//
//  PromotionalActivitiesView.swift
//  QuickLocation
//
//  Created by 八条 on 2026/7/3.
//

import UIKit
import RxSwift
import RxCocoa

enum PromotionalActivitiesItem {
    case recommend(model: VipExpenseModel)
    case normal(model: VipExpenseModel)
}

class PromotionalActivitiesView: UIView {

    var disposeBag = DisposeBag()

    private func setupRx() {
        backBtn.rx.tap.subscribe(onNext: { _ in
            VipWaivePopView.show()
        }).disposed(by: disposeBag)
    }

    private func setupUI() {
        addSubview(scrollView)

        addSubview(navBarView)
        navBarView.addSubview(navTitleLabel)
        addSubview(backBtn)

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

        navTitleLabel.layoutChain
            .top(kStatusBarHeight + 12)
            .centerY(backBtn)
            .centerX()

        backBtn.layoutChain
            .top(kStatusBarHeight + 12)
            .left(15)
            .width(24)
            .height(24)

        addSubview(bottomView)
        bottomView.layoutChain
            .edges(excludingEdge: .top)
            .height(120)

        scrollView.layoutChain
            .edges(excludingEdge: .bottom)
            .bottomToTopOfView(bottomView)
    }

    lazy var navBarView: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.alpha = 0
        return view
    }()

    lazy var navTitleLabel: UILabel = {
        let label = UILabel()
        label.text = "超值优惠"
        label.font = .systemFont(ofSize: 18, weight: .medium)
        label.textColor = ThemeManager.shared.color.titleAuxColor
        label.textAlignment = .center
        return label
    }()

    lazy var backBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setImage(UIImage(named: "Common/back"), for: .normal)
        btn.extendEdgeInsets = UIEdgeInsets(top: 54, left: 15, bottom: 15, right: 100)
        return btn
    }()

    lazy var scrollView: UIScrollView = {
        let view = UIScrollView()
        view.backgroundColor = UIColor(hexStr: "#F6F9FB")
        view.showsVerticalScrollIndicator = false
        view.delegate = self
        view.bounces = false
        view.contentInsetAdjustmentBehavior = .never

        view.addSubview(scrollContentView)
        scrollContentView.layoutChain
            .edges().widthToView(view)

        let headerBgImgView = UIImageView(image: UIImage(named: "PromotionalActivities/header_bg"))
        headerBgImgView.contentMode = .scaleAspectFill

        scrollContentView.addSubview(headerBgImgView)
        headerBgImgView.layoutChain
            .edges(excludingEdge: .bottom)
            .heightToWidth(285/375)

        let infoView = UIView()
        infoView.backgroundColor = UIColor(hexStr: "#F6F9FB")
        infoView.layer.cornerRadius = 30

        scrollContentView.addSubview(infoView)
        infoView.layoutChain
            .topToBottomOfView(headerBgImgView, offset: -65)
            .edges(excludingEdge: .top)

        let iconView = UIImageView(image: UIImage(named: "PromotionalActivities/vip_icon"))
        infoView.addSubview(iconView)
        iconView.layoutChain
            .top(20)
            .left(15)
            .width(20)
            .heightToWidth(1)

        let titleLab = UILabel()
        titleLab.text = "即刻加入会员"
        titleLab.font = .systemFont(ofSize: 16, weight: .semibold)
        titleLab.textColor = UIColor(hexStr: "#333333")
        infoView.addSubview(titleLab)
        titleLab.layoutChain
            .leftToRightOfView(iconView, offset: 4)
            .centerY(iconView)

        scrollContentView.addSubview(tableView)
        tableView.layoutChain
            .topToBottomOfView(titleLab, offset: 0)
            .edgesHorzontal()

        let agreementView = UIView()
        infoView.addSubview(agreementView)
        agreementView.layoutChain
            .topToBottomOfView(tableView, offset: 15)
            .left(15)
            .right(15)
            .height(16)

        agreementView.addSubview(agreementCheckBtn)
        agreementCheckBtn.layoutChain
            .left(0)
            .centerY()
            .width(16)
            .height(16)

        agreementView.addSubview(agreementTextView)
        agreementTextView.layoutChain
            .leftToRightOfView(agreementCheckBtn, offset: 3)
            .right(0)
            .centerY()
            .bottom(0)

        let benefitsImgView = UIImageView(image: UIImage(named: "PromotionalActivities/benefits"))
        benefitsImgView.contentMode = .scaleAspectFill
        infoView.addSubview(benefitsImgView)
        benefitsImgView.layoutChain
            .topToBottomOfView(agreementView, offset: 20)
            .edgesHorzontal(15)
            .bottom(15, relation: .greaterThanOrEqual)
            .heightToWidth(148/375)

