"""구조화 로깅 기반 단위 테스트 (REQ-084, dcy-029 FR-1·FR-7)."""
import json
import logging

import pytest

from trex_core.runtime import logging_setup as ls


@pytest.fixture(autouse=True)
def _reset_corr():
    ls.set_correlation_id("")
    yield
    ls.set_correlation_id("")


def _record(msg="hello", level=logging.INFO, **extra):
    rec = logging.LogRecord("trex.test", level, __file__, 1, msg, None, None)
    for k, v in extra.items():
        setattr(rec, k, v)
    return rec


class TestTextFormatter:
    def test_has_iso8601_kst_timestamp_level_and_msg(self):
        out = ls.TextFormatter().format(_record("boot ok"))
        # ISO8601 with +09:00 KST offset, level, message
        assert "+09:00" in out
        assert "INFO" in out
        assert "boot ok" in out

    def test_includes_correlation_id_when_set(self):
        ls.set_correlation_id("slot-123")
        rec = _record("x")
        ls._CorrelationFilter().filter(rec)
        out = ls.TextFormatter().format(rec)
        assert "cid=slot-123" in out

    def test_omits_cid_when_unset(self):
        rec = _record("x")
        ls._CorrelationFilter().filter(rec)
        out = ls.TextFormatter().format(rec)
        assert "cid=" not in out


class TestJsonFormatter:
    def test_is_valid_json_with_required_keys(self):
        rec = _record("submitted")
        ls._CorrelationFilter().filter(rec)
        obj = json.loads(ls.JsonFormatter().format(rec))
        assert obj["msg"] == "submitted"
        assert obj["level"] == "INFO"
        assert obj["logger"] == "trex.test"
        assert "+09:00" in obj["ts"]
        assert obj["correlation_id"] == ""

    def test_correlation_id_propagates(self):
        ls.set_correlation_id("slot-9")
        rec = _record("y")
        ls._CorrelationFilter().filter(rec)
        obj = json.loads(ls.JsonFormatter().format(rec))
        assert obj["correlation_id"] == "slot-9"

    def test_extra_fields_included(self):
        rec = _record("z", symbol="005930")
        ls._CorrelationFilter().filter(rec)
        obj = json.loads(ls.JsonFormatter().format(rec))
        assert obj["symbol"] == "005930"


class TestConfigureAndContext:
    def test_configure_text_default(self, monkeypatch, capsys):
        monkeypatch.delenv("TREX_LOG_FORMAT", raising=False)
        ls.configure_logging(level=logging.INFO)
        logging.getLogger("trex.x").info("via root")
        err = capsys.readouterr().err
        assert "via root" in err and "INFO" in err and "+09:00" in err

    def test_configure_json_format(self, monkeypatch, capsys):
        monkeypatch.setenv("TREX_LOG_FORMAT", "json")
        ls.configure_logging(level=logging.INFO)
        with ls.correlation_id("slot-77"):
            logging.getLogger("trex.x").info("jsonline")
        line = [ln for ln in capsys.readouterr().err.splitlines() if "jsonline" in ln][-1]
        obj = json.loads(line)
        assert obj["msg"] == "jsonline"
        assert obj["correlation_id"] == "slot-77"
        # cleanup: restore text formatter for other tests
        monkeypatch.delenv("TREX_LOG_FORMAT", raising=False)
        ls.configure_logging(level=logging.INFO)

    def test_correlation_id_context_manager_restores(self):
        ls.set_correlation_id("outer")
        with ls.correlation_id("inner"):
            assert ls.get_correlation_id() == "inner"
        assert ls.get_correlation_id() == "outer"

    def test_configure_is_idempotent_single_handler(self):
        ls.configure_logging()
        ls.configure_logging()
        assert len(logging.getLogger().handlers) == 1