import { Injectable } from '@angular/core';
import { JournalEntry } from 'src/interfaces/interfaces';

@Injectable({
  providedIn: 'root',
})
export class NotesService {
  public isUnsaved: boolean = false;

  private isNewEntry: boolean = false;

  private unsavedEntry: JournalEntry | null = null;

  private unsavedIndex: number = -1;

  /**
   * Stores the unsaved entry and the index where it can be found.
   * @param entry The entry that was edited but not yet saved.
   * @param index The index of the entry in the entries list.
   */
  public setEntry(
    entry: JournalEntry,
    index: number,
    isNewEntry: boolean,
  ): void {
    this.unsavedEntry = entry;
    this.unsavedIndex = index;
    this.isNewEntry = isNewEntry;
    this.isUnsaved = true;
  }

  /**
   * Returns the entry that was edited but not yet saved when leaving the notes view.
   * @returns The unsaved entry and its index.
   */
  public getEntry(): { [key: string]: any } {
    return {
      entry: this.unsavedEntry,
      index: this.unsavedIndex,
      isNewEntry: this.isNewEntry,
    };
  }

  /**
   * Marks the entry as saved and resets the unsaved entry and index.
   */
  public markAsSaved(): void {
    this.isUnsaved = false;
    this.unsavedEntry = null;
    this.isNewEntry = false;
    this.unsavedIndex = -1;
  }
}