Initial commit

backend/code/services/environment.py

@@ -0,0 +1,20 @@
+import os
+
+class EnvironmentService:
+    def __init__(self):
+        self.LINE_COMMENTED = '#'
+        self.VALUE_SEPARATOR = '='
+
+    def LoadEnvFile(self, filepath:str):
+        with open(filepath, 'r') as file:
+            for line in file:
+                line = line.strip()
+                if line and not line.startswith(self.LINE_COMMENTED) and self.VALUE_SEPARATOR in line:
+                    key,value = line.split(self.VALUE_SEPARATOR, 1)
+                    self.Set(key, value) # os.environ[key] = value
+
+    def Get(self, key:str):
+        return os.getenv(key)
+
+    def Set(self, key: str, value):
+        os.environ[key] = value

backend/code/services/mailing.py

@@ -0,0 +1,27 @@
+import os
+import smtplib
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+
+# https://realpython.com/python-send-email/
+class MailingService:
+    def __init__(self):
+        self.server = os.getenv('MAILING_SMTP_SERVER')
+        self.port = os.getenv('MAILING_SMTP_PORT')
+        self.user = os.getenv('MAILING_SMTP_USER')
+        self.password = os.getenv('MAILING_SMTP_PASSWORD')
+
+    def SendMessage(self, address: str, subject: str, content: str):
+        try:
+            message = MIMEMultipart()
+            message['From'] = self.user
+            message['To'] = address
+            message['Subject'] = subject
+            message.attach(MIMEText(content, 'plain'))
+        
+            with smtplib.SMTP_SSL(self.server, self.port) as server:
+                server.login(self.user, self.password)
+                server.send_message(message)
+                server.quit()
+        except Exception as e:
+            print(e)

backend/code/services/token.py

@@ -0,0 +1,22 @@
+import os
+import jwt
+from datetime import datetime, timedelta
+
+class TokenService:
+    def __init__(self):
+        self.SECRET = os.getenv('TOKEN_SECRET')
+        self.ALGORITHM = os.getenv('TOKEN_ALGORITHM')
+        self.LIVE_HOUR_MINUTES = os.getenv('TOKEN_LIVE')
+        
+    def GenerateToken(self, payload):
+        payload['exp'] = datetime.now() + timedelta(minutes = int(self.LIVE_HOUR_MINUTES))
+        return jwt.encode(payload, self.SECRET, self.ALGORITHM)
+
+    def ValidateToken(self, token: str):
+        try:
+            if os.getenv('ENVIRONMENT') == 'Development' and token == "1":
+                return True
+
+            return jwt.decode(token, self.SECRET, algorithms = self.ALGORITHM)
+        except jwt.InvalidTokenError as e:
+            return False