//
//  AgentViewModel.swift
//  GMERemittance
//
//  Created by FMI-12 on 2/5/18.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import Foundation
import SwiftyJSON

class AgentViewModel: ModelExtension {
    
    var agentLocationAvailable: Box<Bool?> = Box(nil)
    var agentCountryListAvailable: Box<Bool?> = Box(nil)
    var agentLocationBool: Box<Bool?> = Box(nil)
    
    var agentConnectionTimeOut: Box<Bool?> = Box(nil)
    
    let user_id = UserDefaults.standard.object(forKey: "com.gmeremit.username") as? String
    
    private var agentArray = [AgentModel]()
    private var agentCountryList = [AgentCountryList]()
    private var agentNameArray = [String]()
    
    /**
     Fetch agent location
     
     - Parameter countryId: each country is provided with unique id
     - Parameter city: name of city
     */
    func fetchAgentLocation(countryId: String, city: String) {
        let countryIdLocal = countryId
        let cityLocal = city
        if !Reachability.isConnectedToNetwork() {
            self.internetConnection.value = false
        } else {
            
            RestApiMananger.sharedInstance.getAgentLocationDetails(countryId: countryId, city: city) { result in
                
                switch result {
                case let .success(agentJSON):
                    self.agentArray.removeAll()
                    self.agentNameArray.removeAll()
                    guard agentJSON.count > 0 else {
                        self.agentLocationAvailable.value = true
                        return
                    }
                    if agentJSON.count > 0 {
                        for i in 0 ... (agentJSON.count-1) {
                            do {
                                let agent = try JSONDecoder().decode(AgentModel.self, from: agentJSON[i].rawData())
                                self.agentArray.append(agent)
                            } catch let err {
                                self.setErrorMessage(message: err as! String)
                                self.agentLocationAvailable.value = false
                            }
                        }
                    }
                    
                    self.agentArray = self.agentArray.sorted(by: { $0.name.lowercased() < $1.name.lowercased() })
                    if self.agentArray.count > 0{
                        for i in 0...(self.agentArray.count - 1) {
                            self.agentNameArray.append(self.agentArray[i].name)
                        }
                    }
                    self.agentLocationAvailable.value = true
                    
                case let .failure(errorJSON):
                    self.setErrorMessage(message: errorJSON["message"].stringValue)
                    self.agentLocationAvailable.value = false
                    
                case .updateAccessCode:
                        RestApiMananger.sharedInstance.updateAccessCode(userId: self.user_id!, password: self.getLoginPassword()) {
                            result in
                            if result != "Error"{
                                let uuid = RestApiMananger.sharedInstance.getUUID()
                                UserDefaults.standard.set((result + ":" + uuid).toBase64(), forKey: "com.gmeremit.accessCode")
                                self.fetchAgentLocation(countryId: countryIdLocal, city: cityLocal)
                            }
                        }
                    
                case .logOutUser():
                    RestApiMananger.sharedInstance.cancelExistingNetworkCalls()
                    self.anotherLogin.value = true
                case .timeOut:
                    self.agentConnectionTimeOut.value = false
                }
            }
        }
    }
    
    /**
     Fetch list of country
     */
    func fetchListOfCountry(){
        if !Reachability.isConnectedToNetwork() {
            self.internetConnection.value = false
        }else{
            RestApiMananger.sharedInstance.fetchCountryList() { result in
                switch result {
                case let .success(countryListJSON):
                    self.agentCountryList.removeAll()
                    guard countryListJSON.count > 0 else {
                        return
                    }
                    
                    self.setCountryListDataInObject(countryList: countryListJSON)
                    
                case let .failure(errorJSON):
                    self.setErrorMessage(message: errorJSON["message"].stringValue)
                    self.agentLocationAvailable.value = false
                case .updateAccessCode:                        RestApiMananger.sharedInstance.updateAccessCode(userId: self.user_id!, password: self.getLoginPassword()) {
                            result in
                            if result != "Error"{
                                let uuid = RestApiMananger.sharedInstance.getUUID()
                                UserDefaults.standard.set((result + ":" + uuid).toBase64(), forKey: "com.gmeremit.accessCode")
                                self.fetchListOfCountry()
                            }
                        }
                case .logOutUser():
                    RestApiMananger.sharedInstance.cancelExistingNetworkCalls()
                    self.anotherLogin.value = true
                case .timeOut:
                    self.agentConnectionTimeOut.value = false
                }
            }
        }
    }
    
