first setup configuration

backend/app/services/email_service.py

@@ -3,31 +3,71 @@
 
 from email.message import EmailMessage
 from smtplib import SMTP
+import json
 
 from backend.app.core.config import settings
+from backend.app.database import get_connection
+
+
+def get_smtp_settings() -> dict:
+    values = {
+        'smtp_host': settings.smtp_host,
+        'smtp_port': settings.smtp_port,
+        'smtp_username': settings.smtp_username,
+        'smtp_password': settings.smtp_password,
+        'smtp_from': settings.smtp_from,
+        'smtp_use_tls': settings.smtp_use_tls,
+    }
+    with get_connection() as conn:
+        row = conn.execute('SELECT value FROM app_settings WHERE name = ?', ('smtp',)).fetchone()
+    if row:
+        values.update(json.loads(row['value']))
+    return values
+
+
+def save_smtp_settings(values: dict) -> None:
+    with get_connection() as conn:
+        conn.execute(
+            '''INSERT INTO app_settings (name, value, updated_at) VALUES (?, ?, CURRENT_TIMESTAMP)
+               ON CONFLICT(name) DO UPDATE SET value = excluded.value, updated_at = CURRENT_TIMESTAMP''',
+            ('smtp', json.dumps(values)),
+        )
+        conn.commit()
 
 
 def smtp_configured() -> bool:
-    return bool(settings.smtp_host and settings.smtp_from)
+    smtp = get_smtp_settings()
+    return bool(smtp['smtp_host'] and smtp['smtp_from'])
 
 
-def send_verification_email(email: str, username: str, verification_url: str) -> None:
+def send_message(email: str, subject: str, body: str) -> None:
+    smtp = get_smtp_settings()
     if not smtp_configured():
         raise RuntimeError('SMTP is not configured; set LINKLOG_SMTP_HOST and LINKLOG_SMTP_FROM')
 
     message = EmailMessage()
-    message['Subject'] = 'Verify your LinkLog email address'
-    message['From'] = settings.smtp_from
+    message['Subject'] = subject
+    message['From'] = smtp['smtp_from']
     message['To'] = email
-    message.set_content(
+    message.set_content(body)
+
+    with SMTP(smtp['smtp_host'], smtp['smtp_port'], timeout=10) as connection:
+        if smtp['smtp_use_tls']:
+            connection.starttls()
+        if smtp['smtp_username']:
+            connection.login(smtp['smtp_username'], smtp['smtp_password'])
+        connection.send_message(message)
+
+
+def send_verification_email(email: str, username: str, verification_url: str) -> None:
+    send_message(
+        email,
+        'Verify your LinkLog email address',
         f'Hello {username},\n\n'
         f'Verify your LinkLog email address by opening this link:\n{verification_url}\n\n'
-        f'This link expires in {settings.email_verification_expiry_hours} hours.\n'
+        f'This link expires in {settings.email_verification_expiry_hours} hours.\n',
     )
 
-    with SMTP(settings.smtp_host, settings.smtp_port, timeout=10) as smtp:
-        if settings.smtp_use_tls:
-            smtp.starttls()
-        if settings.smtp_username:
-            smtp.login(settings.smtp_username, settings.smtp_password)
-        smtp.send_message(message)
+
+def send_test_email(email: str) -> None:
+    send_message(email, 'LinkLog SMTP test', 'This is a test message from LinkLog. SMTP is configured correctly.\n')