"""ui_settings: single-row UI settings (phase 91)

Revision ID: 0014
Revises: 0013
Create Date: 2026-09-09

Phase 91 (admin Theme tab: the owner sets the app name, input
placeholder, footer text and the 8 identity colors with text fields
and color pickers — one additive, fully reversible table, A13):

* ``ui_settings`` — ONE row (PK ``id``, the row is always id 1): the
  phase-91 admin Theme tab persists its values here. The 3 strings
  (``app_name`` / ``input_placeholder`` / ``footer_text``, VARCHAR(300))
  and the 8 identity colors (``bg`` / ``surface`` / ``ink`` /
  ``ink_soft`` / ``line`` / ``brand`` / ``brand_soft`` / ``brand_ink``,
  VARCHAR(7) ``#rrggbb``) are ALL nullable — NULL = default (the env
  value for the strings, the built-in palette for the colors, B1).
  The row is created only by the PUT upsert (no seed, no server
  default — a missing row means "defaults", the byte-identical
  contract).
"""
from __future__ import annotations

import sqlalchemy as sa

from alembic import op

revision = "0014"
down_revision = "0013"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "ui_settings",
        sa.Column("id", sa.Integer(), nullable=False),
        sa.Column("app_name", sa.String(length=300), nullable=True),
        sa.Column("input_placeholder", sa.String(length=300), nullable=True),
        sa.Column("footer_text", sa.String(length=300), nullable=True),
        sa.Column("bg", sa.String(length=7), nullable=True),
        sa.Column("surface", sa.String(length=7), nullable=True),
        sa.Column("ink", sa.String(length=7), nullable=True),
        sa.Column("ink_soft", sa.String(length=7), nullable=True),
        sa.Column("line", sa.String(length=7), nullable=True),
        sa.Column("brand", sa.String(length=7), nullable=True),
        sa.Column("brand_soft", sa.String(length=7), nullable=True),
        sa.Column("brand_ink", sa.String(length=7), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )


def downgrade() -> None:
    # Safe order: the table is the only 0014 artefact — dropping it
    # leaves 0013's schema byte-identical (A13, fully reversible).
    op.drop_table("ui_settings")