//
//  CustomDialViewController.swift
//  Twear
//
//  Created by yangbin on 2022/1/20.
//

import UIKit
import MBProgressHUD
import Photos
import TZImagePickerController
import SwiftDate

class CustomDialViewController: UIViewController, TZImagePickerControllerDelegate {
    
    @IBOutlet weak var collectionView: UICollectionView!
    @IBOutlet weak var collectionViewFlowLayout: UICollectionViewFlowLayout!
    @IBOutlet weak var progressView: CustomProgress!
    var picker: TZImagePickerController?
    var imagePath = "custom"
    
    @IBOutlet weak var imageView: UIImageView!
    private var maxImageCount = 9
    var imageArray: [UIImage] = []
    var imageKeys: [String] = []
    var curIndex: Int = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configureCollectionView()
        
//        progressView.label.text = LocString("安装")
//        progressView.label.textColor = UIColor.white
        progressView.label.font = RegularFont(15)
//        progressView.backView.backgroundColor = UIColor.rgbColorFromHex(0x00993E)
//        progressView.layer.borderWidth = 1
//        progressView.layer.borderColor = UIColor.rgbColorFromHex(0x00993E).cgColor
        progressView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(sync)))
        
        let imagesName = UIImage.getImagesName(path: imagePath).sorted()
        if imagesName.count > 0 {
            curIndex = 1
            initProgress()
            imageKeys.append(contentsOf: imagesName)
            for imageName in imagesName {
                imageArray.append(UIImage.getImageFromPath(imageName, path: imagePath)!)
            }
            imageView.image = imageArray[0]
        } else {
            initProgress(false)
        }
        // Do any additional setup after loading the view.
    }
    
    func configureCollectionView(){
        collectionViewFlowLayout.scrollDirection = .horizontal
        collectionViewFlowLayout.minimumLineSpacing = 10
        collectionViewFlowLayout.minimumInteritemSpacing = 10
        collectionViewFlowLayout.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 10, right: 0)
        collectionViewFlowLayout.itemSize = CGSize(width: 68.5, height: 80)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.showsVerticalScrollIndicator = false
        collectionView.bounces = true
        
        //        self.automaticallyAdjustsScrollViewInsets = false
        collectionView.register(UINib.init(nibName: "AddPictureCell", bundle: Bundle.main), forCellWithReuseIdentifier: "AddPictureCell")
    }
    

    
    @IBAction func sync() {
        if IsDailSyncing { return }
        if self.imageView.image == nil {
            return
        }
        let image = resizeImage(image: self.imageView.image!, targetSize: CGSize(width: 240, height: 280))
//        let image = UIImage(contentsOfFile:  "\(Bundle.main.resourcePath!)/test3.bmp")
//        imageView.image = image
//        let options: NSDictionary = [:]
//        let convertToBmp = image.toData(options: options, type: .bmp)
//        guard let bmpData = convertToBmp else {
//            print("😡 ERROR: could not convert image to a bitmap bmpData var.")
//            return
//        }
//        let data = UIImage(data: convertToBmp!)!.rbg565Data()!
//        let b = [UInt8](data)
//
//        for i in 0..<100 {
//            print("\(i)--\(String(format: "%02X", b[i]))")
//        }
//        print(image.cgImage?.width)
//        print(image.cgImage?.height)
//        print(data.count)
        if let imageData = image.rbg565Data(), imageData.count > 0 {
            updateUserInteraction(true)
            updateProgress(0)
            BluetoothManager.shared.syncCustomDial(imageData) {[weak self] progress in
                self?.updateProgress(progress)
            } completion: {[weak self] error in
                self?.updateUserInteraction(false)
                if error == nil {
                    self?.updateProgress(100)
                } else {
                    self?.initProgress()
                    self?.showAlert(title: LocString("提示"), message: LocString("安装失败，请重试"), cancelText: nil)
                }
            }
        }
    }
    
