//
//  NotificationViewController.swift
//  Service Provider
//
//  Created by Mac HD on 01/02/2023.
//

import UIKit
import Firebase
import FirebaseFirestore
import FirebaseAuth
import SVProgressHUD

class NotificationViewController: UIViewController {

    @IBOutlet weak var notificationsTableView: UITableView!
    
    @IBOutlet weak var noNotificationsView: UIImageView!
    
    var notifications = [NotificationModel]()
    var arrangedNotifications = [NotificationModel]()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        notificationsTableView.delegate = self
        notificationsTableView.dataSource = self
        
        getNotifications()
    }
    
    func getNotifications() {
        
        let uid = Auth.auth().currentUser?.uid ?? ""
        
        let db = Firestore.firestore()
        db.collection("Notifications")
            .whereField("receiverId", isEqualTo: uid)
            .order(by: "timestamp", descending: true).addSnapshotListener { querySnapShot, error in
                if error != nil {
                    print("Error : ", error as Any)
                    return
                }
                
                self.notifications.removeAll()
                
                var previousDate = ""
                var count = 0
                
                for document in querySnapShot!.documents {
                    
                    count += 1
                    var n = NotificationModel()
                        
                    let date = document.get("timestamp") as? Int ?? 0
                    let d = String(date)
                    let newDate = self.getDateTime(d, "d MMM, yyyy")
                        
                        if newDate != previousDate {
                            let notification = NotificationModel()
                            notification.date = newDate
                           previousDate = newDate
                           self.notifications.append(notification)
                            
                            n.date = ""
                            n.title = document.get("title") as? String ?? ""
                            n.body = document.get("body") as? String ?? ""
                           // notification.time = document.documentID
                            self.notifications.append(n)
                        } else {
                            n.title = document.get("title") as? String ?? ""
                            n.body = document.get("body") as? String ?? ""
                            self.notifications.append(n)
                        }
                }
                if self.notifications.count == 0 {
                    self.noNotificationsView.isHidden = false
                } else {
                    self.noNotificationsView.isHidden = true
                }
                print("an count3 : ", self.notifications.count)
                self.notificationsTableView.reloadData()
                
            }
    }
}


//MARK: - TableView

extension NotificationViewController: UITableViewDelegate, UITableViewDataSource {
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        print("an count453 : ", arrangedNotifications.count)
        return notifications.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let notification = notifications[indexPath.row]
        let notificationDate = notifications[indexPath.row].date
    
        print("n date :", notificationDate)
       
        if notification.date == "" {
            let cell = notificationsTableView.dequeueReusableCell(withIdentifier: "NotificationTableViewCell", for: indexPath) as! NotificationTableViewCell
            cell.selectionStyle = .none
            cell.title.text = notification.title
            cell.bodyLabel.text = notification.body
//            cell.notificationLabel.sizeToFit()
            print("doc34 id : ", notification.date)
            return cell
        } else {
            let cell = notificationsTableView.dequeueReusableCell(withIdentifier: "DateTableViewCell", for: indexPath) as! DateTableViewCell
            cell.dateLabel.text = notification.date
            cell.selectionStyle = .none
            print("date423 : ", notification.date)
            return cell
        }
    }
}