//
//  SearchLocationView.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/27.
//

import UIKit
import RxSwift
import RxCocoa
import AVFoundation
import Lottie

class SearchLocationView: UIView {

    var disposeBag = DisposeBag()
    let onVideoComplete = PublishSubject<Void>()
    private var player: AVPlayer?
    private var timeObserver: Any?

    private func setupRx() {
        backBtn.rx.tap.subscribe(onNext: { _ in
            AppRouter.shared.popOrDismiss()
        }).disposed(by: disposeBag)
        
        phoneInputTF.rx.text
            .map { text -> String? in
                guard let text = text else { return nil }
                return String(text.prefix(11))
            }.bind(to: phoneInputTF.rx.text)
            .disposed(by: disposeBag)
        
        phoneInputTF.rx.text.orEmpty.map { phone -> Bool in
            if phone.count == 11 {
                return true
            } else {
                return false
            }
        }
        .bind(to: searchBtn.rx.isEnabled)
        .disposed(by: disposeBag)
        
        phoneInputTF.rx.controlEvent(.editingDidEndOnExit)
            .subscribe(onNext: { [weak self] in
                guard let self = self else { return }
                self.phoneInputTF.resignFirstResponder()
            })
            .disposed(by: disposeBag)
    }

    private func setupUI() {
        addSubview(navBgView)
        addSubview(navBarView)
        navBarView.addSubview(navTitleLabel)
        navBarView.addSubview(backBtn)
        addSubview(scrollView)
        addSubview(videoView)
        addSubview(searchProgressView)
        
        videoView.layoutChain.edges()

        searchProgressView.layoutChain
            .edgesHorzontal(15)
            .bottom(kSafeBottomMargin + 20)
            .height(221)
        
        navBgView.layoutChain
            .edges(excludingEdge: .bottom)
            .heightToWidth(160/375)

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

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

        backBtn.layoutChain
            .centerY(navTitleLabel)
            .left(15)
            .width(24)
            .height(24)
        
        scrollView.layoutChain
            .topToBottomOfView(navBarView)
            .edges(excludingEdge: .top)
    }

    // MARK: - Marquee
    private func randomPhoneNumber() -> String {
        // 所有合法前3位号段
        let prefixes = [
            "134","135","136","137","138","139","147","150","151","152","157","158","159","178","182","183","184","187","188","198",
            "130","131","132","145","155","156","166","175","176","185","186","196",
            "133","149","153","173","177","180","181","189","191","199"
        ]
        // 随机选一个号段
        let prefix = prefixes.randomElement()!
        
        // 随机生成后面8位数字
        var suffix = ""
        for _ in 0..<8 {
            suffix.append("\(Int.random(in: 0...9))")
        }
        
        return prefix + suffix
    }
    
    private func setupMarquee() {
        let surnames = ["张", "李", "王", "陈", "刘", "杨", "赵", "黄", "周", "吴",
                        "林", "何", "马", "胡", "郑", "梁", "谢", "宋", "唐", "韩"]

        let container = UIView()
        container.backgroundColor = .clear
        marqueeScrollView.addSubview(container)

        var prevView: UIView?
        for _ in 0..<10 {
            let iconIndex = Int.random(in: 1...15)
            let surname = surnames.randomElement() ?? "张"
            let maskedName = "\(surname)**"
            let phone = randomPhoneNumber()
            let maskedPhone = phone.prefix(3) + "******" + phone.suffix(2)

            let itemView = UIView()
            itemView.backgroundColor = UIColor(hexStr: "#EFF9FF")
            itemView.cornerRadius = 6
            container.addSubview(itemView)

            let avatar = UIImageView(image: UIImage(named: "UserIcon/\(iconIndex)"))
            avatar.contentMode = .scaleAspectFill
            avatar.cornerRadius = 12
            avatar.clipsToBounds = true
            itemView.addSubview(avatar)

