Lighthouse Get Cache Key via php

[illusive-ch]

I have this

 chatsPaginated(input: ChatsInput @spread): [Chat!]
        @guard
        @can(ability: "viewAny", model: "App\\Models\\Chat")
        @paginate(
            defaultCount: 10
            builder: "App\\GraphQL\\Queries\\ChatsPaginatedQuery@builder"
        )
        @cache(private: false)
        @cacheKey(fields: ["user_id"])
        @orderBy(column: "chat_updated_at", direction: DESC)

However, if a user is trashed using $user->delete(), I would need to flush the cache for all chat lists the user belongs to. I can do this with an observer and job, but I need help getting the actual key used by Lighthouse.

Stored cache key: lighthouse:query:dcda0ee478e6abe7cee5043b3221241c75c1fb13e8993e42a5196591983d53c0 

Here is the written test:

/**
     * @test
     */
    public function when_a_user_deleted_does_not_show_chat()
    {
        $user = User::factory()->create();
        $user2 = User::factory()->for($user->brand)->create();

        $chat = Chat::factory()->create(['is_paid' => false]);
        $chat->users()->attach([$user->id, $user2->id]);

        $this->actingAs($user);

        $response = $this->graphQL('
            query {
                chatsPaginated {
                    data{
                        id
                        users {
                            id
                            name
                        }
                    }
                }
            }
        ')->assertStatus(200);

        // Log cache keys after the query
        $this->assertCount(1, $response->json('data.chatsPaginated.data'));

        $user2->delete();

        // Dump all cache keys again
        $response = $this->graphQL('
            query {
                chatsPaginated {
                    data{
                        id
                        users {
                            id
                            name
                    }
                }
            }
        ')->assertStatus(200);

        $this->assertCount(0, $response->json('data.chatsPaginated.data'));

    }

[spawnia]

You can get inspired by the implementation of @clearCache, see https://github.com/nuwave/lighthouse/blob/master/src/Cache/ClearCacheDirective.php.