//
//  MoneyRequestViewController.swift
//  GMERemittance
//
//  Created by Sujal on 3/2/18.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

class MoneyRequestViewController: UIViewController {

    @IBOutlet weak var tableView: UITableView!
    
    var moneyRequests: [Transaction]?
    static var notificationCode: String = ""

    private var tracktransactionviewmodel: TrackTransactionViewModel?
    private var moneyrequestviewmodel = MoneyRequestViewModel()
    
    private var tappedIndex: Int!
    
    private var activityIndicator: UIActivityIndicatorView = UIActivityIndicatorView()
    
    public var fromNotification: Int?
    
    public static var moneyTransactionListConnectionTimeOut = 0

    /**
        Check internet connection
     */
    func setUpNetworkListenerTransaction() {
        self.tracktransactionviewmodel?.internetConnection.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.tracktransactionviewmodel?.internetConnection.value = nil
            self.enableUserInteractions()
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            self.popUpMessage(value: 15)
        }
    }
    
    /**
        Check internet connection
     */
    func setUpNetworkListenerMoneyRequest() {
        self.tracktransactionviewmodel?.internetConnection.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.tracktransactionviewmodel?.internetConnection.value = nil
            self.enableUserInteractions()
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            self.popUpMessage(value: 15)
        }
        self.moneyrequestviewmodel.internetConnection.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.moneyrequestviewmodel.internetConnection.value = nil
            self.enableUserInteractions()
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            self.popUpMessage(value: 15)
        }
    }
    
    override func viewDidLoad() {
        
        super.viewDidLoad()
        if MoneyRequestViewController.notificationCode == "p201" {
            setUpNavBar(id: 208, title: "Wallet to Wallet Transfer")
        } else {
            setUpNavBar(id: 204, title: "Wallet to Wallet Transfer")
        }
        
        tracktransactionviewmodel?.transactionListConnectionTimeOut.value = nil
        /**
         connection timeout
         */
        tracktransactionviewmodel?.transactionListConnectionTimeOut.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.stopLoading()
            if self.fromNotification != 0{
                if MoneyRequestViewController.moneyTransactionListConnectionTimeOut == 0{
                    MoneyRequestViewController.moneyTransactionListConnectionTimeOut = MoneyRequestViewController.moneyTransactionListConnectionTimeOut+1
                    self.popUpMessage(value: 35)
                }
            }
        }
        
        moneyrequestviewmodel.moneyRequestConnectionTimeOut.value = nil
        /**
         connection timeout
         */
        moneyrequestviewmodel.moneyRequestConnectionTimeOut.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.stopLoading()
            self.popUpMessage(value: 20)
        }
        
        
        if moneyRequests == nil  {
            tracktransactionviewmodel = TrackTransactionViewModel()
            
            setUpAnotherLoginListener(genericviewmodel: tracktransactionviewmodel!)
            
            setUpTransactionListener()
            setUpNetworkListenerTransaction()
            
            self.startLoading()
            tracktransactionviewmodel!.fetchTransactionListForTrackAndWallet(recipientId: "", recipientName: "", transactionType: "moneyRequest", startDate: nil, endDate: nil, txPage: nil, txSize: nil)
           
        } else {
            moneyrequestviewmodel.setMoneyRequests(requests: moneyRequests!)
        }
        
        setUpAnotherLoginListener(genericviewmodel: moneyrequestviewmodel)
        setUpNetworkListenerMoneyRequest()
        setUpMoneyRequestRejectListener()
        
        self.tableView.tableFooterView = UIView()
        self.tableView.delegate = self
        self.tableView.dataSource = self
        
        self.tableView.estimatedRowHeight = 136
        self.tableView.rowHeight = UITableViewAutomaticDimension
    }
    
    /**
     Disable user interaction while fetching data from api
     */
    func startLoading(){
        self.showActivityIndicator(activityIndicator: self.activityIndicator)
        self.disableUserInteractions()
    }
    
    /**
     Enable user interaction while fetching data from api
     */
    func stopLoading(){
        self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
        self.enableUserInteractions()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    
    /**
        Api request to fetch transaction list for track and wallet
     */
    func setUpTransactionListener() {
        tracktransactionviewmodel!.transactionListObtained.bind{ [unowned self] in
            guard $0 != nil else {
                return
            }
            
            self.stopLoading()
            
            guard $0! else {
                
                 //self.popUpMessageError(value: 10, message: (self.tracktransactionviewmodel!.getErrorMessage()))
                return
            }
            
            self.moneyrequestviewmodel.setMoneyRequests(requests: self.tracktransactionviewmodel!.getTransactions())
            self.tableView.reloadData()
        }
    }
    
    /**
        Api request to remove money request
     */
    func setUpMoneyRequestRejectListener() {
        moneyrequestviewmodel.requestRejected.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            
            self.stopLoading()
            
            if !$0! {
                self.popUpMessageError(value: 10, message: self.moneyrequestviewmodel.getErrorMessage())
            } else {
                self.moneyrequestviewmodel.removeMoneyRequest(atIndex: self.tappedIndex)
                self.tableView.deleteRows(at: [IndexPath(item: self.tappedIndex, section: 0)], with: .automatic)
                
