//
//  GroupListPopView.swift
//  QuickLocation
//
//  Created by 八条 on 2026/5/30.
//

import UIKit

class GroupListPopView: UIView {

    private static let shared = GroupListPopView(frame: CGRect(origin: .zero, size: kScreenSize))

    private var groupList: [GroupInfoModel] = []
    
    /// 完成选中进行回调
    private var completion: ((String?) -> Void)?
    
    @objc func tap() {
        completion?(nil)
    }
    
    private var defaultGroupKey: String = "" {
        didSet {
            tableView.reloadData()
        }
    }
    
    private lazy var bgView: UIView = {
        let view = UIView()
        view.backgroundColor = .black.withAlphaComponent(0.5)
        view.clipsToBounds = true
        return view
    }()
    
    lazy var infoView: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.cornerRadius = 20
        return view
    }()
    
    lazy var tableView: UITableView = {
        let tableView = UITableView(frame: .zero, style: .plain)
        tableView.backgroundColor = .white
        tableView.separatorStyle = .none
        tableView.estimatedRowHeight = 68
        tableView.showsVerticalScrollIndicator = false
        tableView.bounces = false
        tableView.isScrollEnabled = false
        tableView.register(GroupListPopCell.self)
        tableView.dataSource = self
        tableView.delegate = self
        return tableView
    }()
    
    // MARK: - Init
    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .clear
        addSubview(bgView)
        bgView.addSubview(tableView)
        let tap = UITapGestureRecognizer(target: self, action: #selector(tap))
        tap.delegate = self
        addGestureRecognizer(tap)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        tableView.setNeedsLayout()
        tableView.layoutIfNeeded()
        tableView.setCornerRadius(corners: [.bottomLeft, .bottomRight], withCornerRadii: CGSize(width: 16, height: 16))
    }
}

// MARK: - Public
extension GroupListPopView {
    
    /// 显示选择弹窗
    /// - Parameters:
    ///   - start: 显示起始点
    static func show(start: CGPoint,
                     defaultGroupKey: String,
                     groupList: [GroupInfoModel],
                     completion: @escaping ((String?) -> Void)) {
        guard let superView = kKeyWindow else {
            return
        }
        
        if GroupListPopView.shared.superview != nil {
            GroupListPopView.shared.removeFromSuperview()
            GroupListPopView.shared.tableView.frame = .zero
        }
        GroupListPopView.shared.defaultGroupKey = defaultGroupKey
        GroupListPopView.shared.bgView.alpha = 1
        GroupListPopView.shared.bgView.frame = CGRect(origin: start, size: CGSize(width: kScreenWidth, height: kScreenHeight - start.y))
        superView.addSubview(GroupListPopView.shared)
        superView.bringSubviewToFront(GroupListPopView.shared)
        let tableViewHeight = CGFloat(GroupListPopView.shared.groupList.count * 30) + 6
        GroupListPopView.shared.tableView.frame = CGRect(x: 0, y: -tableViewHeight, width: kScreenWidth, height: tableViewHeight)
        GroupListPopView.shared.tableView.alpha = 0
        GroupListPopView.shared.completion = { (text) in
            completion(text)
            GroupListPopView.dismiss()
        }
        UIView.animate(withDuration: 0.25) {
            GroupListPopView.shared.tableView.alpha = 1
            GroupListPopView.shared.tableView.frame = CGRect(x: 0, y: 0, width: kScreenWidth, height: tableViewHeight)
        }
    }
    
    /// 关闭
    static func dismiss() {
        guard GroupListPopView.shared.superview != nil else { return }
        let tableViewHeight = GroupListPopView.shared.frame.height
        UIView.animate(withDuration: 0.15) {
            GroupListPopView.shared.tableView.alpha = 0
            GroupListPopView.shared.tableView.frame = CGRect(x: 0, y: -tableViewHeight, width: kScreenWidth, height: tableViewHeight)
        }
        UIView.animate(withDuration: 0.25, delay: 0, options: [.curveEaseIn]) {
            GroupListPopView.shared.bgView.alpha = 0
        } completion: { _ in
            GroupListPopView.shared.removeFromSuperview()
            GroupListPopView.shared.tableView.frame = .zero
        }
    }
}

// MARK: - UIGestureRecognizerDelegate
extension GroupListPopView: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        if let view = touch.view, !(view == self || view == bgView) {
            return false
        }
        return true
    }
}

// MARK: - UITableViewDataSource & UITableViewDelegate
extension GroupListPopView: UITableViewDataSource, UITableViewDelegate {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        groupList.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell: GroupListPopCell = tableView.dequeueReusableCell(for: indexPath)
        cell.configure(model: groupList[indexPath.row],
                       isSelected: defaultGroupKey == groupList[indexPath.row].group_key)
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        completion?(groupList[indexPath.row].group_key)
    }
}


// MARK: - GroupListPopCell
class GroupListPopCell: UITableViewCell {

    func configure(model: GroupInfoModel, isSelected: Bool) {
        avaterImgView.image = model.groupIcon
        nameLab.text = model.name
        bgView.isHidden = !isSelected
    }
    
    override init(style: CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        setupSubviews()
    }
    
    private func setupSubviews() {
        contentView.addSubview(bgView)
        contentView.addSubview(avaterImgView)
        contentView.addSubview(nameLab)
        
        bgView.layoutChain.edges()
        
        avaterImgView.layoutChain
            .edgesVertical(14)
            .left(15)
            .width(40)
            .height(40)
        
        nameLab.layoutChain
            .leftToRightOfView(avaterImgView, offset: 11)
            .right(100, relation: .greaterThanOrEqual)
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }
    
    lazy var bgView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EFF9FF")
        
        let lineView = UIView()
        lineView.backgroundColor = UIColor(hexStr: "#16B3FF")
        view.addSubview(lineView)
        lineView.layoutChain
            .left()
            .edgesVertical()
            .width(6)
        
        let selectedIcon = UIImageView()
        selectedIcon.image = UIImage(named: "Group/selected")
        view.addSubview(selectedIcon)
        selectedIcon.layoutChain
            .right(14)
            .centerY()
            .width(24)
            .height(24)
        
        view.isHidden = true
        
        return view
    }()
    
    lazy var avaterImgView: UIImageView = {
        let view = UIImageView()
        view.backgroundColor = .lightGray
        view.contentMode = .scaleAspectFill
        view.cornerRadius = 20
        return view
    }()
    
    lazy var nameLab: UILabel = {
        let label = UILabel()
        label.textColor = ThemeManager.shared.color.contentColor
        label.font = .systemFont(ofSize: 15, weight: .medium)
        return label
    }()
}