# 文件声明了封装用户信息表相关的数据表操作
import copy
from common.dbORMType import stuTbUser
from common.generalFunc import CCommon
from sqliteModule.sqlite_db import g_dbInst

# 用户类别  int ---> string
def _int2str_usertype(userType: int) -> str:
    from msg_dict import g_uiCtrlScript
    if 0 == userType:
        strRet = g_uiCtrlScript['CTRL_USER_TYPE_ADMIN']
    elif 1 == userType:
        strRet = g_uiCtrlScript['CTRL_USER_TYPE_TECH']
    else:
        strRet = g_uiCtrlScript['CTRL_USER_TYPE_OP']
    return strRet

class CTbUserMgt:
    # public:
    def __init__(self):
        self._m_tbName = 't_user'   
        self._m_record = []      # 存储表中记录，每条记录是一个stuTbUser类型
        self._m_error: str = ''  # 存储反馈的错误信息
        self._getAllUserInfo()   # 读取所有用户信息

    # 创建用户
    def addNewUser(self, userID: str, userType: int) -> bool:
        key_list = list(stuTbUser.keys())
        strSqlCmd = ('INSERT INTO ' + self._m_tbName + '(' + key_list[0] + ',' +
                     key_list[1] + ',' + key_list[3] + ') VALUES (?, ?, ?)')
        strTime = CCommon.fnGetCurrentTime()        # 获取当前时间用于记录用户创建
        bRes = g_dbInst.execute_sql(strSqlCmd, (userID, userType, strTime))
        if bRes:    # 更新到用户信息缓存
            stuTbUser[key_list[0]] = userID
            stuTbUser[key_list[1]] = userType
            stuTbUser[key_list[3]] = strTime
            other = copy.deepcopy(stuTbUser)
            self._m_record.append(other)
        return bRes
    
    # 修改密码
    def changePasswd(self, userID: str, userPasswd: str) -> bool:
        keys_list = list(stuTbUser.keys())    # 转换为列表
        strSqlCmd = 'UPDATE ' + self._m_tbName + ' SET ' + keys_list[2] + ' = ? WHERE ' + keys_list[0] + ' = ?'
        bRes = g_dbInst.execute_sql(strSqlCmd, (userPasswd, userID))
        if bRes and self._m_record:
            for user in self._m_record:
                if userID == user[keys_list[0]]:
                    user[keys_list[2]] = userPasswd
                    break
        return bRes    


    # 删除用户
    def delUser(self, userID: list[str]) -> bool:
        if not userID:
            return False
        
        # 使用 IN 语句支持批量删除
        keys_list = list(stuTbUser.keys())
        placeholders = ','.join(['?'] * len(userID))
        strSqlCmd = f'DELETE FROM {self._m_tbName} WHERE {keys_list[0]} IN ({placeholders})'
        
        bRes = g_dbInst.execute_sql(strSqlCmd, tuple(userID))
        
        # 删除成功了，要同步更新到缓存
        if bRes and self._m_record:
            nTotal = len(self._m_record)
            nScan = 0
            while nScan < nTotal:
                user_id = list(self._m_record[nScan].items())[0][1]
                if user_id in userID:
                    del self._m_record[nScan]
                    nTotal -= 1
                    continue
                nScan += 1

        return bRes

    # 读取指定用户密码
    def getPasswdByUserID(self, userID: str) -> str:
        strRes = None
        if self._m_record:
            for user in self._m_record:
                lstSingle = list(user.items())
                if userID == lstSingle[0][1]:
                    strRes = lstSingle[2][1]
                    break
        return strRes

    # 读取所有用户id
    def readAllUserIDs(self) -> list:
        lstRet = []
        if self._m_record:
            for item in self._m_record:
                lstRet.append(list(item.items())[0][1])
        return lstRet

    # 读取除管理员以外其他用户的id， 类别和创建日期
    def readUserId_type_date(self) -> list[tuple[str, str, str]]:
        lstRet = []
        if self._m_record:
            for user in self._m_record:
                lstSingle = list(user.items())
                # 只添加非管理员用户（用户类型不等于0）
                if lstSingle[1][1] != 0:
                    # 使用_int2str_usertype转换用户类别为字符串
                    user_type_str = _int2str_usertype(lstSingle[1][1])
                    singleItem = (lstSingle[0][1], user_type_str, lstSingle[3][1])
                    lstRet.append(singleItem)
        return lstRet

    # 根据用户id获取其用户类别
    def getUserTypeById(self, userID: str) -> str:
        strRet = None
        if self._m_record:
            for item in self._m_record:
                lstSingle = list(item.items())
                if userID == lstSingle[0][1]:
                    strRet = _int2str_usertype(lstSingle[1][1])
                    break
        return strRet

    # -------------------------------------------
    # 获取错误信息
    def getLastError(self) -> str:
        return self._m_error

    # private:
    # 一次读取所有用户信息，包括id， 类别，密码，创建日期
    def _getAllUserInfo(self) -> None:
        strSqlCmd = 'SELECT * FROM ' + self._m_tbName
        allUsers = g_dbInst.fetch_all(strSqlCmd)
        if allUsers:
            theField = list(stuTbUser.keys())
            for user in allUsers:
                stuTbUser[theField[0]] = user[0]
                stuTbUser[theField[1]] = user[1]
                stuTbUser[theField[2]] = user[2]
                stuTbUser[theField[3]] = user[3]
                other = copy.deepcopy(stuTbUser)
                self._m_record.append(other)

# **************************************************************
g_userCtrl = CTbUserMgt()       # 全局对象实例