//
//  FirmwareUpdateViewModels.swift
//  FireBoltt
//
//  Created by lemo. on 2020/4/17.
//  Copyright © 2020 Sheldon. All rights reserved.
//

import UIKit
import RxSwift
import iOSDFULibrary
import RTKOTASDK



enum FirmwareOTAPlan {
    case nordic
    /// 富芮坤
    case frq
    /// 瑞昱
    case realtek
    /// 杰里
    case jerry
    
    var fileType: String {
        switch self {
        case .nordic, .realtek: return "zip"
        case .frq: return "bin"
        case .jerry: return "ufw"
        }
    }
}

fileprivate let rtkEncryptKey: [UInt8] = [0x1B, 0x62, 0x8E, 0x11, 0xD3, 0x4C, 0x0D, 0x96, 0x70, 0x7E, 0x7A, 0x80, 0xDF, 0x63, 0x67, 0x1F, 0xFB, 0x10, 0xF6, 0xD1, 0x0C, 0x1A, 0x97, 0x9A, 0xE2, 0x29, 0x2B, 0x09, 0xC5, 0xF8, 0x46, 0x4E].reversed()
fileprivate let rtkEncryptKeyData = Data(rtkEncryptKey)

class FirmwareUpdateViewModels: ViewModel, ViewModelType, RTKLEPeripheralDelegate{
    
    
//    override init() {
//        super.init()
//        jerryOTASuccess()
//    }
  
    
    struct Input {
        let startUpdate: Observable<Void>
    }
    
    struct Output {
        let versionTip: BehaviorRelay<String>
        let versionLogTip: BehaviorRelay<NSAttributedString>
    }
    
    func transform(input: FirmwareUpdateViewModels.Input) -> FirmwareUpdateViewModels.Output {
        input.startUpdate
            .subscribe(onNext: { [weak self] _ in
                // 二次确认
                showAlert(currentViewController()!, MultiLanguageKey_FB.updateConfirmFB.localized, cancelText: "NO", confirmText: "YES") { (result) in
                    if result {
                        self?.startUpdateFirmware()
                    }
                }
            })
            .disposed(by: rx.disposeBag)
        
        let firwareModel = GlobalDeviceProfileModel.shareInstance.firwareModel ?? FirmwareModel()
        currenVersion = firwareModel.firmwareVersion;
        var versionStr = MultiLanguageKey_FB.currenVerisonFB.localized + firwareModel.firmwareVersion
        let versionTip = BehaviorRelay<String>(value: versionStr)
        let versionLogTip = BehaviorRelay<NSAttributedString>(value: NSAttributedString(string: ""))
        // 获取当前固件信息
        SVProgressHUD.show()
        if isDFU == false {
            ProviderRequest(.getLastAppUpgrade(packageName: "FireBoltt.\(firwareModel.adapterNumber)"))
                .flatMapLatest({ [weak self] (json) -> Observable<String> in
                    guard let `self` = self else { return .just("") }
                    SVProgressHUD.dismiss()
                    var url = json["data"]["url"].stringValue
                    url += json["data"]["apkName"].stringValue
                    let version = json["data"]["version"].intValue
                    let newVersion = String(format: "%d.%d.%d", version / 1000, version / 100 % 10, version % 100)
                    self.firmwareUrl = url
                    self.newVersion = json["data"]["apkName"].stringValue
                    // 更新
                    versionStr += ", \(MultiLanguageKey_FB.newVerisonFB.localized)\(newVersion)"
                    let remarkStr = json["data"]["remark"].string ?? ""
                    var remarkStrAtt = NSMutableAttributedString(string: "")
                    do {
                        if let data = remarkStr.data(using: String.Encoding.unicode, allowLossyConversion: true) {
                            let attStr = try NSMutableAttributedString.init(data: data, options: [NSAttributedString.DocumentReadingOptionKey.documentType : NSAttributedString.DocumentType.html], documentAttributes: nil)
                            attStr.addAttribute(NSAttributedString.Key.font, value: SystemRegularFont(16), range: NSMakeRange(0, attStr.length))
                            remarkStrAtt = attStr
                        }
                    }
                    versionLogTip.accept(remarkStrAtt)
                    // 强制升级
                    let isMandatory = json["data"]["imposed"].boolValue
                    if isMandatory {
                        self.startUpdateFirmware(isMandatory: isMandatory)
                    }
                    return Observable.just(versionStr)
                })
                .bind(to: versionTip)
                .disposed(by: rx.disposeBag)
        }else {
            // DFU设备直接获取本地数据升级
            let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
            let filePath = "\(paths)/firmware.zip"
            // 启动升级
            nordicFirmWare(fileName: filePath)
        }
        return Output(versionTip: versionTip,
                      versionLogTip: versionLogTip)
    }
    
