import type { Snapshot, User, Workspace } from '@prisma/client';

import { Flatten, Payload } from './types';

export interface WorkspaceEvents {
  deleted: Payload<Workspace['id']>;
  blob: {
    deleted: Payload<{
      workspaceId: Workspace['id'];
      name: string;
    }>;
  };
}

export interface DocEvents {
  updated: Payload<
    Pick<Snapshot, 'id' | 'workspaceId'> & {
      previous: Pick<Snapshot, 'blob' | 'state' | 'updatedAt'>;
    }
  >;
  deleted: Payload<Pick<Snapshot, 'id' | 'workspaceId'>>;
}

export interface UserEvents {
  updated: Payload<Omit<User, 'password'>>;
  deleted: Payload<User>;
}

/**
 * Event definitions can be extended by
 *
 * @example
 *
 * declare module './event/def' {
 *   interface UserEvents {
 *     created: Payload<User>;
 *   }
 * }
 *
 * assert<Event, 'user.created'>()
 */
export interface EventDefinitions {
  workspace: WorkspaceEvents;
  snapshot: DocEvents;
  user: UserEvents;
}

export type EventKV = Flatten<EventDefinitions>;

export type Event = keyof EventKV;
export type EventPayload<E extends Event> = EventKV[E];
export type { Payload };