    func updateProgress(_ value: Int) {
        if value == 100 {
            progressView.value = 100
            progressView.trackView.backgroundColor = LineColor
            progressView.layer.borderColor = LineColor.cgColor
            progressView.layer.borderWidth = 0
            progressView.label.text = LocString("安装完成")
            progressView.label.textColor = .white
        } else {
            progressView.value = value
            progressView.backView.backgroundColor = .white
            progressView.trackView.backgroundColor = UIColor.rgbColorFromHex(0x64C876)
            progressView.layer.borderWidth = 1
            progressView.layer.borderColor = UIColor.rgbColorFromHex(0x00993E).cgColor
            progressView.label.text = LocString("安装中...")
            progressView.label.textColor = .black            
        }
    }
    
    func initProgress(_ bool: Bool = true) {
        if bool {
            progressView.backView.backgroundColor = TintColor
        } else {
            progressView.backView.backgroundColor = LineColor
        }
        progressView.value = 0
        progressView.label.text = LocString("安装")
        progressView.label.textColor = .white
        progressView.layer.borderWidth = 0
    }

    private func addImages(_ images: [UIImage]) {
        if IsDailSyncing {
            MBProgressHUD.showh(LocString("正在推送表盘中，请稍后..."))
            return
        }
        _ = MBProgressHUD.showMessage("")
        DispatchQueue.main.asyncAfter(deadline: .now()+0.1) {
            self.curIndex = self.imageArray.count+1
            for image in images {
                self.imageArray.append(image)
                self.imageView.image = image
                let key = Date().toString(.custom("MMddHHmmss"))
                self.imageKeys.append(key)
                _ = image.saveImageToPath(key, path: self.imagePath)
            }
            
            MBProgressHUD.hide()
            self.collectionView.reloadData()
        }
        
    }
    
    private func deleteImage(_ item: Int) {
        if IsDailSyncing {
            MBProgressHUD.showh(LocString("正在推送表盘中，请稍后..."))
            return
        }
        let alertVC = UIAlertController(title: LocString("提示"), message: LocString("确定删除此背景吗？"), preferredStyle: .alert)
        let confirm = UIAlertAction(title: LocString("确定"), style: .destructive) { [weak self] (action) in
            if UIImage.deleteImage(name: (self?.imageKeys[item])!, path: (self?.imagePath)!) {
                self?.imageArray.remove(at: item)
                self?.imageKeys.remove(at: item)
            }
            if self?.imageArray.count == 0 {
                self?.curIndex = 0
                self?.imageView.image = nil
                self?.initProgress(false)
            } else {
                if self?.imageArray.count == item {
                    self?.curIndex = item
                    self?.imageView.image = self?.imageArray[item-1]
                } else if item+1 == self?.curIndex {
                    self?.imageView.image = self?.imageArray[item]
                } else {
                    self?.curIndex -= 1
                }
                self?.initProgress()
            }
            self?.collectionView.reloadData()
        }
        let cancel = UIAlertAction(title: LocString("取消"), style: .default, handler: nil)
        alertVC.addAction(cancel)
        alertVC.addAction(confirm)
        present(alertVC, animated: true, completion: nil)
    }
    
    func updateUserInteraction(_ isSyncing: Bool) {
        IsDailSyncing = isSyncing
        let navController = navigationController as? ZCNavigationController
        navController?.enableScreenEdgePanGestureRecognizer(!isSyncing)
    }
    
