//
//  DLAlert.swift
//  Alamofire
//
//  Created by osell on 2023/8/17.
//

import UIKit


public class DLAlert {
    
    /// 显示Alert， subTitle是使用文本
    /// - Parameters:
    ///   - config: 配置信息
    ///   - title: 标题
    ///   - subTitle: 子标题
    ///   - moreTitle: 更多按钮标题
    ///   - moreAction: 更多按钮点击回调
    ///   - defulatTitle: 默认按钮标题
    ///   - defulatAction: 默认按钮点击回调
    public static func show(config: DLAlertConfig = DLAlertConfig(),
                            title: String?=nil,
                            subTitle: String?=nil,
                            content: String?=nil,
                            moreTitle: String?=nil,
                            moreAction: (() -> Void)?=nil,
                            defaultTitle: String,
                            defaultAction: (() -> Void)?=nil) {
        guard let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first else { return }
        if title?.isEmpty != false && subTitle?.isEmpty != false { return }
        let view = DLAlertView(title: title, subtitle: subTitle, content:content, moreBtnTitle: moreTitle, defaultBtnTitle: defaultTitle, config: config)
        view.defaultAction = defaultAction
        view.moreAction = moreAction
        view.show(on: window)
    }
    
    /// 显示Alert, subTitle是使用富文本
    /// - Parameters:
    ///   - config: 配置信息
    ///   - title: 标题
    ///   - subTitle: 子标题，富文本
    ///   - moreTitle: 更多按钮标题
    ///   - moreAction: 更多按钮点击回调
    ///   - defulatTitle: 默认按钮标题
    ///   - defulatAction: 默认按钮点击回调
    public static func showAttributeText(config: DLAlertConfig = DLAlertConfig(),
                                         title: String?=nil,
                                         subtitle: NSAttributedString?=nil,
                                         moreTitle: String?=nil,
                                         moreAction: (() -> Void)?=nil,
                                         defaultTitle: String,
                                         defaultAction: (() -> Void)?=nil) {
        guard let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first else { return }
        let view = DLAlertView(title: title, subtitleAttribute: subtitle, moreBtnTitle: moreTitle, defaultBtnTitle: defaultTitle, config: config)
        view.defaultAction = defaultAction
        view.moreAction = moreAction
        view.show(on: window)
    }
}

public class DLAlertConfig {
    /// cover背景颜色
    public var coverBgColor: UIColor = .black.withAlphaComponent(0.5)
    /// 内容背景颜色
    public var contentBgColor: UIColor = .white
    /// 标题颜色
    public var titleColor: UIColor = ThemeManager.shared.color.titleColor
    /// 子标题颜色
    public var subtitleColor: UIColor = ThemeManager.shared.color.titleColor
    /// 内容颜色
    public var contentColor: UIColor = ThemeManager.shared.color.contentColor
    /// 标题字体大小
    public var titleFont: UIFont = .systemFont(ofSize: 18, weight: .medium)
    /// 子标题字体大小
    public var subtitleFont: UIFont = .systemFont(ofSize: 15, weight: .regular)
    /// 内容
    public var contentFont: UIFont = .systemFont(ofSize: 12, weight: .regular)
    public var moreBtnColor: UIColor = ThemeManager.shared.color.contentColor
    public var defaultBtnColor: UIColor = .white
    public var moreBtnBgColor: UIColor = .white
    public var defaultBtnBgColor: UIColor = ThemeManager.shared.color.mainColor
    public var moreBtnFont: UIFont = .systemFont(ofSize: 18, weight: .regular)
    public var defaultBtnFont: UIFont = .systemFont(ofSize: 18, weight: .medium)
    
    public init() {}
}

class DLAlertView: UIView {
            
    var defaultAction: (() -> Void)?
    var moreAction: (() -> Void)?
    
    lazy var contentView: UIView = {
        let view = UIView()
        view.backgroundColor = config.contentBgColor
        view.setCornerRadius(8)
        return view
    }()
    
