(Swift 2) Bitfinex v2 REST Submit Order

Submit an order.

For more information, see https://docs.bitfinex.com/reference#rest-auth-submit-order

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.

    let http = CkoHttp()
    var success: Bool

    let crypt = CkoCrypt2()

    var apiPath: String? = "v2/auth/w/order/submit"
    var apiKey: String? = "MY_API_KEY"
    var apiSecret: String? = "MY_API_SECRET"

    let dt = CkoDateTime()
    dt.SetFromCurrentSystemTime()

    let sbNonce = CkoStringBuilder()
    sbNonce.Append(dt.GetAsUnixTimeStr(false))
    sbNonce.Append("000")
    var nonce: String? = sbNonce.GetAsString()

    let json = CkoJsonObject()
    json.UpdateString("type", value: "LIMIT")
    json.UpdateString("symbol", value: "tBTCUSD")
    json.UpdateString("price", value: "15")
    json.UpdateString("amount", value: "0.001")
    json.UpdateInt("flags", value: 0)
    var body: String? = json.Emit()

    let sbSignature = CkoStringBuilder()
    sbSignature.Append("/api/")
    sbSignature.Append(apiPath)
    sbSignature.Append(nonce)
    sbSignature.Append(body)

    crypt.EncodingMode = "hex_lower"
    crypt.HashAlgorithm = "sha384"
    crypt.MacAlgorithm = "hmac"
    crypt.SetMacKeyString(apiSecret)

    var sig: String? = crypt.MacStringENC(sbSignature.GetAsString())

    http.SetRequestHeader("bfx-apikey", value: apiKey)
    http.SetRequestHeader("bfx-signature", value: sig)
    http.SetRequestHeader("bfx-nonce", value: nonce)

    var resp: CkoHttpResponse? = http.PostJson2("https://api.bitfinex.com/v2/auth/w/order/submit", contentType: "application/json", jsonText: body)
    if http.LastMethodSuccess == false {
        print("\(http.LastErrorText)")
        return
    }

    print("Response body:")
    print("\(resp!.BodyStr)")

    resp = nil

}