    /**
     Set country list data in array object
     - Parameter: json array of country list
     */
    func setCountryListDataInObject(countryList: JSON){
        if countryList.count > 0{
            for i in 0 ... (countryList.count-1) {
                do {
                    let country = try JSONDecoder().decode(AgentCountryList.self, from: countryList[i].rawData())
                    agentCountryList.append(country)
                } catch let err {
                    self.setErrorMessage(message: err as! String)
                    self.agentLocationAvailable.value = false
                }
            }
        }
        self.agentCountryListAvailable.value = true
    }
    
    /**
     Fetch agent location
     
     - Parameter countryId: country is provided with a unique id
     */
    func fetchAgentLocation(countryId: String){
        let countryIdLocal = countryId
        if !Reachability.isConnectedToNetwork() {
            self.internetConnection.value = false
        } else {
            RestApiMananger.sharedInstance.fetchAgentLocation(countryId: countryId){
                result in
                switch result{
                case let .success(agentLocationJSON):
                    self.agentArray.removeAll()
                    guard agentLocationJSON.count > 0 else {
                        return
                    }
                    self.setAgentLocation(agentLocation: agentLocationJSON)
                case let .failure(errorJSON):
                    self.setErrorMessage(message: errorJSON["message"].stringValue)
                    self.agentLocationBool.value = false
                case .updateAccessCode:
                        RestApiMananger.sharedInstance.updateAccessCode(userId: self.user_id!, password: self.getLoginPassword()) {
                            result in
                            if result != "Error"{
                                let uuid = RestApiMananger.sharedInstance.getUUID()
                                UserDefaults.standard.set((result + ":" + uuid).toBase64(), forKey: "com.gmeremit.accessCode")
                                self.fetchAgentLocation(countryId: countryIdLocal)
                            }
                        }
                case .logOutUser():
                    RestApiMananger.sharedInstance.cancelExistingNetworkCalls()
                    self.anotherLogin.value = true
                case .timeOut:
                    self.agentConnectionTimeOut.value = false
                }
            }
        }
    }
    
    /**
     Set json array in model object
     
     - Parameter agentLocation: json array of agent location data
     */
    func setAgentLocation(agentLocation: JSON){
        if agentLocation.count > 0 {
            for i in 0 ... (agentLocation.count-1) {
                do {
                    let agentLocation = try JSONDecoder().decode(AgentModel.self, from: agentLocation[i].rawData())
                    agentArray.append(agentLocation)
                } catch let err {
                    self.setErrorMessage(message: err as! String)
                    self.agentLocationBool.value = false
                }
            }
        }
        self.agentLocationBool.value = true
    }
    
    /**
     - returns: array of agent model
     */
    func getAgentLocation() -> [AgentModel]{
        return agentArray
    }
    
    /**
     - returns: array of agent country list
     */
    func getCountryList() -> [AgentCountryList]{
        return agentCountryList
    }
    
    /**
     - returns: array of agent model
     */
    func getAgentArray() -> [AgentModel] {
        return agentArray
    }
    
    /**
     - returns: array of agent name
     */
    func getAgentNamesArray() -> [String] {
        return agentNameArray
    }
    
    /**
     - returns: agent array total count
     */
    func getAgentCount() -> Int {
        return agentArray.count
    }
    
    /**
     - Parameter index: position of name in agent array
     - returns: name
     */
    func getAgentName(index: Int) -> String {
        if let name = agentArray[index].name {
            return name
        }  else {
            return "N/A"
        }
    }
    
    /**
     - Parameter index: position of address in agent array
     - returns: address
     */
    func getAgentAddress(index: Int) -> String {
        if  let address = agentArray[index].address {
            return address
        }
        return ""
    }
    
    /**
     - Parameter index: position of phone in agent array
     - returns: phone
     */
    func getAgentPhone(index: Int) -> String {
        if let phone = agentArray[index].phone {
            return phone
        }
        else {
            return "N/A"
        }
    }
    
    /**
     - Parameter index: position of latitude in agent array
     - returns: latitude
     */
    func getAgentLatitude(index:Int) -> String {
        if let latitude = agentArray[index].latitude {
            return latitude
        } else {
            return "0"
        }
    }
    
    /**
     - Parameter index: position of longitude in agent array
     - returns: longitude
     */
    func getAgentLongitude(index:Int) -> String {
        if let longitude = agentArray[index].longitude {
            return longitude
        } else {
            return "0"
        }
    }
}