From eae2ceb3ebaf9b934e3c16a9b83023aa110b3440 Mon Sep 17 00:00:00 2001
From: Linloir <3145078758@qq.com>
Date: Sun, 9 Oct 2022 21:15:52 +0800
Subject: [PATCH] Change database directory & add readme

---
 .gitignore        |  1 +
 README.md         | 24 ++++++++++++++++++++++--
 lib/database.dart |  9 +++++----
 3 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index 7b9ba80..54405dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 .packages
 
 .tmp/
+.data/
 .data/**
 
 # Conventional directory for build output.
diff --git a/README.md b/README.md
index 3816eca..708f431 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,22 @@
-A sample command-line application with an entrypoint in `bin/`, library code
-in `lib/`, and example unit test in `test/`.
+# Simple TCP Server
+
+This is ~~a project of my Computer Internet course~~ a project inspired by my school homework.
+
+Several days before I'm asked to write a project on TCP server-client communication, and I wondered why not build a simple chat service beyond that which would be much more fun?
+
+Therefore here it is, a simple tcp server with several functions which makes it acts like a small chat app.
+
+## Functions
+
+- User register / login / logout
+- Remember login state for device (simple token approach though)
+- Send messages via users
+- Search users and add contacts (and accept them of course)
+- Message sync via different devices
+- Send message to offline server (a SMTP-like approach)
+- File handling (transfer to and fetch from server)
+
+## Notice
+
+- To support multilanguage, use `base64Encode(utf8.encode(yourMessageHere))` before wrapping client messages in json object and sending that to the server (the serve will crash!)
+- Always open a new TCP connection to fetch or send file
diff --git a/lib/database.dart b/lib/database.dart
index e49df33..2ee4c11 100644
--- a/lib/database.dart
+++ b/lib/database.dart
@@ -1,7 +1,7 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-06 16:15:01
- * @LastEditTime : 2022-10-09 20:28:49
+ * @LastEditTime : 2022-10-09 20:31:23
  * @Description  : 
  */
 
@@ -25,12 +25,12 @@ class DataBaseHelper {
 
   Future<void> initialize() async {
     _database = await databaseFactoryFfi.openDatabase(
-      'E:\\database.db',
+      '${Directory.current.path}/.tmp/database.db',
       options: OpenDatabaseOptions(
         version: 1,
-        onCreate: (db, version) {
+        onCreate: (db, version) async {
           print('[L] Creating Database.');
-          db.execute(
+          await db.execute(
             '''
               CREATE TABLE users (
                 userid    integer primary key autoincrement,
@@ -77,6 +77,7 @@ class DataBaseHelper {
               );
             '''
           );
+          print('[L] Database created');
         },
       )
     );