Issue

HistoryTransactionViewModel.swift

//
//  HistoryTransactionViewModel.swift
//  MamiKos
//
//  Created by Mamikos on 19/05/20.
//  Copyright © 2020 GIT. All rights reserved.
//

import RxSwift
import RxCocoa
import SwiftyJSON

class HistoryTransactionViewModel: NetworkViewModel {
    let disposeBag = DisposeBag()
    var transactionHistoryResponse = BehaviorRelay<NetworkResponse?>(value: nil)
    var transactionHistories = BehaviorRelay<[TransactionHistoryModel]?>(value: nil)
    var total = 0
    var offset = 0
    static let limit = 10
    
    override init() {
        super.init()
        registerObserver()
    }
    
    fileprivate func registerObserver() {
        transactionHistoryResponse.subscribe(onNext: { [weak self] response in
            self?.isLoading.accept(false)
            self?.process(response: response, onSuccess: self?.handleTransactionHistoryResponse(response:))
        }).disposed(by: disposeBag)
    }
    
    fileprivate func handleTransactionHistoryResponse(response networkResponse: NetworkResponse) {
        let json = JSON(networkResponse.response!)
        printIfDebug("transaction history: \(json)")
        if json["status"].boolValue == true {
            total = json["data"]["total"].intValue
            var transactions: [TransactionHistoryModel] = []
            if let tempTransactions = transactionHistories.value, tempTransactions.count > 0 {
                printIfDebug(tempTransactions.count)
                transactions = tempTransactions
            }
            for object in json["data"]["transactions"].arrayValue {
                transactions.append(TransactionHistoryModel(object))
            }
            printIfDebug(transactions.count)
            transactionHistories.accept(transactions)
        } else {
            transactionHistories.accept([])
        }
    }
        
    func loadTransactionHistory() {
        if offset <= total || transactionHistories.value == nil {
            isLoading.accept(true)
            let params: [String: String] = [
                "offset": offset.string,
                "limit": HistoryTransactionViewModel.limit.string
            ]
            HistoryTransactionDataSource.getTransactionHistory(params: params, networkRespose: transactionHistoryResponse)
        }
    }
}