import { Injectable } from '@angular/core';
import { z } from 'zod';
import { Dexie, EntityTable, liveQuery } from 'Dexie';

const UserProfilePicture = z.object({
  base64: z.string(),
  id: z.number().optional(),
})

const UserTable = z.object({
  ChunksBase64: z.number(),
});

export type UserProfilePicture = z.infer<typeof UserProfilePicture>

// Database declaration (move this to its own module also)
const session = new Dexie('session') as Dexie & {
  profilePicture: EntityTable<UserProfilePicture, 'id'>;
};

session.version(1).stores({
  profilePicture: '++id, base64'
});

@Injectable({
  providedIn: 'root'
})
export class UserLocalRepositoryService {

  constructor() { }


  async addProfilePicture(data: UserProfilePicture) {
    try {
      await session.transaction('rw', session.profilePicture, async () => {
      // Clear existing records from myTable
      await session.profilePicture.clear();
      await session.profilePicture.add(data);
      });
      // console.log('Clear and add operations completed within transaction.');
    } catch (error) {
      console.error('Error performing transaction:', error, data);
    }
  }


  getLiveProfilePicture() {
    return  liveQuery(() =>
      session.profilePicture.orderBy('id').reverse().first()
    )
  }
}