Add JSON integrity hash checks

src/ccma/ui/dialogs.py

@@ -510,3 +510,46 @@ class AssetClaimDialog(tk.Toplevel):
             return
         self.destroy()
         self.on_created(str(result["claim"]["claim_id"]))
+
+
+class IntegrityWarningDialog(tk.Toplevel):
+    def __init__(
+        self,
+        master: tk.Misc,
+        *,
+        title: str,
+        warnings: list[str],
+        on_confirm: Callable[[], None],
+    ):
+        super().__init__(master)
+        self.on_confirm = on_confirm
+        self.title(title)
+        self.transient(master.winfo_toplevel())
+        self.resizable(False, False)
+        self.warnings = warnings
+        self._build_ui()
+        self.bind("<Escape>", lambda _event: self.destroy())
+        self.after_idle(self._activate_modal)
+
+    def _build_ui(self) -> None:
+        frame = ttk.Frame(self, padding=18)
+        frame.pack(fill="both", expand=True)
+        message = (
+            "ACHTUNG: Die zugehörigen JSON-Dateien wurden vermutlich extern geändert.\n\n"
+            "Haben Sie alle Daten geprüft und soll der Hash jetzt aktualisiert werden?"
+        )
+        ttk.Label(frame, text=message, justify="left").grid(row=0, column=0, sticky="w")
+        ttk.Label(frame, text="\n".join(f"• {item}" for item in self.warnings), style="Warning.TLabel", justify="left").grid(
+            row=1, column=0, sticky="w", pady=(12, 0)
+        )
+        buttons = ttk.Frame(frame)
+        buttons.grid(row=2, column=0, sticky="e", pady=(18, 0))
+        ttk.Button(buttons, text="Nein", command=self.destroy).pack(side="left", padx=(0, 8))
+        ttk.Button(buttons, text="Ja, bestätigen", style="Accent.TButton", command=self._confirm).pack(side="left")
+
+    def _activate_modal(self) -> None:
+        _activate_modal_window(self)
+
+    def _confirm(self) -> None:
+        self.destroy()
+        self.on_confirm()