117 lines
4.6 KiB
Swift
117 lines
4.6 KiB
Swift
//
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// ContactsViewModel.swift
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// nirvana-ios
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//
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// Created by Arjun Patel on 12/15/21.
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//
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import Foundation
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import Contacts
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import SwiftUI
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class ContactsViewModel : ObservableObject {
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@Published var showPermissionAlert = false
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@Published var contacts: [String: ContactsViewModelContact] = [:]
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private var firestoreService = FirestoreService()
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let store: CNContactStore = CNContactStore()
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let keys: [CNKeyDescriptor] = [CNContactImageDataKey as CNKeyDescriptor,
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CNContactPhoneNumbersKey as CNKeyDescriptor,
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CNContactEmailAddressesKey as CNKeyDescriptor,
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CNContactFormatter.descriptorForRequiredKeys(for: .fullName)]
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init() {
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self.fetchContacts()
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}
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func openSettings() {
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guard let settingsURL = URL(string: UIApplication.openSettingsURLString) else { return }
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if UIApplication.shared.canOpenURL(settingsURL) { UIApplication.shared.open(settingsURL)}
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}
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func requestAccess() {
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store.requestAccess(for: .contacts) {(granted, error) in
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// TODO: do something useful with completionHandler
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return
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}
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}
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func fetchContacts() {
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let authStatus = CNContactStore.authorizationStatus(for: .contacts)
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if authStatus == .notDetermined {
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requestAccess()
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} else if authStatus == .restricted {
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// TODO: prompt user that app is useless without access to contacts
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self.showPermissionAlert = true
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}
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let fetchRequest = CNContactFetchRequest(keysToFetch: keys)
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fetchRequest.sortOrder = .userDefault
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do {
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try store.enumerateContacts(with: fetchRequest) {(contact, stop) in
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// only checking if american number or not for now
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var cnPhoneNumber = contact.phoneNumbers.first?.value.stringValue
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let contactDisplayName = contact.givenName + " " + contact.familyName
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// strip out nondigits
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// add or keep country code
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// TODO: take out hard coding to US country code
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var formattedNumber = cnPhoneNumber?.digits.suffix(10)
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// only show contacts if they have a phone number
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if formattedNumber != nil && formattedNumber?.count ?? 0 > 9 {
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formattedNumber = "+1" + formattedNumber! // adding country code
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let contactNumber = String(formattedNumber!)
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var contactVm = ContactsViewModelContact(cnName: contactDisplayName, cnPhoneNumber: contactNumber, sortingProp: contactDisplayName)
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// check if the contact is an existing user by phone number
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self.firestoreService.getUserByPhoneNumber(phoneNumber: contactNumber) {[weak self] returnedUser in
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DispatchQueue.main.async {
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if returnedUser == nil {
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// do nothing, keep contactsVm object user property nil
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contactVm.isExisting = false
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contactVm.sortingProp = contactVm.cnName
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} else {
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// adding user details if this contact is existing user
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contactVm.sortingProp = "!" // adding for sorting purposes
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contactVm.user = returnedUser
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contactVm.isExisting = true
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print("existing user: \(contactVm.cnName)")
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}
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self?.contacts[contactVm.sortingProp] = contactVm
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}
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}
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}
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}
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} catch {
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print("Unable to fetch contacts. \(error)")
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}
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}
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func addOrActivateFriendToCircle(userId: String, friendId: String) {
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// setting timestamps to nil to make sure that new server timestamp is set
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var userFriend = UserFriends(userId: userId, friendId: friendId, isActive: true, lastUpdatedTimestamp: nil, createdTimestamp: nil)
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self.firestoreService.createOrUpdateUserFriends(userFriend: userFriend) {[weak self] res in
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print(res)
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}
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}
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}
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struct ContactsViewModelContact : Identifiable {
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var id : String = UUID().uuidString
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var user: User?
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var cnName: String
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var cnPhoneNumber: String
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var isExisting: Bool = false
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var sortingProp: String
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}
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