            let label = UILabel()
            label.font = .systemFont(ofSize: 13, weight: .medium)
            let fullText = "\(maskedName) 定位到了 \(maskedPhone)"
            let attr = NSMutableAttributedString(string: fullText)
            attr.addAttribute(.foregroundColor, value: UIColor(hexStr: "#16B3FF"),
                              range: NSRange(fullText.range(of: maskedName)!, in: fullText))
            if let phoneRange = fullText.range(of: maskedPhone) {
                attr.addAttribute(.foregroundColor, value: UIColor(hexStr: "#16B3FF"),
                                  range: NSRange(phoneRange, in: fullText))
            }
            label.attributedText = attr
            itemView.addSubview(label)

            avatar.layoutChain
                .left(10).centerY()
                .width(24).height(24)

            label.layoutChain
                .leftToRightOfView(avatar, offset: 6)
                .centerY().right(10)

            itemView.layoutChain
                .centerY()
                .height(30)

            if let prev = prevView {
                itemView.layoutChain.leftToRightOfView(prev, offset: 20)
            } else {
                itemView.layoutChain.left()
            }
            prevView = itemView
        }

        if let last = prevView {
            container.layoutChain
                .edges().heightToView(marqueeScrollView)
                .rightToView(last)
        }
    }

    func startMarqueeAnimation() {
        marqueeScrollView.layer.removeAllAnimations()
        marqueeScrollView.contentOffset.x = 0
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in
            guard let self = self else { return }
            let contentW = self.marqueeScrollView.contentSize.width
            guard contentW > self.marqueeScrollView.bounds.width else { return }
            let duration = contentW / 100

            UIView.animate(withDuration: duration, delay: 0, options: [.curveLinear, .repeat]) {
                self.marqueeScrollView.contentOffset.x = contentW - self.marqueeScrollView.bounds.width
            }
        }
    }

    override func willMove(toWindow newWindow: UIWindow?) {
        super.willMove(toWindow: newWindow)
        if newWindow != nil {
            startMarqueeAnimation()
        }
    }

    // MARK: - Views

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

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

    lazy var navTitleLabel: UILabel = {
        let label = UILabel()
        label.text = "找人助手"
        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: 100, right: 100)
        return btn
    }()
    
    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)
        
        let bgImgView = UIImageView()
        bgImgView.image = UIImage(named: "SearchLocation/bg_1")
        contentView.addSubview(bgImgView)
        bgImgView.layoutChain
            .top(15)
            .edgesHorzontal(56.5)
            .heightToWidth(626/524)
        
        contentView.addSubview(titleLab)
        titleLab.layoutChain
            .topToBottomOfView(bgImgView, offset: 0)
            .centerX()
        
        contentView.addSubview(marqueeScrollView)
        marqueeScrollView.layoutChain
            .topToBottomOfView(titleLab, offset: 10)
            .edgesHorzontal()
            .height(30)
        
        contentView.addSubview(searchInputView)
        searchInputView.layoutChain
            .topToBottomOfView(marqueeScrollView, offset: 20)
            .edgesHorzontal(15)
            .bottom(kSafeBottomMargin + 30)
        
        return view
    }()

    lazy var videoView: UIView = {
        let v = UIView()
        v.backgroundColor = .black
        v.isHidden = true
        
        return v
    }()

    func playVideo(completion: (() -> Void)? = nil) {
        guard let path = Bundle.main.path(forResource: "search_interlude", ofType: "mp4") ?? Bundle.main.path(forResource: "search_interlude", ofType: "mp4", inDirectory: "video") else {
            print("[video] file not found in bundle: \(Bundle.main.resourcePath ?? "")")
            return
        }
        videoView.isHidden = false
        videoView.layoutIfNeeded()

        let player = AVPlayer(url: URL(fileURLWithPath: path))
        self.player = player
        let playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = videoView.bounds.isEmpty ? UIScreen.main.bounds : videoView.bounds
        playerLayer.videoGravity = .resizeAspectFill
        videoView.layer.addSublayer(playerLayer)

