"""统计模块 Blueprint。"""
from flask import Blueprint

stats_bp = Blueprint("insurance_stats", __name__)


@stats_bp.route("/overview", methods=["GET"])
def get_overview():
    """使用概览。"""
    from insurance.utils.response import success
    return success({
        "today_chats": 0,
        "active_users": 0,
        "kb_hit_rate": 0.0,
        "total_documents": 0,
    })


@stats_bp.route("/trend", methods=["GET"])
def get_trend():
    """趋势数据。"""
    from insurance.utils.response import success
    return success({"metric": "", "granularity": "day", "data": []})


@stats_bp.route("/kb-health", methods=["GET"])
def get_kb_health():
    """知识库健康度。"""
    from insurance.utils.response import success
    return success({
        "hot_questions": [],
        "missed_questions": [],
        "coverage": {},
    })