"""Migration 0106's downgrade data step, DB-lane: a Hub folder holding a file becomes an own folder
that keeps the file — under a name its user's own folders do not already have (their names are
unique per user, case-blind), and with its token gone with the tokens table."""

from alembic import command
from alembic.config import Config
from sqlalchemy import text

from app.db import engine


def test_a_hub_folder_with_a_file_comes_back_as_an_own_folder_beside_a_namesake(db, make_user):
    uid = make_user().id
    with engine.begin() as conn:
        hub = conn.execute(
            text("INSERT INTO file_folders (user_id, kind) VALUES (:u, 'hub') RETURNING id"),
            {"u": uid},
        ).scalar_one()
        conn.execute(
            text("INSERT INTO file_folders (user_id, kind, name) VALUES (:u, 'own', :n)"),
            {"u": uid, "n": f"hub {hub}"},  # the name the downgrade would pick, in another case
        )
        held = conn.execute(
            text(
                "INSERT INTO download_jobs (user_id, source_kind, source_ref, profile_snapshot,"
                " status, folder_id) VALUES (:u, 'upload', 'x', '{}', 'queued', :f) RETURNING id"
            ),
            {"u": uid, "f": hub},
        ).scalar_one()
        conn.execute(
            text(
                "INSERT INTO api_tokens (user_id, name, prefix, token_hash) VALUES"
                " (:u, 'hub', 'sfl_abcd1234', 'h') "
            ),
            {"u": uid},
        )
    cfg = Config("alembic.ini")
    command.downgrade(cfg, "0105_job_source_key")
    try:
        with engine.connect() as conn:
            kind, name = conn.execute(
                text("SELECT kind, name FROM file_folders WHERE id = :i"), {"i": hub}
            ).one()
            folder_of_job = conn.execute(
                text("SELECT folder_id FROM download_jobs WHERE id = :j"), {"j": held}
            ).scalar_one()
    finally:
        command.upgrade(cfg, "head")
    assert (kind, name) == ("own", f"Hub {hub} (2)")
    assert folder_of_job == hub