        // 进度跟踪
        timeObserver = player.addPeriodicTimeObserver(forInterval: CMTime(seconds: 0.1, preferredTimescale: 600), queue: .main) { [weak self] time in
            guard let self = self, let duration = self.player?.currentItem?.duration.seconds, duration > 0 else { return }
            self.updateVideoProgress(Float(time.seconds / duration))
        }

        NotificationCenter.default.rx.notification(.AVPlayerItemDidPlayToEndTime, object: player.currentItem)
            .take(1)
            .subscribe(onNext: { _ in
                self.updateVideoProgress(1)
                completion?()
                self.onVideoComplete.onNext(())
            }).disposed(by: disposeBag)

        player.play()

        DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { [weak self] in
            guard let self = self else { return }
            playerLayer.frame = self.videoView.bounds
        }
    }

    override func layoutSubviews() {
        super.layoutSubviews()
        if let playerLayer = videoView.layer.sublayers?.compactMap({ $0 as? AVPlayerLayer }).first {
            playerLayer.frame = videoView.bounds
        }
    }

    lazy var titleLab: UILabel = {
        let label = UILabel()
        label.text = "有 \(Int.random(in: 1000...10000)) 人正在使用此功能"
        label.font = .systemFont(ofSize: 16, weight: .medium)
        label.textColor = ThemeManager.shared.color.titleAuxColor
        label.textAlignment = .center
        return label
    }()

    lazy var marqueeScrollView: UIScrollView = {
        let sv = UIScrollView()
        sv.backgroundColor = .clear
        sv.showsHorizontalScrollIndicator = false
        sv.isScrollEnabled = false
        return sv
    }()

    lazy var searchInputView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EFF9FF")
        view.cornerRadius = 10

        let titleLab = UILabel()
        titleLab.text = "TA在哪？输入号码就知道"
        titleLab.font = .systemFont(ofSize: 16, weight: .semibold)
        titleLab.textColor = ThemeManager.shared.color.titleAuxColor
        view.addSubview(titleLab)
        titleLab.layoutChain
            .top(18)
            .left(15)

        let inputView = UIView()
        inputView.backgroundColor = .white
        inputView.cornerRadius = 4
        view.addSubview(inputView)
        inputView.layoutChain
            .topToBottomOfView(titleLab, offset: 20)
            .edgesHorzontal(15)
            .height(40)

        let contactsBtn = UIButton()
        contactsBtn.setTitle(" 通讯录导入", for: .normal)
        contactsBtn.setTitleColor(UIColor(hexStr: "#16B3FF"), for: .normal)
        contactsBtn.titleLabel?.font = .systemFont(ofSize: 12, weight: .regular)
        contactsBtn.setImage(UIImage(named: "SearchLocation/contacts"), for: .normal)
        contactsBtn.extendEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 15)
        contactsBtn.rx.tap.subscribe(onNext: { _ in
            //TODO: - 通讯录
        }).disposed(by: disposeBag)
        inputView.addSubview(contactsBtn)
        contactsBtn.layoutChain
            .right(15)
            .width(90)
            .edgesVertical()
        contactsBtn.sizeToFit()

        inputView.addSubview(phoneInputTF)
        phoneInputTF.layoutChain
            .edgesVertical(10)
            .left(15)
            .rightToLeftOfView(contactsBtn, offset: -8)

        let tipsLab = UILabel()
        tipsLab.text = "我们不会存储和泄露你导入的通讯录隐私"
        tipsLab.font = .systemFont(ofSize: 12, weight: .regular)
        tipsLab.textColor = ThemeManager.shared.color.contentColor
        view.addSubview(tipsLab)
        tipsLab.layoutChain
            .topToBottomOfView(inputView, offset: 6)
            .right(15)

        view.addSubview(searchBtn)
        searchBtn.layoutChain
            .topToBottomOfView(tipsLab, offset: 35)
            .edgesHorzontal(52)
            .height(50)
            .bottom(30)

