diff --git a/.gitignore b/.gitignore
index 3369b1d..cb2ad04 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ __pycache__
 .vscode
 *.session
 *.toml
+*.db
+*.service
diff --git a/TgFileSystemClient.py b/TgFileSystemClient.py
index 93e324e..5a5354a 100644
--- a/TgFileSystemClient.py
+++ b/TgFileSystemClient.py
@@ -1,9 +1,11 @@
 import asyncio
-from typing import Union
+import json
+from typing import Union, Optional
 
-from telethon import TelegramClient, types
+from telethon import TelegramClient, types, hints
 
 import configParse
+import apiutils
 
 
 class TgFileSystemClient(object):
@@ -12,12 +14,13 @@ class TgFileSystemClient(object):
     session_name: str
     proxy_param: dict[str, any]
     client: TelegramClient
+    dialogs_cache: Optional[hints.TotalList] = None
     me: Union[types.User, types.InputPeerUser]
 
-    def __init__(self, param: configParse.TgToFileSystemParameter) -> None:
+    def __init__(self, session_name: str, param: configParse.TgToFileSystemParameter) -> None:
         self.api_id = param.tgApi.api_id
         self.api_hash = param.tgApi.api_hash
-        self.session_name = param.base.name
+        self.session_name = session_name
         self.proxy_param = {
             'proxy_type': param.proxy.proxy_type,
             'addr': param.proxy.addr,
@@ -26,26 +29,108 @@ class TgFileSystemClient(object):
         self.client = TelegramClient(
             self.session_name, self.api_id, self.api_hash, proxy=self.proxy_param)
 
+    def __del__(self) -> None:
+        self.client.disconnect()
 
     def __repr__(self) -> str:
         if not self.client.is_connected:
             return f"client disconnected, session_name:{self.session_name}"
         return f"client connected, session_name:{self.session_name}, username:{self.me.username}, phone:{self.me.phone}, detail:{self.me.stringify()}"
 
-    async def init_client(self):
+    def _call_before_check(func):
+        def call_check_wrapper(self, *args, **kwargs):
+            if not self.is_valid():
+                raise RuntimeError("Client does not run.")
+            result = func(self, *args, **kwargs)
+            return result
+        return call_check_wrapper
+
+    def _acall_before_check(func):
+        async def call_check_wrapper(self, *args, **kwargs):
+            if not self.is_valid():
+                raise RuntimeError("Client does not run.")
+            result = await func(self, *args, **kwargs)
+            return result
+        return call_check_wrapper
+
+    @_call_before_check
+    def to_dict(self) -> dict:
+        return self.me.to_dict()
+
+    @_call_before_check
+    def to_json(self) -> str:
+        return self.me.to_json()
+
+    def is_valid(self) -> bool:
+        return self.client.is_connected() and self.me is not None
+
+    async def start(self) -> None:
+        if not self.client.is_connected():
+            await self.client.connect()
         self.me = await self.client.get_me()
+        if self.me is None:
+            raise RuntimeError(
+                f"The {self.session_name} Client Does Not Login")
+
+    async def stop(self) -> None:
+        await self.client.disconnect()
+
+    @_acall_before_check
+    async def get_message(self, chat_id: int, msg_id: int) -> types.Message:
+        msg = await self.client.get_messages(chat_id, ids=msg_id)
+        return msg
+
+    @_acall_before_check
+    async def get_dialogs(self, limit: int = 10, offset: int = 0, refresh: bool = False) -> hints.TotalList:
+        def _to_json(item) -> str:
+            return json.dumps({"id": item.id, "is_channel": item.is_channel,
+                               "is_group": item.is_group, "is_user": item.is_user, "name": item.name, })
+        if self.dialogs_cache is not None and refresh is False:
+            return self.dialogs_cache[offset:offset+limit]
+        self.dialogs_cache = await self.client.get_dialogs()
+        for item in self.dialogs_cache:
+            item.to_json = _to_json
+        return self.dialogs_cache[offset:offset+limit]
+
+    async def _get_offset_msg_id(self, chat_id: int, offset: int) -> int:
+        if offset != 0:
+            begin = await self.client.get_messages(chat_id, limit=1)
+            if len(begin) == 0:
+                return hints.TotalList()
+            first_id = begin[0].id
+            offset = first_id + offset
+        return offset
+
+    @_acall_before_check
+    async def get_messages(self, chat_id: int, limit: int = 10, offset: int = 0) -> hints.TotalList:
+        offset = await self._get_offset_msg_id(chat_id, offset)
+        res_list = await self.client.get_messages(chat_id, limit=limit, offset_id=offset)
+        return res_list
+
+    @_acall_before_check
+    async def get_messages_by_search(self, chat_id: int, search_word: str, limit: int = 10, offset: int = 0, inner_search: bool = False) -> hints.TotalList:
+        offset = await self._get_offset_msg_id(chat_id, offset)
+        if inner_search:
+            res_list = await self.client.get_messages(chat_id, limit=limit, offset_id=offset, search=search_word)
+            return res_list
+        # search by myself
+        res_list = hints.TotalList()
+        async for msg in self.client.iter_messages(chat_id, offset_id=offset):
+            if msg.text.find(search_word) == -1 and apiutils.get_message_media_name(msg).find(search_word) == -1:
+                continue
+            res_list.append(msg)
+            if len(res_list) >= limit:
+                break
+        return res_list
 
