Swift

Firebase PUT - Writing Data

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Demonstrates how to PUT new data to a Firebase JSON database. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

Swift

func chilkatTest() {
    var success: Bool = false

    // Demonstrates how to PUT new data to a Firebase JSON database.

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example assumes a JWT authentication token, if required, has been previously obtained.
    // See Get Firebase Access Token from JSON Service Account Private Key for sample code.

    // Load the previously obtained Firebase access token into a string.
    let fac = CkoFileAccess()!
    var accessToken: String? = fac.readEntireTextFile(path: "qa_data/tokens/firebaseToken.txt", charset: "utf-8")
    if fac.lastMethodSuccess != true {
        print("\(fac.lastErrorText!)")
        return
    }

    let rest = CkoRest()!

    // Make the initial connection (without sending a request yet).
    // Once connected, any number of requests may be sent.  It is not necessary to explicitly
    // call Connect before each request.  
    success = rest.connect(hostname: "chilkat.firebaseio.com", port: 443, tls: true, autoReconnect: true)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    let authGoogle = CkoAuthGoogle()!
    authGoogle.accessToken = accessToken
    rest.setAuthGoogle(authProvider: authGoogle)

    // Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
    // This data is publicly readable, but not writable.  You'll need to 
    // run against your own database..

    // Generate a new push ID.
    let prng = CkoPrng()!
    var pushId: String? = prng.firebasePushId()

    // We're going to add a new pig with just the name.
    let pigRecord = CkoJsonObject()!
    pigRecord.appendString(name: "name", value: "William")

    let path = CkoStringBuilder()!
    path.append(value: "/pig-rescue/animal/")
    path.append(value: pushId)
    path.append(value: ".json")

    // The string content of the last arg passed is  {"name":"William"} 
    var jsonResponse: String? = rest.fullRequestString(httpVerb: "PUT", uriPath: path.getAsString(), bodyText: pigRecord.emit())
    if rest.lastMethodSuccess != true {
        // Something happened in the communications (either no request was sent, or no response was received.
        // (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
        // and then receive the response in another call.)
        print("\(rest.lastErrorText!)")
        return
    }

    // Check the response status code.   A 200 response status indicates success.
    if rest.responseStatusCode.intValue != 200 {
        print("\(rest.responseStatusText!)")
        print("\(jsonResponse!)")
        print("Failed.")
        return
    }

    print("\(jsonResponse!)")
    print("Success.")

    // Note: In many of the Chilkat examples, you may notice strange ways
    // of doing something that should be simpler and shorter.  For example,
    // building the path (above) could've been written differently,
    // with some simple string concatenation.
    // 
    // The reason is that the Chilkat examples are written in a 
    // proprietary "example code" scripting language,
    // and then automatically generated to each of the different programming
    // languages you see on example-code.com.  The code generation is
    // limited in what it can do.  For example, string concatentation
    // is not yet a feature of the "example code" scripting language (as of May 2016), 
    // and therefore you won't see the use of a programming language's string
    // concatentation operators in any example.  
    // 

}