Swift

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. Swift

func chilkatTest() {
    var success: Bool = false

    // Replace with your actual Finnhub API key.
    var apiKey: String? = "YOUR_FINNHUB_API_KEY"
    var symbol: String? = "AAPL"

    let http = CkoHttp()!

    // This is the URL without params.
    var urlWithoutParams: String? = "https://finnhub.io/api/v1/quote"

    let req = CkoHttpRequest()!

    // Add params that will be sent in the URL.
    req.addParam(name: "symbol", value: symbol)
    req.addParam(name: "token", value: apiKey)

    req.httpVerb = "GET"

    // Send the request to get the JSON response.
    let resp = CkoHttpResponse()!
    success = http.httpReq(url: urlWithoutParams, request: req, response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    let json = CkoJsonObject()!
    resp.getBodyJson(json: json)

    var statusCode: Int = resp.statusCode.intValue
    print("response status code: \(statusCode)")

    json.emitCompact = false
    print("\(json.emit()!)")

    // Sample result:

    // {
    //   "c": 248.8,
    //   "d": -4.09,
    //   "dp": -1.6173,
    //   "h": 255.493,
    //   "l": 248.07,
    //   "o": 253.9,
    //   "pc": 252.89,
    //   "t": 1774641600
    // }

    if statusCode == 200 {
        // Add the symbol to the top of the result.
        json.addString(at: 0, name: "symbol", value: symbol)

        // Rename members for clarification.
        json.rename(oldName: "c", newName: "currentPrice")
        json.rename(oldName: "d", newName: "change")
        json.rename(oldName: "dp", newName: "percentChange")
        json.rename(oldName: "h", newName: "high")
        json.rename(oldName: "l", newName: "low")
        json.rename(oldName: "o", newName: "open")
        json.rename(oldName: "pc", newName: "prevClose")
        json.rename(oldName: "t", newName: "unixTime")

        print("\(json.emit()!)")

    }
    else {
        print("Failed")
    }


}