# CodableFirebase
Use [Codable](https://developer.apple.com/documentation/swift/codable) with [Firebase](https://firebase.google.com)

[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) 
[![Build Status](https://travis-ci.org/alickbass/CodableFirebase.svg?branch=master)](https://travis-ci.org/alickbass/CodableFirebase)
[![codecov](https://codecov.io/gh/alickbass/CodableFirebase/branch/master/graph/badge.svg)](https://codecov.io/gh/alickbass/CodableFirebase)

## Overview

This library helps you to use your custom type that conform to `Codable` protocol with Firebase. Here's an example of model:

```swift
struct Model: Codable {
    let stringExample: String
    let booleanExample: Bool
    let numberExample: Double
    let dateExample: Date
    let arrayExample: [String]
    let nullExample: Int?
    let objectExample: [String: String]
}
```

### Firebase Database usage

This is how you would use the library with [Firebase Realtime Database](https://firebase.google.com/products/realtime-database/):

```swift
import Firebase
import CodableFirebase

let model: Model // here you will create an instance of Model
let data = try! FirebaseEncoder().encode(model)

Database.database().reference().child("model").setValue(data)
```

And here is how you would read the same value from [Firebase Realtime Database](https://firebase.google.com/products/realtime-database/):

```swift
Database.database().reference().child("model").observeSingleEvent(of: .value, with: { (snapshot) in
    guard let value = snapshot.value else { return }
    do {
        let model = try FirebaseDecoder().decode(Model.self, from: value)
        print(model)
    } catch let error {
        print(error)
    }
})
```

### Firestore usage

And this is how you would encode it with [Firebase Firestore](https://firebase.google.com/products/firestore/):

```swift
import Firebase
import CodableFirebase

let model: Model // here you will create an instance of Model
let docData = try! FirestoreEncoder().encode(model)
Firestore.firestore().collection("data").document("one").setData(docData) { err in
    if let err = err {
        print("Error writing document: \(err)")
    } else {
        print("Document successfully written!")
    }
}
```

And this is how you would decode the same model with [Firebase Firestore](https://firebase.google.com/products/firestore/):

```swift
Firestore.firestore().collection("data").document("one").getDocument { (document, error) in
    if let document = document {
        let model = try! FirestoreDecoder().decode(Model.self, from: document.data())
        print("Model: \(model)")
    } else {
        print("Document does not exist")
    }
}
```