     def __enter__(self):
-        self.client.__enter__()
-        self.client.loop.run_until_complete(self.init_client())
+        raise NotImplemented
 
     def __exit__(self):
-        self.client.__exit__()
-        self.me = None
+        raise NotImplemented
 
     async def __aenter__(self):
-        await self.client.__enter__()
-        await self.init_client()
+        await self.start()
 
     async def __aexit__(self):
-        await self.client.__aexit__()
+        await self.stop()
diff --git a/TgFileSystemClientManager.py b/TgFileSystemClientManager.py
index 9998f88..9586531 100644
--- a/TgFileSystemClientManager.py
+++ b/TgFileSystemClientManager.py
@@ -1,35 +1,63 @@
 from typing import Any
+import time
+import hashlib
+import os
+
 from TgFileSystemClient import TgFileSystemClient
+from UserManager import UserManager
+import configParse
 
 
 class TgFileSystemClientManager(object):
     MAX_MANAGE_CLIENTS: int = 10
-    clients: dict[int, TgFileSystemClient]
-    
-    def __init__(self) -> None:
+    param: configParse.TgToFileSystemParameter
+    clients: dict[str, TgFileSystemClient] = {}
+
+    def __init__(self, param: configParse.TgToFileSystemParameter) -> None:
+        self.param = param
+        self.db = UserManager()
+
+    def __del__(self) -> None:
         pass
-    
-    def push_client(self, client: TgFileSystemClient) -> int:
-        """
-        push client to manager.
 
-        Arguments
-            client
+    def check_client_session_exist(self, client_id: str) -> bool:
+        return os.path.isfile(client_id + '.session')
 
-        Returns
-            client id
+    def generate_client_id(self) -> str:
+        return hashlib.md5(
+            (str(time.perf_counter()) + self.param.base.salt).encode('utf-8')).hexdigest()
 
-        """
-        self.clients[id(client)] = client
-        return id(client)
-        
-    def get_client(self, client_id: int) -> TgFileSystemClient:
+    def create_client(self, client_id: str = None) -> TgFileSystemClient:
+        if client_id is None:
+            client_id = self.generate_client_id()
+        client = TgFileSystemClient(client_id, self.param)
+        return client
+
+    def register_client(self, client: TgFileSystemClient) -> bool:
+        self.clients[client.session_name] = client
+        return True
+
+    def deregister_client(self, client_id: str) -> bool:
+        self.clients.pop(client_id)
+        return True
+
+    def get_client(self, client_id: str) -> TgFileSystemClient:
         client = self.clients.get(client_id)
         return client
     