        return view
    }()

    lazy var phoneInputTF: UITextField = {
        let textField = UITextField()
        textField.font = .systemFont(ofSize: 14, weight: .medium)
        textField.placeholder = "请输入要查找的号码"
        textField.keyboardType = .numberPad
        textField.returnKeyType = .done
        return textField
    }()

    lazy var searchBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("开始查找", 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
    }()
    
    lazy var searchProgressView: UIView = {
        let view = UIView()
        view.backgroundColor = .black.withAlphaComponent(0.8)
        view.cornerRadius = 16
        view.borderWidth = 0.5
        view.borderColor = .white
        view.isHidden = true
        
        view.addSubview(searchPhoneLottieView)
        searchPhoneLottieView.layoutChain
            .top(30)
            .left(15)
            .width(120)
            .heightToWidth(1)
        
        let steps = ["分析用户号码", "正在找 CGI 蜂窝参数", "SS7 信息交流", "号码已获授权", "处理完成"]
        var prevStepView: UIView?
        for (i, text) in steps.enumerated() {
            let stepView = UIView()
            view.addSubview(stepView)

            let icon = UIImageView(image: UIImage(named: "SearchLocation/done_off"))
            icon.contentMode = .scaleAspectFit
            stepView.addSubview(icon)
            progressIcons.append(icon)

            let label = UILabel()
            label.text = text
            label.font = .systemFont(ofSize: 16, weight: .medium)
            label.textColor = .white
            stepView.addSubview(label)

            icon.layoutChain
                .left().centerY()
                .width(18).height(18)

            label.layoutChain
                .leftToRightOfView(icon, offset: 8)
                .centerY().right()

            stepView.layoutChain
                .leftToRightOfView(searchPhoneLottieView, offset: 10)
                .right(10)
                .height(26)

            if let prev = prevStepView {
                stepView.layoutChain.topToBottomOfView(prev, offset: 4)
            } else {
                stepView.layoutChain.top(20)
            }
            prevStepView = stepView
        }

        // 进度条 + 百分比
        progressBar.layer.cornerRadius = 4
        progressBar.clipsToBounds = true
        progressBar.trackTintColor = .white.withAlphaComponent(0.2)
        progressBar.progressTintColor = UIColor(hexStr: "#16B3FF")
        view.addSubview(progressBar)

        progressLab.textColor = .white
        progressLab.font = .systemFont(ofSize: 12, weight: .medium)
        progressLab.textAlignment = .right
        view.addSubview(progressLab)

        progressBar.layoutChain
            .topToBottomOfView(prevStepView!, offset: 15)
            .left(20)
            .height(8)

        progressLab.layoutChain
            .leftToRightOfView(progressBar, offset: 8)
            .centerY(progressBar)
            .right(20)

        return view
    }()

    private var progressIcons: [UIImageView] = []

    private lazy var progressBar: UIProgressView = {
        let p = UIProgressView()
        return p
    }()

    private lazy var progressLab: UILabel = {
        let l = UILabel()
        return l
    }()

    /// 根据视频进度更新步骤图标和进度条 (0~1)
    func updateVideoProgress(_ progress: Float) {
        let clamped = max(0, min(1, progress))
        progressBar.progress = clamped
        progressLab.text = "\(Int(clamped * 100))%"

        let stepCount = progressIcons.count
        let stepProgress = 1.0 / Float(stepCount)
        for (i, icon) in progressIcons.enumerated() {
            let stepStart = stepProgress * Float(i)
            icon.image = UIImage(named: clamped >= stepStart + stepProgress * 0.5 ? "SearchLocation/done" : "SearchLocation/done_off")
        }
    }

    lazy var searchPhoneLottieView: LottieAnimationView = {
        let view = LottieAnimationView(name: "phone_search_interlude")
        view.loopMode = .loop
        return view
    }()

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

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