"""Tests for the roster-sync Lambda handler."""

from unittest.mock import MagicMock

import pytest


@pytest.fixture
def env(monkeypatch):
    monkeypatch.setenv("TCX_SECRET_PREFIX", "afterhours-shift-manager/3cx-")


@pytest.fixture
def fake_3cx(rostersync_app, monkeypatch):
    """Patch ThreeCXClient + get_secret. Returns a setter for group members."""
    client = MagicMock(name="ThreeCXClient")
    monkeypatch.setattr(rostersync_app, "ThreeCXClient", MagicMock(return_value=client))
    monkeypatch.setattr(rostersync_app, "get_secret", lambda _id: "secret")

    def set_members(members):
        client.get_group_members.return_value = members

    return set_members


def test_adds_removes_and_preserves_links(
    rostersync_app, schedule, seed, env, fake_3cx
):
    seed.roster("114", "Alice", slack_user_id="U_ALICE")
    seed.roster("115", "Bob", slack_user_id="U_BOB")  # departs
    fake_3cx(
        [
            {"Number": "114", "MemberName": "Alice", "Type": "Extension"},
            {"Number": "116", "MemberName": "New Person", "Type": "Extension"},
            {
                "Number": "117",
                "MemberName": "Voicemail",
                "Type": "Extension",
            },  # excluded
            {
                "Number": "118",
                "MemberName": "Reception",
                "Type": "RingGroup",
            },  # excluded
        ]
    )

    result = rostersync_app.handler({"force": True}, None)

    # 116 added, 115 removed, 117/118 ignored.
    assert any("116" in a for a in result["added"])
    assert any("115" in r for r in result["removed"])
    assert schedule.get_employee_by_extension("116")["name"] == "New Person"
    assert schedule.get_employee_by_extension("115") is None
    assert schedule.get_employee_by_extension("117") is None
    # Existing link preserved.
    assert schedule.get_employee_by_extension("114")["slack_user_id"] == "U_ALICE"


def test_renames_changed_member_preserving_link(
    rostersync_app, schedule, seed, env, fake_3cx
):
    seed.roster("114", "Alice", slack_user_id="U_ALICE")
    fake_3cx([{"Number": "114", "MemberName": "Alicia", "Type": "Extension"}])

    result = rostersync_app.handler({"force": True}, None)

    assert any("114" in u for u in result["updated"])
    emp = schedule.get_employee_by_extension("114")
    assert emp["name"] == "Alicia"
    assert emp["slack_user_id"] == "U_ALICE"


def test_empty_3cx_result_does_not_wipe_roster(
    rostersync_app, schedule, seed, env, fake_3cx
):
    seed.roster("114", "Alice", slack_user_id="U_ALICE")
    fake_3cx([])

    result = rostersync_app.handler({"force": True}, None)

    assert result["removed"] == []
    assert schedule.get_employee_by_extension("114") is not None


def test_skips_when_wrong_hour_and_not_forced(rostersync_app, env, fake_3cx):
    import freezegun

    # 12:00 UTC = 08:00 ET, not 6am → skip.
    with freezegun.freeze_time("2026-06-01 12:00:00"):
        assert rostersync_app.handler({}, None) == {"skipped": True}