import time
from collections import defaultdict

# Store logs (replace with DB later)
USAGE_LOGS = defaultdict(list)


def log_request(api_key: str, endpoint: str):
    USAGE_LOGS[api_key].append({
        "endpoint": endpoint,
        "time": int(time.time())
    })


def get_usage(api_key: str):
    return USAGE_LOGS.get(api_key, [])


def stats():
    report = {}
    for key, logs in USAGE_LOGS.items():
        report[key] = {
            "total_requests": len(logs),
            "last_used": logs[-1]["time"] if logs else None
        }
    return report