"""Tests for the Phase 4 alerts framework."""

from __future__ import annotations

import os
import tempfile
from pathlib import Path

import pytest

import atocore.config as _config


@pytest.fixture(autouse=True)
def isolated_env(monkeypatch):
    """Isolate alerts sinks per test."""
    tmpdir = tempfile.mkdtemp()
    log_file = Path(tmpdir) / "alerts.log"
    monkeypatch.setenv("ATOCORE_ALERT_LOG", str(log_file))
    monkeypatch.delenv("ATOCORE_ALERT_WEBHOOK", raising=False)

    # Data dir for any state writes
    monkeypatch.setenv("ATOCORE_DATA_DIR", tmpdir)
    _config.settings = _config.Settings()

    from atocore.models.database import init_db
    init_db()

    yield {"tmpdir": tmpdir, "log_file": log_file}


def test_emit_alert_writes_log_file(isolated_env):
    from atocore.observability.alerts import emit_alert

    emit_alert("warning", "test title", "test message body", context={"count": 5})

    content = isolated_env["log_file"].read_text(encoding="utf-8")
    assert "test title" in content
    assert "test message body" in content
    assert "WARNING" in content
    assert '"count": 5' in content


def test_emit_alert_invalid_severity_falls_back_to_info(isolated_env):
    from atocore.observability.alerts import emit_alert

    emit_alert("made-up-severity", "t", "m")
    content = isolated_env["log_file"].read_text(encoding="utf-8")
    assert "INFO" in content


def test_emit_alert_fails_open_on_log_write_error(monkeypatch, isolated_env):
    """An unwritable log path should not crash the emit."""
    from atocore.observability.alerts import emit_alert

    monkeypatch.setenv("ATOCORE_ALERT_LOG", "/nonexistent/path/that/definitely/is/not/writable/alerts.log")
    # Must not raise
    emit_alert("info", "t", "m")