Chilkat Examples

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Swift 2 Web API Examples

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effectconnect
hacienda.go.cr

 

 

 

(Swift 2) Get eBay Application Token

This example shows how to request an eBay Application token.

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // See the Ebay documentation about Access token types
    // Also see the Ebay documentation about client credentials grant flow

    let http = CkoHttp()

    // If using the sandbox, the target endpoint will be:
    // POST https://api.sandbox.ebay.com/identity/v1/oauth2/token

    // If using the production (live) system, the target endpoint will be:
    // POST https://api.ebay.com/identity/v1/oauth2/token

    // The eBay client_id and client_secret needs to be sent
    // in a Basic Authorization  request header, which has this format:
    // Authorization: Basic <B64_encoded_oauth_credentials>

    // Chilkat takes care of it.  You only need to set the Login = client_id,
    // and password = client_secret, and indicate you want "Basic" HTTP Authorization.
    http.Login = "EBAY_CLIENT_ID"
    http.Password = "EBAY_CLIENT_SECRET"
    http.BasicAuth = true

    // Let's do the following POST:

    //   HTTP method:   POST
    //   URL (Sandbox): https://api.sandbox.ebay.com/identity/v1/oauth2/token
    // 
    //   HTTP headers:
    //     Content-Type = application/x-www-form-urlencoded
    //     Authorization = Basic <B64-encoded-oauth-credentials>
    // 
    //   Request body (wrapped for readability):
    //     grant_type=client_credentials&
    //     redirect_uri=<RuName-value>&
    //     scope=<SPACE separated list of scopes>
    // 

    // Create an HttpRequest object to hold the request params.
    let req = CkoHttpRequest()
    req.HttpVerb = "POST"
    req.AddParam("grant_type", value: "client_credentials")

    // The scope query param indicates the access to be provided by the token.
    // Multiple scopes can be specified by separating each with a SPACE char.
    // See the Ebay OAuth scopes documentation

    req.AddParam("scope", value: "https://api.ebay.com/oauth/api_scope")

    // (The PostUrlEncoded method automatically sets the Content-Type header equal to "application/x-www-form-urlencoded")
    var endPoint: String? = "https://api.sandbox.ebay.com/identity/v1/oauth2/token"
    var resp: CkoHttpResponse? = http.PostUrlEncoded(endPoint, req: req)
    if http.LastMethodSuccess != true {
        print("\(http.LastErrorText)")
        return
    }

    // The response is JSON..
    let json = CkoJsonObject()
    json.Load(resp!.BodyStr)
    json.EmitCompact = false

    // If the response status code is not 200, then it failed.
    print("Response status code = \(resp!.StatusCode.intValue)")
    if resp!.StatusCode.intValue != 200 {
        print("\(json.Emit())")
        print("Failed.")
        return
    }

    // We successfully retrieved an eBay access token.
    // The actual access token string can be parsed from the JSON like this:
    var accessToken: String? = json.StringOf("access_token")

    // This application token is only valid for 7200 seconds (2 hours).  We'll want to refresh
    // it before it expires.  (There is an online example for that..)
    // For now, let's save the JSON to a file for our application to use.

    // But before doing that, let's add to the JSON an expiration timestamp
    // so we know when to refresh the token.
    let dtExpire = CkoDateTime()
    dtExpire.SetFromCurrentSystemTime()
    dtExpire.AddSeconds(json.IntOf("expires_in").intValue)
    json.AppendString("expire_time", value: dtExpire.GetAsTimestamp(false))

    // Persist the JSON to a file.
    let fac = CkoFileAccess()
    var success: Bool = fac.WriteEntireTextFile("qa_data/tokens/ebay.json", fileData: json.Emit(), charset: "utf-8", includePreamble: false)
    if success != true {
        print("\(fac.LastErrorText)")
        print("Failed to save eBay Application token to file.")
        return
    }

    print("\(json.Emit())")
    print("Success.")

    // The output of this example is:

    // 	{ 
    // 	  "access_token": "v^1.1#i^1#p^1#I^3#r^0# ... Ajp1BQhJDgAA",
    // 	  "token_type": "Application Access Token",
    // 	  "expires_in": 7200,
    // 	  "refresh_token": "N/A",
    // 	  "expire_time": "2017-04-16T14:44:20Z"
    // 	}
    // 
    // 	Success.
    // 

}

 

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