"""init db

Revision ID: 001_init_db
Revises:
Create Date: 2023-11-14 12:00:00.000000

"""

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = "001_init_db"
down_revision = None
branch_labels = None
depends_on = None


def upgrade():
    # Create users table
    op.create_table(
        "user",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=True),
        sa.Column("email", sa.String(), nullable=False),
        sa.Column("username", sa.String(), nullable=False),
        sa.Column("hashed_password", sa.String(), nullable=False),
        sa.Column("is_active", sa.Boolean(), nullable=True),
        sa.Column("is_superuser", sa.Boolean(), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_user_email"), "user", ["email"], unique=True)
    op.create_index(op.f("ix_user_id"), "user", ["id"], unique=False)
    op.create_index(op.f("ix_user_username"), "user", ["username"], unique=True)

    # Create tasks table
    op.create_table(
        "task",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=True),
        sa.Column("updated_at", sa.DateTime(), nullable=True),
        sa.Column("title", sa.String(100), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("status", sa.Enum("todo", "in_progress", "done", name="taskstatus"), nullable=False),
        sa.Column("priority", sa.Enum("low", "medium", "high", name="taskpriority"), nullable=False),
        sa.Column("is_completed", sa.Boolean(), nullable=True),
        sa.Column("owner_id", sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(
            ["owner_id"],
            ["user.id"],
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(op.f("ix_task_id"), "task", ["id"], unique=False)
    op.create_index(op.f("ix_task_title"), "task", ["title"], unique=False)


def downgrade():
    # Drop tasks table
    op.drop_index(op.f("ix_task_title"), table_name="task")
    op.drop_index(op.f("ix_task_id"), table_name="task")
    op.drop_table("task")

    # Drop enum types (only works in PostgreSQL, not SQLite)
    # No need to drop enums in SQLite

    # Drop users table
    op.drop_index(op.f("ix_user_username"), table_name="user")
    op.drop_index(op.f("ix_user_id"), table_name="user")
    op.drop_index(op.f("ix_user_email"), table_name="user")
    op.drop_table("user")