Fix notification metadata handling and add migration for null values

migrations/20250314_fix_notification_metadata_experiment_modal.go

@@ -0,0 +1,43 @@
+package migrations
+
+import (
+	"context"
+
+	"donetick.com/core/logging"
+	"gorm.io/gorm"
+)
+
+type MigrateFixNotificationMetadataExperimentModal20241212 struct{}
+
+func (m MigrateFixNotificationMetadataExperimentModal20241212) ID() string {
+	return "20250314_fix_notification_metadata_experiment_modal"
+}
+
+func (m MigrateFixNotificationMetadataExperimentModal20241212) Description() string {
+	return `Fix notification metadata for experiment modal, where notification metadata is a null string 'null' to empty json {}`
+}
+
+func (m MigrateFixNotificationMetadataExperimentModal20241212) Down(ctx context.Context, db *gorm.DB) error {
+	return nil
+}
+
+func (m MigrateFixNotificationMetadataExperimentModal20241212) Up(ctx context.Context, db *gorm.DB) error {
+	log := logging.FromContext(ctx)
+
+	// Start a transaction
+	return db.Transaction(func(tx *gorm.DB) error {
+		// Update all chore where notification metadata is a null stirng 'null' to empty json {}:
+
+		if err := tx.Table("chores").Where("notification_metadata = ?", "null").Update("notification_metadata", "{}").Error; err != nil {
+			log.Errorf("Failed to update chores with null notification metadata: %v", err)
+			return err
+		}
+
+		return nil
+	})
+}
+
+// Register this migration
+func init() {
+	Register(MigrateFixNotificationMetadataExperimentModal20241212{})
+}