//
//  SearchLocationView.swift
//  QuickLocation
//

import UIKit
import RxSwift
import RxCocoa
import AVFoundation
import Lottie
import Contacts
import ContactsUI
import URLNavigator

class SearchLocationView: UIView {

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

    let headerView = SearchLocationHeaderView()

    private func setupRx() {
        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 { $0.count == 11 }
            .bind(to: searchBtn.rx.isEnabled)
            .disposed(by: disposeBag)

        phoneInputTF.rx.controlEvent(.editingDidEndOnExit)
            .subscribe(onNext: { [weak self] in
                self?.phoneInputTF.resignFirstResponder()
            })
            .disposed(by: disposeBag)
    }

    private func setupUI() {
        addSubview(navBgView)
        addSubview(navView)
        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)

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

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

    func startMarqueeAnimation() {
        headerView.startMarqueeAnimation()
    }

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

    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()
            .widthToView(contentView)

        contentView.addSubview(searchInputView)
        searchInputView.layoutChain
            .topToBottomOfView(headerView, 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)

        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 searchInputView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EFFAFF")
        view.cornerRadius = 40

        let inputView = UIView()
        inputView.backgroundColor = .white
        inputView.cornerRadius = 14
        view.addSubview(inputView)
        inputView.layoutChain
            .top(20)
            .edgesHorzontal(15)
            .height(44)

        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.rx.tap.subscribe(onNext: { [weak self] in
            guard let self = self else { return }
            self.phoneInputTF.resignFirstResponder()
            let status = CNContactStore.authorizationStatus(for: .contacts)
            switch status {
            case .notDetermined:
                CNContactStore().requestAccess(for: .contacts) { granted, _ in
                    DispatchQueue.main.async { if granted { self.presentContactPicker() } }
                }
            case .authorized:
                self.presentContactPicker()
            case .denied, .restricted:
                DLToast.show(text: "请在设置中开启通讯录权限")
            default:
                break
            }
        }).disposed(by: disposeBag)
        inputView.addSubview(contactsBtn)
        contactsBtn.layoutChain.edgesVertical().width(60).right(12)

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

        let warningIcon = UIImageView(image: UIImage(named: "SearchLocation/warning"))
        warningIcon.contentMode = .scaleAspectFit
        view.addSubview(warningIcon)
        warningIcon.layoutChain
            .topToBottomOfView(inputView, offset: 10)
            .left(15)
            .width(14)
            .height(14)

        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 = UIColor(hexStr: "#999999")
        view.addSubview(tipsLab)
        tipsLab.layoutChain
            .leftToRightOfView(warningIcon, offset: 4)
            .centerY(warningIcon)
            .right(15)

        view.addSubview(searchBtn)
        searchBtn.layoutChain
            .topToBottomOfView(warningIcon, offset: 24)
            .edgesHorzontal(20)
            .height(50)
            .bottom(24)

        return view
    }()

    lazy var phoneInputTF: UITextField = {
        let textField = UITextField()
        textField.font = .systemFont(ofSize: 14, weight: .medium)
        textField.placeholder = "输入要查看的号码"
        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 = FontManager.boboBold(16)
        btn.setBackgroundImage(UIImage(named: "Common/button_bg_2"), for: .normal)
        btn.cornerRadius = 20
        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 text in steps {
            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
        }

        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 = {
        UIProgressView()
    }()

    private lazy var progressLab: UILabel = {
        UILabel()
    }()

    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()
    }

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

    private func presentContactPicker() {
        let picker = CNContactPickerViewController()
        picker.delegate = self
        picker.displayedPropertyKeys = [CNContactPhoneNumbersKey]
        UIViewController.topMost?.present(picker, animated: true)
    }
}

extension SearchLocationView: CNContactPickerDelegate {
    func contactPicker(_ picker: CNContactPickerViewController, didSelect contact: CNContact) {
        if let phone = contact.phoneNumbers.first?.value.stringValue {
            phoneInputTF.text = phone.filter { $0.isNumber }
            phoneInputTF.sendActions(for: .editingChanged)
        }
    }
}