diff --git a/auth-sample b/auth-sample
index 737f0b3..92aaec9 100644
--- a/auth-sample
+++ b/auth-sample
@@ -1,3 +1,4 @@
-2020111222
-Bistu111222
-192.168.211.3
+[DEFAULT]
+username = 2020000000
+password = Bistu000000
+host = 192.168.211.3
diff --git a/bistu_wifi/__init__.py b/bistu_wifi/__init__.py
new file mode 100644
index 0000000..79382cc
--- /dev/null
+++ b/bistu_wifi/__init__.py
@@ -0,0 +1,2 @@
+from .bistu_wifi import login
+from .bistu_wifi import logout
diff --git a/bistu_wifi/__main__.py b/bistu_wifi/__main__.py
new file mode 100644
index 0000000..898a053
--- /dev/null
+++ b/bistu_wifi/__main__.py
@@ -0,0 +1,86 @@
+#!/usr/bin/python3
+
+import os
+import logging
+import configparser
+import argparse
+from bistu_wifi.bistu_wifi import logger
+from bistu_wifi.bistu_wifi import login
+from bistu_wifi.bistu_wifi import logout
+
+
+if 'XDG_CONFIG_HOME' in os.environ:
+    XDG_CONFIG_HOME = os.environ['XDG_CONFIG_HOME']
+else:
+    XDG_CONFIG_HOME = os.path.join(os.environ['HOME'], '.config')
+
+DEFAULT_HOST = '10.1.206.13'
+DEFAULT_CONFIG_LOCATION = os.path.join(XDG_CONFIG_HOME, 'bistu-wifi/auth.ini')
+
+
+def main():
+
+    parser = argparse.ArgumentParser()
+    parser.description = 'login or logout bistu wifi'
+
+    parser.add_argument('-u', '--username', nargs='?',
+                        type=str, help='username you use to login bistu wifi')
+    parser.add_argument('-p', '--password', nargs='?',
+                        type=str, help='password you use to login bistu wifi')
+    parser.add_argument('--host', nargs='?', default=None,
+                        type=str, help='host to send login/logout request to, default use 10.1.206.13')
+    parser.add_argument('-o', '--logout', action='store_true',
+                        help='logout bistu wifi. try to login if not privided')
+    parser.add_argument('-c', '--config', nargs='?', default=DEFAULT_CONFIG_LOCATION,
+                        type=str, help='load info(username, password, host) from config file')
+    parser.add_argument('--notime', action='store_true',
+                        help='don\'t output time field in log')
+
+    args = parser.parse_args()
+
+    log_level = logging.DEBUG if 'BISTU_WIFI_DEBUG' in os.environ else logging.INFO
+    log_fmt = '%(levelname)s : %(funcName)s : %(message)s'
+    if not args.notime:
+        log_fmt = '%(asctime)s : ' + log_fmt
+
+    logging.basicConfig(level=log_level, format=log_fmt)
+
+    username = None
+    password = None
+    host = DEFAULT_HOST
+    is_logout = False
+
+    if args.config is not None:
+        logger.info('loading info from config file %s ...', args.config)
+
+        config = configparser.ConfigParser()
+        config.read(args.config)
+
+        d_section = config['DEFAULT']
+
+        username = str(d_section['username']) if 'username' in d_section else username
+        password = str(d_section['password']) if 'password' in d_section else password
+        host     = str(d_section['host'])     if 'host'     in d_section else host
+
+    username = args.username if args.username is not None else username
+    password = args.password if args.password is not None else password
+    host     = args.host     if args.host     is not None else host
+
+    is_logout   = args.logout
+
+    logger.info('parameter status: username = %s', username)
+    logger.info('parameter status: password = %s', None if password is None else '*' * len(password))
+    logger.info('parameter status: host     = %s', host)
+    logger.info('parameter status: logout   = %s', is_logout)
+
+    if is_logout:
+        logout(host)
+    else:
+        if username is None or password is None:
+            logger.error('cannot login wifi without username or password')
+        else:
+            login(username, password, host)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/bistu_wifi/bistu_wifi.py b/bistu_wifi/bistu_wifi.py
new file mode 100644
index 0000000..7879c18
--- /dev/null
+++ b/bistu_wifi/bistu_wifi.py
@@ -0,0 +1,112 @@
+#!/usr/bin/python3
+
+import urllib.parse
+import urllib.request
+import urllib.response
+import logging
+import re
+
+
+logger = logging.getLogger('bistu-wifi')
+
+
+def generate_post_data(username: str, password: str):
+    '''
+    Generate bytes to send to through HTTP POST, an example from browser:
+
+    DDDDD=2021020000&upass=Bistu000000&R1=0&R2=&R3=0&R6=0&para=00&0MKKey=123456&buttonClicked=&redirect_url=&err_flag=&username=&password=&user=&cmd=&Login=
+    '''
+
+    data_template = {
+        'DDDDD': None,
+        'upass': None,
+        'R1': 0,
+        'R2': '',
+        'R3': 0,
+        'R6': 0,
+        'para': 00,
+        '0MKKey': 123456,
+        'buttonClicked': '',
