"""Mapping-metadata catalog — authoritative source-field + transform list.

The admin mapping builder renders dropdowns from this endpoint so the
frontend can never drift from what the renderer actually accepts (the
old hard-coded FE transform list silently dropped strip_company_prefix).
"""
from __future__ import annotations

from app.domains.identity_sync.mapping import (
    SUPPORTED_SOURCE_FIELDS,
    SUPPORTED_TRANSFORMS,
    mapping_metadata,
)


def test_metadata_covers_every_supported_field_and_transform():
    meta = mapping_metadata()
    field_names = {f["name"] for f in meta["source_fields"]}
    transform_names = {x["name"] for x in meta["transforms"]}
    # The catalog must be a complete projection of the renderer whitelist
    # — no field the renderer accepts may be missing from the picker.
    assert field_names == set(SUPPORTED_SOURCE_FIELDS)
    assert transform_names == set(SUPPORTED_TRANSFORMS)
    # Every source field carries a category (drives the grouped picker).
    assert all(f.get("category") for f in meta["source_fields"])
    # The historically-dropped transform is present.
    assert "strip_company_prefix" in transform_names


async def test_metadata_endpoint_admin_ok(client, admin_headers):
    resp = await client.get(
        "/api/v1/identity-sync/mapping-metadata", headers=admin_headers,
    )
    assert resp.status_code == 200, resp.text
    data = resp.json()["data"]
    assert {f["name"] for f in data["source_fields"]} == set(SUPPORTED_SOURCE_FIELDS)