//
//  LockDistractPermissionPopView.swift
//  QuickLocation
//

import UIKit
import RxSwift
import RxCocoa

final class LockDistractPermissionPopView: UIView {

    private static let shared = LockDistractPermissionPopView(frame: CGRect(origin: .zero, size: kScreenSize))

    private var disposeBag = DisposeBag()

    static func show() {
        guard let superView = kKeyWindow else { return }
        let pop = LockDistractPermissionPopView.shared
        if pop.superview != nil {
            pop.removeFromSuperview()
        }
        pop.frame = superView.bounds
        pop.alpha = 0
        superView.addSubview(pop)
        superView.bringSubviewToFront(pop)
        pop.layoutIfNeeded()
        UIView.animate(withDuration: 0.25) {
            pop.alpha = 1
        }
    }

    static func dismiss() {
        guard shared.superview != nil else { return }
        UIView.animate(withDuration: 0.2, delay: 0, options: [.curveEaseIn]) {
            shared.alpha = 0
        } completion: { _ in
            shared.removeFromSuperview()
        }
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
        bind()
    }

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

    private func bind() {
        knowBtn.rx.tap
            .subscribe(onNext: { _ in
                LockDistractPermissionPopView.dismiss()
            })
            .disposed(by: disposeBag)

        let tap = UITapGestureRecognizer(target: self, action: #selector(tapMask))
        tap.delegate = self
        addGestureRecognizer(tap)
    }

    @objc private func tapMask() {
        LockDistractPermissionPopView.dismiss()
    }

    private func setupUI() {
        addSubview(dimView)
        addSubview(card)
        addSubview(birdView)
        card.addSubview(gradientView)
        card.addSubview(titleLab)
        card.addSubview(row1)
        card.addSubview(row2)
        card.addSubview(pathLab)
        card.addSubview(knowBtn)

        dimView.layoutChain.edges()

        card.layoutChain
            .centerY()
            .edgesHorzontal(38)

        birdView.layoutChain
            .bottomToTopOfView(card, offset: 28)
            .centerX()
            .width(120)
            .height(88)

        gradientView.layoutChain
            .top()
            .edgesHorzontal()
            .height(72)

        titleLab.layoutChain
            .top(36)
            .centerX()

        row1.layoutChain
            .topToBottomOfView(titleLab, offset: 20)
            .left(22)
            .right(22)

        row2.layoutChain
            .topToBottomOfView(row1, offset: 14)
            .left(22)
            .right(22)

        pathLab.layoutChain
            .topToBottomOfView(row2, offset: 8)
            .left(40)
            .right(22)

        knowBtn.layoutChain
            .topToBottomOfView(pathLab, offset: 22)
            .edgesHorzontal(20)
            .height(48)
            .bottom(20)
    }

    private lazy var dimView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor.black.withAlphaComponent(0.55)
        return view
    }()

    private lazy var card: UIView = {
        let view = UIView()
        view.backgroundColor = .white
        view.layer.cornerRadius = 28
        view.clipsToBounds = true
        return view
    }()

    private lazy var gradientView: UIView = {
        GradientHostView()
    }()

    private lazy var birdView: UIImageView = {
        let iv = UIImageView(image: UIImage(named: "LockDistract/horn_bird"))
        iv.contentMode = .scaleAspectFit
        return iv
    }()

    private lazy var titleLab: UILabel = {
        let lab = UILabel()
        lab.text = "锁定权限说明"
        lab.font = FontManager.boboBold(20)
        lab.textColor = UIColor(hexStr: "#293445")
        return lab
    }()

    private lazy var row1: UIView = {
        makeBulletRow("需要Ta开启App配对权限，不然无法锁定")
    }()

    private lazy var row2: UIView = {
        makeBulletRow("权限开启位置")
    }()

    private lazy var pathLab: UILabel = {
        let lab = UILabel()
        lab.text = "【我的】 – 【权限检测】 – 【配对设置】"
        lab.font = .systemFont(ofSize: 13, weight: .medium)
        lab.textColor = UIColor(hexStr: "#8A94A6")
        lab.numberOfLines = 0
        return lab
    }()

    private lazy var knowBtn: UIButton = {
        let btn = UIButton(type: .custom)
        btn.setTitle("我知道了", 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 = 16
        return btn
    }()

    private func makeBulletRow(_ text: String) -> UIView {
        let row = UIView()
        let star = UIImageView(image: UIImage(named: "LockDistract/section_star"))
        star.contentMode = .scaleAspectFit
        let lab = UILabel()
        lab.text = text
        lab.font = .systemFont(ofSize: 14, weight: .medium)
        lab.textColor = UIColor(hexStr: "#293445")
        lab.numberOfLines = 0
        row.addSubview(star)
        row.addSubview(lab)
        star.layoutChain.left().top(2).width(12).height(12)
        lab.layoutChain.leftToRightOfView(star, offset: 6).right().top().bottom()
        return row
    }
}

private final class GradientHostView: UIView {
    override class var layerClass: AnyClass { CAGradientLayer.self }

    override init(frame: CGRect) {
        super.init(frame: frame)
        guard let layer = layer as? CAGradientLayer else { return }
        layer.colors = [
            UIColor(hexStr: "#E7FFF2").cgColor,
            UIColor.white.cgColor
        ]
        layer.startPoint = CGPoint(x: 0.5, y: 0)
        layer.endPoint = CGPoint(x: 0.5, y: 1)
    }

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

extension LockDistractPermissionPopView: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        !card.frame.contains(touch.location(in: self))
    }
}