chore(database): init alembic migrations and update dependencies

Author: PyDevDeep

database/migrations/env.py

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+import asyncio
+import os
+from logging.config import fileConfig
+
+from alembic import context
+from dotenv import load_dotenv
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+load_dotenv()
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+
+# 1. Створюємо універсальну функцію отримання URL
+def get_url():
+    user = os.getenv("POSTGRES_USER", "seratonin")
+    password = os.getenv("POSTGRES_PASSWORD", "seratonin_pass")
+
+    # Використовуємо загальні назви DB_HOST та DB_PORT.
+    # Якщо їх немає в .env — беремо дефолти для тунелю.
+    host = os.getenv("DB_HOST", "127.0.0.1")
+    port = os.getenv("DB_PORT", os.getenv("EXTERNAL_POSTGRES_PORT", "5433"))
+
+    db = os.getenv("POSTGRES_DB", "seratonin_db")
+
+    return f"postgresql+asyncpg://{user}:{password}@{host}:{port}/{db}"
+
+
+# 2. Встановлюємо URL в конфігурацію
+config.set_main_option("sqlalchemy.url", get_url())
+
+target_metadata = None
+
+# 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:
+    """In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+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()

database/migrations/script.py.mako

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

database/migrations/versions/2956e6f64bfa_initial_schema.py

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+"""initial_schema
+
+Revision ID: 0c23d660630f
+Revises:
+Create Date: 2026-03-31 09:48:06.028203
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "0c23d660630f"
+down_revision: Union[str, Sequence[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.Integer(), primary_key=True),
+        sa.Column("username", sa.String(length=255), nullable=False, unique=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+    op.create_table(
+        "drafts",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
+        sa.Column("topic", sa.String(length=255), nullable=False),
+        sa.Column("content", sa.Text(), nullable=True),
+        sa.Column("status", sa.String(length=50), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+    op.create_table(
+        "published_posts",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("draft_id", sa.Integer(), sa.ForeignKey("drafts.id"), nullable=False),
+        sa.Column("platform", sa.String(length=50), nullable=False),
+        sa.Column("post_url", sa.String(length=500), nullable=False),
+        sa.Column(
+            "published_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+    op.create_table(
+        "feedback",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("draft_id", sa.Integer(), sa.ForeignKey("drafts.id"), nullable=False),
+        sa.Column("user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
+        sa.Column("comment", sa.Text(), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+    op.create_table(
+        "task_results",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("task_id", sa.String(length=255), nullable=False, unique=True),
+        sa.Column("status", sa.String(length=50), nullable=False),
+        sa.Column("result", sa.JSON(), nullable=True),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("task_results")
+    op.drop_table("feedback")
+    op.drop_table("published_posts")
+    op.drop_table("drafts")
+    op.drop_table("users")