//
//  ProgressHUD.swift
// JiuLaiBao
//
//  Created by 霹雳火 on 2018/8/15.
//  Copyright © 2018 GuoXiaoMei. All rights reserved.
//

import UIKit
import MBProgressHUD

public class ProgressHUD: NSObject {
    
    public enum HUDType {
        case loading(status: String?)
        case progress(progress: Float, status: String?)
        case info(status: String?)
        case success(status: String?)
        case error(status: String?)
        case dismiss
        case dismissImmediate
        case dismissDelay(delay: TimeInterval)
        case dismissDelayAndCompletion(delay: TimeInterval, completion: ProgressHUD.ProgressHUDDismissCompletion?)
        case dismissCompletion(completion: ProgressHUD.ProgressHUDDismissCompletion?)
    }
    
    public typealias ProgressHUDDismissCompletion = (() -> Void)
    
    static public var successImage = UIImage(named: "ProgressHUD/success")!
    static public var errorImage = UIImage(named: "ProgressHUD/error")!
    static public var infoImage = UIImage(named: "ProgressHUD/info")!
    static public let ProgressHUDUndefinedProgress: Float = -1
    static public var minimumDismissTimeInterval: TimeInterval = 1
    static public var maximumDismissTimeInterval: TimeInterval = 3
    
    static public func createProgressHUD(for view: UIView) -> MBProgressHUD {
        let hud = MBProgressHUD.showAdded(to: view, animated: true)
        hud.contentColor = .white
        hud.animationType = .fade
        hud.removeFromSuperViewOnHide = true
        hud.isUserInteractionEnabled = true
        
        hud.bezelView.color = UIColor.black.withAlphaComponent(0.53)
        hud.bezelView.style = .solidColor
        
        hud.label.numberOfLines = 0
        hud.detailsLabel.font = UIFont.boldSystemFont(ofSize: 16)
        return hud
    }
    
    static public func findProgressHUD(for view: UIView) -> MBProgressHUD? {
        let hud = MBProgressHUD(view: view)
        hud.isUserInteractionEnabled = true
        return hud
    }
    
    static public func frontWindow() -> UIWindow {
        let mainWindow = UIApplication.shared.delegate?.window
        return mainWindow!!
    }
    
    // MARK: show/hide method
    @discardableResult static public func show(withStatus status: String? = nil,
                                        addedTo view: UIView? = nil) -> MBProgressHUD {
        return showProgress(progress: ProgressHUDUndefinedProgress, status: status, addedTo: view)
    }
    
    @discardableResult static public func showProgress(progress: Float,
                                                status: String? = nil,
                                                addedTo view: UIView? = nil,
                                                offset: CGPoint = .zero) -> MBProgressHUD {
        let hudView: MBProgressHUD
        let forView = view ?? frontWindow()
        if let findHUD = findProgressHUD(for: forView) {
            hudView = findHUD
        } else {
            hudView = createProgressHUD(for: forView)
        }
        
        if progress == ProgressHUDUndefinedProgress {
            hudView.mode = .indeterminate
        } else {
            hudView.mode = .annularDeterminate
            hudView.progress = progress
        }
        hudView.detailsLabel.text = status
        hudView.isUserInteractionEnabled = true
        hudView.offset = offset
        forView.bringSubviewToFront(hudView)
        return hudView
    }
    
    @discardableResult static public func show(_ image: UIImage,
                                        status: String? = nil,
                                        addedTo view: UIView? = nil,
                                        offset: CGPoint = .zero) -> MBProgressHUD {
        let displayInterval = displayDuration(for: status)
        let hudView: MBProgressHUD
        let forView = view ?? frontWindow()
        if let findHUD = findProgressHUD(for: forView) {
            hudView = findHUD
        } else {
            hudView = createProgressHUD(for: forView)
        }
        hudView.mode = .customView
        hudView.customView = UIImageView(image: image)
        hudView.detailsLabel.text = status
        hudView.offset = offset
        hudView.isUserInteractionEnabled = false
        forView.bringSubviewToFront(hudView)
        hudView.hide(animated: true, afterDelay: displayInterval)
        return hudView
    }
    
