"""Dispatcher result aggregation: per-receiver detail must survive."""

from __future__ import annotations

from notify_bridge_core.notifications.dispatcher import NotificationDispatcher


def test_aggregate_all_success() -> None:
    out = NotificationDispatcher._aggregate_results([
        {"success": True, "message_id": 1},
        {"success": True, "message_id": 2},
    ])
    assert out["success"] is True
    assert out["receivers"] == 2
    assert out["successes"] == 2
    assert out["failures"] == 0


def test_aggregate_partial() -> None:
    out = NotificationDispatcher._aggregate_results([
        {"success": True},
        {"success": False, "error": "boom"},
    ])
    assert out["success"] is True  # at least one succeeded
    assert out["successes"] == 1
    assert out["failures"] == 1
    assert "boom" in out["errors"]
    assert "results" in out


def test_aggregate_all_fail_preserves_all_errors() -> None:
    out = NotificationDispatcher._aggregate_results([
        {"success": False, "error": "first"},
        {"success": False, "error": "second"},
    ])
    assert out["success"] is False
    assert out["error"] == "first"  # back-compat top-level field
    assert out["errors"] == ["first", "second"]
    # Per-receiver details survive — operator can see exactly what failed.
    assert len(out["results"]) == 2


def test_aggregate_empty() -> None:
    out = NotificationDispatcher._aggregate_results([])
    assert out["success"] is False
    assert "error" in out