"""add activity share and choices

Revision ID: 202605160001
Revises: 202604150001
Create Date: 2026-05-16 20:30:00
"""

from alembic import op
import sqlalchemy as sa


revision = "202605160001"
down_revision = "202604150001"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column("activities", sa.Column("match_deadline", sa.DateTime(), nullable=True))
    op.add_column("activities", sa.Column("selection_limit", sa.SmallInteger(), nullable=False, server_default="3"))
    op.add_column("activities", sa.Column("share_token", sa.String(length=64), nullable=True))
    op.add_column("activities", sa.Column("share_qr_url", sa.String(length=500), nullable=True))
    op.create_unique_constraint("uq_activities_share_token", "activities", ["share_token"])

    op.create_table(
        "activity_guest_choices",
        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
        sa.Column("activity_id", sa.Integer(), sa.ForeignKey("activities.id"), nullable=False),
        sa.Column("from_user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
        sa.Column("to_user_id", sa.Integer(), sa.ForeignKey("users.id"), nullable=False),
        sa.Column("status", sa.SmallInteger(), nullable=False, server_default="1"),
        sa.Column("cancelled_at", sa.DateTime(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("activity_id", "from_user_id", "to_user_id", name="uk_activity_choice"),
    )

    op.execute("UPDATE activities SET selection_limit = 3 WHERE selection_limit IS NULL")


def downgrade() -> None:
    op.drop_table("activity_guest_choices")
    op.drop_constraint("uq_activities_share_token", "activities", type_="unique")
    op.drop_column("activities", "share_qr_url")
    op.drop_column("activities", "share_token")
    op.drop_column("activities", "selection_limit")
    op.drop_column("activities", "match_deadline")