budget-tracker/backend/alembic/versions/001_initial_models.py

"""initial models

Revision ID: 001_initial
Revises:
Create Date: 2026-03-17

"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "001_initial"
down_revision: str | None = None
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    # --- users ---
    op.create_table(
        "users",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("email", sa.String(255), nullable=False),
        sa.Column("hashed_password", sa.String(255), nullable=False),
        sa.Column("full_name", sa.String(100), nullable=False),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default="true"),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("email"),
    )
    op.create_index("ix_users_email", "users", ["email"])

    # --- categories ---
    op.create_table(
        "categories",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("name", sa.String(50), nullable=False),
        sa.Column("type", sa.String(10), nullable=False),
        sa.Column("color", sa.String(7), nullable=True),
        sa.Column("icon", sa.String(50), nullable=True),
        sa.Column("is_default", sa.Boolean(), nullable=False, server_default="false"),
        sa.Column("deleted_at", sa.DateTime(timezone=False), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_categories_user_id", "categories", ["user_id"])

    # --- transactions ---
    op.create_table(
        "transactions",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("category_id", sa.Uuid(), nullable=False),
        sa.Column("amount_cents", sa.Integer(), nullable=False),
        sa.Column("type", sa.String(10), nullable=False),
        sa.Column("description", sa.String(255), nullable=True),
        sa.Column("transaction_date", sa.Date(), nullable=False),
        sa.Column("deleted_at", sa.DateTime(timezone=False), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.CheckConstraint("amount_cents > 0", name="ck_transactions_amount_positive"),
        sa.ForeignKeyConstraint(["category_id"], ["categories.id"]),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        "ix_transactions_user_date",
        "transactions",
        ["user_id", "transaction_date", "deleted_at"],
    )
    op.create_index(
        "ix_transactions_user_category",
        "transactions",
        ["user_id", "category_id", "deleted_at"],
    )

    # --- budgets ---
    op.create_table(
        "budgets",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("category_id", sa.Uuid(), nullable=False),
        sa.Column("month", sa.String(7), nullable=False),
        sa.Column("limit_cents", sa.Integer(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.CheckConstraint("limit_cents > 0", name="ck_budgets_limit_positive"),
        sa.ForeignKeyConstraint(["category_id"], ["categories.id"]),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint(
            "user_id", "category_id", "month", name="uq_budgets_user_category_month"
        ),
    )
    op.create_index("ix_budgets_user_id", "budgets", ["user_id"])

    # --- refresh_tokens ---
    op.create_table(
        "refresh_tokens",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("token_hash", sa.String(64), nullable=False),
        sa.Column("expires_at", sa.DateTime(timezone=False), nullable=False),
        sa.Column("revoked_at", sa.DateTime(timezone=False), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=False),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("token_hash"),
    )
    op.create_index("ix_refresh_tokens_user_id", "refresh_tokens", ["user_id"])


def downgrade() -> None:
    op.drop_table("refresh_tokens")
    op.drop_table("budgets")
    op.drop_table("transactions")
    op.drop_table("categories")
    op.drop_table("users")