-    
+    async def get_client_force(self, client_id: str) -> TgFileSystemClient:
+        client = self.get_client(client_id)
+        if client is None:
+            if not self.check_client_session_exist(client_id):
+                raise RuntimeError("Client session does not found.")
+            client = self.create_client(client_id=client_id)
+        if not client.is_valid():
+            await client.start()
+            self.register_client(client)
+        return client
+
 
 if __name__ == "__main__":
     import configParse
-    t: TgFileSystemClient = TgFileSystemClient(configParse.get_TgToFileSystemParameter())
+    # t: TgFileSystemClient = TgFileSystemClient(configParse.get_TgToFileSystemParameter())
     print(f"{t.session_name=}")
diff --git a/UserManager.py b/UserManager.py
new file mode 100644
index 0000000..a83a6b1
--- /dev/null
+++ b/UserManager.py
@@ -0,0 +1,59 @@
+import sqlite3
+
+from pydantic import BaseModel
+
+
+class UserUpdateParam(BaseModel):
+    client_id: str
+    username: str
+    phone: str
+    tg_user_id: int
+    last_login_time: int
+
+
+class MessageUpdateParam(BaseModel):
+    tg_chat_id: int
+    tg_message_id: int
+    client_id: str
+    username: str
+    phone: str
+    tg_user_id: int
+
+
+class UserManager(object):
+    def __init__(self) -> None:
+        self.con = sqlite3.connect("user.db")
+        self.cur = self.con.cursor()
+        if not self._table_has_been_inited():
+            self._first_runtime_run_once()
+
+    def __del__(self) -> None:
+        self.con.commit()
+        self.con.close()
+
+    def update_user(self) -> None:
+        raise NotImplemented
+
+    def update_message(self) -> None:
+        raise NotImplemented
+
+    def get_user_info() -> None:
+        raise NotImplemented
+
+    def _table_has_been_inited(self) -> bool:
+        res = self.cur.execute("SELECT name FROM sqlite_master")
+        return len(res.fetchall()) != 0
+
+    def _first_runtime_run_once(self) -> None:
+        if len(self.cur.execute("SELECT name FROM sqlite_master WHERE name='user'").fetchall()) == 0:
+            self.cur.execute(
+                "CREATE TABLE user(client_id, username, phone, tg_user_id, last_login_time)")
+        if len(self.cur.execute("SELECT name FROM sqlite_master WHERE name='message'").fetchall()) == 0:
+            self.cur.execute(
+                "CREATE TABLE message(tg_chat_id, tg_message_id, client_id, username, phone, tg_user_id, msg_ctx, msg_type)")
+
+
+if __name__ == "__main__":
+    db = UserManager()
+    res = db.cur.execute("SELECT name FROM sqlite_master")
+    print(res.fetchall())
diff --git a/apiutils.py b/apiutils.py
new file mode 100644
index 0000000..74804fa
--- /dev/null
+++ b/apiutils.py
@@ -0,0 +1,64 @@
+import time
+
+from fastapi import status, HTTPException
+from telethon import types
+from functools import wraps
+
+import configParse
+
+
+def get_range_header(range_header: str, file_size: int) -> tuple[int, int]:
+    def _invalid_range():
+        return HTTPException(
+            status.HTTP_416_REQUESTED_RANGE_NOT_SATISFIABLE,
+            detail=f"Invalid request range (Range:{range_header!r})",
+        )
+
+    try:
+        h = range_header.replace("bytes=", "").split("-")
+        start = int(h[0]) if h[0] != "" else 0
+        end = int(h[1]) if h[1] != "" else file_size - 1
+    except ValueError:
+        raise _invalid_range()
+
+    if start > end or start < 0 or end > file_size - 1:
+        raise _invalid_range()
+    return start, end
+
+
+def get_message_media_name(msg: types.Message) -> str:
+    if msg.media is None or msg.media.document is None:
+        return ""
+    for attr in msg.media.document.attributes:
+        if isinstance(attr, types.DocumentAttributeFilename):
+            return attr.file_name
+
+
+def timeit(func):
+    if configParse.get_TgToFileSystemParameter().base.timeit_enable:
+        @wraps(func)
+        def timeit_wrapper(*args, **kwargs):
+            start_time = time.perf_counter()
+            result = func(*args, **kwargs)
+            end_time = time.perf_counter()
+            total_time = end_time - start_time
+            print(
+                f'Function {func.__name__}{args} {kwargs} Took {total_time:.4f} seconds')
+            return result
+        return timeit_wrapper
+    return func
+
+
+def atimeit(func):
+    if configParse.get_TgToFileSystemParameter().base.timeit_enable:
+        @wraps(func)
+        async def timeit_wrapper(*args, **kwargs):
+            start_time = time.perf_counter()
+            result = await func(*args, **kwargs)
+            end_time = time.perf_counter()
+            total_time = end_time - start_time
+            print(
+                f'AFunction {func.__name__}{args} {kwargs} Took {total_time:.4f} seconds')
+            return result
+        return timeit_wrapper
+    return func
diff --git a/config.toml.example b/config.toml.example
new file mode 100644
index 0000000..c8c08ec
--- /dev/null
+++ b/config.toml.example
@@ -0,0 +1,14 @@
+[base]
+salt = "AnyTokenYouWanted"
+port = 7777
+timeit_enable = false
+
+[tgApi]
+api_id = int_app_id_from_tg
+api_hash = "api_hash_from_tg"
+
+[proxy]
+enable = false
+proxy_type = "socks5"
+addr = "172.25.32.1"
+port = 7890
diff --git a/configParse.py b/configParse.py
index 69da618..3c0a2f4 100644
--- a/configParse.py
+++ b/configParse.py
@@ -4,8 +4,9 @@ from pydantic import BaseModel
 
