from datetime import datetime, timezone, timedelta
import os
from enum import Enum
import numpy
import threading
import re

alarm_conf = {
    "retention_time": 60,
    "retention_keep_time": 30,
    "retention_alarm_time": 180,
    "toilet": {
        "retention_time": 60,
        "retention_keep_time": 30,
        "retention_alarm_time": 900
    }
}

# 系统配置
g_sys_conf_mtx = threading.Lock()
g_sys_conf = {
    "module_name": "LAS",
    "host_ip": "10.206.0.8",
    "platform": 0,          # 平台，0：windows本地，1：云服务器
    "sp_id": "",     # 服务程序id

    # 数据库相关参数
    "db_host": "localhost",
    "db_username": "root",
    "db_password": "Hfln@147888",

    # ssh
    "ssh_host": "119.45.12.173",
    "ssh_port": 22,
    "ssh_username": "root",
    "ssh_password": "Hfln@147888",
}

# 日志配置
g_log_conf_mtx = threading.Lock()
g_log_conf = {
    "module_name": "LAS",
    "log_path": "./log/",
    "log_lvl": 0,
    "max_log_size": 50 * 1024 * 1024,
    "max_log_files": 10,
}

# 日志文件锁
g_log_file_mtx = threading.Lock()


# 错误码定义
class EC(Enum):
    EC_SUCCESS      = 0     # 成功
    EC_FAILED       = -1    # 一般错误




# 获取当前utc时间（毫秒）
def get_utc_time_ms():
    now = datetime.now()
    utc_time = now.astimezone(timezone.utc)
    utc_timestamp_ms = int(utc_time.timestamp() * 1000)
    return utc_timestamp_ms

# 获取当前utc时间（秒）
def get_utc_time_s():
    now = datetime.now()
    utc_time = now.astimezone(timezone.utc)
    utc_timestamp_s = int(utc_time.timestamp())
    return utc_timestamp_s

# 获取当前北京时间（毫秒）
def get_bj_time_ms():
    now = datetime.now()
    return now.strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]

# 获取当前北京时间（秒）
def get_bj_time_s():
    now = datetime.now()
    return now.strftime("%Y-%m-%d %H:%M:%S")

# utc时间转北京时间（秒）
def utc_to_bj_s(utc_ts:int) -> str:
    utc_seconds = utc_ts
    utc_time = datetime.fromtimestamp(utc_seconds, tz=timezone.utc)
    bj_time = utc_time.astimezone(timezone(timedelta(hours=8)))

    return bj_time.strftime("%Y-%m-%d %H:%M:%S")

# 时区
UTC_TZ = timezone.utc
BJ_TZ  = timezone(timedelta(hours=8))


# 毫秒 UTC → 北京时间
def utc_to_bj_ms(utc_ms: int) -> str:
    dt_utc = datetime.fromtimestamp(utc_ms / 1000, tz=UTC_TZ)
    dt_bj  = dt_utc.astimezone(BJ_TZ)
    return dt_bj.strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]  # 保留毫秒

# 毫秒 北京时间 → UTC
def bj_to_utc_ms(bj_str: str) -> int:
    """
    bj_str 格式: "YYYY-MM-DD HH:MM:SS.sss"
    """
    dt_bj = datetime.strptime(bj_str, "%Y-%m-%d %H:%M:%S.%f")
    dt_bj = dt_bj.replace(tzinfo=BJ_TZ)
    dt_utc = dt_bj.astimezone(UTC_TZ)
    return int(dt_utc.timestamp() * 1000)

# 秒 UTC → 北京时间
def utc_to_bj_s(utc_s: int) -> str:
    dt_utc = datetime.fromtimestamp(utc_s, tz=UTC_TZ)
    dt_bj  = dt_utc.astimezone(BJ_TZ)
    return dt_bj.strftime("%Y-%m-%d %H:%M:%S")

