from ldap3 import Server,Connection,HASHED_MD5,MODIFY_REPLACE,ServerPool
from ldap3.utils.hashed import hashed
from re import match,findall
from requests import  post



def send_mail(to_aadr,content):
    url = 'http://new.lmzdx.me:8000/send_mail/'
    data = {'to':to_aadr,'content':f'{content}'}
    post(url,data)
class ldap_control:
    def __init__(self,LDAP_CONFIG):


        """

        LDAP_CONFIG ={ "port" : "389",

        "host":"example.com",

        "admin_dn" :"cn=admin,dc=example,dc=com",

        "admin_passwd" : "tttttttt",

        "user_dn" : "dc=example,dc=com"}


        """


        self.user_dn,self.admin_dn,self.admin_passwd,self.host,self.port = LDAP_CONFIG["user_dn"],LDAP_CONFIG["admin_dn"],LDAP_CONFIG["admin_passwd"],LDAP_CONFIG["host"],LDAP_CONFIG["port"]



        self.s = Server(host = self.host,port = self.port)
        self.c = Connection(self.s,user = self.admin_dn,password = self.admin_passwd,auto_bind=True)
        print(self.s.check_availability())
    def keep(self):
        if (self.s.check_availability() != True):
            self.s = Server(host = self.host,port = self.port)
            self.c = Connection(self.s,user = self.admin_dn,password = self.admin_passwd,auto_bind=True)

    def result(self):
        print(self.c.result)
    def name_to_mail(self,name):
        self.c.search(self.user_dn,search_filter=f'(cn={name})')
        s = str(self.c.entries)
        mail = findall('(?<=mail\=).*?(?=,)',s)
        print(mail)
        return mail[0]

    def mail_to_username(self,mail):
        #检查邮箱
        self.c.search(self.user_dn,search_filter=f"(mail={mail})")

        s = str(self.c.entries)

        name = findall('(?<=\=).*?(?=,)',s)
        print(name[0])
        return  name[0]
    def select_email_or_name(self,str):
        """
        判断 输入为用户名还是邮箱
        :param str: 用户输入
        :return: ldap 查询用数据

        """
        if '@' in str :
            result = f'mail={str}'
        else:
            result = f'cn={str}'

        return result

    def check_in(self,username,email):
        username = self.select_email_or_name(username)
        email = self.select_email_or_name(email)
        self.c.search(self.user_dn,f'({username})')

        if (self.c.entries == []):
            self.c.search(self.user_dn,f'({email})')
            if (self.c.entries == []):
                return 1
        else:
            return 0

    def add_user(self,username,email,description,passwd):
        """

        :param username:
        :param email:
        :param description:
        :return: 1,成功 0，失败
        """
        self.keep()
        if self.check_in(username,email) == 0:
            return 0
        att ={"cn":f'{username}',
              "Mail":f"{email}",
              "sn":f"{description}",
              "userPassword":""
              }
        #try:

        self.c.add(dn = f'cn={username},{self.user_dn}', object_class=['inetOrgPerson', 'top'], attributes=att)
        self.reset_passwd(username,passwd)


        return 1
        #except:
            #return 0


    def reset_passwd(self,username,newpasswd):
        """

        通过用户名 (CN) 或邮箱（mail）重置密码
        :param username:
        :param newpasswd:
        :return:  1 成功 0 失败
        """
        self.keep()
        print(f'username:{username}')

        user_dn = f'cn={username},{self.user_dn}'


        hashed_password = hashed(HASHED_MD5, newpasswd)

        changes = {
            'userPassword': [(MODIFY_REPLACE, [hashed_password])]
        }
        #try:
        self.c.modify(user_dn, changes=changes)
        print(self.c.result)
        return 1
        #except:
            #return 0

class User :
    def __init__(self,user_info):
        self.name = user_info['user_name']
        self.mail = user_info['email']
        if self.check_user() == 0:
            return(0)

        self.passwd = user_info['password']
        self.description = user_info['description']




    def check_user(self):
        if self.name.isalnum() :
            if match(r"^[A-Za-z0-9\.\+_-]+@[A-Za-z0-9\._-]+\.[a-zA-Z]*$", self.mail):
                return 1
            else:
                return 0
        else:
            return 0




    def creat_ldap_account(self,ldap_control):
        ldap_control.add_user(self.name,self.mail,self.description,self.passwd)