    /// 固件升级状态
    private var isOtaUpdate: Bool = false
    /// 固件下载地址
    private var firmwareUrl: String?
    /// 当前版本号
    private var currenVersion: String = ""
    /// 最新版本号
    private var newVersion: String = ""
    /// 是否进入就是DFU设备
    private var isDFU: Bool = false
    /// 升级完成
    let updateComplete = PublishSubject<Void>()
    /// OTA升级类型
    var otaPlan: FirmwareOTAPlan = .nordic
    
    /// FRQOTA
    lazy var frqOTAManager: FRIUpdateOTAManager = {
        return FRIUpdateOTAManager()
    }()
    /// Realtek
    lazy var rtkOTAProfile: RTKOTAProfile = {
       return RTKOTAProfile()
    }()
    

    var rtkOTAPeripheral: RTKOTAPeripheral?
    var rtkDFUPeripheral: RTKMultiDFUPeripheral?
    var rtkOTAUpgradeBins: [RTKOTAUpgradeBin] = []
    //var jlOTARunSDK: JL_RunSDK?
    
    init(isDFU: Bool = false) {
        super.init()
        self.isDFU = isDFU
        /// OTA升级方案
        if let deviceInfo = UserDefaultsManagerFrieBoltt.getDeviceInfo() {
            otaPlan = deviceInfo.otaPlan
            switch otaPlan {
            case .frq:
                frqOTAManager.delegate = self
            case .realtek:
                rtkOTAProfile.delegate = self
            case .jerry:
                //JL_RunSDK.sharedInstance().delegate = self
                BluetoothFireBoltt.shareInstance()?.jl_delegate = self
            default:
                break
            }
        }
        // nordic DFU设备自动进入升级
        kNotificationCenter.rx.notification(Notification.Name(rawValue: BluetoothNotificationAtDFUConnectSuccess))
            .subscribe(onNext: { [weak self] _ in
                guard let `self` = self else { return }
                if self.isOtaUpdate == false {
                    // DFU设备直接获取本地数据升级
                    let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
                    let filePath = "\(paths)/firmware.zip"
                    // 启动升级
                    self.nordicFirmWare(fileName: filePath)
                }
            })
            .disposed(by: rx.disposeBag)
    }
    
//    private func jerryOTASuccess() {
//        /// 杰里OTA升级成功失败监听
//        Observable.of(kNotificationCenter.rx.notification(Notification.Name(rawValue: "JerryOTASuccess")))
//            .merge()
//            .subscribe(onNext: { [weak self] notification in
//                self!.isOtaUpdate = false
//                //SVProgressHUD.showSuccess(withStatus: MultiLanguageKey_FB.firmwareCompleteFB.localized)
//                self!.updateComplete.onNext(())
//
//            })
//            .disposed(by: rx.disposeBag)
//    }
    
}

extension FirmwareUpdateViewModels {
    
    /// 启动固件升级
    private func startUpdateFirmware(isMandatory: Bool = false) {
        if isMandatory {
            // 强制升级仅判断连接状态
            let isConnect = BluetoothFireBoltt.shareInstance()?.isConnected ?? false
            if !isConnect {
                SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.bleTipFB.localized)
                return 
            }
        }else {
            // 是否已连接 && 是否正在同步数据
            if !BluetoothService.shared.checkBleCmdEnable(isShow: true) {
                SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.bleTipFB.localized)
                return
            }
            // 电量判断
            if BluetoothService.shared.power.value < 30 {
                SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.lowPowerFB.localized)
                return
            }
        }
        // 是否获取下载地址
        guard let firmwareUrl = firmwareUrl else {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.networkErrorFB.localized)
            return
        }
        // 版本是否一致
        if currenVersion == newVersion {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.latestVerisonFB.localized)
            return
        }
        // 下载固件 & 启动升级
        SVProgressHUD.setDefaultMaskType(.black)
        ProviderRequestDownloadWithProgress(APIManagerFireBoltt.downLoad(url: firmwareUrl))
            .subscribe(onNext: {
                [weak self] (result) in
                guard let `self` = self else {return}
                let progress = String(format: "%.0f%%", result.progress * 100)
                SVProgressHUD.show(withStatus: "下载中".localized + progress)
                if result.completed {
                    // 写入OTA文件
                    let data = (result.response?.data ?? Data()) as NSData
                    let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
                    let filePath = self.otaPlan == .jerry ?  String(format: "%@/%@", paths,self.newVersion) : "\(paths)/firmware.\(self.otaPlan.fileType)"
                    if !data.write(toFile: filePath, atomically: true) {
                        SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.networkErrorFB.localized)
                        return
                    }
                    switch self.otaPlan {
                    case .nordic:
                        self.nordicFirmWare(fileName: filePath)
                    case .frq:
                        self.frqOTAFirmWare(data: data)
                    case .realtek:
                        self.realtekOTAFirmWare(filePath: filePath)
                    case .jerry:
                        self.JLUpdateFailure(filePath: filePath, fileData: data)
                        print("杰里SDK升级")
                    }
                }
            }).disposed(by: rx.disposeBag)
//        // 测试固件地址
//        guard let filePath = Bundle.main.path(forResource: "v1014", ofType: "bin"), let data = NSData(contentsOfFile: filePath) else { return }
//        switch otaPlan {
//        case .nordic:
//            nordicFirmWare(fileName: filePath)
//        case .frq:
//            frqOTAFirmWare(data: data)
//        case .realtek:
//            realtekOTAFirmWare(filePath: filePath)
//        }
    }
    
