#import "MapViewController.h"

@interface MapViewController () {
  MTMapView *_mapView;
  NSArray *__markerList;
  NSString *__markerImageUrl;
  NSString *__markerImageName;
}

@end

@implementation MapViewController

NSArray *createMarker(NSArray *markerList, NSString *markerImageUrl, NSString *markerImageName) {
  NSMutableArray *pointList = [[NSMutableArray alloc] init];

  for (NSDictionary *point in markerList) {
    MTMapPOIItem* item = [MTMapPOIItem poiItem];
    item.itemName = point[@"markerName"];
    item.mapPoint = [MTMapPoint mapPointWithGeoCoord:MTMapPointGeoMake([point[@"lat"] doubleValue], [point[@"lng"] doubleValue])];
    item.showAnimationType = MTMapPOIItemShowAnimationTypeSpringFromGround;

    item.markerType = markerImageUrl != nil || markerImageName != nil ? MTMapPOIItemMarkerTypeCustomImage : MTMapPOIItemMarkerTypeBluePin;

    if (markerImageUrl != nil) {
      item.customImage = [[[UIImage alloc] init] initWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString: markerImageUrl]]];
    }
    if (markerImageName != nil) {
      item.customImageName = markerImageName;
    }

    [pointList addObject:item];
  }

  return pointList;
}

- (void)setMarkerImageName:(NSString *)markerImageName {
  __markerImageName = markerImageName;
  [self load];
}

- (void)setMarkerImageUrl:(NSString *)markerImageUrl {
  __markerImageUrl = markerImageUrl;
  [self load];
}

- (void)setMarkerList:(NSArray *)markerList {
  __markerList = markerList;
  [self load];
}

- (void)setCenterPoint:(NSDictionary *)centerPoint {
  if (centerPoint == nil) {
    _lat = 37.59523;
    _lng = 127.08600;
  } else {
    _lat = [centerPoint[@"lat"] doubleValue];
    _lng = [centerPoint[@"lng"] doubleValue];
  }
  [self load];
}

- (void)load {
  if (_mapView == nil) {
    return;
  }

  [_mapView removeAllPOIItems];
  [_mapView addPOIItems: createMarker(__markerList, __markerImageUrl, __markerImageName)];
  [_mapView setMapCenterPoint: [MTMapPoint mapPointWithGeoCoord:MTMapPointGeoMake(_lat, _lng)] animated:YES];

  [self addSubview: _mapView];
}

- (instancetype)init
{
  self = [super init];
  if (self && _mapView == nil) {
    _mapView = [[MTMapView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame))];
    _mapView.delegate = self;
    _mapView.baseMapType = MTMapTypeStandard;
    [_mapView fitMapViewAreaToShowAllPOIItems];

    [self load];
  }
  return self;
}

- (void)mapView:(MTMapView*)mapView finishedMapMoveAnimation:(MTMapPoint*)mapCenterPoint
{
  _onChange(@{
    @"zoomLevel": @(mapView.zoomLevel),
    @"lat": @(mapCenterPoint.mapPointGeo.latitude),
    @"lng": @(mapCenterPoint.mapPointGeo.longitude)
  });
}

@end