//
//  MapAnnotationView.swift
//  Runner
//
//  Created by Groot on 2025/5/9.
//

import UIKit
import MapKit

class MapAnnotationView: MKAnnotationView {
    
    static let identifier: String = "MapAnnotationView"

    var marker: ATMapMarker?
    private let imageView = UIImageView()
    
    override init(annotation: MKAnnotation?, reuseIdentifier: String?) {
        super.init(annotation: annotation, reuseIdentifier: reuseIdentifier)
        self.marker = annotation as? ATMapMarker
        
        // 确保视图可见
        self.canShowCallout = false
        self.isEnabled = true
        self.isHidden = false
        
        setupImageView()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    private func setupImageView() {
        // 设置默认图像
        let defaultImage = UIImage()
        imageView.image = defaultImage
        imageView.contentMode = .scaleAspectFit
        
        // 添加图像视图到注释视图
        addSubview(imageView)
        
        // 设置图像视图的大小和位置
        imageView.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
        
        // 设置注释视图的大小
        self.frame = imageView.frame
        
        // 设置注释视图的中心点偏移
        self.centerOffset = CGPoint(x: 0, y: -imageView.frame.height / 2)
    }
    
    override func prepareForDisplay() {
        super.prepareForDisplay()
        
        // 根据标记状态更新图像
        updateImage()
    }
    
    private func updateImage() {
        // 使用已有的图像资源，而不是不存在的 marker_selected 和 marker_default
        let defaultImage = UIImage()
        imageView.image = defaultImage
        
        // 如果被选中，可以修改图像视图的外观
        if let isSelected = marker?.isSelected, isSelected {
            imageView.layer.borderWidth = 2.0
            imageView.layer.borderColor = UIColor.blue.cgColor
            imageView.layer.cornerRadius = imageView.frame.width / 2
        } else {
            imageView.layer.borderWidth = 0
        }
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        if selected {
            self.marker?.isSelected = true
        } else {
            self.marker?.isSelected = false
        }
        
        // 更新图像以反映选中状态
        updateImage()
    }
}