import {Component, ElementRef, Input, OnChanges, ViewChild} from '@angular/core';
import {PhotoDTO} from '../../../../common/entities/PhotoDTO';
import {Dimension, IRenderable} from '../../model/IRenderable';
import {GalleryMapLightboxComponent} from './lightbox/lightbox.map.gallery.component';

@Component({
  selector: 'gallery-map',
  templateUrl: './map.gallery.component.html',
  styleUrls: ['./map.gallery.component.css']
})
export class GalleryMapComponent implements OnChanges, IRenderable {

  @Input() photos: Array<PhotoDTO>;
  @ViewChild(GalleryMapLightboxComponent) mapLightbox: GalleryMapLightboxComponent;

  mapPhotos: Array<{ latitude: number, longitude: number }> = [];
  mapCenter = {latitude: 0, longitude: 0};
  @ViewChild('map') map: ElementRef;

  //TODO: fix zooming
  ngOnChanges() {
    this.mapPhotos = this.photos.filter(p => {
      return p.metadata && p.metadata.positionData && p.metadata.positionData.GPSData &&
        p.metadata.positionData.GPSData.latitude && p.metadata.positionData.GPSData.longitude;
    }).map(p => {
      return {
        latitude: p.metadata.positionData.GPSData.latitude,
        longitude: p.metadata.positionData.GPSData.longitude
      };
    });

    if (this.mapPhotos.length > 0) {
      this.mapCenter = this.mapPhotos[0];
    }

  }

  click() {
    this.mapLightbox.show(this.getDimension());
  }

  public getDimension(): Dimension {
    return <Dimension>{
      top: this.map.nativeElement.offsetTop,
      left: this.map.nativeElement.offsetLeft,
      width: this.map.nativeElement.offsetWidth,
      height: this.map.nativeElement.offsetHeight
    };
  }
}