changes

fusion_accounting/fusion_accounting_migration/models/ir_module_module.py

@@ -0,0 +1,84 @@
+"""Safety guard: blocks Odoo Enterprise accounting uninstall until migration runs.
+
+For each Enterprise accounting module the user attempts to uninstall, the
+guard checks an ir.config_parameter flag named:
+
+    fusion_accounting.migration.<module_name>.completed
+
+If the flag is False/unset and the module is currently installed, the guard
+raises UserError pointing the user to the top-level
+Fusion Accounting -> Migrate from Enterprise menu.
+
+The migration wizard sets the flag to True after a successful migration run
+for that module.
+"""
+
+from odoo import _, api, models
+from odoo.exceptions import UserError
+
+
+GUARDED_MODULES = (
+    'account_accountant',
+    'account_reports',
+    'accountant',
+    'account_followup',
+    'account_asset',
+    'account_budget',
+    'account_loans',
+)
+
+
+class IrModuleModule(models.Model):
+    _inherit = "ir.module.module"
+
+    @api.model
+    def _fusion_check_uninstall_guard(self, module_names):
+        """Verify it's safe to uninstall the given modules.
+
+        Returns True if all checks pass; raises UserError otherwise.
+        """
+        Param = self.env['ir.config_parameter'].sudo()
+        for name in module_names:
+            if name not in GUARDED_MODULES:
+                continue
+            installed = self.sudo().search_count([
+                ('name', '=', name), ('state', '=', 'installed'),
+            ])
+            if not installed:
+                continue
+            flag_key = f'fusion_accounting.migration.{name}.completed'
+            if Param.get_param(flag_key, default='False').lower() != 'true':
+                raise UserError(_(
+                    "Cannot uninstall %s: the Fusion Accounting migration "
+                    "for this module has not run yet. Please open\n"
+                    "    Fusion Accounting -> Migrate from Enterprise\n"
+                    "and run the migration before uninstalling. Once the "
+                    "migration has completed, the safety guard will allow "
+                    "uninstall.\n\n"
+                    "If you genuinely want to uninstall WITHOUT migrating "
+                    "(data will be lost), set the parameter %s to True manually.",
+                    name, flag_key,
+                ))
+        return True
+
+    def button_immediate_uninstall(self):
+        """Override to invoke the safety guard before allowing uninstall.
+
+        Both this and ``module_uninstall`` below can fire in a single UI
+        uninstall call (button_immediate_uninstall -> module_uninstall). The
+        guard is a pure read + raise, so re-running it is idempotent: on the
+        happy path it just re-confirms; on the blocked path the first call
+        already raised and the second is never reached.
+        """
+        self._fusion_check_uninstall_guard(self.mapped('name'))
+        return super().button_immediate_uninstall()
+
+    def module_uninstall(self):
+        """Override the lower-level uninstall path too (CLI / API uninstall).
+
+        See ``button_immediate_uninstall`` above -- both overrides may run in
+        the same UI uninstall; the guard is idempotent so double-invocation
+        is safe.
+        """
+        self._fusion_check_uninstall_guard(self.mapped('name'))
+        return super().module_uninstall()