"""git_sources.include_hidden: per-source hidden-folders flag (phase 105)

Revision ID: 0019
Revises: 0018
Create Date: 2026-09-12

Phase 105 (per-source hidden-folders toggle: dot-prefixed paths become
indexable per input — the owner flips a "Hidden" checkbox next to the
"Ignore paths" button on the Sources page): when the flag is ON, the
importer walk (``app.rag.importer.iter_importable_files``) no longer
skips dot-prefixed path components for that source — files inside
hidden folders AND hidden files with an importable extension are
indexed, embedded, and summarized exactly like visible files (A1).
``EXCLUDED_DIRS`` (``.venv``, ``node_modules``, ``.git``, …) stay
excluded in BOTH states, and the extension filter always applies. The
flag takes effect on the NEXT sync (no auto-sync — the ignore-list
precedent, phase 89); a previously indexed hidden file is pruned on
the next sync after the flag flips OFF (A2). One additive, fully
reversible column (A13), no other schema change:

* ``git_sources.include_hidden`` — BOOLEAN NOT NULL with server
  default ``false``: every pre-phase-105 row reads ``False`` —
  byte-identical import behavior until the owner flips it (A4).
"""
from __future__ import annotations

import sqlalchemy as sa

from alembic import op

revision = "0019"
down_revision = "0018"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        "git_sources",
        sa.Column(
            "include_hidden",
            sa.Boolean(),
            server_default=sa.text("false"),
            nullable=False,
        ),
    )


def downgrade() -> None:
    # The column is the only 0019 artefact — dropping it leaves
    # 0018's schema byte-identical (A13, fully reversible).
    op.drop_column("git_sources", "include_hidden")