djid_sirani_ios/Sirani/View/DaftarRhu/DaftarRhuPresenter.swift

//
//  DaftarRhuPresenter.swift
//  Sirani
//
//  Created by Anhar Solehudin on 27/04/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import Foundation
import SwiftyJSON

class DaftarRhuPresenter {
    
    private let siraniApiServices: SiraniApiServices
    weak private var view: DaftarRhuViewDelegate?
    
    init(siraniApiServices: SiraniApiServices) {
        self.siraniApiServices = siraniApiServices
    }
    
    func attachView(view: DaftarRhuViewDelegate?) {
        self.view = view
    }
    
    func detachView() {
        self.view = nil
    }
    
    func loadData(cursor: Int, prev: Int, jenis: String, columns: String, search: String) {
        self.view?.hideNoDataLayout()
        self.view?.showLoading()
        
        // TODO : Get Id from User Sessions
        var custId = 0
        var roleId = ""
        var userId = 0
        
        let savedCustId = UserState.instance.getCustId()
        if savedCustId > 0 {
            custId = savedCustId
        }
        
        let savedRoleId = UserState.instance.getRoleId()
        if !savedRoleId.isEmpty {
            roleId = savedRoleId
        }
        
        let savedUserId = UserState.instance.getUserId()
        if savedUserId > 0 {
            userId = savedUserId
        }
        
        var dataList = [DaftarRhu]()
        siraniApiServices.postToGetDaftarRhu(cursor: cursor, prev: prev, jenis: jenis, columns: columns, search: search, cust_id: custId, user_id: userId, role_id: roleId).responseJSON { response in
            if response.error == nil {
                guard let data = response.data else { return }
                if let json = try? JSON(data: data) {
                    if let data = json["data"].array {
                        if data.count > 0 {
                            for item in data {
                                let daftarRhu = DaftarRhu(
                                    apl_id: item["apl_id"].int,
                                    plg_id: item["plg_id"].int,
                                    rhu_no: item["rhu_no"].stringValue,
                                    upload_file_date_convert: item["upload_file_date_convert"].stringValue,
                                    jmleval: item["jmleval"].intValue,
                                    custs: item["custs"].string,
                                    eqp_name: item["eqp_name"].stringValue,
                                    models: item["models"].stringValue,
                                    merk: item["merk"].stringValue,
                                    balai: item["balai"].stringValue,
                                    tab_desc: item["tab_desc"].string,
                                    file_lhu: item["file_lhu"].stringValue,
                                    file_emc: item["file_emc"].stringValue
                                )
                                
                                dataList.append(daftarRhu)
                            }
                            self.setDataList(dataList: dataList)
                        } else {
                            if cursor > 0 {
                                self.setDataList(dataList: dataList)
                            } else {
                                self.showNoData()
                            }
                        }
                    } else {
                        self.showNoData()
                    }
                } else {
                    self.showNoData()
                }
            } else {
                self.showNoData()
            }
        }
    }
    
    func downloadFile(urlWeb: String, filename: String) {
        self.view?.showLoading()
        
        siraniApiServices.downloadFile(urlWeb: urlWeb, filename: filename).responseData { response in
            if let urlFile = response.fileURL {
                self.onDownloadSuccess(urlFile: urlFile)
            } else {
                self.onDownloadFailed()
            }
        }
        
    }
    
    // other functions
    private func setDataList(dataList: [DaftarRhu]) {
        self.view?.setDataList(dataList: dataList)
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.6) {
            self.view?.hideLoading()
        }
    }
    
    private func showNoData() {
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            self.view?.showNoDataLayout()
            self.view?.hideLoading()
        }
    }
    
    private func onDownloadSuccess(urlFile: URL) {
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            self.view?.onDownloadSuccess(urlFile: urlFile)
            self.view?.hideLoading()
        }
    }
    
    private func onDownloadFailed() {
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            self.view?.onDownloadFailed()
            self.view?.hideLoading()
        }
    }
}