        return view
    }()

    lazy var scrollContentView: UIView = {
        let view = UIView()
        view.backgroundColor = .clear
        return view
    }()

    lazy var tableView: UITableView = {
        let tableView = UITableView(frame: .zero, style: .plain)
        tableView.backgroundColor = .clear
        tableView.separatorStyle = .none
        tableView.estimatedRowHeight = 106
        tableView.isScrollEnabled = false
        tableView.showsVerticalScrollIndicator = false
        tableView.register(PromotionalNormalCell.self)
        tableView.register(PromotionalRecommendCell.self)
        return tableView
    }()

    lazy var bottomView: UIView = {
        let view = UIView()
        view.backgroundColor = .white

        view.addSubview(countdownContainer)
        countdownContainer.layoutChain
            .top(11)
            .centerX()

        view.addSubview(confirmBtn)
        confirmBtn.layoutChain
            .edgesHorzontal(30)
            .bottom(35)
            .height(50)

        return view
    }()

    lazy var agreementCheckBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setImage(UIImage(named: "Common/checkbox"), for: .normal)
        btn.setImage(UIImage(named: "Common/checkbox_on"), for: .selected)
        btn.rx.tap.subscribe(onNext: { [weak btn] in
            btn?.isSelected.toggle()
        }).disposed(by: disposeBag)
        btn.isSelected = true
        return btn
    }()

    lazy var agreementTextView: UITextView = {
        let tv = UITextView()
        tv.isEditable = false
        tv.isScrollEnabled = false
        tv.backgroundColor = .clear
        tv.textContainerInset = .zero
        tv.textContainer.lineFragmentPadding = 0
        tv.delegate = self
        let text = "购买前请先阅读隐私政策和服务条款"
        let attr = NSMutableAttributedString(string: text, attributes: [
            .font: UIFont.systemFont(ofSize: 12),
            .foregroundColor: UIColor(hexStr: "#999999")
        ])
        let privacyRange = (text as NSString).range(of: "隐私政策")
        let termsRange = (text as NSString).range(of: "服务条款")
        let linkColor = UIColor(hexStr: "#16B3FF")
        attr.addAttributes([.foregroundColor: linkColor, .link: URLManager.shared.privacyPolicyUrl], range: privacyRange)
        attr.addAttributes([.foregroundColor: linkColor, .link: URLManager.shared.userAgreementUrl], range: termsRange)
        tv.attributedText = attr
        tv.linkTextAttributes = [.foregroundColor: linkColor]
        return tv
    }()

    lazy var countdownContainer: UIStackView = {
        let stack = UIStackView(arrangedSubviews: [countdownPrefixLabel, countdownMinLabel, countdownColonLabel, countdownSecLabel, countdownSuffixLabel])
        stack.axis = .horizontal
        stack.alignment = .center
        stack.spacing = 0
        return stack
    }()

    lazy var countdownPrefixLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12)
        label.textColor = UIColor(hexStr: "#FD501B")
        label.text = "优惠活动倒计时 "
        return label
    }()

    lazy var countdownMinLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12)
        label.textColor = .white
        label.backgroundColor = UIColor(hexStr: "#FD501B")
        label.layer.cornerRadius = 2
        label.clipsToBounds = true
        label.textAlignment = .center
        label.text = "15"
        return label
    }()

    lazy var countdownColonLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12)
        label.textColor = UIColor(hexStr: "#FD501B")
        label.text = ":"
        return label
    }()

    lazy var countdownSecLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12)
        label.textColor = .white
        label.backgroundColor = UIColor(hexStr: "#FD501B")
        label.layer.cornerRadius = 2
        label.clipsToBounds = true
        label.textAlignment = .center
        label.text = "00"
        return label
    }()

    lazy var countdownSuffixLabel: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 12)
        label.textColor = UIColor(hexStr: "#FD501B")
        label.text = " 限时特惠"
        return label
    }()

    lazy var confirmBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("立即开通", for: .normal)
        btn.setTitleColor(.white, for: .normal)
        btn.titleLabel?.font = .systemFont(ofSize: 16, weight: .medium)
        btn.setBackgroundImage(UIImage(named: "Common/button_bg_2"), for: .normal)
        btn.cornerRadius = 25
        return btn
    }()

    private var countdownRemaining: Int = 15 * 60
    private var countdownTimer: Timer?