    private func photoAlbum() {
        
        if PHPhotoLibrary.authorizationStatus().rawValue == 2 {
            MBProgressHUD.show("请在“设置-隐私-照片“选项中,允许'HDF wear'访问你的照片")
            return
        }
        //        maxImageCount-imageArray.count
        picker = TZImagePickerController(maxImagesCount: 1, columnNumber: 3, delegate: self)
        picker?.modalPresentationStyle = .fullScreen
        //        picker?.allowPickingVideo = true
        //        if imageArray.count > 0 {
        //            if newsType == .image {
        picker?.allowPickingVideo = false
        //            }
        //        }240 280
        //视频
        picker?.scaleAspectFillCrop = true
        picker?.allowCameraLocation = false //位置
        let cropWidth: CGFloat = SCREEN_WIDTH*0.65
        let cropHeight: CGFloat = cropWidth*7/6
        picker?.cropRect = CGRect(x: (SCREEN_WIDTH-cropWidth)/2, y: (SCREEN_HEIGHT-cropHeight)/2, width: cropWidth, height: cropHeight)
        picker?.allowPickingGif = false //GIF
        picker?.allowTakePicture = true //内部拍照
        picker?.allowCrop = true //裁剪
        
        picker?.didFinishPickingPhotosHandle = {[weak self] (photos, assets, isSelectOriginalPhoto) -> Void in
            if let images = photos {
                self?.addImages(images)
                self?.initProgress()
            }
        }
        

        self.present(picker!, animated: true, completion: nil)
        
    }
    
    /*
     // MARK: - Navigation
     
     // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
     // Get the new view controller using segue.destination.
     // Pass the selected object to the new view controller.
     }
     */
    
    func resizeImage(image: UIImage, targetSize: CGSize) -> UIImage {
        let size = image.size

        let widthRatio  = targetSize.width  / size.width
        let heightRatio = targetSize.height / size.height

        // Figure out what our orientation is, and use that to form the rectangle
        var newSize: CGSize
        if(widthRatio > heightRatio) {
            newSize = CGSize(width: size.width * heightRatio, height: size.height * heightRatio)
        } else {
            newSize = CGSize(width: size.width * widthRatio,  height: size.height * widthRatio)
        }

        // This is the rect that we've calculated out and this is what is actually used below
        let rect = CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height)

        // Actually do the resizing to the rect using the ImageContext stuff
        UIGraphicsBeginImageContextWithOptions(newSize, false, 1.0)
        image.draw(in: rect)
        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return newImage!
    }
    
}
extension CustomDialViewController: UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        if IsDailSyncing {
            MBProgressHUD.showh(LocString("正在推送表盘中，请稍后..."))
            return
        }
        if indexPath.row == 0 {
            if imageArray.count <= maxImageCount {
                photoAlbum()
            } else {
                MBProgressHUD.showh(LocString("最多只能添加9张图片"))
            }
        } else {
            curIndex = indexPath.row
            imageView.image = imageArray[indexPath.row-1]
            collectionView.reloadData()
        }
        initProgress()
        
    }
    
    //    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    //        return CGSize(width: 60, height: 80)
    //    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        //        if newsType == .video {
        //            maxImageCount = 1
        //        }
        //        if imageArray.count != maxImageCount {
        return imageArray.count + 1
        //        }
        //        return maxImageCount
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell: AddPictureCell = collectionView.dequeueReusableCell(withReuseIdentifier: "AddPictureCell", for: indexPath) as! AddPictureCell
        //        cell.backgroundColor =
        var array = imageArray
        array.insert(UIImage(named: "image_add")!, at: 0)
        var keyArray = imageKeys
        keyArray.insert("add", at: 0)
        if indexPath.row == 0 {
            cell.selectedImageView.isHidden = true
        } else if indexPath.row == curIndex {
            cell.selectedImageView.isHidden = false
        } else {
            cell.selectedImageView.isHidden = true
        }
        
        //        array.append(UIImage(named: "image_add")!)
        //        if imageArray.count != maxImageCount {
        cell.deleteBtn.isHidden = indexPath.row == 0//imageArray.count
        //        } else {
        //            cell.deleteBtn.isHidden = false
        //        }
        cell.picture.image = array[indexPath.row]
        cell.imageKey = keyArray[indexPath.row]
        
        cell.deleteBtnBlock = {[weak self] in
            self?.deleteImage(indexPath.row-1)
        }
        return cell
    }
    
    
}