Detect fresh install and guide the user to set an encryption passphrase so they know why they're prompted

bouquin/key_prompt.py

@@ -14,8 +14,8 @@ class KeyPrompt(QDialog):
     def __init__(
         self,
         parent=None,
-        title: str = "Unlock database",
-        message: str = "Enter SQLCipher key",
+        title: str = "Enter key",
+        message: str = "Enter key",
     ):
         super().__init__(parent)
         self.setWindowTitle(title)

bouquin/main_window.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import os
 import sys
 
 from PySide6.QtCore import QDate, QTimer, Qt, QSettings
@@ -37,8 +38,14 @@ class MainWindow(QMainWindow):
         self.setMinimumSize(1000, 650)
 
         self.cfg = load_db_config()
+        if not os.path.exists(self.cfg.path):
+            # Fresh database/first time use, so guide the user re: setting a key
+            first_time = True
+        else:
+            first_time = False
+
         # Always prompt for the key (we never store it)
-        if not self._prompt_for_key_until_valid():
+        if not self._prompt_for_key_until_valid(first_time):
             sys.exit(1)
 
         # ---- UI: Left fixed panel (calendar) + right editor -----------------
@@ -161,12 +168,18 @@ class MainWindow(QMainWindow):
             return False
         return ok
 
-    def _prompt_for_key_until_valid(self) -> bool:
+    def _prompt_for_key_until_valid(self, first_time: bool) -> bool:
         """
         Prompt for the SQLCipher key.
         """
+        if first_time:
+            title = "Set an encryption key"
+            message = "Bouquin encrypts your data.\n\nPlease create a strong passphrase to encrypt the notebook.\n\nYou can always change it later!"
+        else:
+            title = "Unlock encrypted notebook"
+            message = "Enter your key to unlock the notebook"
         while True:
-            dlg = KeyPrompt(self, message="Enter a key to unlock the notebook")
+            dlg = KeyPrompt(self, title, message)
             if dlg.exec() != QDialog.Accepted:
                 return False
             self.cfg.key = dlg.key()

bouquin/settings_dialog.py

@@ -76,11 +76,11 @@ class SettingsDialog(QDialog):
         self.accept()
 
     def _change_key(self):
-        p1 = KeyPrompt(self, title="Change key", message="Enter new key")
+        p1 = KeyPrompt(self, title="Change key", message="Enter a new encryption key")
         if p1.exec() != QDialog.Accepted:
             return
         new_key = p1.key()
-        p2 = KeyPrompt(self, title="Change key", message="Re-enter new key")
+        p2 = KeyPrompt(self, title="Change key", message="Re-enter the new key")
         if p2.exec() != QDialog.Accepted:
             return
         if new_key != p2.key():
@@ -92,7 +92,7 @@ class SettingsDialog(QDialog):
         try:
             self._db.rekey(new_key)
             QMessageBox.information(
-                self, "Key changed", "The database key was updated."
+                self, "Key changed", "The notebook was re-encrypted with the new key!"
             )
         except Exception as e:
             QMessageBox.critical(self, "Error", f"Could not change key:\n{e}")