 class TgToFileSystemParameter(BaseModel):
     class BaseParameter(BaseModel):
-        name: str
+        salt: str
         port: int
+        timeit_enable: bool
     base: BaseParameter
 
     class ApiParameter(BaseModel):
diff --git a/start.py b/start.py
index 1b46449..ce4e215 100644
--- a/start.py
+++ b/start.py
@@ -1,22 +1,29 @@
 import asyncio
+import time
+import json
 
 import uvicorn
-from fastapi import FastAPI
-from fastapi import status
+from fastapi import FastAPI, status, Request
 from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import Response
+from fastapi.responses import Response, StreamingResponse
 from contextlib import asynccontextmanager
-from telethon import TelegramClient
+from telethon import types, hints
+from pydantic import BaseModel
 
 import configParse
+import apiutils
+from TgFileSystemClientManager import TgFileSystemClientManager
+from TgFileSystemClient import TgFileSystemClient
+
+clients_mgr: TgFileSystemClientManager = None
+
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    global clients_mgr
     param = configParse.get_TgToFileSystemParameter()
-    loop = asyncio.get_event_loop()
-    tg_client_task = loop.create_task(start_tg_client(param))
+    clients_mgr = TgFileSystemClientManager(param)
     yield
-    asyncio.gather(*[tg_client_task])
 
 app = FastAPI(lifespan=lifespan)
 
@@ -28,47 +35,100 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-@app.post("/tg/{chat_id}/{message_id}")
-async def get_test(chat_id: str, message_id: str):
-    print(f"test: {chat_id=}, {message_id=}")
-    return Response(status_code=status.HTTP_200_OK)
-    
 
-async def start_tg_client(param: configParse.TgToFileSystemParameter):
-    api_id = param.tgApi.api_id
-    api_hash = param.tgApi.api_hash
-    session_name = param.base.name
-    proxy_param = {
-        'proxy_type': param.proxy.proxy_type,
-        'addr': param.proxy.addr,
-        'port': param.proxy.port,
-    } if param.proxy.enable else {}
-    client = TelegramClient(session_name, api_id, api_hash, proxy=proxy_param)
+class TgToFileListRequestBody(BaseModel):
+    token: str
+    search: str = ""
+    chat_id: int = 0
+    index: int = 0
+    length: int = 10
+    refresh: bool = False
+    inner: bool = False
 
-    async def tg_client_main():
-        # Getting information about yourself
-        me = await client.get_me()
 
