finalised backend

2025-12-15 17:18:27 +03:00
parent 036741c0bf
commit c20626c179
10 changed files with 652 additions and 0 deletions
@@ -0,0 +1,85 @@
+"""
+Alembic environment configuration
+"""
+from logging.config import fileConfig
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+from alembic import context
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+
+from src.infrastructure.database.base import Base
+from src.infrastructure.database.models import *
+from src.shared.config import settings
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+config.set_main_option("sqlalchemy.url", settings.database_url.replace("postgresql://", "postgresql+asyncpg://"))
+
+target_metadata = Base.metadata
+
+
+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_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    configuration = config.get_section(config.config_ini_section)
+    configuration["sqlalchemy.url"] = settings.database_url.replace("postgresql://", "postgresql+asyncpg://")
+    connectable = async_engine_from_config(
+        configuration,
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    import asyncio
+    asyncio.run(run_migrations_online())
+
@@ -0,0 +1,25 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}
+
@@ -0,0 +1,111 @@
+"""Initial migration
+
+Revision ID: 001
+Revises: 
+Create Date: 2024-01-01 00:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = '001'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        'users',
+        sa.Column('user_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('telegram_id', sa.String(), nullable=False),
+        sa.Column('role', sa.String(), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint('user_id'),
+        sa.UniqueConstraint('telegram_id')
+    )
+    op.create_index(op.f('ix_users_telegram_id'), 'users', ['telegram_id'], unique=True)
+    
+    op.create_table(
+        'collections',
+        sa.Column('collection_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('name', sa.String(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('owner_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('is_public', sa.Boolean(), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['owner_id'], ['users.user_id'], ),
+        sa.PrimaryKeyConstraint('collection_id')
+    )
+    
+    op.create_table(
+        'documents',
+        sa.Column('document_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('collection_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('title', sa.String(), nullable=False),
+        sa.Column('content', sa.Text(), nullable=False),
+        sa.Column('metadata', postgresql.JSON(astext_type=sa.Text()), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['collection_id'], ['collections.collection_id'], ),
+        sa.PrimaryKeyConstraint('document_id')
+    )
+    
+    op.create_table(
+        'embeddings',
+        sa.Column('embedding_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('document_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('embedding', postgresql.JSON(astext_type=sa.Text()), nullable=True),
+        sa.Column('model_version', sa.String(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['document_id'], ['documents.document_id'], ),
+        sa.PrimaryKeyConstraint('embedding_id')
+    )
+    
+    op.create_table(
+        'conversations',
+        sa.Column('conversation_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('user_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('collection_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('updated_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['collection_id'], ['collections.collection_id'], ),
+        sa.ForeignKeyConstraint(['user_id'], ['users.user_id'], ),
+        sa.PrimaryKeyConstraint('conversation_id')
+    )
+    
+    op.create_table(
+        'messages',
+        sa.Column('message_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('conversation_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('content', sa.Text(), nullable=False),
+        sa.Column('role', sa.String(), nullable=False),
+        sa.Column('sources', postgresql.JSON(astext_type=sa.Text()), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['conversation_id'], ['conversations.conversation_id'], ),
+        sa.PrimaryKeyConstraint('message_id')
+    )
+    
+    op.create_table(
+        'collection_access',
+        sa.Column('access_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('user_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('collection_id', postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['collection_id'], ['collections.collection_id'], ),
+        sa.ForeignKeyConstraint(['user_id'], ['users.user_id'], ),
+        sa.PrimaryKeyConstraint('access_id'),
+        sa.UniqueConstraint('user_id', 'collection_id', name='uq_user_collection')
+    )
+
+
+def downgrade() -> None:
+    op.drop_table('collection_access')
+    op.drop_table('messages')
+    op.drop_table('conversations')
+    op.drop_table('embeddings')
+    op.drop_table('documents')
+    op.drop_table('collections')
+    op.drop_index(op.f('ix_users_telegram_id'), table_name='users')
+    op.drop_table('users')
+