//
//  SearchLocationResultView.swift
//  QuickLocation
//

import UIKit

class SearchLocationResultView: UIView {

    let headerView = SearchLocationHeaderView()

    var onSelectGroup: ((String) -> Void)?

    private var chipButtons: [UIButton] = []
    private var selectedGroupKey: String = ""
    private var chipHeightConstraint: NSLayoutConstraint?
    private var chipTopConstraint: NSLayoutConstraint?

    private func setupUI() {
        addSubview(navBgView)
        addSubview(navView)
        addSubview(scrollView)
        addSubview(actionBtn)
        actionBtn.layoutChain
            .edgesHorzontal(20)
            .height(56)
            .bottom(kSafeBottomMargin + 12)
        
        navBgView.layoutChain
            .edges(excludingEdge: .bottom)
            .heightToWidth(160 / 375)

        navView.layoutChain
            .edges(excludingEdge: .bottom)
            .height(kNaviHeight)

        scrollView.layoutChain
            .topToBottomOfView(navView)
            .edges(excludingEdge: .top)
    }

    func configureResult(status: String, disclaimer: String, showWarning: Bool, showGroups: Bool) {
        statusPillLab.text = status
        disclaimerLab.text = disclaimer
        disclaimerLab.textAlignment = showWarning ? .left : .center
        disclaimerIcon.isHidden = !showWarning
        disclaimerRow.alignment = showWarning ? .top : .center
        chipScrollView.isHidden = !showGroups
        chipTopConstraint?.constant = showGroups ? 16 : 0
        chipHeightConstraint?.constant = showGroups ? 32 : 0
    }

    func reloadGroups(_ groups: [GroupInfoModel], selectedKey: String) {
        selectedGroupKey = selectedKey
        chipButtons.forEach { $0.removeFromSuperview() }
        chipButtons.removeAll()
        chipStack.arrangedSubviews.forEach { $0.removeFromSuperview() }

        for group in groups {
            let btn = makeChip(title: group.name, groupKey: group.group_key)
            applyChipStyle(btn, selected: group.group_key == selectedKey)
            chipStack.addArrangedSubview(btn)
            chipButtons.append(btn)
        }
    }

    var currentGroupKey: String { selectedGroupKey }

    func updateSubViews() {
        normalResultContentView.isHidden = false
    }

    lazy var navBgView: UIImageView = {
        let iv = UIImageView()
        iv.image = UIImage(named: "Common/navBar_bg_2")
        iv.contentMode = .scaleAspectFill
        iv.isHidden = true
        return iv
    }()

    lazy var navView: BaseNavigationView = {
        BaseNavigationView(title: " ")
    }()

    lazy var scrollView: UIScrollView = {
        let view = UIScrollView()
        view.backgroundColor = .clear
        view.showsVerticalScrollIndicator = false
        view.bounces = false

        let contentView = UIView()
        contentView.backgroundColor = .clear
        view.addSubview(contentView)
        contentView.layoutChain.edges().widthToView(view)

        contentView.addSubview(headerView)
        headerView.layoutChain.top(12).edgesHorzontal()

        contentView.addSubview(resultCard)
        resultCard.layoutChain
            .topToBottomOfView(headerView, offset: 34)
            .edgesHorzontal(20)

        contentView.addSubview(areaBadgeView)
        areaBadgeView.layoutChain
            .topToView(resultCard, offset: -15)
            .centerX(contentView, offset: 70)
            .width(74)
            .height(30)
            .bottom()

        return view
    }()

    lazy var resultCard: UIView = {
        let card = UIView()
        card.backgroundColor = UIColor(hexStr: "#EFFAFF")
        card.cornerRadius = 28

        card.addSubview(normalResultContentView)
        normalResultContentView.layoutChain
            .top(22)
            .edgesHorzontal()
            .bottom()

        return card
    }()

    private lazy var areaBadgeView: UIImageView = {
        let iv = UIImageView(image: UIImage(named: "SearchLocation/area_badge"))
        iv.contentMode = .scaleAspectFit
        return iv
    }()

    private lazy var normalResultContentView: UIView = {
        let contentView = UIView()
        let locationRow = UIView()
        contentView.addSubview(locationRow)

        let pinIcon = UIImageView(image: UIImage(named: "Home/member_location"))
        pinIcon.contentMode = .scaleAspectFit
        locationRow.addSubview(pinIcon)
        locationRow.addSubview(phoneAreaLab)

        pinIcon.layoutChain.left().centerY().width(18).height(18)
        phoneAreaLab.layoutChain
            .leftToRightOfView(pinIcon, offset: 6)
            .right()
            .top()
            .bottom()
        locationRow.layoutChain.top().centerX()

        let pillContainer = UIView()
        pillContainer.backgroundColor = .white
        pillContainer.cornerRadius = 16
        contentView.addSubview(pillContainer)
        pillContainer.addSubview(statusPillLab)
        statusPillLab.layoutChain.edgesHorzontal(12).edgesVertical(14)
        pillContainer.layoutChain
            .topToBottomOfView(locationRow, offset: 14)
            .edgesHorzontal(16)
            .height(48)

