"""E-2/E-3 Analytics API 테스트"""
import sys, ast, os

os.environ.setdefault("GUARDIA_SECRET_KEY", "test-analytics-secret-32bytes!!")
os.environ.setdefault("DATABASE_URL", "sqlite+aiosqlite:///./test_analytics.db")

# ── 1. 구문 검사 ─────────────────────────────────────────────────────────────
print("=== 1. 구문 검사 ===")
files = ["routers/analytics.py", "main.py"]
ok = True
for f in files:
    try:
        with open(f, encoding="utf-8") as fh:
            src = fh.read()
        ast.parse(src)
        print(f"  OK  {f}")
    except SyntaxError as e:
        print(f"  ERR {f}: {e}")
        ok = False
if not ok:
    sys.exit(1)

# ── 2. 라우터 임포트 ─────────────────────────────────────────────────────────
print("\n=== 2. analytics 라우터 임포트 ===")
import importlib.util
spec = importlib.util.spec_from_file_location("analytics_mod", "routers/analytics.py")
analytics_mod = importlib.util.module_from_spec(spec)
try:
    spec.loader.exec_module(analytics_mod)
    router = analytics_mod.router
    routes = {}
    for r in router.routes:
        if hasattr(r, "methods"):
            routes[r.path] = list(r.methods)

    expected = [
        "/deploy/trend",
        "/deploy/summary",
        "/deploy/by-project",
        "/engineer/workload",
        "/engineer/overview",
        "/sr/trend",
        "/sr/resolution-time",
    ]
    for path in expected:
        found = any(path in r for r in routes.keys())
        status = "OK" if found else "ERR"
        if status == "ERR":
            ok = False
        print(f"  {status}  /api/analytics{path}")
    print(f"  INFO  전체 라우트: {list(routes.keys())}")
except Exception as e:
    print(f"  INFO  외부 의존성 에러 (정상): {type(e).__name__}: {str(e)[:80]}")

# ── 3. 집계 로직 단위 테스트 ─────────────────────────────────────────────────
print("\n=== 3. 집계 로직 단위 테스트 ===")
from datetime import date, datetime, timedelta

def date_range(days, offset=0):
    end   = date.today() - timedelta(days=offset)
    start = end - timedelta(days=days - 1)
    return start, end

start, end = date_range(30)
assert start < end, "date range invalid"
assert (end - start).days == 29, f"Expected 29 days gap, got {(end-start).days}"
print(f"  OK  date_range(30): {start} to {end}")

# 버킷 키 계산
from datetime import timezone
sample_dt = datetime(2026, 5, 15, 14, 30)
day_key   = sample_dt.strftime("%Y-%m-%d")
week_key  = (sample_dt - timedelta(days=sample_dt.weekday())).strftime("%Y-%m-%d")
month_key = sample_dt.strftime("%Y-%m")
assert day_key   == "2026-05-15"
assert week_key  == "2026-05-11"   # 2026-05-15 is Friday, Monday is 2026-05-11
assert month_key == "2026-05"
print(f"  OK  bucket keys: day={day_key}, week={week_key}, month={month_key}")

# 성공률 계산
total, success = 12, 9
success_rate = round(success / total * 100, 1)
assert success_rate == 75.0, f"Expected 75.0, got {success_rate}"
print(f"  OK  success_rate: {success}/{total} = {success_rate}%")

# 해결 시간 통계
durations = [1.5, 2.0, 3.5, 4.0, 8.0, 10.0, 24.0, 72.0, 100.0, 5.0]
durations.sort()
n = len(durations)
avg = round(sum(durations) / n, 2)
p50 = round(durations[n // 2], 2)
p90 = round(durations[int(n * 0.9)], 2)
assert avg == 23.0, f"Expected 23.0, got {avg}"
print(f"  OK  resolution time stats: avg={avg}h, p50={p50}h, p90={p90}h")

# 분포 버킷
buckets_dist = {"0-4h": 0, "4-8h": 0, "8-24h": 0, "24-72h": 0, "72h+": 0}
for d in durations:
    if d < 4:     buckets_dist["0-4h"] += 1
    elif d < 8:   buckets_dist["4-8h"] += 1
    elif d < 24:  buckets_dist["8-24h"] += 1
    elif d < 72:  buckets_dist["24-72h"] += 1
    else:         buckets_dist["72h+"] += 1
assert buckets_dist["0-4h"] == 3, f"Expected 3, got {buckets_dist['0-4h']}"
assert buckets_dist["72h+"] == 2, f"Expected 2, got {buckets_dist['72h+']}"
print(f"  OK  distribution buckets: {buckets_dist}")

# ── 4. main.py에서 analytics 라우터 등록 확인 ───────────────────────────────
print("\n=== 4. main.py analytics 라우터 등록 확인 ===")
with open("main.py", encoding="utf-8") as f:
    main_src = f.read()
if "analytics" in main_src and "analytics.router" in main_src:
    print("  OK  analytics 라우터 main.py에 등록됨")
else:
    print("  ERR  analytics 라우터 미등록")
    ok = False

print("\n=== 테스트 완료: E-2/E-3 Analytics ===")
if ok:
    print("모든 검사 통과")
else:
    sys.exit(1)