import { Injectable, signal } from '@angular/core';

export interface FastcheckData {
  fastcheck: string;
  amount: number | null;
  code: string;
  expiration?: string;
}

/**
 * Shared state between the home (Fastcheck) page and the create-new page.
 * When a new fastcheck is created via POST /fastcheck, the create page stores
 * the returned data here and the home page reads it to autofill its fields.
 */
@Injectable({ providedIn: 'root' })
export class FastcheckService {
  readonly created = signal<FastcheckData | null>(null);

  setCreated(data: FastcheckData): void {
    this.created.set(data);
  }

  consume(): FastcheckData | null {
    const value = this.created();
    this.created.set(null);
    return value;
  }
}