//
//  InviteJoinView.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/1.
//

import UIKit
import RxSwift
import RxCocoa

class InviteJoinView: UIView {

    var disposeBag = DisposeBag()

    func configure(model: GroupInfoModel) {
        groupIcon.image = model.groupIcon
        groupNameLab.text = model.name
        groupDescLab.text = model.description
        groupDescLab.isHidden = model.description.isEmpty

        tagStack.arrangedSubviews.forEach {
            tagStack.removeArrangedSubview($0)
            $0.removeFromSuperview()
        }
        let labels = Array(model.labels.prefix(2))
        tagStack.isHidden = labels.isEmpty
        for text in labels {
            tagStack.addArrangedSubview(Self.makeTagLabel(text))
        }
    }

    private static func makeTagLabel(_ text: String) -> UILabel {
        let label = InviteTagLabel()
        label.text = text
        label.textColor = UIColor(hexStr: "#D5923F")
        label.font = .systemFont(ofSize: 10, weight: .medium)
        label.backgroundColor = UIColor(hexStr: "#FFF9DD")
        label.cornerRadius = 4
        label.clipsToBounds = true
        label.textAlignment = .center
        return label
    }

    private func setupRx() {
        inviteCodeView.rx.tapGesture.subscribe { [weak self] _ in
            guard let code = self?.inviteCodeLab.text, !code.isEmpty else { return }
            UIPasteboard.general.string = code
            DLToast.showSuccess(text: "已复制")
        }.disposed(by: disposeBag)
    }

    private func setupUI() {
        addSubview(navView)
        addSubview(inviteCardView)
        inviteCardView.addSubview(cardBgImg)
        inviteCardView.addSubview(groupView)
        inviteCardView.addSubview(inviteInfoTitleLab)
        inviteCardView.addSubview(inviteCodeView)
        inviteCodeView.addSubview(inviteCodeTipsLab)
        inviteCodeView.addSubview(inviteCodeLab)
        inviteCardView.addSubview(inviteTipsLab)
        inviteCardView.addSubview(scanTipsLab)
        inviteCardView.addSubview(qrCodeView)
        qrCodeView.addSubview(qrCodeImgView)
        addSubview(shareBtn)
        addSubview(downloadBtn)

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

        shareBtn.layoutChain
            .left(30)
            .bottom(kSafeBottomMargin + 12)
            .height(56)
            .width(110)

        downloadBtn.layoutChain
            .leftToRightOfView(shareBtn, offset: 16)
            .right(30)
            .bottomToView(shareBtn)
            .heightToView(shareBtn)

        inviteCardView.layoutChain
            .topToBottomOfView(navView, offset: 42)
            .edgesHorzontal(15)
            .heightToWidth(481/345)

        cardBgImg.layoutChain.edges()

        groupView.layoutChain
            .top(16)
            .edgesHorzontal(16)
        
        inviteInfoTitleLab.layoutChain
            .topToBottomOfView(groupIcon, offset: 28)
            .centerX()

        inviteCodeView.layoutChain
            .topToBottomOfView(inviteInfoTitleLab, offset: 12)
            .centerX()
            .width(200)
            .height(56)

        inviteCodeTipsLab.layoutChain
            .top(8)
            .centerX()

        inviteCodeLab.layoutChain
            .topToBottomOfView(inviteCodeTipsLab, offset: 7)
            .centerX()

        inviteTipsLab.layoutChain
            .topToBottomOfView(inviteCodeView, offset: 10)
            .centerX()

        qrCodeView.layoutChain
            .bottom(42)
            .centerX()
            .width(138)
            .height(138)

        qrCodeImgView.layoutChain
            .edges(all: 18)
        
        scanTipsLab.layoutChain
            .bottomToTopOfView(qrCodeView, offset: -8)
            .centerX()
    }

    lazy var navView: BaseNavigationView = {
        let nav = BaseNavigationView(title: "邀请成员")
        nav.backBtn.setImage(UIImage(named: "Group/invite_back"), for: .normal)
        nav.backBtn.layoutChain.width(36).height(36)
        return nav
    }()

