/*

 Copyright (C) 2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 This controller displays a map and demonstrates use of setting its coordinate region, zoom level, and addition and removal of annotations.

 */

import WatchKit

class MapDetailController: WKInterfaceController {

    @IBOutlet var map :WKInterfaceMap!

    var currentRegion :MKCoordinateRegion

    var currentSpan :MKCoordinateSpan

    @IBOutlet var appleButton :WKInterfaceButton!

    @IBOutlet var tokyoButton :WKInterfaceButton!

    @IBOutlet var inButton :WKInterfaceButton!

    @IBOutlet var outButton :WKInterfaceButton!

    @IBOutlet var pinsButton :WKInterfaceButton!

    @IBOutlet var imagesButton :WKInterfaceButton!

    @IBOutlet var removeAllButton :WKInterfaceButton!

    override init() {

        currentSpan = MKCoordinateSpanMake(1.0, 1.0)

        currentRegion = MKCoordinateRegionForMapRect(MKMapRectMake(0, 0, 1.0, 1.0))

    }

    @IBAction func goToTokyo() {

        let coordinate = CLLocationCoordinate2DMake(35.4, 139.4)

        setMapTo(coordinate: coordinate)

    }

    @IBAction func goToApple() {

        let coordinate = CLLocationCoordinate2DMake(37.331793, -122.029584)

        setMapTo(coordinate: coordinate)

    }

    func setMapTo(coordinate :CLLocationCoordinate2D) {

        let region = MKCoordinateRegionMake(coordinate, currentSpan)

        currentRegion = region;

        let newCenterPoint = MKMapPointForCoordinate(coordinate)

        map.setVisibleMapRect(MKMapRectMake(newCenterPoint.x, newCenterPoint.y, currentSpan.latitudeDelta, currentSpan.longitudeDelta))

        map.setRegion(region)

    }

    @IBAction func zoomOut() {

        let span = MKCoordinateSpanMake(currentSpan.latitudeDelta * 2, currentSpan.longitudeDelta * 2)

        let region = MKCoordinateRegionMake(currentRegion.center, span)

        currentSpan = span

        map.setRegion(region)

    }

    @IBAction func zoomIn() {

        let span = MKCoordinateSpanMake(currentSpan.latitudeDelta * 0.5, currentSpan.longitudeDelta * 0.5)

        let region = MKCoordinateRegionMake(currentRegion.center, span)

        currentSpan = span

        map.setRegion(region)

    }

    @IBAction func addPinAnnotations() {

        map.addAnnotation(currentRegion.center, with: .red)

        let greenCoordinate = CLLocationCoordinate2DMake(currentRegion.center.latitude, currentRegion.center.longitude - 0.3)

        map.addAnnotation(greenCoordinate, with:.green)

        let purpleCoordinate = CLLocationCoordinate2DMake(currentRegion.center.latitude, currentRegion.center.longitude + 0.3)

        map.addAnnotation(purpleCoordinate, with:.purple)

    }

    @IBAction func addImageAnnotations() {

        let firstCoordinate = CLLocationCoordinate2DMake(currentRegion.center.latitude, currentRegion.center.longitude - 0.3)

        // Uses image in WatchKit app bundle.

        map.addAnnotation(firstCoordinate, with: UIImage(named:"Whale"), centerOffset: CGPoint.zero)

        let secondCoordinate = CLLocationCoordinate2DMake(currentRegion.center.latitude, currentRegion.center.longitude + 0.3)

        // Uses image in WatchKit Extension bundle.

        let image = UIImage(named:"Bumblebee")

        map.addAnnotation(secondCoordinate, with:image, centerOffset:CGPoint.zero)

    }

    @IBAction func removeAll() {

        map.removeAllAnnotations()

    }

}