"""Irreversible bulk-delete of all domain (parts/taxonomy/fit) data.

Leaves users, roles/permissions, refresh tokens, the audit log, and the
ImportedPartConfig (OData connection settings) untouched.
"""

from sqlalchemy import delete
from sqlalchemy.ext.asyncio import AsyncSession

from app.models.associations import augmented_part_imported_parts
from app.models.attachment_point import AttachmentPoint
from app.models.attachment_point_name import AttachmentPointName
from app.models.augmented_part import AugmentedPart, AugmentedPartNote
from app.models.clamp_connection import ClampConnection
from app.models.fit import Fit, FitNote
from app.models.imported_part import ImportedPart
from app.models.iso_thread import IsoThread
from app.models.manufacturer import Manufacturer
from app.models.scope_info import ScopeInfo
from app.models.scope_model import ScopeModel
from app.models.static_connection import StaticConnection
from app.models.unc_thread import UncThread

# Children before the RESTRICT-protected reference tables they point to.
_TARGETS = [
    ("Fit notes", FitNote),
    ("Fits", Fit),
    ("Augmented part notes", AugmentedPartNote),
    ("Scope info", ScopeInfo),
    ("Attachment points", AttachmentPoint),
    ("Augmented part / imported part links", augmented_part_imported_parts),
    ("Augmented parts", AugmentedPart),
    ("Imported parts", ImportedPart),
    ("Scope models", ScopeModel),
    ("Attachment point names", AttachmentPointName),
    ("ISO threads", IsoThread),
    ("UNC threads", UncThread),
    ("Clamp connections", ClampConnection),
    ("Static connections", StaticConnection),
    ("Manufacturers", Manufacturer),
]


async def purge_domain_data(db: AsyncSession) -> dict[str, int]:
    """Delete every row from every domain table, in FK-safe order.

    Returns a label -> rows-deleted map for reporting/audit purposes.
    """
    counts: dict[str, int] = {}
    for label, target in _TARGETS:
        result = await db.execute(delete(target))
        counts[label] = result.rowcount or 0
    await db.commit()
    return counts