//
//  EQNMapAnnotationUserReport.swift
//  Earthquake Network
//
//  Created by Andrea Busi on 06/03/21.
//  Copyright © 2021 Earthquake Network. All rights reserved.
//

import Foundation
import MapKit


@objc
class EQNMapAnnotationUserReport: NSObject, MKAnnotation {
        
    @objc var coordinate: CLLocationCoordinate2D
    @objc var title: String?
    @objc var subtitle: String?
    @objc var image: UIImage?
    @objc var timeDifference: String?
    
    var report: EQNSegnalazione?
    
    // MARK: - Init
    
    convenience init(report: EQNSegnalazione) {
        let coordinate = report.coordinate.coordinate
        let magnitude = report.intensity
        
        self.init(magnitude: magnitude, coordinate: coordinate)
        self.report = report
        self.timeDifference = EQNUtility.formattedTimeDifference(from: report.date)
    }
    
    @objc init(
        magnitude: Int,
        coordinate: CLLocationCoordinate2D
    ) {
        self.title = Self.title(for: magnitude)
        self.subtitle = Self.subtitle(for: magnitude)
        self.coordinate = coordinate
        self.image = Self.image(for: magnitude)
    }
    
    // MARK: - Helper
    
    private static func image(for magnitute: Int) -> UIImage? {
        guard let color = UIColor(named: "Mercalli \(magnitute)") else {
            print("[EQNMapAnnotationUserReport] Unable to get a color for magnitude: \(magnitute)")
            return nil
        }
        
        return UIImage.circle(diameter: EQNCustomAnnotationView.SmallHeight, color: color, borderWidth: 1.0, borderColor: .darkGray)
    }
    
    private static func title(for magnitude: Int) -> String {
        let grade = magnitude / 10
        let roman = grade.toRoman()
        return String(format: NSLocalizedString("mercalli_intensity", comment: ""), roman)
    }
    
    private static func subtitle(for magnitude: Int) -> String {
        let grade = magnitude / 10
        let roman = grade.toRoman()
        let string = NSLocalizedString("mercalli_\(roman)", comment: "")
        // strings are in the format like "II - Appena percepito"
        // so we are going to remove the "II" from the string
        let components = string.components(separatedBy: " - ")
        if components.count > 1 {
            return components[1]
        }
        return string
    }
}