    ///
    lazy var titleLabel: UILabel = {
        let label = UILabel()
        label.font = config.titleFont
        label.textColor = config.titleColor
        label.text = title
        label.numberOfLines = 0
        label.textAlignment = .center
        return label
    }()
    
    lazy var subtitleLabel: UILabel = {
        let label = UILabel()
        label.font = config.subtitleFont
        label.textColor = config.subtitleColor
        label.attributedText = subtitleAttribute ?? NSAttributedString(string: subtitle)
        label.numberOfLines = 0
        label.textAlignment = .center
        return label
    }()
    
    lazy var contentLabel: UILabel = {
        let label = UILabel()
        label.font = config.contentFont
        label.textColor = config.contentColor
        label.text = content
//        label.attributedText = subtitleAttribute ?? NSAttributedString(string: subtitle)
        label.numberOfLines = 0
        label.textAlignment = .center
        return label
    }()
    
    ///
    lazy var moreBtn: UIButton = {
        let btn = UIButton()
        btn.titleLabel?.font = config.moreBtnFont
        btn.setTitle(moreBtnTitle, for: .normal)
        btn.setTitleColor(config.moreBtnColor, for: .normal)
        btn.setBackgroundColor(config.moreBtnBgColor, for: .normal)
        btn.borderColor = ThemeManager.shared.color.contentColor
        btn.borderWidth = 0.5
        btn.addTapGestrue { [weak self] _ in
            self?.dismiss()
            self?.moreAction?()
        }
        btn.cornerRadius = 18
        return btn
    }()
    
    lazy var defaultBtn: UIButton = {
        let btn = UIButton()
        btn.titleLabel?.font = config.defaultBtnFont
        btn.setTitle(defaultBtnTitle, for: .normal)
        btn.setTitleColor(config.defaultBtnColor, for: .normal)
        btn.setBackgroundColor(config.defaultBtnBgColor, for: .normal)
        btn.addTapGestrue { [weak self] _ in
            self?.dismiss()
            self?.defaultAction?()
        }
        btn.cornerRadius = 18
        return btn
    }()
    
    /// line
    lazy var hLineView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EEEEEE", alpha: 1.0)
        return view
    }()
    
    /// line
    lazy var vLineView: UIView = {
        let view = UIView()
        view.backgroundColor = UIColor(hexStr: "#EEEEEE", alpha: 1.0)
        return view
    }()
    
    /// btnView
    lazy var bottonView: UIStackView = {
        let view = UIStackView(arrangedSubviews: [moreBtn, defaultBtn])
        view.axis = .horizontal
        view.spacing = 16
        view.distribution = .fillEqually
        view.alignment = .center
        return view
    }()
    
    var config: DLAlertConfig
    var title: String = ""
    var subtitle: String = ""
    var subtitleAttribute: NSAttributedString?
    var content: String = ""
    var contentAttribute: NSAttributedString?
    var moreBtnTitle: String = ""
    var defaultBtnTitle: String = ""
    fileprivate weak var viewForPresent: UIView?
    
    init(title: String?=nil,
         subtitle: String?=nil,
         content: String?=nil,
         moreBtnTitle: String?=nil,
         defaultBtnTitle: String,
         config: DLAlertConfig = DLAlertConfig()) {
        self.config = config
        self.title = title ?? ""
        self.subtitle = subtitle ?? ""
        self.content = content ?? ""
        self.moreBtnTitle = moreBtnTitle ?? ""
        self.defaultBtnTitle = defaultBtnTitle
        super.init(frame: .zero)
        setupSubViews()
    }
    