    // MARK: show/hide method
    @discardableResult static public func show(withStatus status: String? = nil,
                                        inController controller: UIViewController?) -> MBProgressHUD {
        return showProgress(progress: ProgressHUDUndefinedProgress, status: status, inController: controller)
    }
    
    @discardableResult static public func showProgress(progress: Float,
                                                status: String? = nil,
                                                inController controller: UIViewController?) -> MBProgressHUD {
        if let controller = controller {
            if controller.fd_prefersNavigationBarHidden {
                return showProgress(progress: progress, status: status, addedTo: controller.view)
            } else {
                let navigatorHeight = UIApplication.shared.statusBarFrame.size.height + 44.0
                let offset = CGPoint(x: 0, y: -navigatorHeight / 2.0)
                return showProgress(progress: progress, status: status, addedTo: controller.view, offset: offset)
            }
        } else {
            return showProgress(progress: progress, status: status, addedTo: nil)
        }
    }
    
    @discardableResult static public func showInfo(withStatus status: String? = nil,
                                            addedTo view: UIView? = nil) -> MBProgressHUD {
        return show(infoImage, status: status, addedTo: view)
    }
    
    @discardableResult static public func showSuccess(withStatus status: String? = nil,
                                               addedTo view: UIView? = nil) -> MBProgressHUD {
        return show(successImage, status: status, addedTo: view)
    }
    
    @discardableResult static public func showError(withStatus status: String? = nil,
                                             addedTo view: UIView? = nil) -> MBProgressHUD {
        return show(errorImage, status: status, addedTo: view)
    }
    
    @discardableResult static public func showInfo(withStatus status: String? = nil,
                                            inController controller: UIViewController?) -> MBProgressHUD {
        return show(infoImage, status: status, inController: controller)
    }
    
    @discardableResult static public func showSuccess(withStatus status: String? = nil,
                                               inController controller: UIViewController?) -> MBProgressHUD {
        return show(successImage, status: status, inController: controller)
    }
    
    @discardableResult static public func showError(withStatus status: String? = nil,
                                             inController controller: UIViewController?) -> MBProgressHUD {
        return show(errorImage, status: status, inController: controller)
    }
    
    @discardableResult static public func show(_ image: UIImage,
                                        status: String? = nil,
                                        inController controller: UIViewController?) -> MBProgressHUD {
        if let controller = controller {
            if controller.fd_prefersNavigationBarHidden {
                return show(image, status: status, addedTo: controller.view)
            } else {
                let navigatorHeight = UIApplication.shared.statusBarFrame.size.height + 44.0
                let offset = CGPoint(x: 0, y: -navigatorHeight / 2.0)
                return show(image, status: status, addedTo: controller.view, offset: offset)
            }
        } else {
            return show(image, status: status, addedTo: controller?.view)
        }
    }
    
    static public func dismiss(withDelay delay: TimeInterval = 0,
                        immediate: Bool = false,
                        forView view: UIView? = nil,
                        completion: ProgressHUDDismissCompletion? = nil) {
        let forView = view ?? frontWindow()
        let hudView = findProgressHUD(for: forView)
        hudView?.completionBlock = completion
        if immediate {
            hudView?.hide(animated: false)
        } else {
            hudView?.hide(animated: true, afterDelay: delay)
        }
    }
    
    static public func dismiss(withDelay delay: TimeInterval = 0,
                        immediate: Bool = false,
                        forController controller: UIViewController?,
                        completion: ProgressHUDDismissCompletion? = nil) {
        let forView = controller?.view ?? frontWindow()
        let hudView = findProgressHUD(for: forView)
        hudView?.completionBlock = completion
        if immediate {
            hudView?.hide(animated: false)
        } else {
            hudView?.hide(animated: true, afterDelay: delay)
        }
    }
    
    static public func displayDuration(for string: String?) -> TimeInterval {
        let minimum = Double.maximum(Double(string?.count ?? 0) * 0.06 + 0.5, minimumDismissTimeInterval)
        return Double.minimum(minimum, maximumDismissTimeInterval)
    }
}