"""Éditeur de badges v2 (verso, fond de zone, auto-ajustement, photo ovale)

Revision ID: 0026_badge_editor_v2
Revises: 0025_badge_field_text
Create Date: 2026-10-27

`badge_field.face` : face du badge (`FRONT`/`BACK`) — les champs existants
deviennent des champs du recto. La contrainte d'unicité passe de
(`edition_id`, `field_type`) à (`edition_id`, `face`, `field_type`) : un même
champ peut figurer sur les deux faces. `bg_color` (fond de la zone,
transparent si `NULL`), `auto_fit` (réduction automatique du texte) et
`photo_shape` (`RECT`/`OVAL`, champ `PHOTO`).
"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "0026_badge_editor_v2"
down_revision: str | None = "0025_badge_field_text"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None

_FACE = sa.Enum("FRONT", "BACK", name="badgeface", native_enum=False)
_PHOTO_SHAPE = sa.Enum("RECT", "OVAL", name="badgephotoshape", native_enum=False)


def upgrade() -> None:
    op.add_column(
        "badge_field",
        sa.Column("face", _FACE, server_default="FRONT", nullable=False),
    )
    op.add_column("badge_field", sa.Column("bg_color", sa.String(), nullable=True))
    op.add_column(
        "badge_field",
        sa.Column("auto_fit", sa.Boolean(), server_default="false", nullable=False),
    )
    op.add_column(
        "badge_field",
        sa.Column("photo_shape", _PHOTO_SHAPE, server_default="RECT", nullable=False),
    )
    op.drop_constraint("uq_badge_field_edition_type", "badge_field", type_="unique")
    op.create_unique_constraint(
        "uq_badge_field_edition_face_type",
        "badge_field",
        ["edition_id", "face", "field_type"],
    )


def downgrade() -> None:
    # Le verso n'existait pas : ses champs sont perdus (sinon l'ancienne
    # contrainte d'unicité échouerait sur un champ présent sur les deux faces).
    op.execute("DELETE FROM badge_field WHERE face = 'BACK'")
    op.drop_constraint("uq_badge_field_edition_face_type", "badge_field", type_="unique")
    op.create_unique_constraint(
        "uq_badge_field_edition_type", "badge_field", ["edition_id", "field_type"]
    )
    op.drop_column("badge_field", "photo_shape")
    op.drop_column("badge_field", "auto_fit")
    op.drop_column("badge_field", "bg_color")
    op.drop_column("badge_field", "face")