    init(title: String?=nil,
         subtitleAttribute: NSAttributedString?=nil,
         contentAttribute: NSAttributedString?=nil,
         moreBtnTitle: String?=nil,
         defaultBtnTitle: String,
         config: DLAlertConfig = DLAlertConfig()) {
        self.config = config
        self.title = title ?? ""
        self.subtitleAttribute = subtitleAttribute
        self.contentAttribute = contentAttribute
        self.moreBtnTitle = moreBtnTitle ?? ""
        self.defaultBtnTitle = defaultBtnTitle
        super.init(frame: .zero)
        setupSubViews()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func setupSubViews() {
        addSubview(contentView)
        contentView.layoutChain
            .centerX()
            .centerY(self, offset: -kScreenWidth * 0.1)
            .left(48, relation: .greaterThanOrEqual)
            .right(48, relation: .greaterThanOrEqual)
            .top(kNaviHeight, relation: .greaterThanOrEqual)
            .bottom(kNaviHeight, relation: .greaterThanOrEqual)
            .width(280, relation: .greaterThanOrEqual)
        
        var preView: UIView?
        if !title.isEmpty {
            // 标题
            contentView.addSubview(titleLabel)
            titleLabel.layoutChain
                .top(18)
                .edgesHorzontal(20)
            preView = titleLabel
        }
        
        if !subtitle.isEmpty || subtitleAttribute != nil {
            // 子标题
            contentView.addSubview(subtitleLabel)
            subtitleLabel.layoutChain
                .edgesHorzontal(20)
    
            if let preView = preView {
                subtitleLabel.layoutChain
                    .topToBottomOfView(preView, offset: 10)
            } else {
                subtitleLabel.layoutChain
                    .top(20)
            }
            preView = subtitleLabel
        }
        
        if !content.isEmpty {
            contentView.addSubview(contentLabel)
            contentLabel.layoutChain
                .edgesHorzontal(20)
    
            if let preView = preView {
                contentLabel.layoutChain
                    .topToBottomOfView(preView, offset: 10)
            } else {
                contentLabel.layoutChain
                    .top(20)
            }
            preView = contentLabel
        }
        
        // 底部按钮
        moreBtn.isHidden = moreBtnTitle.isEmpty
        contentView.addSubview(bottonView)
        bottonView.layoutChain
            .edgesHorzontal(12)
            .height(50)
            .bottom(5)

        if let preView = preView {
            bottonView.layoutChain
                .topToBottomOfView(preView, offset: 20)
        } else {
            bottonView.layoutChain
                .top(20)
        }
        
        defaultBtn.layoutChain
            .height(36)
        
        moreBtn.layoutChain
            .height(36)
        
//        contentView.addSubview(hLineView)
//        hLineView.layoutChain
//            .edgesHorzontal()
//            .bottomToTopOfView(bottonView)
//            .height(0.5)
//        
//        if !moreBtnTitle.isEmpty {
//            contentView.addSubview(vLineView)
//            vLineView.layoutChain
//                .centerX()
//                .topToView(bottonView)
//                .bottomToView(bottonView)
//                .width(0.5)
//        }
        
    }
    
}

extension DLAlertView {
    
    func show(on view: UIView) {
        viewForPresent = view
        guard let viewForPresent = viewForPresent else { return }
        self.backgroundColor = .clear
        viewForPresent.addSubview(self)
        self.layoutChain
            .edges()
        alpha = 0
        sizeToFit()
        contentView.center = .init(x: viewForPresent.frame.midX, y: viewForPresent.frame.midY)
        contentView.transform = transform.scaledBy(x: 0.8, y: 0.8)
        UIView.animate(withDuration: 0.25) {
            self.alpha = 1
            self.contentView.transform = CGAffineTransform.identity
            self.backgroundColor = self.config.coverBgColor
        } completion: { _ in
        }
    }
    
    func dismiss() {
        UIView.animate(withDuration: 0.25) {
            self.alpha = 0
            self.contentView.transform = self.contentView.transform.scaledBy(x: 0.2, y: 0.2)
        } completion: { _ in
            self.removeFromSuperview()
        }
    }
}