    /// 开始固件升级
    private func nordicFirmWare(fileName: String) {
        guard let selectedFirmware = DFUFirmware.init(urlToZipFile: URL(fileURLWithPath: fileName)) else {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.updateFirmwareFailFB.localized)
            return
        }
        guard let peripheral = BluetoothFireBoltt.shareInstance()!.currenModel.peripheral else {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.updateFirmwareFailFB.localized)
            return
        }
        isOtaUpdate = true
        let centralManager = CBCentralManager()
        let initiator = DFUServiceInitiator.init(centralManager: centralManager, target: peripheral)
        _ = initiator.with(firmware: selectedFirmware)
        initiator.alternativeAdvertisingNameEnabled = false
        initiator.logger = self
        initiator.delegate = self
        initiator.progressDelegate = self
        _ = initiator.start()
    }
    
    /// 开始FRQ固件升级
    private func frqOTAFirmWare(data: NSData) {
        guard let write = BluetoothFireBoltt.shareInstance()?.frqOTAwritecharacteristic, let blemodel = BluetoothFireBoltt.shareInstance()!.currenModel, let peripheral = blemodel.peripheral else {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.updateFirmwareFailFB.localized)
            return
        }
        isOtaUpdate = true
        frqOTAManager.binData = data as Data
        frqOTAManager.updateVersion = newVersion
        frqOTAManager.startUpdateOTA(peripheral, write: write)
    }
    
    /// 开始Realtek固件升级
    private func realtekOTAFirmWare(filePath: String) {
        guard let blemodel = BluetoothFireBoltt.shareInstance()!.currenModel, let peripheral = blemodel.peripheral, let otaPeripheral = self.rtkOTAProfile.instantiatePeripheral(with: peripheral) as? RTKOTAPeripheral, let rtkOTAUpgradeBins = try? RTKOTAUpgradeBin.imagesExtracted(fromMPPackFilePath: filePath) else {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.updateFirmwareFailFB.localized)
            return
        }
        isOtaUpdate = true
        self.rtkOTAPeripheral = otaPeripheral
        self.rtkOTAProfile.connect(to: otaPeripheral)
        self.rtkOTAUpgradeBins = rtkOTAUpgradeBins
    }
        
    private func handleUpdateFailure() {
        if self.isOtaUpdate {
            SVProgressHUD.showError(withStatus: MultiLanguageKey_FB.updateFirmwareFailFB.localized)
            isOtaUpdate = false
        }
    }
    
    /// 杰里固件升级
    private func JLUpdateFailure(filePath: String, fileData:NSData){
//        Bluetooth.shareInstance()! .jerryOTAUpgrade(filePath,fileData: fileData as Data)
        BluetoothFireBoltt.shareInstance()?.otaFunc(withFilePaths: filePath);
        SVProgressHUD .dismiss()
    }
    
}


// MARK:- DFUProgressDelegate, DFUServiceDelegate, LoggerDelegate
extension FirmwareUpdateViewModels: DFUProgressDelegate, DFUServiceDelegate, LoggerDelegate {
    func dfuProgressDidChange(for part: Int, outOf totalParts: Int, to progress: Int, currentSpeedBytesPerSecond: Double, avgSpeedBytesPerSecond: Double) {
        SVProgressHUD.show(withStatus: "固件升级中".localized + " \(progress)%")
        LFLogs("固件升级进度 part: \(part) totalProgress: \(totalParts) progress: \(progress) currentSpeedBytesPerSecond: \(currentSpeedBytesPerSecond) avgSpeedBytesPerSecond: \(avgSpeedBytesPerSecond)")
    }
    
    func dfuStateDidChange(to state: DFUState) {
        LFLogs("固件升级状态: \(state)")
        if (state == .completed) {
            isOtaUpdate = false
            SVProgressHUD.showSuccess(withStatus: MultiLanguageKey_FB.firmwareCompleteFB.localized)
            updateComplete.onNext(())
        }
    }
    
    func dfuError(_ error: DFUError, didOccurWithMessage message: String) {
        if error.rawValue != 0 {
            handleUpdateFailure()
        }
    }
    
    func logWith(_ level: LogLevel, message: String) {
        LFLogs("logWith level: \(level) message: \(message)")
    }
}

