"""initial schema
Revision ID: 0001
Revises:
"""
import sqlalchemy as sa
from alembic import op

revision = "0001"
down_revision = None
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "app_state",
        sa.Column("key", sa.String(64), primary_key=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
    )
    op.create_table(
        "users",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("username", sa.String(64), nullable=False),
        sa.Column("password_hash", sa.Text(), nullable=False),
        sa.Column("timezone", sa.String(64), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.UniqueConstraint("username"),
    )
    op.create_index("ix_users_username", "users", ["username"])
    op.create_table(
        "sessions",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("token_hash", sa.String(64), nullable=False),
        sa.Column("user_id", sa.Uuid(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
    )
    op.create_index("ix_sessions_token_hash", "sessions", ["token_hash"], unique=True)
    op.create_index("ix_sessions_user_id", "sessions", ["user_id"])
    op.create_table(
        "folders",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("user_id", sa.Uuid(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("name", sa.String(120), nullable=False),
        sa.Column("position", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.UniqueConstraint("user_id", "id", name="uq_folders_user_id_id"),
    )
    op.create_index("ix_folders_user_id", "folders", ["user_id"])
    op.create_table(
        "task_lists",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("folder_id", sa.Uuid()),
        sa.Column("name", sa.String(120), nullable=False),
        sa.Column("is_inbox", sa.Boolean(), nullable=False),
        sa.Column("position", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(
            ["user_id", "folder_id"], ["folders.user_id", "folders.id"], ondelete="SET NULL"
        ),
        sa.UniqueConstraint("user_id", "id", name="uq_task_lists_user_id_id"),
    )
    op.create_index("ix_task_lists_user_id", "task_lists", ["user_id"])
    op.create_table(
        "tasks",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("list_id", sa.Uuid(), nullable=False),
        sa.Column("parent_id", sa.Uuid()),
        sa.Column("title", sa.String(500), nullable=False),
        sa.Column("description", sa.Text(), nullable=False),
        sa.Column("priority", sa.Integer(), nullable=False),
        sa.Column("completed", sa.Boolean(), nullable=False),
        sa.Column("due_at", sa.DateTime(timezone=True)),
        sa.Column("version", sa.Integer(), nullable=False),
        sa.Column("position", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("deleted_at", sa.DateTime(timezone=True)),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(
            ["user_id", "list_id"], ["task_lists.user_id", "task_lists.id"], ondelete="CASCADE"
        ),
        sa.ForeignKeyConstraint(["parent_id"], ["tasks.id"], ondelete="CASCADE"),
    )
    op.create_index("ix_tasks_user_id", "tasks", ["user_id"])
    op.create_index("ix_tasks_list_id", "tasks", ["list_id"])
    op.create_index("ix_tasks_completed", "tasks", ["completed"])


def downgrade() -> None:
    op.drop_table("tasks")
    op.drop_table("task_lists")
    op.drop_table("folders")
    op.drop_table("sessions")
    op.drop_table("users")
    op.drop_table("app_state")