import { Component, OnInit } from '@angular/core';
import { ElsSortService } from '../els-sort.service';
import { Album } from '../model/album';
import { Bucket } from '../model/bucket';
import { Song } from '../model/song';

import { Utils } from '../utils';

@Component({
  selector: 'app-to-sort',
  templateUrl: './to-sort.component.html',
  styleUrls: ['./to-sort.component.css']
})
export class ToSortComponent implements OnInit {
  numberToArray = Utils.numberToArray;
  // Stats var
  totalTime = 0;
  totalSize = 0;
  trackCountSong = 0;
  neverListenSong = 0;

  // Global var
  toSortAlbum: Bucket[] = [];
  albums = []

  constructor(private elsService: ElsSortService) { }

  ngOnInit(): void {
    // **** GET STATS ****//
    this.elsService.getTime().then(result => this.totalTime = result);
    this.elsService.getSize().then(result => this.totalSize = result);
    this.elsService.getCountSong().then(result => this.trackCountSong = result);
    this.elsService.getCountNeverListenSong().then(result => this.neverListenSong = result);

    // **** GET ALBUMS ****//
    const tmpToSortAlbums: Bucket[] = [];
    this.elsService.getAlbums().subscribe(buckets => {
      buckets.forEach(bucket => {
        if (tmpToSortAlbums.length === 0) {
          tmpToSortAlbums.push(bucket);
        } else {
          let found = false;
          tmpToSortAlbums.forEach(element => {
            if (element.key === bucket.key) {
              element.doc_count += bucket.doc_count;
              found = true;
            }
          });
          if (!found) {
            tmpToSortAlbums.push(bucket);
          }
        }
      });

      this.toSortAlbum = tmpToSortAlbums;
      this.toSortAlbum.forEach(bucket => this.getAlbum(bucket));
      // console.log(this.toSortAlbum)
      // console.log(this.albums)
    });
  }

  private getAlbum(albumBucket: Bucket) {
    // For each bucket.key (album name), get Album document
    // Use track count to compare
    this.elsService.getArtistFromAlbumName(albumBucket.key).subscribe(albums => {
      // Identification of the good album
      let goodAlbum;
      if (albums.length > 1) {
        // More than one result for an album name: search good by track count
        albums.forEach(album => {
          if (album['Track Count'] === albumBucket.doc_count) {
            goodAlbum = album;
          }
        });
      } else {
        // Just one result for album name
        goodAlbum = albums[0];
      }

      // TODO Crap security if no good album found
      if (goodAlbum == undefined) {
        goodAlbum = albums[0]
      }

      this.albums[albumBucket.key] = goodAlbum;
    });
  }

}