-        # "me" is a user object. You can pretty-print
-        # any Telegram object with the "stringify" method:
-        print(me.stringify())
+@app.post("/tg/api/v1/file/list")
+@apiutils.atimeit
+async def get_tg_file_list(body: TgToFileListRequestBody):
+    try:
+        res = hints.TotalList()
+        res_type = "chat"
+        client = await clients_mgr.get_client_force(body.token)
+        res_dict = {}
+        if body.chat_id == 0:
+            res = await client.get_dialogs(limit=body.length, offset=body.index, refresh=body.refresh)
+            res_dict = [{"id": item.id, "is_channel": item.is_channel,
+                         "is_group": item.is_group, "is_user": item.is_user, "name": item.name, } for item in res]
+        elif body.search != "":
+            res = await client.get_messages_by_search(body.chat_id, search_word=body.search, limit=body.length, offset=body.index, inner_search=body.inner)
+            res_type = "msg"
+            res_dict = [json.loads(item.to_json()) for item in res]
+        else:
+            res = await client.get_messages(body.chat_id, limit=body.length, offset=body.index)
+            res_type = "msg"
+            res_dict = [json.loads(item.to_json()) for item in res]
 
-        # When you print something, you see a representation of it.
-        # You can access all attributes of Telegram objects with
-        # the dot operator. For example, to get the username:
-        username = me.username
-        print(username)
-        print(me.phone)
-        # You can print all the dialogs/conversations that you are part of:
-        dialogs = await client.get_dialogs()
-        for dialog in dialogs:
-            print(f"{dialog.name} has ID {dialog.id}")
-        # async for dialog in client.iter_dialogs():
-        #     print(dialog.name, 'has ID', dialog.id)
+        response_dict = {
+            "client": json.loads(client.to_json()),
+            "type": res_type,
+            "list": res_dict,
+        }
+        return Response(json.dumps(response_dict), status_code=status.HTTP_200_OK)
+    except Exception as err:
+        print(f"{err=}")
+        return Response(f"{err=}", status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
-    async with client:
-        await tg_client_main()
 
+@app.get("/tg/api/v1/file/msg")
+@apiutils.atimeit
+async def get_tg_file_media_stream(token: str, cid: int, mid: int, request: Request):
+    async def get_msg_media_range_requests(client: TgFileSystemClient, msg: types.Message, start: int, end: int):
+        MAX_CHUNK_SIZE = 1024 * 1024
+        pos = start
+        async for chunk in client.client.iter_download(msg, offset=pos, chunk_size=min(end + 1 - pos, MAX_CHUNK_SIZE)):
+            pos = pos + len(chunk)
+            yield chunk.tobytes()
+    msg_id = mid
+    chat_id = cid
+    headers = {
+        # "content-type": "video/mp4",
+        "accept-ranges": "bytes",
+        "content-encoding": "identity",
+        # "content-length": stream_file_size,
+        "access-control-expose-headers": (
+            "content-type, accept-ranges, content-length, "
+            "content-range, content-encoding"
+        ),
+    }
+    range_header = request.headers.get("range")
+    try:
+        client = await clients_mgr.get_client_force(token)
+        msg = await client.get_message(chat_id, msg_id)
+        file_size = msg.media.document.size
+        start = 0
+        end = file_size - 1
+        status_code = status.HTTP_200_OK
+        mime_type = msg.media.document.mime_type
+        headers["content-type"] = mime_type
+        file_name = apiutils.get_message_media_name(msg)
+        if file_name == "":
+            maybe_file_type = mime_type.split("/")[-1]
+            file_name = f"{chat_id}.{msg_id}.{maybe_file_type}"
+        headers["Content-Disposition"] = f'Content-Disposition: inline; filename="{file_name}"'
+
+        if range_header is not None:
+            start, end = apiutils.get_range_header(range_header, file_size)
+            size = end - start + 1
+            headers["content-length"] = str(size)
+            headers["content-range"] = f"bytes {start}-{end}/{file_size}"
+            status_code = status.HTTP_206_PARTIAL_CONTENT
+        return StreamingResponse(
+            get_msg_media_range_requests(client, msg, start, end),
+            headers=headers,
+            status_code=status_code,
+        )
+    except Exception as err:
+        print(f"{err=}")
+        return Response(f"{err=}", status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
 
