//
//  EQNMapAnnotationSeismic.swift
//  Earthquake Network
//
//  Created by Andrea Busi on 07/03/21.
//  Copyright © 2021 Earthquake Network. All rights reserved.
//

import Foundation
import MapKit


class EQNMapAnnotationSeismic: NSObject, MKAnnotation {
        
    var coordinate: CLLocationCoordinate2D
    var title: String?
    var image: UIImage?
    
    let seismic: EQNSisma

    // MARK: - Init
    
    init(seismic: EQNSisma) {
        self.seismic = seismic
        self.coordinate = CLLocationCoordinate2D(latitude: seismic.coordinate.coordinate.latitude, longitude: seismic.coordinate.coordinate.longitude)
        self.image = Self.image(for: seismic)
        if let date = seismic.date {
            self.title = EQNUtility.formattedTimeDifference(from: date)
        }

        super.init()
    }
    
    // MARK: - Private
    
    private class func image(for seismic: EQNSisma) -> UIImage? {
        let magnitude = seismic.magnitude.doubleValue
        
        let color: String
        if magnitude < 2.0 {
            color = "white"
        } else if magnitude < 3.5 {
            color = "green"
        } else if magnitude < 4.5 {
            color = "yellow"
        } else if magnitude < 5.5 {
            color = "red"
        } else {
            color = "purple"
        }
        
        let icon: String
        switch seismic.provider.uppercased() {
        case "USGS": icon = "star"
        case "SGC": icon = "star3"
        case "CSN": icon = "star3f"
        case "SSN": icon = "star4"
        case "INPRES": icon = "star4r"
        case "FUNVISIS": icon = "star6"
        case "Ineter": icon = "triangle"
        case "RSN": icon = "triangle2"
        case "PHIVOLCS": icon = "triround_inner"
        case "IGEPN": icon = "triround"
        case "INGV": icon = "circle"
        case "EMSC": icon = "dyamond"
        case "IGP": icon = "dyamond_round"
        case "JMA": icon = "esa"
        case "GEONET": icon = "oct"
        case "CSI": icon = "penta"
        case "IGN": icon = "square"
        case "UASD", "BDTIM", "NCS": icon = "thick_star"
        case "RSPR": icon = "star6f"
        default: icon = ""
        }
        
        return UIImage(named: "\(icon)_\(color)")
    }
}