# 秒 北京时间 → UTC
def bj_to_utc_s(bj_str: str) -> int:
    """
    bj_str 格式: "YYYY-MM-DD HH:MM:SS"
    """
    dt_bj = datetime.strptime(bj_str, "%Y-%m-%d %H:%M:%S")
    dt_bj = dt_bj.replace(tzinfo=BJ_TZ)
    dt_utc = dt_bj.astimezone(UTC_TZ)
    return int(dt_utc.timestamp())



# 控制日志文件数量
def manage_log_files(max_files, log_path:str):
    log_files = sorted(
        (f for f in os.listdir(log_path) if f.endswith(".log")),
        key=lambda x: os.path.getctime(os.path.join(log_path, x))
    )
    
    while len(log_files) > max_files:
        oldest_file = log_files.pop(0)
        os.remove(os.path.join(log_path, oldest_file))

# 打印日志
def LOG(text='', title=''):
    with g_log_conf_mtx:
        module_name     = g_log_conf["module_name"]
        log_path        = g_log_conf["log_path"]
        max_log_size    = g_log_conf["max_log_size"]
        max_files       = g_log_conf["max_log_files"]
    formatted_now = get_bj_time_ms()

    file = f"{module_name}.log"
    with g_log_file_mtx:
        log_file = os.path.join(log_path, file)

        # 检查日志文件大小并处理文件重命名
        if os.path.exists(log_file) and os.path.getsize(log_file) >= max_log_size:
            timestamp = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
            new_log_file = f"{log_path}{module_name}_{timestamp}.log"
            os.rename(log_file, new_log_file)

            # 控制日志文件数量
            manage_log_files(max_files, log_path)

        # 写入日志内容
        with open(log_file, 'a') as f:
            f.write('[%s][%s]:%s\n' % (formatted_now, title, text))

# DEBUG日志, 等级0
def LOGDBG(text=''):
    if g_log_conf["log_lvl"] <= 0:
        LOG(text=text, title="DEBUG")

# INFO日志，等级1
def LOGINFO(text=''):
    if g_log_conf["log_lvl"] <= 1:
        LOG(text=text, title="INFO")

# WARN日志，等级2
def LOGWARN(text=''):
    if g_log_conf["log_lvl"] <= 2:
        LOG(text=text, title="WARN")

# ERROR日志，等级3
def LOGERR(text=''):
    if g_log_conf["log_lvl"] <= 3:
        LOG(text=text, title="ERROR")



# 姿态分类
class POSE_CLASS_E(Enum):
    POSE_CLASS_3 = 3  # 3类
    POSE_CLASS_4 = 4  # 4类
    POSE_CLASS_5 = 5  # 5类
e_pose_class = POSE_CLASS_E.POSE_CLASS_4

# 姿态
class POSE_E(Enum):
    POSE_INVALID = -1 # 无效值
    POSE_0 = 0  # 躺(跌倒)
    POSE_1 = 1  # 坐在椅子上
    POSE_2 = 2  # 坐在地上
    POSE_3 = 3  # 蹲
    POSE_4 = 4  # 站
    POSE_5 = 5  # 坐
    POSE_6 = 6  # 躺在沙发上
    POSE_7 = 7  # 躺在其他

# 实时姿态
realtime_pose:int = POSE_E.POSE_0.value
pose_mutex = threading.Lock()



def get_tracker_targets(point_cloud:list):
    target_point = numpy.mean(point_cloud, axis=0).tolist()
    tracker_targets = []
    tracker_targets.append(target_point)
    return tracker_targets

# 获取目标target（多个点）
def get_tracker_targets_mult(point_cloud:list):
    target_point = numpy.mean(point_cloud, axis=0).tolist()
    tracker_targets = []
    tracker_targets.append(target_point)
    return tracker_targets



# 设备接入响应错误码
class DEV_EC(int):
    succeed         = 0 # 成功
    unauthorized    = 401   # 未授权
    forbidden       = 403   # 禁止访问，会话已过期
    conflict        = 409   # 冲突，重复提交


# 检查topic
def check_topic(pattern:str, topic:str) -> bool:
    return bool(re.match(pattern, topic))