import { Injectable, NgZone } from '@angular/core';
import { WorldArea } from '../_models/world-area';
import { invoke } from '@tauri-apps/api';
import { Observable, ReplaySubject, Subject, filter, from, map } from 'rxjs';
import naturalCompare from 'natural-compare';
import { Fuzzr } from '../fuzzr/fuzzr';

@Injectable({
  providedIn: 'root'
})
export class WorldAreaService {
  private worldAreas?: Map<string, WorldArea>;
  public matcher?: Fuzzr;

  private worldAreasSubject = new ReplaySubject<Map<string, WorldArea>>();
  private fullWorldAreasSubject = new ReplaySubject<Map<string, WorldArea>>();

  constructor(private zone: NgZone) {
    from(invoke<Map<string, WorldArea>>('load_world_areas')).subscribe((data) => {
      const entries = Object.entries(data).sort((a, b) => a[1].key_id - b[1].key_id);
      this.worldAreas = new Map(entries);
      this.zone.run(() => this.worldAreasSubject.next(this.worldAreas!));
      this.matcher = new Fuzzr(this.worldAreas, {
        toString: (e: [string, WorldArea]) => e[1].name
      })
    });

    from(invoke<Map<string, WorldArea>>('load_full_world_areas')).subscribe((data) => {
      const entries = Object.entries(data).sort((a, b) => a[1].key_id - b[1].key_id);
      this.worldAreas = new Map(entries);
      this.zone.run(() => this.fullWorldAreasSubject.next(this.worldAreas!));
    });
  }

  getWorldAreas(): Observable<Map<string, WorldArea>> {
    return this.worldAreasSubject.asObservable().pipe(
      filter(worldAreas => !!worldAreas),
    );
  }

  getFullWorldAreas(): Observable<Map<string, WorldArea>> {
    return this.fullWorldAreasSubject.asObservable().pipe(
      filter(worldAreas => !!worldAreas),
    );
  }

  hasTrial(key: string): boolean {
    switch (key) {
      case "1_1_7_1": return true;
      case "1_2_5_1": return true;
      case "1_2_6_2": return true;
      case "1_3_3_1": return true;
      case "1_3_6": return true;
      case "1_3_15": return true;
      case "2_6_7_1": return true;
      case "2_7_4": return true;
      case "2_7_5_2": return true;
      case "2_8_5": return true;
      case "2_9_7": return true;
      case "2_10_9": return true;
      default: return false;
    }
  }
}