// MARK:- FRQUpdateOTAManagerDelegate
extension FirmwareUpdateViewModels: FRIUpdateOTAManagerDelegate {

    func onOTAUpdateStatusDidChange(_ ota: FRIUpdateOTAManager, withProgress aProgress: Float) {
        LFLogs("[FRQOTA] onOTAUpdateStatusDidChange aProgress:\(aProgress)")
        SVProgressHUD.show(withStatus: "固件升级中".localized + " \(Int(aProgress))%")
    }
    
    func onOTAUpdateStatusCompletion(_ ota: FRIUpdateOTAManager) {
        LFLogs("[FRQOTA] onOTAUpdateStatusCompletion")
        isOtaUpdate = false
        SVProgressHUD.showSuccess(withStatus: MultiLanguageKey_FB.firmwareCompleteFB.localized)
        updateComplete.onNext(())
    }
    
    func onOTAUpdateStart(_ ota: FRIUpdateOTAManager) {
        LFLogs("[FRQOTA]  onOTAUpdateStart")
    }
    
    func onOTAUpdateStatusFailure(_ ota: FRIUpdateOTAManager, error err: Error) {
        LFLogs("[FRQOTA]  onOTAUpdateStatusFailure")
        handleUpdateFailure()
    }

}



// MARK:- RTKLEProfileDelegate, RTKMultiDFUPeripheralDelegate
extension FirmwareUpdateViewModels: RTKLEProfileDelegate, RTKMultiDFUPeripheralDelegate {

    func profileManagerDidUpdateState(_ profile: RTKLEProfile) {
    }
    
    func profile(_ profile: RTKLEProfile, didConnect peripheral: RTKLEPeripheral) {
        if peripheral == rtkOTAPeripheral, let rtkOTAPeripheral = rtkOTAPeripheral {
            // 转换DFU外设
            if rtkOTAUpgradeBins.count == 1 && !(rtkOTAUpgradeBins.last?.icDetermined ?? false) {
                rtkOTAUpgradeBins.last?.assertAvailable(for: rtkOTAPeripheral)
            }
            // 判断升级类型
            if rtkOTAPeripheral.canEnterOTAMode {
                rtkOTAProfile.translate(rtkOTAPeripheral) { [weak self] success, error, dfuPeripheral in
                    if success, let dfuPeripheral = dfuPeripheral {
                        self?.rtkDFUPeripheral = dfuPeripheral as? RTKMultiDFUPeripheral
                        self?.rtkDFUPeripheral?.delegate = self
                        self?.rtkOTAProfile.connect(to: dfuPeripheral)
                    }else {
                        self?.handleUpdateFailure()
                    }
                }
                return
            }
            handleUpdateFailure()
        }else if peripheral == rtkDFUPeripheral {
            // 启动升级
            rtkDFUPeripheral?.setEncryptKey(rtkEncryptKeyData)
            rtkDFUPeripheral?.upgradeImages(rtkOTAUpgradeBins, inOTAMode: true)
        }
    }
    
    func dfuPeripheral(_ peripheral: RTKDFUPeripheral, didSend length: UInt, totalToSend totalLength: UInt) {
        let progress = CGFloat(length) / CGFloat(totalLength) * 100
        LFLogs("[RTKOTA] dfuPeripheral progress:\(progress)")
        SVProgressHUD.show(withStatus: "固件升级中".localized + " \(Int(progress))%")
    }
    
    func dfuPeripheral(_ peripheral: RTKDFUPeripheral, didFinishWithError err: Error?) {
        if err == nil {
            LFLogs("[RTKOTA] dfuPeripheral Upgrade complete successfully")
            isOtaUpdate = false
            SVProgressHUD.showSuccess(withStatus: MultiLanguageKey_FB.firmwareCompleteFB.localized)
            updateComplete.onNext(())
        }else {
            LFLogs("[RTKOTA] dfuPeripheral Upgrade Fail")
            handleUpdateFailure()
        }
    }
    
}

extension FirmwareUpdateViewModels:JL_SDKOtaDelegate{
    func otaProgress(with result: JL_OTAResult, withProgress progress: Float) {
        isOtaUpdate = true
        if result == .success{
            isOtaUpdate = false
            SVProgressHUD.showSuccess(withStatus: MultiLanguageKey_FB.firmwareCompleteFB.localized)
            updateComplete.onNext(())
            BluetoothFireBoltt.shareInstance()?.otaTimeClose()
        }
        
        if result == .fail {
            SVProgressHUD.dismiss()
            BluetoothFireBoltt.shareInstance()?.otaTimeClose()
            print("---> 固件升级失败")
            // Bluetooth.shareInstance()?.startAndStopReconnect(true)
            handleUpdateFailure()
        }
        
        
        }
    
}