    /// 整卡（截图 / 分享用）
    lazy var inviteCardView: UIView = {
        let view = UIView()
        view.backgroundColor = .clear
        return view
    }()

    lazy var cardBgImg: UIImageView = {
        let view = UIImageView()
        view.image = UIImage(named: "Group/invite_card_bg")
        view.contentMode = .scaleAspectFit
        return view
    }()

    lazy var groupView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EEF7FB")
        view.cornerRadius = 18
        
        view.addSubview(groupIcon)
        groupIcon.layoutChain
            .left(12)
            .edgesVertical(9)
            .width(52)
            .heightToWidth(1)
        
        view.addSubview(groupNameLab)
        groupNameLab.layoutChain
            .topToView(groupIcon, offset: 2)
            .leftToRightOfView(groupIcon, offset: 10)

        view.addSubview(tagStack)
        tagStack.layoutChain
            .leftToRightOfView(groupNameLab, offset: 6)
            .centerY(groupNameLab)
            .right(12, relation: .greaterThanOrEqual)

        view.addSubview(groupDescLab)
        groupDescLab.layoutChain
            .topToBottomOfView(groupNameLab, offset: 14)
            .leftToView(groupNameLab)
            .right(24)
        
        return view
    }()
    
    lazy var groupIcon: UIImageView = {
        let view = UIImageView()
        view.contentMode = .scaleAspectFill
        view.cornerRadius = 10
        view.clipsToBounds = true
        return view
    }()

    lazy var groupNameLab: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 16, weight: .bold)
        label.textColor = UIColor(hexStr: "#293445")
        label.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
        return label
    }()

    lazy var tagStack: UIStackView = {
        let view = UIStackView()
        view.axis = .horizontal
        view.alignment = .center
        view.spacing = 4
        view.setContentCompressionResistancePriority(.required, for: .horizontal)
        return view
    }()

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

    lazy var inviteInfoTitleLab: UILabel = {
        let label = UILabel()
        label.text = "将此邀请码分享给加入圈子的人"
        label.font = .systemFont(ofSize: 14, weight: .medium)
        label.textColor = UIColor(hexStr: "#353B4F")
        return label
    }()

    lazy var inviteTipsLab: UILabel = {
        let label = UILabel()
        label.text = "此邀请码有效期为24小时"
        label.font = .systemFont(ofSize: 12, weight: .regular)
        label.textColor = UIColor(hexStr: "#00ADFE")
        return label
    }()

    lazy var inviteCodeView: UIView = {
        let view = UIView()
        view.borderColor = UIColor(hexStr: "#CCCCCC")
        view.borderWidth = 1
        view.cornerRadius = 10
        view.backgroundColor = .white
        return view
    }()

    lazy var inviteCodeTipsLab: UILabel = {
        let label = UILabel()
        label.text = "点击复制邀请码"
        label.font = .systemFont(ofSize: 11, weight: .medium)
        label.textColor = UIColor(hexStr: "#999999")
        return label
    }()

    lazy var inviteCodeLab: UILabel = {
        let label = UILabel()
        label.font = .systemFont(ofSize: 16, weight: .bold)
        label.textColor = UIColor(hexStr: "#00ADFE")
        return label
    }()

    lazy var scanTipsLab: UILabel = {
        let label = UILabel()
        label.text = "扫描以下二维码"
        label.font = .systemFont(ofSize: 12, weight: .regular)
        label.textColor = ThemeManager.shared.color.contentColor
        return label
    }()

    lazy var qrCodeView: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.borderWidth = 3
        view.borderColor = UIColor(hexStr: "#EAEEEF")
        view.cornerRadius = 34
        return view
    }()

    lazy var qrCodeImgView: UIImageView = {
        let view = UIImageView()
        view.backgroundColor = .white
        view.contentMode = .scaleAspectFit
        view.cornerRadius = 8
        view.clipsToBounds = true
        return view
    }()

    lazy var shareBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("分享", for: .normal)
        btn.titleLabel?.font = FontManager.boboBold(18)
        btn.setTitleColor(UIColor(hexStr: "#00ADFE"), for: .normal)
        btn.backgroundColor = .white
        btn.borderWidth = 1
        btn.borderColor = UIColor(hexStr: "#00ADFE")
        btn.cornerRadius = 20
        return btn
    }()

    lazy var downloadBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("下载图片", for: .normal)
        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.clipsToBounds = true
        return btn
    }()

    /// 兼容旧引用：截图目标
    var inviteInfoView: UIView { inviteCardView }

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

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

    override func layoutSubviews() {
        super.layoutSubviews()
        setGradientLayer(
            frame: bounds,
            startPoint: CGPoint(x: 0.5, y: 0),
            endPoint: CGPoint(x: 0.5, y: 1),
            colors: [UIColor(hexStr: "#A1E8FF"), UIColor(hexStr: "#E4F8FF")],
            locations: [0, 1]
        )
    }
}

private class InviteTagLabel: UILabel {
    private let inset = UIEdgeInsets(top: 2, left: 6, bottom: 2, right: 6)

    override func drawText(in rect: CGRect) {
        super.drawText(in: rect.inset(by: inset))
    }

    override var intrinsicContentSize: CGSize {
        let size = super.intrinsicContentSize
        return CGSize(width: size.width + inset.left + inset.right,
                      height: size.height + inset.top + inset.bottom)
    }
}