        contentView.addSubview(disclaimerRow)
        disclaimerRow.layoutChain
            .topToBottomOfView(pillContainer, offset: 12)
            .edgesHorzontal(20)

        contentView.addSubview(chipScrollView)
        chipScrollView.translatesAutoresizingMaskIntoConstraints = false
        chipTopConstraint = chipScrollView.topAnchor.constraint(equalTo: disclaimerRow.bottomAnchor, constant: 16)
        chipHeightConstraint = chipScrollView.heightAnchor.constraint(equalToConstant: 32)
        NSLayoutConstraint.activate([
            chipTopConstraint!,
            chipHeightConstraint!,
            chipScrollView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 16),
            chipScrollView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -16),
            chipScrollView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -20)
        ])

        return contentView
    }()

    lazy var phoneAreaLab: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 18, weight: .bold)
        label.textColor = UIColor(hexStr: "#293445")
        return label
    }()

    lazy var statusPillLab: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 16, weight: .medium)
        label.textColor = UIColor(hexStr: "#16B3FF")
        label.textAlignment = .center
        return label
    }()

    private lazy var disclaimerIcon: UIImageView = {
        let iv = UIImageView(image: UIImage(named: "SearchLocation/warning"))
        iv.contentMode = .scaleAspectFit
        iv.layoutChain.width(12).height(12)
        return iv
    }()

    lazy var disclaimerLab: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12, weight: .regular)
        label.textColor = UIColor(hexStr: "#999999")
        label.numberOfLines = 0
        return label
    }()

    private lazy var disclaimerRow: UIStackView = {
        let stack = UIStackView(arrangedSubviews: [disclaimerIcon, disclaimerLab])
        stack.axis = .horizontal
        stack.alignment = .top
        stack.spacing = 4
        return stack
    }()

    lazy var actionBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitleColor(.white, for: .normal)
        btn.titleLabel?.font = FontManager.boboBold(18)
        btn.setBackgroundImage(UIImage(named: "Common/button_bg_2"), for: .normal)
        btn.cornerRadius = 20
        btn.isHidden = true
        return btn
    }()

    var inviteBtn: UIButton { actionBtn }

    private lazy var chipScrollView: UIScrollView = {
        let view = UIScrollView()
        view.showsHorizontalScrollIndicator = false
        view.alwaysBounceHorizontal = true
        view.addSubview(chipStack)
        chipStack.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            chipStack.topAnchor.constraint(equalTo: view.contentLayoutGuide.topAnchor),
            chipStack.leadingAnchor.constraint(equalTo: view.contentLayoutGuide.leadingAnchor),
            chipStack.bottomAnchor.constraint(equalTo: view.contentLayoutGuide.bottomAnchor),
            chipStack.trailingAnchor.constraint(equalTo: view.contentLayoutGuide.trailingAnchor),
            chipStack.heightAnchor.constraint(equalTo: view.frameLayoutGuide.heightAnchor)
        ])
        return view
    }()

    private lazy var chipStack: UIStackView = {
        let stack = UIStackView()
        stack.axis = .horizontal
        stack.spacing = 8
        stack.alignment = .fill
        return stack
    }()

    private func makeChip(title: String, groupKey: String) -> UIButton {
        let btn = UIButton(type: .custom)
        btn.setTitle(title, for: .normal)
        btn.titleLabel?.font = .systemFont(ofSize: 13, weight: .medium)
        btn.contentEdgeInsets = UIEdgeInsets(top: 6, left: 12, bottom: 6, right: 12)
        btn.layer.cornerRadius = 8
        btn.layer.borderWidth = 1
        btn.accessibilityIdentifier = groupKey
        btn.addTarget(self, action: #selector(tapChip(_:)), for: .touchUpInside)
        btn.setContentHuggingPriority(.required, for: .horizontal)
        btn.setContentCompressionResistancePriority(.required, for: .horizontal)
        return btn
    }

    private func applyChipStyle(_ btn: UIButton, selected: Bool) {
        if selected {
            btn.setTitleColor(UIColor(hexStr: "#16B3FF"), for: .normal)
            btn.backgroundColor = .white
            btn.layer.borderColor = UIColor(hexStr: "#16B3FF").cgColor
        } else {
            btn.setTitleColor(UIColor(hexStr: "#C0C4CC"), for: .normal)
            btn.backgroundColor = UIColor(hexStr: "#F2F3F5")
            btn.layer.borderColor = UIColor.clear.cgColor
        }
    }

    @objc private func tapChip(_ sender: UIButton) {
        let key = sender.accessibilityIdentifier ?? ""
        selectedGroupKey = key
        for btn in chipButtons {
            applyChipStyle(btn, selected: btn === sender)
        }
        onSelectGroup?(key)
    }

    override init(frame: CGRect) {
        super.init(frame: .zero)
        backgroundColor = .white
        setupUI()
    }

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