"""git sources: admin-managed list of git repo URLs

Revision ID: 0006
Revises: 0005
Create Date: 2026-08-26

Phase 35 (git-sources-admin story, A13 — one additive, reversible table,
no other schema change):

* ``git_sources`` — one row per admin-managed git source URL. The admin
  page (``/git-sources.html``) maintains the list that the Sync button
  (phase 32) and ``import_docs`` (phase 28) clone/pull. DB rows win over
  the ``BOR_GIT_SOURCES`` env var, which stays a fallback while the table
  is empty (once the table has rows it is ignored — the UI is the source
  of truth). ``url`` is unique (``uq_git_sources_url``); ``added_at`` is
  stamped server-side and orders the list oldest-first.
"""
from __future__ import annotations

import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

from alembic import op

revision = "0006"
down_revision = "0005"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "git_sources",
        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
        sa.Column("url", sa.Text(), nullable=False),
        sa.Column(
            "added_at",
            sa.DateTime(timezone=True),
            server_default=sa.func.now(),
            nullable=False,
        ),
    )
    op.create_index("uq_git_sources_url", "git_sources", ["url"], unique=True)


def downgrade() -> None:
    op.drop_index("uq_git_sources_url", table_name="git_sources")
    op.drop_table("git_sources")