+        'redirect_url': '',
+        'err_flag': '',
+        'username': '',
+        'password': '',
+        'user': '',
+        'cmd': '',
+        'Login': ''
+    }
+
+    data_template['DDDDD'] = username
+    data_template['upass'] = password
+
+    # login_manager.generate_post_data_hook(data_template)
+
+    for k, v in data_template.items():
+        logger.debug('the generated post data: %s: %s', k, v)
+
+    return bytes(urllib.parse.urlencode(data_template), 'utf-8')
+
+
+def login(username: str, password: str, host: str):
+    '''
+    There are some other host, the known are:
+
+    - 10.1.206.3 (default)
+    - 192.168.211.3
+    '''
+
+    login_url = f'http://{host}/a70.htm'
+
+    headers = {
+        'Content-Type': 'application/x-www-form-urlencoded',
+        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8',
+        'Accept-Language': 'en-US,zh-CN;q=0.5',
+        'Accept-Encoding': 'gzip, deflate'
+    }
+
+    post_data = generate_post_data(username, password)
+
+    logger.debug('the dest url is: %s', login_url)
+    for k, v in headers.items():
+        logger.debug('the headers: %s: %s', k, v)
+    logger.debug('the encoded post data: %s', str(post_data))
+
+    req = urllib.request.Request(url=login_url, data=post_data, headers=headers, method='POST')
+
+    logger.info('sending the login request...')
+
+    with urllib.request.urlopen(req) as response:
+        response_body = response.read().decode('gbk')
+
+        html_title = re.search('<title>(.*)</title>', response_body)[1]
+
+        logger.info('http_status: %d', response.status)
+        logger.info('title_of_response_html: %s', html_title)
+        logger.info('login_state: %s', 'success' if html_title == '认证成功页' else 'fail')
+
+
+def logout(host: str):
+    '''
+    param host: see login host
+    '''
+
+    logout_url = f'http://{host}/F.htm'
+    req = urllib.request.Request(url=logout_url)
+
+    logger.info('sending the logout request...')
+
+    with urllib.request.urlopen(req) as response:
+        response_body = response.read().decode('gbk')
+
+        html_title = re.search('<title>(.*)</title>', response_body)[1]
+
+        logger.info('http_status: %d', response.status)
+        logger.info('title_of_response_html: %s', html_title)
+        logger.info('logout_state: %s', 'success' if html_title == '信息页' else 'fail')
+
+#@staticmethod
+#def generate_post_data_hook(post_data: dict) -> None:
+#    username = post_data['DDDDD']
+#    username += '@bistu'
+#    post_data['DDDDD'] = username
+
diff --git a/main.py b/main.py
deleted file mode 100644
index e9b8c45..0000000
--- a/main.py
+++ /dev/null
@@ -1,167 +0,0 @@
-#!/usr/bin/python3
-
-import urllib.parse
-import urllib.request
-import urllib.response
-import logging
-import re
-import argparse
-
-logger = logging.getLogger('login_manager')
-
-def generate_post_data(username: str, password: str):
-    '''
-    Generate bytes to send to through HTTP POST, an example from browser:
-
-    DDDDD=2021020000&upass=Bistu000000&R1=0&R2=&R3=0&R6=0&para=00&0MKKey=123456&buttonClicked=&redirect_url=&err_flag=&username=&password=&user=&cmd=&Login=
-    '''
-
-    data_template = {
-        'DDDDD': None,
-        'upass': None,
-        'R1': 0,
-        'R2': '',
-        'R3': 0,
-        'R6': 0,
-        'para': 00,
-        '0MKKey': 123456,
-        'buttonClicked': '',
-        'redirect_url': '',
-        'err_flag': '',
-        'username': '',
-        'password': '',
-        'user': '',
-        'cmd': '',
-        'Login': ''
-    }
-
-    data_template['DDDDD'] = username
-    data_template['upass'] = password
-
-    # login_manager.generate_post_data_hook(data_template)
-
-    logger.debug('the generated post data is %s', str(data_template))
-
-    return bytes(urllib.parse.urlencode(data_template), 'utf-8')
-
-def login(username: str, password: str, host: str = '10.1.206.13'):
-    '''
-    There are some other host, the known are:
-
-    - 10.1.206.3 (default)
-    - 192.168.211.3
-    '''
-    headers = {
-        'Content-Type': 'application/x-www-form-urlencoded',
-        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8',
-        'Accept-Language': 'en-US,zh-CN;q=0.5',
-        'Accept-Encoding': 'gzip, deflate'
-    }
-    post_data = generate_post_data(username, password)
-
-    login_url = f'http://{host}/a70.htm'
-    logger.debug('the dest url is: %s', login_url)
-    logger.debug('the headers is: %s', str(headers))
-    logger.debug('the encoded post data is %s', str(post_data))
-
-    req = urllib.request.Request(url=login_url, data=post_data, headers=headers, method='POST')
-
-    logger.info('sending the login request...')
