JSON: Add ability to manipulate data before processing

[contactashish13]

ref https://secure.helpscout.net/conversation/1114000866/220789/

URL: https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo

Final json data:

{
    "Meta Data": {
        "1. Information": "Daily Prices (open, high, low, close) and Volumes",
        "2. Symbol": "MSFT",
        "3. Last Refreshed": "2020-03-20",
        "4. Output Size": "Compact",
        "5. Time Zone": "US/Eastern"
    },
    "Time Series (Daily)": {
        "2020-03-20": {
            "1. open": "146.0000",
            "2. high": "147.1000",
            "3. low": "135.8600",
            "4. close": "137.3500",
            "5. volume": "84866215"
        },
        "2020-03-19": {
            "1. open": "142.7700",
            "2. high": "150.1500",
            "3. low": "139.0000",
            "4. close": "142.7100",
            "5. volume": "85922661"
        },
    }
}

This does not generate the candlestick chart as the date is outside the root viz. Time Series (Daily). The solution is to be able to add the date to the root.

[contactashish13]

PR #670 addresses this issue.

Specifically for the URL https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo use the filter as below

add_filter( 'visualizer_json_massage_data', function( $data, $url ) {
	if ( $url === 'https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo' ) {
		$new_data = $data;
		// add 'date' to each element of the root as the first value.
		foreach ( $new_data['Time Series (Daily)'] as $date => &$date_array ) {
			$new_date_array = array();
			$new_date_array[ 'date' ] = $date;
			$date_array = array_merge( $new_date_array, $date_array );
		}
		$data = $new_data;
	}
	return $data;
}, 10, 2 );

[TheActivist]

Added the above filter to my functions.php file, but dates still aren't showing up in the root. Just getting the same five data series (open, high, low, close, volume).