"""
Log monitoring tests — parse app log files for errors and anomalies.
Run with: pytest api/tests/qa/test_qa_logs_monitor.py
"""
import re

import pytest

pytestmark = pytest.mark.qa

# Log line format: 2026-03-23 07:57:12,691 | INFO | app.main | message
_MAX_WARNINGS = 50


def _read_lines(app_log_path):
    """Read log file lines, skipping gracefully if file is missing."""
    if app_log_path is None or not app_log_path.exists():
        pytest.skip("No log file available")
    return app_log_path.read_text(encoding="utf-8", errors="replace").splitlines()


# ---------------------------------------------------------------------------

def test_log_file_exists(app_log_path):
    """Log file path resolves to an existing file."""
    if app_log_path is None:
        pytest.skip("No log file configured")
    assert app_log_path.exists(), f"Log file not found: {app_log_path}"


def test_no_critical_errors(app_log_path, qa_issues):
    """No ERROR-level lines in the log."""
    lines = _read_lines(app_log_path)
    errors = [l for l in lines if "| ERROR |" in l]
    if errors:
        qa_issues.extend({"type": "log_error", "line": l} for l in errors)
    assert len(errors) == 0, (
        f"Found {len(errors)} ERROR line(s) in {app_log_path.name}:\n"
        + "\n".join(errors[:10])
    )


def test_no_oracle_errors(app_log_path, qa_issues):
    """No Oracle ORA- error codes in the log."""
    lines = _read_lines(app_log_path)
    ora_errors = [l for l in lines if "ORA-" in l]
    if ora_errors:
        qa_issues.extend({"type": "oracle_error", "line": l} for l in ora_errors)
    assert len(ora_errors) == 0, (
        f"Found {len(ora_errors)} ORA- error(s) in {app_log_path.name}:\n"
        + "\n".join(ora_errors[:10])
    )


def test_no_unhandled_exceptions(app_log_path, qa_issues):
    """No unhandled Python tracebacks in the log."""
    lines = _read_lines(app_log_path)
    tb_lines = [l for l in lines if "Traceback" in l]
    if tb_lines:
        qa_issues.extend({"type": "traceback", "line": l} for l in tb_lines)
    assert len(tb_lines) == 0, (
        f"Found {len(tb_lines)} Traceback(s) in {app_log_path.name}:\n"
        + "\n".join(tb_lines[:10])
    )


def test_no_import_failures(app_log_path, qa_issues):
    """No import failure messages in the log."""
    lines = _read_lines(app_log_path)
    pattern = re.compile(r"import failed|Order.*failed", re.IGNORECASE)
    failures = [l for l in lines if pattern.search(l)]
    if failures:
        qa_issues.extend({"type": "import_failure", "line": l} for l in failures)
    assert len(failures) == 0, (
        f"Found {len(failures)} import failure(s) in {app_log_path.name}:\n"
        + "\n".join(failures[:10])
    )


def test_warning_count_acceptable(app_log_path, qa_issues):
    """WARNING count is below acceptable threshold."""
    lines = _read_lines(app_log_path)
    warnings = [l for l in lines if "| WARNING |" in l]
    if len(warnings) >= _MAX_WARNINGS:
        qa_issues.append({
            "type": "high_warning_count",
            "count": len(warnings),
            "threshold": _MAX_WARNINGS,
        })
    assert len(warnings) < _MAX_WARNINGS, (
        f"Warning count {len(warnings)} exceeds threshold {_MAX_WARNINGS} "
        f"in {app_log_path.name}"
    )