-
-    with urllib.request.urlopen(req) as response:
-        response_body = response.read().decode('gbk')
-
-        html_title = re.search('<title>(.*)</title>', response_body)[1]
-
-        logger.info('http_status: %d', response.status)
-        logger.info('title_of_response_html: %s', html_title)
-        logger.info('login_state: %s', 'success' if html_title == '认证成功页' else 'fail')
-
-def logout(host: str = '10.1.206.13'):
-    '''
-    param host: see login host
-    '''
-
-    logout_url = f'http://{host}/F.htm'
-    req = urllib.request.Request(url=logout_url)
-
-    logger.info('sending the logout request...')
-
-    with urllib.request.urlopen(req) as response:
-        response_body = response.read().decode('gbk')
-
-        html_title = re.search('<title>(.*)</title>', response_body)[1]
-
-        logger.info('http_status: %d', response.status)
-        logger.info('title_of_response_html: %s', html_title)
-        logger.info('logout_state: %s', 'success' if html_title == '信息页' else 'fail')
-
-    #@staticmethod
-    #def generate_post_data_hook(post_data: dict) -> None:
-    #    username = post_data['DDDDD']
-    #    username += '@bistu'
-    #    post_data['DDDDD'] = username
-
-
-def load_auth_info(path: str):
-    with open(path, 'r', encoding='utf-8') as file:
-        username = file.readline().strip()
-        password = file.readline().strip()
-
-        host = file.readline().strip()
-        if host == '':
-            host = None
-
-        return username, password, host
-
-def main():
-    logging.basicConfig(level=logging.DEBUG)
-    logger = logging.getLogger('main')
-
-    parser = argparse.ArgumentParser()
-    parser.description = 'login or logout bistu wifi'
-    parser.epilog = 'the config file format(without quote): "{username}\\n{password}". The "\\n" is a newline charactor'
-
-    parser.add_argument('-u', '--username', nargs='?',
-                        type=str, help='username you use to login bistu wifi, logout if not provided')
-    parser.add_argument('-p', '--password', nargs='?',
-                        type=str, help='password you use to login bistu wifi, logout if not provided')
-    parser.add_argument('--host', nargs='?', default=None,
-                        type=str, help='host to send login/logout request to, default use 10.1.206.13')
-    parser.add_argument('-o', '--logout', nargs='?', type=bool, default=False,
-                        help='logout bistu wifi')
-    parser.add_argument('-c', '--config', nargs='?', type=str,
-                        help='load info(username, password, host) from config file')
-
-    args = parser.parse_args()
-
-    logger.debug('parse argument: username= %s', args.username)
-    logger.debug('parse argument: password= %s', args.password)
-    logger.debug('parse argument: host= %s', args.host)
-    logger.debug('parse argument: logout= %s', args.logout)
-
-    if args.config is not None:
-        username, password, host = load_auth_info(args.config)
-
-        if host is None:
-            login(username, password)
-        else:
-            login(username, password, host)
-
-    elif args.username is not None and args.password is not None:
-        if args.host is None:
-            login(args.username, args.password)
-        else:
-            login(args.username, args.password, args.host)
-
-    elif args.logout:
-        if args.host is None:
-            logout()
-        else:
-            logout(args.host)
-    else:
-        parser.print_help()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..d2aa7f5
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,6 @@
+[project]
+name = "bistu_wifi"
+version = "0.0.1"
+dependencies = []
+[project.scripts]
+bistu-wifi = "bistu_wifi.__main__:main"