            }
            self.moneyrequestviewmodel.requestRejected.value = nil
        }
    }
}


extension MoneyRequestViewController: UITableViewDelegate, UITableViewDataSource, MoneyRequestDelegate {
    
    func readMessage(_ sender: MoneyRequestTableViewCell) {
        
        guard let tappedIndexPath = tableView.indexPath(for: sender) else {
            return
        }
        
        guard let navController = self.navigationController else {
            return
        }
    
        
        if let popUpViewController = UIStoryboard.init(name: "WalletTransfer", bundle: Bundle.main).instantiateViewController(withIdentifier: "walletPopUp") as? WalletPopUpViewController {
            
            let moneyRequest = moneyrequestviewmodel.getMoneyRequest(atIndex: tappedIndexPath.row)
           
            if let name = moneyRequest.senderName{
                popUpViewController.name = name
            }
            if let date = moneyRequest.date{
                popUpViewController.dateTime = "Message" + " " + "(" + unixTimeStampToDate(unixTimeStamp: date) + ")"
            }
            if let reason = moneyRequest.reason{
                popUpViewController.message = reason
            }
            
            navController.addChildViewController(popUpViewController)
            popUpViewController.view.frame = navController.view.bounds
            navController.view.addSubview(popUpViewController.view)
            popUpViewController.didMove(toParentViewController: navController)
        }
    }
    
    func acceptRequest(_ sender: MoneyRequestTableViewCell) {
        guard let tappedIndexPath = tableView.indexPath(for: sender) else {
            return
        }
        let storyboard = UIStoryboard.init(name: "WalletTransfer", bundle: Bundle.main)
        if let walletViewController = storyboard.instantiateViewController(withIdentifier: "walletViewController") as? WalletViewController {
            
            walletViewController.transaction = moneyrequestviewmodel.getMoneyRequest(atIndex: tappedIndexPath.row)
            
            self.navigationController!.pushViewController(walletViewController, animated: true)
        }
        
    }
    
    func declineRequest(_ sender: MoneyRequestTableViewCell) {
        guard let tappedIndexPath = tableView.indexPath(for: sender) else {
            return
        }
        tappedIndex = tappedIndexPath.row
        displayPasswordDialog(transactionID: moneyrequestviewmodel.getMoneyRequest(atIndex: tappedIndex).transactionId)
    }
    
    func displayPasswordDialog(transactionID: String) {
        let alertController = UIAlertController(title: "Enter your login password", message: nil, preferredStyle: .alert)
        
        alertController.addTextField { (textField : UITextField!) -> Void in
            textField.placeholder = "Password"
            textField.isSecureTextEntry = true
            textField.tag = 51 //unique identifier set
            textField.delegate = self
        }
        
        let confirmAction = UIAlertAction(title: "Confirm", style: .default, handler: {
            alert -> Void in
            
            let valueTextField = alertController.textFields![0] as UITextField
            if valueTextField.text != "" {
                self.disableUserInteractions()
                self.showActivityIndicator(activityIndicator: self.activityIndicator)
                self.moneyrequestviewmodel.setPassword(password: valueTextField.text!)
                self.moneyrequestviewmodel.rejectRequest(transactionID: transactionID, transferType: "request")
            } else {
                self.popUpMessageInfo(value: 16, title: "Password is missing", message: "Could not complete your request")
            }
        })
        
        let cancelAction = UIAlertAction(title: "Cancel", style: .destructive, handler: {
            (action : UIAlertAction!) -> Void in
            
        })
        
        cancelAction.setValue(UIColor.black, forKey: "titleTextColor")
        confirmAction.setValue(UIColor(hex:0xEC1C24), forKey: "titleTextColor")

        alertController.addAction(cancelAction)
        alertController.addAction(confirmAction)
        
        self.present(alertController, animated: true, completion: nil)
        
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
       
        return moneyrequestviewmodel.getMoneyRequests().count
    }
    
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let moneyRequestCell = tableView.dequeueReusableCell(withIdentifier: "moneyRequestCell", for: indexPath) as? MoneyRequestTableViewCell
    
        let moneyRequest = moneyrequestviewmodel.getMoneyRequest(atIndex: indexPath.row)
        

        if let receiverName = moneyRequest.receiverName{
            moneyRequestCell?.labelName.text = receiverName
        }
        if let payoutAmountOriginal = moneyRequest.payoutAmountOriginal{
            moneyRequestCell?.labelAmount.text = getCommaAddedAmountString(amountString:  payoutAmountOriginal)
        }
        if let receiverId = moneyRequest.receiverId{
            moneyRequestCell?.labelGMEID.text = receiverId
        }
        if let date = moneyRequest.date{
            moneyRequestCell?.labelDateTime.text = unixTimeStampToDate(unixTimeStamp: date)
        }

        moneyRequestCell?.labelInitial.text = moneyRequestCell?.labelName.text?.prefix(1).uppercased()
        moneyRequestCell?.labelInitial.backgroundColor = UIColor(hex: 0x92daea)
        
        moneyRequestCell?.labelInitial.layer.cornerRadius =  (moneyRequestCell?.labelInitial.frame.height)!/2
        
        moneyRequestCell?.delegate = self
        
        return moneyRequestCell!
    }
}

extension MoneyRequestViewController: UITextFieldDelegate {
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        if textField.tag == 51 {
            textField.tag = 0
            return false
        }
        return true
    }
}