
+
+# Use the app's database URL (swap driver for sync alembic operations)
+db_url = settings.database_url
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=db_url.replace("+asyncpg", ""),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    engine: AsyncEngine = create_async_engine(db_url)
+    async with engine.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+    await engine.dispose()
+
+
+def run_migrations_online() -> None:
+    asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/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"}

backend/alembic/versions/86cca6d7adcb_initial_schema.py

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+"""initial_schema
+
+Revision ID: 86cca6d7adcb
+Revises:
+Create Date: 2026-05-27 16:31:52.870967
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+revision: str = '86cca6d7adcb'
+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(
+        'users',
+        sa.Column('id', sa.BigInteger(), nullable=False),
+        sa.Column('username', sa.String(255), nullable=True),
+        sa.Column('first_name', sa.String(255), nullable=False),
+        sa.Column('last_name', sa.String(255), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint('id'),
+    )
+
+    op.create_table(
+        'lotteries',
+        sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('creator_id', sa.BigInteger(), nullable=False),
+        sa.Column('title', sa.String(255), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('status', sa.String(20), nullable=False),
+        sa.Column('target_chat_id', sa.BigInteger(), nullable=True),
+        sa.Column('target_chat_title', sa.String(255), nullable=True),
+        sa.Column('require_membership', sa.Boolean(), nullable=False),
+        sa.Column('required_chat_ids', sa.JSON(), nullable=True),
+        sa.Column('required_chat_titles', sa.JSON(), nullable=True),
+        sa.Column('required_chat_types', sa.JSON(), nullable=True),
+        sa.Column('required_chat_usernames', sa.JSON(), nullable=True),
+        sa.Column('announcement_targets', sa.JSON(), nullable=True),
+        sa.Column('max_participants', sa.Integer(), nullable=True),
+        sa.Column('announcement_message_id', sa.BigInteger(), nullable=True),
+        sa.Column('contact_info', sa.Text(), nullable=True),
+        sa.Column('draw_at', sa.DateTime(), nullable=True),
+        sa.Column('auto_draw_count', sa.Integer(), nullable=True),
+        sa.Column('allow_multiple_wins', sa.Boolean(), server_default=sa.text('false'), nullable=False),
+        sa.Column('invite_link_chat_ids', sa.JSON(), server_default=sa.text("'[]'"), nullable=False),
+        sa.Column('creator_timezone', sa.String(64), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('drawn_at', sa.DateTime(), nullable=True),
+        sa.Column('draw_trigger', sa.String(20), nullable=True),
+        sa.Column('required_chat_passphrases', sa.JSON(), nullable=True),
+        sa.ForeignKeyConstraint(['creator_id'], ['users.id']),
+        sa.PrimaryKeyConstraint('id'),
+    )
+
+    op.create_table(
+        'prizes',
+        sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('lottery_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('name', sa.String(255), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('quantity', sa.Integer(), nullable=False),
+        sa.Column('sort_order', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['lottery_id'], ['lotteries.id'], ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id'),
+    )
+
+    op.create_table(
+        'participants',
+        sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('lottery_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('user_id', sa.BigInteger(), nullable=False),
+        sa.Column('joined_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['lottery_id'], ['lotteries.id'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id']),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('lottery_id', 'user_id'),
+    )
+
+    op.create_table(
+        'winners',
+        sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('lottery_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('user_id', sa.BigInteger(), nullable=False),
+        sa.Column('prize_id', postgresql.UUID(as_uuid=True), nullable=True),
+        sa.Column('prize_name', sa.String(255), nullable=False),
+        sa.Column('drawn_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['lottery_id'], ['lotteries.id'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['prize_id'], ['prizes.id'], ondelete='SET NULL'),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id']),
+        sa.PrimaryKeyConstraint('id'),
+    )
+
+    op.create_table(
+        'managed_chats',
+        sa.Column('id', sa.BigInteger(), nullable=False),
+        sa.Column('title', sa.String(255), nullable=False),
+        sa.Column('username', sa.String(255), nullable=True),
+        sa.Column('chat_type', sa.String(50), nullable=False),
+        sa.Column('invite_link', sa.String(512), nullable=True),
+        sa.Column('last_message_id', sa.BigInteger(), nullable=True),
+        sa.Column('is_active', sa.Boolean(), nullable=False),
+        sa.Column('added_at', sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint('id'),
+    )
+
+    op.create_table(
+        'passphrase_verifications',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('lottery_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('chat_id', sa.BigInteger(), nullable=False),
+        sa.Column('user_id', sa.BigInteger(), nullable=False),
+        sa.Column('verified_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['lottery_id'], ['lotteries.id'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id']),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('lottery_id', 'chat_id', 'user_id'),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table('passphrase_verifications')
+    op.drop_table('managed_chats')
+    op.drop_table('winners')
+    op.drop_table('participants')
+    op.drop_table('prizes')
+    op.drop_table('lotteries')
+    op.drop_table('users')

backend/alembic/versions/a1b2c3d4e5f6_convert_status_to_varchar.py

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+"""convert_status_to_varchar
+
+Revision ID: a1b2c3d4e5f6
+Revises: 86cca6d7adcb
+Create Date: 2026-06-02 12:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+
+revision: str = 'a1b2c3d4e5f6'
+down_revision: Union[str, None] = '86cca6d7adcb'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.execute("ALTER TABLE lotteries ALTER COLUMN status TYPE VARCHAR(20) USING status::text")
+    op.execute("DROP TYPE IF EXISTS lotterystatus")
+
+
+def downgrade() -> None:
+    op.execute("CREATE TYPE lotterystatus AS ENUM ('draft', 'active', 'drawing', 'finished', 'cancelled')")
+    op.execute("ALTER TABLE lotteries ALTER COLUMN status TYPE lotterystatus USING status::lotterystatus")