import logging
import time
from fastapi import FastAPI
from fastapi.testclient import TestClient

from _shared.access_log import (
    AccessLogMiddleware,
    BufferLogHandler,
    router as logs_router,
    install,
    _BUFFER,
)


def _reset_buffer():
    _BUFFER.clear()


def test_access_middleware_records_request():
    _reset_buffer()
    app = FastAPI()
    app.add_middleware(AccessLogMiddleware)

    @app.get("/api/lotto/recommend")
    def recommend():
        return {"ok": True}

    client = TestClient(app)
    client.get("/api/lotto/recommend")

    items = [x for x in _BUFFER if x["source"] == "access"]
    assert len(items) == 1
    assert items[0]["method"] == "GET"
    assert items[0]["path"] == "/api/lotto/recommend"
    assert items[0]["status"] == 200
    assert items[0]["ms"] >= 0


def test_access_middleware_skips_health():
    _reset_buffer()
    app = FastAPI()
    app.add_middleware(AccessLogMiddleware)

    @app.get("/health")
    def health():
        return {"ok": True}

    client = TestClient(app)
    client.get("/health")

    items = [x for x in _BUFFER if x["source"] == "access"]
    assert items == []


def test_access_middleware_skips_options():
    _reset_buffer()
    app = FastAPI()
    app.add_middleware(AccessLogMiddleware)

    @app.get("/api/lotto/recommend")
    def recommend():
        return {"ok": True}

    client = TestClient(app)
    client.options("/api/lotto/recommend")

    items = [x for x in _BUFFER if x["source"] == "access"]
    assert items == []


def test_buffer_log_handler_captures_logger_info():
    _reset_buffer()
    root = logging.getLogger("")
    handler = BufferLogHandler()
    root.addHandler(handler)
    try:
        lg = logging.getLogger("lotto.test")
        lg.setLevel(logging.INFO)
        lg.info("뉴스 스크래핑 완료: 국내 12건")
    finally:
        root.removeHandler(handler)

    items = [x for x in _BUFFER if x["source"] == "log"]
    assert len(items) == 1
    assert items[0]["message"] == "뉴스 스크래핑 완료: 국내 12건"
    assert items[0]["level"] == "info"
    assert items[0]["logger"] == "lotto.test"


def test_logs_recent_endpoint_returns_recent_items():
    _reset_buffer()
    app = FastAPI()
    install(app)

    @app.get("/api/lotto/recommend")
    def recommend():
        return {"ok": True}

    client = TestClient(app)
    client.get("/api/lotto/recommend")
    client.get("/api/lotto/recommend")
    client.get("/health")  # 제외되어야 함

    resp = client.get("/logs/recent")
    assert resp.status_code == 200
    logs = resp.json()["logs"]
    access_items = [x for x in logs if x["source"] == "access"]
    assert len(access_items) == 2


def test_logs_recent_with_since_filter():
    _reset_buffer()
    app = FastAPI()
    install(app)

    @app.get("/api/lotto/recommend")
    def recommend():
        return {"ok": True}

    client = TestClient(app)
    client.get("/api/lotto/recommend")
    time.sleep(0.01)
    cursor_resp = client.get("/logs/recent")
    cursor_ts = cursor_resp.json()["logs"][-1]["ts"]
    client.get("/api/lotto/recommend")

    resp = client.get(f"/logs/recent?since={cursor_ts}")
    items = [x for x in resp.json()["logs"] if x["source"] == "access"]
    assert len(items) == 1