    func startCountdown() {
        countdownRemaining = 15 * 60
        updateCountdown()
        countdownTimer?.invalidate()
        countdownTimer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { [weak self] _ in
            self?.updateCountdown()
        }
    }

    private func stopCountdown() {
        countdownTimer?.invalidate()
        countdownTimer = nil
    }

    private func updateCountdown() {
        if countdownRemaining > 0 {
            countdownRemaining -= 1
        }
        else {
            AppRouter.shared.popOrDismiss()
            return
        }
        let min = countdownRemaining / 60
        let sec = countdownRemaining % 60
        countdownMinLabel.text = String(format: "%02d", min)
        countdownSecLabel.text = String(format: "%02d", sec)
    }

    override func layoutSubviews() {
        super.layoutSubviews()
    }

    override func willMove(toSuperview newSuperview: UIView?) {
        super.willMove(toSuperview: newSuperview)
        if newSuperview == nil {
            stopCountdown()
        }
    }

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

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

// MARK: - UIScrollViewDelegate
extension PromotionalActivitiesView: UIScrollViewDelegate {
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        let maxY = scrollView.contentOffset.y
        let alpha = maxY / kNaviHeight
        navBarView.alpha = alpha < 0.0 ? 0.0 : alpha
    }
}

// MARK: - UITextViewDelegate
extension PromotionalActivitiesView: UITextViewDelegate {
    func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
        AppRouter.push(Route.web, userInfo: ["url": URL.absoluteString])
        return false
    }
}

// MARK: - PromotionalNormalCell
class PromotionalNormalCell: UITableViewCell {

    func configure(model: VipExpenseModel, isSelected: Bool) {
        priceLab.text = model.price
        originPriceLab.text = "原价" + model.origin_price
        originPriceLab.setupStrikethroughStyle()
        goodsNameLab.text = model.goods_name
        tipsLab.text = model.tips2
        bgView.image = UIImage(named: isSelected ? "PromotionalActivities/normal_on_bg" : "PromotionalActivities/normal_bg")
        priceLab.textColor = isSelected ? UIColor(hexStr: "#FF383C") : ThemeManager.shared.color.titleAuxColor
        unitLab.textColor = isSelected ? UIColor(hexStr: "#FF383C") : ThemeManager.shared.color.titleAuxColor
    }

    override init(style: CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        setupSubviews()
    }

    private func setupSubviews() {
        contentView.addSubview(bgView)
        bgView.addSubview(unitLab)
        bgView.addSubview(priceLab)
        bgView.addSubview(originPriceLab)
        bgView.addSubview(goodsNameLab)
        bgView.addSubview(tipsLab)

        bgView.layoutChain
            .top(22)
            .edgesHorzontal(15)
            .bottom()

        priceLab.layoutChain
            .leftToRightOfView(unitLab, offset: 0)
            .centerY()

        unitLab.layoutChain
            .left(32)
            .centerY(bgView, offset: 9)

        originPriceLab.layoutChain
            .topToBottomOfView(priceLab, offset: -5)
            .centerX(priceLab)

        goodsNameLab.layoutChain
            .leftToRightOfView(priceLab, offset: 27)
            .bottomToCenterYOfView(bgView)

        tipsLab.layoutChain
            .leftToView(goodsNameLab)
            .topToCenterYOfView(bgView, offset: 3)
    }

    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: UIImageView = {
        let view = UIImageView()
        view.backgroundColor = .clear
        view.contentMode = .scaleAspectFill

        return view
    }()

    lazy var priceLab: UILabel = {
        let label = UILabel()
        label.textColor = UIColor(hexStr: "#FF383C")
        label.font = .systemFont(ofSize: 40, weight: .bold)
        return label
    }()

    lazy var unitLab: UILabel = {
        let label = UILabel()
        label.text = "￥"
        label.textColor = UIColor(hexStr: "#FF383C")
        label.font = .systemFont(ofSize: 12, weight: .regular)
        return label
    }()

    lazy var originPriceLab: UILabel = {
        let label = UILabel()
        label.textColor = UIColor(hexStr: "#999999")
        label.font = .systemFont(ofSize: 10, weight: .regular)
        return label
    }()

    lazy var goodsNameLab: UILabel = {
        let label = UILabel()
        label.textColor = ThemeManager.shared.color.titleAuxColor
        label.font = .systemFont(ofSize: 18, weight: .semibold)
        return label
    }()

    lazy var tipsLab: UILabel = {
        let label = UILabel()
        label.textColor = ThemeManager.shared.color.contentColor
        label.font = .systemFont(ofSize: 14, weight: .regular)
        return label
    }()
}

