add mutation update user info

src/user/user.schema.ts

@@ -69,11 +69,29 @@ export class UserSchema extends PothosSchema {
         },
       }),
     }));
-  }
 
-  // Mutation section
-  @Pothos()
-  createUser() {
-    return 'createUser';
+    // Mutation section
+    this.builder.mutationFields((t) => ({
+      updateUser: t.prismaField({
+        type: this.user(),
+        args: {
+          input: t.arg({
+            type: this.builder.generator.getUpdateInput('User'),
+            required: true,
+          }),
+          where: t.arg({
+            type: this.builder.generator.getWhereUnique('User'),
+            required: true,
+          }),
+        },
+        resolve: async (query, root, args, ctx, info) => {
+          return await this.prisma.user.update({
+            ...query,
+            where: args.where,
+            data: args.input,
+          });
+        },
+      }),
+    }));
   }
 }