 
 if __name__ == "__main__":
diff --git a/test.py b/test.py
index 13b67b2..a983274 100644
--- a/test.py
+++ b/test.py
@@ -4,8 +4,8 @@ import configParse
 
 param = configParse.get_TgToFileSystemParameter()
 # Remember to use your own values from my.telegram.org!
-api_id = param.ApiParameter.api_id
-api_hash = param.ApiParameter.api_hash
+api_id = param.tgApi.api_id
+api_hash = param.tgApi.api_hash
 client = TelegramClient('anon', api_id, api_hash, proxy={
     'proxy_type': 'socks5',
     'addr': '172.25.32.1',
@@ -30,8 +30,12 @@ async def main():
     print(me.phone)
 
     # You can print all the dialogs/conversations that you are part of:
-    async for dialog in client.iter_dialogs():
-        print(dialog.name, 'has ID', dialog.id)
+    # async for dialog in client.iter_dialogs():
+    #     print(dialog.name, 'has ID', dialog.id)
+    #     test_res = await client.get_input_entity(dialog.id)
+    #     print(test_res)
+    # await client.send_message(-1001150067822, "test message from python")
+    # nep_channel = await client.get_dialogs("-1001251458407")
 
     # You can send messages to yourself...
     # await client.send_message('me', 'Hello, myself!')
@@ -60,9 +64,14 @@ async def main():
     # await client.send_file('me', './test.py')
 
     # You can print the message history of any chat:
-    message = await client.get_messages('me', ids=206963)
-    async for message in client.iter_messages('me'):
+    # message = await client.get_messages(nep_channel[0])
+    chat = await client.get_input_entity(-1001216816802)
+    async for message in client.iter_messages(chat, ids=98724):
         print(message.id, message.text)
+        # print(message.stringify())
+        # print(message.to_json())
+        # print(message.to_dict())
+        # await client.download_media(message)
 
         # You can download media from messages, too!
         # The method will return the path where the file was saved.
@@ -72,3 +81,54 @@ async def main():
 
 with client:
     client.loop.run_until_complete(main())
+
+
+async def start_tg_client(param: configParse.TgToFileSystemParameter):
+    api_id = param.tgApi.api_id
+    api_hash = param.tgApi.api_hash
+    session_name = "test"
+    proxy_param = {
+        'proxy_type': param.proxy.proxy_type,
+        'addr': param.proxy.addr,
+        'port': param.proxy.port,
+    } if param.proxy.enable else {}
+    client = TelegramClient(session_name, api_id, api_hash, proxy=proxy_param)
+
+    async def tg_client_main():
+        # Getting information about yourself
+        me = await client.get_me()
+
+        # "me" is a user object. You can pretty-print
+        # any Telegram object with the "stringify" method:
+        print(me.stringify())
+
+        # When you print something, you see a representation of it.
+        # You can access all attributes of Telegram objects with
+        # the dot operator. For example, to get the username:
+        username = me.username
+        print(username)
+        print(me.phone)
+        # You can print all the dialogs/conversations that you are part of:
+        # dialogs = await client.get_dialogs()
+        # for dialog in dialogs:
+        #     print(f"{dialog.name} has ID {dialog.id}")\
+        path_task_list = []
+        async for dialog in client.iter_dialogs():
+            print(dialog.name, 'has ID', dialog.id)
+            # path = await client.download_profile_photo(dialog.id)
+        #     t = client.loop.create_task(
+        #         client.download_profile_photo(dialog.id))
+        #     path_task_list.append(t)
+        # res = await asyncio.gather(*path_task_list)
+        # for path in res:
+        #     print(path)
+
+    # async with client:
+    #     await tg_client_main()
+    await client.connect()
+    # qr_login = await client.qr_login()
+    await client.start()
+    # print(qr_login.url)
+    # await qr_login.wait()
+    await tg_client_main()
+    await client.disconnect()