//
//  LocationPickerView.swift
//  QuickLocation
//

import UIKit
#if !targetEnvironment(simulator)
import AMapNaviKit
#endif

final class LocationPickerView: UIView {
    static let cellIdentifier = "LocationSuggestionCell"

    private var resultPanelHeightConstraint: NSLayoutConstraint?

    #if !targetEnvironment(simulator)
    lazy var mapView: MAMapView! = {
        let map = MAMapView()
        map.showsCompass = false
        map.showsScale = false
        map.zoomLevel = 15
        return map
    }()
    #endif

    let backBtn: UIButton = {
        let button = UIButton(type: .custom)
        button.setBackgroundImage(UIImage(named: "Common/back"), for: .normal)
        button.backgroundColor = .clear
        button.extendEdgeInsets = UIEdgeInsets(top: 20, left: 18, bottom: 20, right: 20)
        return button
    }()
    let recenterBtn: UIButton = {
        let button = UIButton(type: .custom)
        button.setImage(UIImage(named: "IM/location_recenter"), for: .normal)
        button.backgroundColor = .white
        button.layer.cornerRadius = 10
        button.layer.shadowColor = UIColor.black.cgColor
        button.layer.shadowOffset = CGSize(width: 0, height: 2)
        button.layer.shadowRadius = 6
        button.layer.shadowOpacity = 0.12
        return button
    }()
    let centerPinView: UIImageView = {
        let view = UIImageView(image: UIImage(named: "IM/location_pin"))
        view.contentMode = .scaleAspectFit
        view.isUserInteractionEnabled = false
        return view
    }()
    let searchField: UITextField = {
        let field = UITextField()
        field.placeholder = "搜索地点、商圈或道路"
        field.font = .systemFont(ofSize: 14)
        field.clearButtonMode = .whileEditing
        field.returnKeyType = .search
        field.backgroundColor = UIColor(hexStr: "#F3F3F3")
        field.cornerRadius = 11
        field.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 16, height: 36))
        field.leftViewMode = .always
        return field
    }()
    let resultTableView: UITableView = {
        let table = UITableView(frame: .zero, style: .plain)
        table.backgroundColor = .white
        table.separatorColor = UIColor(hexStr: "#EEEEEE")
        table.rowHeight = 74
        table.register(LocationSuggestionCell.self, forCellReuseIdentifier: cellIdentifier)
        table.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: kSafeBottomMargin, right: 0)
        return table
    }()
    let emptyLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 13)
        label.textColor = UIColor(hexStr: "#8A8A8A")
        label.textAlignment = .center
        label.numberOfLines = 0
        label.isHidden = true
        return label
    }()
    let confirmBtn: UIButton = {
        let button = UIButton(type: .custom)
        button.setTitle("确认", for: .normal)
        button.setTitleColor(.white, for: .normal)
        button.setTitleColor(UIColor.white.withAlphaComponent(0.6), for: .disabled)
        button.titleLabel?.font = .systemFont(ofSize: 14, weight: .medium)
        button.setBackgroundImage(UIImage(named: "Common/button_bg_2"), for: .normal)
        button.cornerRadius = 8
        button.isEnabled = false
        return button
    }()
    private let resultPanel: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.layer.cornerRadius = 24
        view.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
        view.clipsToBounds = true
        return view
    }()

    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = UIColor(hexStr: "#EFF7F8")
        setupUI()
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    private func setupUI() {
        #if !targetEnvironment(simulator)
        addSubview(mapView)
        mapView.layoutChain.edges(excludingEdge: .bottom).bottom(250 + kSafeBottomMargin)
        addSubview(centerPinView)
        #endif
        addSubview(backBtn)
        addSubview(recenterBtn)
        addSubview(confirmBtn)
        addSubview(resultPanel)
        resultPanel.addSubview(searchField)
        resultPanel.addSubview(resultTableView)
        resultPanel.addSubview(emptyLabel)

        backBtn.layoutChain.top(kStatusBarHeight + 12).left(18).width(32).height(32)
        recenterBtn.layoutChain.left(13).bottomToTopOfView(resultPanel, offset: -24).width(38).height(38)
        confirmBtn.layoutChain.right(14).width(50).height(30).centerY(backBtn)
        resultPanel.layoutChain.edgesHorzontal().bottom().height(290)
        resultPanelHeightConstraint = resultPanel.layoutChain.constraint
        searchField.layoutChain.top(13).edgesHorzontal(15).height(38)
        resultTableView.layoutChain.topToBottomOfView(searchField, offset: 13).edgesHorzontal().bottom()
        emptyLabel.layoutChain.centerX().centerY().edgesHorzontal(40)
        #if !targetEnvironment(simulator)
        centerPinView.layoutChain.centerX(mapView).centerY(mapView, offset: -28).width(34).height(56)
        #endif
    }

    func setResultPanelHeight(_ height: CGFloat, duration: TimeInterval) {
        guard let resultPanelHeightConstraint,
              abs(resultPanelHeightConstraint.constant - height) > 0.5 else { return }
        layoutIfNeeded()
        resultPanelHeightConstraint.constant = height
        UIView.animate(withDuration: duration,
                       delay: 0,
                       options: [.beginFromCurrentState, .curveEaseInOut]) {
            self.layoutIfNeeded()
        }
    }

    #if !targetEnvironment(simulator)
    func cleanupMap() {
        mapView?.delegate = nil
        mapView?.removeFromSuperview()
        mapView = nil
    }
    #endif
}