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$ ssh -i "/path/to/your/PEM-KEY.pem" ubuntu@YOUR-INSTANCE-IP

$ sudo apt-get update
$ sudo apt-get install ruby
$ sudo apt-get install wget
$ cd /home/ubuntu

lachlanagnew

var messages : [String] = []                                       //(1)

override func viewDidLoad() {
    ...
    messageListener()                                              //(2)
}
  
func messageListener(){
    Firestore.firestore().collection("messages")
      .whereField("created", isGreaterThan: Date.timeIntervalBetween1970AndReferenceDate - 1000) //(3)

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{
  "created": 1539660445.5783448,
  "message": "Hello, world!"
}

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  override func viewDidLoad() {
    ...
    statusListener()                                                  //(1)
  }

  func statusListener(){
    Firestore.firestore().collection("settings").document("device1")  //(2)
      .addSnapshotListener { documentSnapshot, error in
        guard let document = documentSnapshot else {                  //(3)
          print("Error fetching document: \(error!)")

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 @IBAction func onChangeSelection(_ sender: Any) {
    let COLORS = ["ff0000","00ff00","0000ff"]
    let selection = selectionSegment.selectedSegmentIndex
    let color = COLORS[selection]
    let ref = Firestore.firestore().collection("settings").document("device1")
    ref.setData([
      "status": selection,
      "color": color
    ]){ err in
      if let err = err {

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var db: Firestore!
  
override func viewDidLoad() {
  super.viewDidLoad()
  Auth.auth().signInAnonymously(completion: nil)
  let db = Firestore.firestore()
}

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import Firebase
import FirebaseFirestore

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$ pod install

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# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

target 'Firebase-Example' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!

  # Pods for Firebase-Example
  pod 'Firebase/Core'
  pod 'Firebase/Database'

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$ pod init