// Copyright (C) 2016 Inigo Valentin
//
// This file is part of the Gasteizko Margolariak IOS app.
//
// The Gasteizko Margolariak IOS app is free software: you can
// redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// The Gasteizko Margolariak IOS app is distributed in the
// hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with the Gasteizko Margolariak IOS app.
// If not, see .
import Foundation
import CoreData
import UIKit
import UserNotifications
/**
Class to fetch notifications from the server.
*/
class Notifications{
/**
Starts the sync process.
Always asynchronously.
*/
init(){
let url = buildUrl();
notification(url: url)
}
/**
Builds the URL to perform the sync against.
:returns: The URL.
*/
func buildUrl() -> URL{
let url = URL(string: "https://margolariak.com/API/v1/notifications.php")
return url!
}
/**
Performs an asynchronous request.
It fetches the info from the server and stores as Core Data
:param: url The url to sync.
*/
func notification(url: URL){
NSLog(":NOTIFICATION:LOG: Notification fetch started.")
//Synchronously get data
let task = URLSession.shared.dataTask(with: url) { data, response, error in
guard error == nil else {
NSLog(":NOTIFICATION:ERROR: Unknown error.")
return
}
guard let data = data else {
NSLog(":NOTIFICATION:ERROR: Data is empty.")
return
}
let strData: String = String(data:data, encoding: String.Encoding.utf8)!
if strData.length > 0{
NSLog(":NOTIFICATION:LOG: Notifications received.")
let dataNotification: [String] = self.getData(data: strData)
self.saveNotifications(entries: dataNotification)
}
}
task.resume()
}
/**
Extracts notifications from the raw data received.
:param: param Received data in JSON format.
:return: Array of strings containing the notifications.
*/
func getData(data: String) -> [String]{
//Separate the entries
var entries : [String] = data.components(separatedBy: "},{")
//Modify the first and the last one to remove bracers
entries[0] = entries[0].subStr(start: 1, end: entries[0].length - 1)
entries[entries.count - 1] = entries[entries.count - 1].subStr(start: 0, end: entries[entries.count - 1].length - 2)
//Return the array
return entries
}
/**
Saves the data in the table.
:param: entries Array of strings containing the rows of the table, in JSON format.
*/
func saveNotifications(entries : [String]){
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone.ReferenceType.local
//Set up context
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
context.persistentStoreCoordinator = appDelegate.persistentStoreCoordinator
let entity = NSEntityDescription.entity(forEntityName: "Notification", in: context)
var row: NSManagedObject
//Loop new entries
for entry in entries{
//Get id
var str = entry
let id: Int = Int(str.subStr(start : str.indexOf(target : "\"id\":")! + 6, end : str.indexOf(target : ",\"")! - 2))!
//Get title_es
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let title_es: String = str.subStr(start : str.indexOf(target : "\"title_es\":")! + 12, end : str.indexOf(target : ",\"")! - 2)
//Get title_en
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let title_en: String = str.subStr(start : str.indexOf(target : "\"title_en\":")! + 12, end : str.indexOf(target : ",\"")! - 2)
//Get title_eu
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let title_eu: String = str.subStr(start : str.indexOf(target : "\"title_eu\":")! + 12, end : str.indexOf(target : ",\"")! - 2)
//Get text_es
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let text_es: String = str.subStr(start : str.indexOf(target : "\"text_es\":")! + 11, end : str.indexOf(target : ",\"")! - 2)
//Get text_en
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let text_en: String = str.subStr(start : str.indexOf(target : "\"text_en\":")! + 11, end : str.indexOf(target : ",\"")! - 2)
//Get text_eu
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let text_eu: String = str.subStr(start : str.indexOf(target : "\"text_eu\":")! + 11, end: str.indexOf(target : ",\"")! - 2)
//Get dtime
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let dtime = dateFormatter.date(from : str.subStr(start : str.indexOf(target : "\"dtime\":")! + 9, end : str.indexOf(target : ",\"")! - 2))!
//Get GM
str = str.subStr(start : str.indexOf(target : ",\"")! + 1, end : str.length - 1)
let gm: Int = Int(str.subStr(start : str.indexOf(target : "\"gm\":")! + 6, end : str.indexOf(target : ",\"")! - 2))!
// Not getting seen
// Save & show
let fetchRequest: NSFetchRequest = Notification.fetchRequest()
fetchRequest.predicate = NSPredicate(format: "id == %i", id)
fetchRequest.fetchLimit = 1
do{
let searchResults = try context.fetch(fetchRequest)
if (searchResults.count == 0){
row = NSManagedObject(entity: entity!, insertInto: context)
row.setValue(id, forKey: "id")
row.setValue(title_es, forKey: "title_es")
row.setValue(title_en, forKey: "title_en")
row.setValue(title_eu, forKey: "title_eu")
row.setValue(text_es, forKey: "text_es")
row.setValue(text_en, forKey: "text_en")
row.setValue(text_eu, forKey: "text_eu")
row.setValue(dtime, forKey: "dtime")
row.setValue(gm, forKey: "gm")
do {
try context.save()
if #available(iOS 10.0, *) {
let content = UNMutableNotificationContent()
let lang = getLanguage()
switch lang{
case "en":
content.title = title_en
content.body = text_en
break;
case "eu":
content.title = title_eu
content.body = text_eu
break;
default:
content.title = title_es
content.body = text_es
}
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 1, repeats: false)
let request = UNNotificationRequest.init(identifier: "Not\(id)", content: content, trigger: trigger)
// Schedule the notification.
let center = UNUserNotificationCenter.current()
center.add(request) {
(error) in
NSLog(":NOTIFICATION:ERROR: Error showing notification \(String(describing: error))")
}
}
else {
NSLog(":NOTIFICATION:ERROR: Can't send notifications in iOS versions lower than 10. Not showing notification \(id)")
}
}
catch let error as NSError {
NSLog(":NOTIFICATION:ERROR: Could not save notification with id \(id): \(error), \(error.userInfo).")
}
catch {
NSLog(":NOTIFICATION:ERROR: Could not save notification with id \(id).")
}
}
}
catch {
NSLog(":NOTIFICATION:ERROR: Error getting notifications: \(error)")
}
}
}
/**
Gets the device language. The only recognized languages are Spanish, English and Basque.
If the device has another language, Spanish will be selected by default.
:return: Two-letter language code.}
*/
func getLanguage() -> String{
let pre = NSLocale.preferredLanguages[0].subStr(start: 0, end: 1)
if(pre == "es" || pre == "en" || pre == "eu"){
return pre
}
else{
return "es"
}
}
}