first commit

src/database.py

@@ -0,0 +1,51 @@
+import config
+import sqlite3
+import json
+
+class CalendarDatabase(object):
+    def __init__(self):
+        self.db = None
+
+    def open(self):
+        if (self.is_database_valid()):
+            raise Exception('Databade is opened')
+
+        if config.CustomConfig['database-type'] == 'sqlite':
+            self.db = sqlite3.connect(config.CustomConfig['database-config']['url'])
+        elif config.CustomConfig['database-type'] == 'mysql':
+            raise Exception('Not implemented database')
+        else:
+            raise Exception('Unknow database type')
+
+    def init(self, username, password):
+        if (self.is_database_valid()):
+            raise Exception('Databade is opened')
+
+        self.open()
+        with open('sql/sqlite.sql', 'r', encoding='utf-8') as fsql:
+            cursor = self.db.cursor()
+            cursor.executescript(fsql.read())
+            cursor.close()
+            self.db.commit()
+
+        #todo: finish init
+        
+
+    def close(self):
+        self.check_database()
+        self.db.close()
+        self.db = None
+
+    def check_database(self):
+        if (not self.is_database_valid()):
+            raise Exception('Databade is None')
+
+    def is_database_valid(self):
+        return not (self.db == None)
+
+    # operation function
+    def login_step1(self, username):
+        self.check_database()
+
+    def login_step2(self, username, password):
+        self.check_database()