LONDON-IOS/GMERemittance/Module/SendMoney/SendMoneyPaymentMode/User Interface/View/BankBranchPicker/BankBranchPickerViewController.swift

//
//  ItemsPickerViewController.swift
//
//
//  Created by shishir sapkota
//


import UIKit



class BankBranchPickerViewController: UIViewController {
    
    struct Constants {
        static let seperatorColor = "#DFDFDF"
        static let tintColor = UIColor.red
        static let gradientviewLeftColor = UIColor.init(hex: "#FF0000")
        static let gradientviewRightColor = UIColor.init(hex: "#9C272D")
    }
    
    @IBOutlet weak var titleView: UIView!
    @IBOutlet weak var tableVIew: UITableView!
    @IBOutlet weak var searchTextField: UITextField!
    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var noResultFoundLabel: UILabel!
    @IBOutlet weak var mainview: UIView!
    @IBOutlet weak var infoLabel: UILabel!
    
    var data: [SendMoneyBankBranch] = [] {
        didSet {
            self.tableVIew.reloadData()
        }
    }
    var countryCode: String?
    var bankId: String?
    
    var selectedData : SendMoneyBankBranch?
    
    var filteredPlaces: [SendMoneyBankBranch] = [] {
        didSet {
            self.tableVIew.reloadData()
            self.setNoResultText()
            self.filteredPlaces.isEmpty ? (self.noResultFoundLabel.isHidden = false) : (self.noResultFoundLabel.isHidden = true)
        }
    }
    
    var allowMultipleSelection = false
    var allowSelection = true
    var doneAction: (([SendMoneyBankBranch?]) -> ())?
    var defaultSelectedData: [SendMoneyBankBranch?] = []
    
    var searchText = ""
    var type: PickerTitle?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setupTableView()
        self.setupSearchService()
        self.setupPlaces()
        self.setupTarget()
        self.titleView.layer.cornerRadius = 10
        self.mainview.layer.cornerRadius = 10
        setTitle()
        self.showProgressHud()
        self.fetchBranch(searchString: "")
    }
    

    private func setNoResultText() {
        var text = ""
        if let type = self.type  {
            text = "No matching \(type.rawValue) found for "
        } else {
            text = "No matching result found for "
        }
        self.noResultFoundLabel.text = text + "'\(searchText)'"
    }
    
    private func setupTarget() {
        self.searchTextField.addTarget(self, action: #selector(self.textChanged(sender:)), for: UIControlEvents.editingChanged)
    }
    
    @objc private func textChanged(sender: UITextField) {
        let text = sender.text!
        self.infoLabel.isHidden = text.count >= 3 
    }
    
    private func setTitle() {
        self.titleLabel.text = "Select " + (self.type?.rawValue ?? "Location").capitalized
    }
    
    private func setupPlaces() {
        self.filteredPlaces = self.data
    }
    
    private func setupTableView() {
        self.tableVIew.delegate = self
        self.tableVIew.dataSource = self
        self.tableVIew.separatorColor = UIColor.init(hex: Constants.seperatorColor)
        self.tableVIew.allowsMultipleSelection = self.allowMultipleSelection
        self.tableVIew.allowsSelection = self.allowSelection
    }
    
    private func setupSearchTextFieldUi() {
        let searchIconImageView = UIImageView(image: #imageLiteral(resourceName: "ic_search"))
        searchIconImageView.tintColor = Constants.tintColor
        self.searchTextField.leftView = searchIconImageView
        self.searchTextField.leftViewMode = .always
    }
    
    
    private func setupSearchService() {
        self.searchTextField.addTarget(self, action: #selector(self.search(sender:)), for: UIControlEvents.editingChanged)
    }
    
    
    @objc private func search(sender: UITextField) {
        let searchString = sender.text!
        // make a api call here
        guard searchString.count > 2 else {
            self.filteredPlaces = []
            return
        }
        fetchBranch(searchString: searchString)
        
    }
    
    private func fetchBranch(searchString: String) {
        self.infoLabel.isHidden = true
        let countryCode = self.countryCode ?? ""
        let bankId = self.bankId ?? ""
        self.fetchBranches(countryCode: countryCode, bankId: bankId, branchName: searchString)
    }
    // MARK: IBActions
    
    @IBAction func close(_ sender: Any?) {
        self.doneAction?([self.selectedData])
        self.dismiss(animated: true, completion: nil)
    }
    
    
    
    @IBAction func dismiss(_ sender: Any) {
        self.dismiss(animated: true, completion: nil)
    }
    
    @IBAction func clear(_ sender: Any) {
        self.tableVIew.indexPathsForSelectedRows?.forEach({self.tableVIew.deselectRow(at: $0, animated: true)})
        self.tableVIew.indexPathForSelectedRow.map({self.tableVIew.deselectRow(at: $0, animated: true)})
        self.defaultSelectedData = []
        self.tableVIew.reloadData()
    }
    
}

extension BankBranchPickerViewController: UITableViewDelegate {
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 75
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        self.selectedData = filteredPlaces.elementAt(index: indexPath.row)
        if !self.allowMultipleSelection {
            self.close(nil)
        }
    }
    
    func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
        let cell = tableView.cellForRow(at: indexPath)
        cell?.accessoryType = .none
    }
}

extension BankBranchPickerViewController: UITableViewDataSource {
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return filteredPlaces.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableVIew.dequeueReusableCell(withIdentifier: "BankBranchPickerCell", for: indexPath) as! BankBranchPickerCell
        cell.place = self.filteredPlaces.elementAt(index: indexPath.row)?.name
        cell.setup()
        return cell
    }
}

extension BankBranchPickerViewController: FetchBankBranchService {
    func fetchBranches(countryCode: String, bankId: String, branchName: String) {
        self.fetchBranch(countryCode: countryCode, bankId: bankId, branchName: branchName, success: { (models) in
            self.hideProgressHud()
            self.filteredPlaces = models
        }) { (error) in
            self.hideProgressHud()
            self.alert(message: error.localizedDescription)
        }
    }
}