"""
Result cards must show the account's name and Elev/Ansat role.

Regression: profiles saved by the profile editor stored bare id strings, and
scheduled scans pass those straight to run_scan, which normalised them to
displayName=<id>, userRole="other" — so cards showed the GUID as the name and
no role badge. run_scan now looks bare accounts up in the directory.
"""
from __future__ import annotations
from unittest.mock import MagicMock

import pytest

import scan_engine


class _Conn:
    """Directory stub: list_users + role classification + single lookups."""

    def __init__(self, directory=None, extra=None, list_fails=False):
        self.directory = directory or []
        self.extra = extra or {}          # users only reachable via lookup_user
        self.list_fails = list_fails
        self.list_calls = 0
        self.lookups: list[str] = []

    def list_users(self):
        self.list_calls += 1
        if self.list_fails:
            raise RuntimeError("Authorization_RequestDenied")
        return list(self.directory)

    def build_role_sku_map(self, users):
        return {"sku-staff": "STANDARDWOFFPACK_FACULTY", "sku-stud": "STANDARDWOFFPACK_STUDENT"}

    def classify_user_role(self, assigned_licenses, sku_map):
        names = {sku_map.get(l.get("skuId", ""), "") for l in assigned_licenses}
        if any("FACULTY" in n for n in names):
            return "staff"
        if any("STUDENT" in n for n in names):
            return "student"
        return "other"

    def lookup_user(self, uid):
        self.lookups.append(uid)
        if uid in self.extra:
            return self.extra[uid]
        raise RuntimeError("Request_ResourceNotFound")


DIRECTORY = [
    {"id": "guid-henrik", "displayName": "Henrik Højmark", "mail": "henrik@school.dk",
     "assignedLicenses": [{"skuId": "sku-staff"}]},
    {"id": "guid-elna", "displayName": "Elna Sofie", "mail": "elna@school.dk",
     "assignedLicenses": [{"skuId": "sku-stud"}]},
]


def _bare(uid):  # what run_scan makes of a bare id string
    return {"id": uid, "displayName": uid, "userRole": "other"}


class TestEnrichBareUsers:
    def test_bare_ids_get_name_and_role_from_directory(self):
        out = scan_engine._enrich_bare_users(_Conn(DIRECTORY), [_bare("guid-henrik"), _bare("guid-elna")])
        assert out == [
            {"id": "guid-henrik", "displayName": "Henrik Højmark", "userRole": "staff"},
            {"id": "guid-elna", "displayName": "Elna Sofie", "userRole": "student"},
        ]

    def test_named_accounts_untouched_and_directory_not_listed(self):
        conn = _Conn(DIRECTORY)
        users = [{"id": "guid-henrik", "displayName": "Henrik Højmark", "userRole": "staff"}]
        assert scan_engine._enrich_bare_users(conn, users) == users
        assert conn.list_calls == 0  # no directory call when nothing is bare

    def test_existing_role_is_kept(self):
        # e.g. a role the UI already knew — only a missing ("other") role is filled
        out = scan_engine._enrich_bare_users(
            _Conn(DIRECTORY), [{"id": "guid-elna", "displayName": "guid-elna", "userRole": "staff"}])
        assert out[0]["displayName"] == "Elna Sofie" and out[0]["userRole"] == "staff"

    def test_account_outside_member_list_is_looked_up(self):
        extra = {"guid-guest": {"id": "guid-guest", "displayName": "Gæst Lærer", "mail": "g@school.dk",
                                "assignedLicenses": [{"skuId": "sku-staff"}]}}
        conn = _Conn(DIRECTORY, extra=extra)
        out = scan_engine._enrich_bare_users(conn, [_bare("guid-guest")])
        assert out == [{"id": "guid-guest", "displayName": "Gæst Lærer", "userRole": "staff"}]
        assert conn.lookups == ["guid-guest"]

    def test_directory_list_unavailable_falls_back_to_lookup(self):
        extra = {"guid-henrik": DIRECTORY[0]}
        out = scan_engine._enrich_bare_users(_Conn(list_fails=True, extra=extra), [_bare("guid-henrik")])
        assert out[0]["displayName"] == "Henrik Højmark"