// MARK: - PromotionalRecommendCell
class PromotionalRecommendCell: UITableViewCell {

    func configure(model: VipExpenseModel, isSelected: Bool) {
        tipsTitleLab.text = model.tips
        priceLab.text = model.price
        originPriceLab.text = "原价" + model.origin_price
        originPriceLab.setupStrikethroughStyle()
        goodsNameLab.text = model.goods_name
        tipsLab.text = model.tips2
        bgView.image = UIImage(named: isSelected ? "PromotionalActivities/recommend_on_bg" : "PromotionalActivities/recommend_bg")
        priceLab.textColor = isSelected ? UIColor(hexStr: "#FF383C") : ThemeManager.shared.color.titleAuxColor
        unitLab.textColor = isSelected ? UIColor(hexStr: "#FF383C") : ThemeManager.shared.color.titleAuxColor
    }

    override init(style: CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .none
        backgroundColor = .clear
        setupSubviews()
    }

    private func setupSubviews() {
        contentView.addSubview(bgView)
        bgView.addSubview(unitLab)
        bgView.addSubview(priceLab)
        bgView.addSubview(originPriceLab)
        bgView.addSubview(goodsNameLab)
        bgView.addSubview(tipsLab)
        bgView.addSubview(recommendLab)
        bgView.addSubview(recommendIcon)
        bgView.addSubview(tipsTitleView)
        tipsTitleView.addSubview(tipsTitleLab)

        bgView.layoutChain
            .top(22)
            .edgesHorzontal(15)
            .bottom()

        tipsTitleView.layoutChain
            .topToView(bgView, offset: -8)
            .leftToView(bgView, offset: -6)
            .width(94)
            .height(35)

        tipsTitleLab.layoutChain
            .centerX()
            .top(5)

        priceLab.layoutChain
            .leftToRightOfView(unitLab, offset: 0)
            .centerY()

        unitLab.layoutChain
            .left(32)
            .centerY(bgView, offset: 9)

        originPriceLab.layoutChain
            .topToBottomOfView(priceLab, offset: -5)
            .centerX(priceLab)

        goodsNameLab.layoutChain
            .leftToRightOfView(priceLab, offset: 27)
            .bottomToCenterYOfView(bgView, offset: -5)

        tipsLab.layoutChain
            .leftToView(goodsNameLab)
            .topToCenterYOfView(bgView, offset: 8)

        recommendLab.layoutChain
            .top(8)
            .right(24)

        recommendIcon.layoutChain
            .rightToLeftOfView(recommendLab, offset: -3)
            .centerY(recommendLab)
            .width(13)
            .height(11)
    }

    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: UIImageView = {
        let view = UIImageView()
        view.backgroundColor = .clear
        view.contentMode = .scaleAspectFill

        return view
    }()

    lazy var priceLab: UILabel = {
        let label = UILabel()
        label.textColor = UIColor(hexStr: "#FF383C")
        label.font = .systemFont(ofSize: 40, weight: .bold)
        return label
    }()

    lazy var unitLab: UILabel = {
        let label = UILabel()
        label.text = "￥"
        label.textColor = UIColor(hexStr: "#FF383C")
        label.font = .systemFont(ofSize: 12, weight: .regular)
        return label
    }()

    lazy var originPriceLab: UILabel = {
        let label = UILabel()
        label.textColor = UIColor(hexStr: "#999999")
        label.font = .systemFont(ofSize: 10, weight: .regular)
        return label
    }()

    lazy var goodsNameLab: UILabel = {
        let label = UILabel()
        label.textColor = ThemeManager.shared.color.titleAuxColor
        label.font = .systemFont(ofSize: 18, weight: .semibold)
        return label
    }()

    lazy var tipsTitleView: UIImageView = {
        let view = UIImageView()
        view.backgroundColor = .clear
        view.image = UIImage(named: "PromotionalActivities/tips_bg")
        return view
    }()

    lazy var tipsTitleLab: UILabel = {
        let label = UILabel()
        label.textColor = .white
        label.font = .systemFont(ofSize: 12, weight: .semibold)
        return label
    }()

    lazy var tipsLab: UILabel = {
        let label = UILabel()
        label.textColor = ThemeManager.shared.color.contentColor
        label.font = .systemFont(ofSize: 14, weight: .regular)
        return label
    }()

    lazy var recommendIcon: UIImageView = {
        let view = UIImageView()
        view.contentMode = .scaleAspectFill
        view.image = UIImage(named: "PromotionalActivities/recommend_icon")
        return view
    }()

    lazy var recommendLab: UILabel = {
        let label = UILabel()
        label.text = "80%的用户选择"
        label.textColor = .white
        label.font = .systemFont(ofSize: 12, weight: .medium)
        return label
    }()
}