    def test_unknown_account_keeps_what_it_had(self):
        out = scan_engine._enrich_bare_users(_Conn(DIRECTORY), [_bare("guid-gone")])
        assert out == [_bare("guid-gone")]


class TestBuildRoleSkuMap:
    def _conn(self):
        from m365_connector import M365Connector
        return M365Connector.__new__(M365Connector)  # no auth needed for these calls

    def test_merges_tenant_and_per_user_skus(self, monkeypatch):
        conn = self._conn()
        monkeypatch.setattr(conn, "get_subscribed_skus", lambda: {"a": "ADMIN_SKU"})
        monkeypatch.setattr(conn, "build_sku_map_from_users", lambda users: {"b": "FACULTY_SKU"})
        assert conn.build_role_sku_map([{"id": "x"}]) == {"a": "ADMIN_SKU", "b": "FACULTY_SKU"}

    def test_never_raises(self, monkeypatch):
        conn = self._conn()
        def _boom(*a, **kw): raise RuntimeError("403")
        monkeypatch.setattr(conn, "get_subscribed_skus", _boom)
        monkeypatch.setattr(conn, "build_sku_map_from_users", _boom)
        assert conn.build_role_sku_map([]) == {}


class TestUsersRouteUsesSharedMap:
    def test_api_users_classifies_with_build_role_sku_map(self, monkeypatch):
        import gdpr_scanner
        from routes import state
        import routes.users as users_mod
        monkeypatch.setattr(users_mod, "_load_role_overrides", lambda: {})
        conn = MagicMock()
        conn.is_app_mode = True
        conn.list_users.return_value = DIRECTORY
        conn.build_role_sku_map.return_value = {"sku-staff": "X_FACULTY"}
        conn.classify_user_role.side_effect = lambda lic, m: "staff" if m else "other"
        monkeypatch.setattr(state, "connector", conn)
        gdpr_scanner.app.config["TESTING"] = True
        with gdpr_scanner.app.test_client() as c:
            data = c.get("/api/users").get_json()
        conn.build_role_sku_map.assert_called_once_with(DIRECTORY)
        assert {u["userRole"] for u in data["users"]} == {"staff"}


class TestRunScanNamesBareIds:
    def test_scheduled_style_bare_ids_are_named_in_the_scan(self, monkeypatch):
        """End to end: bare id strings (as a scheduled scan passes them) reach the
        per-user collection with their real name."""
        from routes import state
        import sse
        sent = []
        monkeypatch.setattr(scan_engine, "broadcast", lambda ev, data: sent.append((ev, data)))
        monkeypatch.setattr(scan_engine, "DB_OK", False)
        monkeypatch.setattr(scan_engine, "_load_checkpoint", lambda key, **kw: None)
        monkeypatch.setattr(scan_engine, "_save_checkpoint", lambda *a, **kw: None)
        monkeypatch.setattr(scan_engine, "_clear_checkpoint", lambda **kw: None)
        monkeypatch.setattr(scan_engine, "_load_role_overrides", lambda: {})
        monkeypatch.setattr(state, "flagged_items", [])
        stub = _Conn(DIRECTORY)
        conn = MagicMock()
        conn.is_app_mode = True
        conn.list_users.side_effect = stub.list_users
        conn.build_role_sku_map.side_effect = stub.build_role_sku_map
        conn.classify_user_role.side_effect = stub.classify_user_role
        conn.list_all_mail_folders_for.return_value = []
        monkeypatch.setattr(state, "connector", conn)
        saved = sse._current_scan_id
        try:
            scan_engine.run_scan({"sources": ["email"], "options": {},
                                  "user_ids": ["guid-henrik", "guid-elna"]})
        finally:
            sse._current_scan_id = saved
        phases = " | ".join(d.get("phase", "") for e, d in sent if e == "scan_phase")
        assert "Henrik Højmark" in phases and "Elna Sofie" in phases
        assert "guid-henrik" not in phases