Custom API to provide LineChart data

chartInfoAPI.php

<?php
if (!defined('sugarEntry') || !sugarEntry) {
    die('Not A Valid Entry Point');
}
require_once 'clients/base/api/ModuleApi.php';

class chartInfoAPI extends ModuleApi
{
    public function registerApiRest()
    {
        return array(
            'webhook' => array(
                'reqType' => 'GET',
                'path' => array('Accounts', 'get_line_chart_data'),
                'pathVars' => array('module', 'action'),
                'method' => 'getLineChartInfo',
                'shortHelp' => 'This endpoint retrieves line chart information in the proper format',
                'longHelp' => '',
            ),
        );
    }

    /**
     * This method generates data for a line chart example and returns it in the following LineChart format:
     * array(
     *     array(
     *         'data' => array(
     *             array(
     *                 'key' => "Data set the first", // Title of this data set
     *                 'values' => array(
     *                     array(
     *                         'x' => {some number},
     *                         'y' => {some other number},
     *                     ),
     *                     ...
     *                 ),
     *                 'color' => "#ff0000", // Any color you want, of course
     *             ),
     *             ...
     *         ),
     *         'properties' => array(
     *             'title' => "Title of this chart",
     *         ),
     *     ),
     *     ...
     * )
     */
    public function getLineChartInfo($api, $args) {
        $out_data_arr = array();

        $num_charts = 3; // Total number of charts to display
        $num_lines = 2; // Number of lines per chart to display
        $num_data_points = 5; // Number of data points per line to display

        $color_map = array(
            'silver',
            'gray',
            'black',
            'red',
            'maroon',
            'yellow',
            'olive',
            'lime',
            'green',
            'aqua',
            'teal',
            'blue',
            'navy',
            'fuchsia',
            'purple',
        );

        for ($i = 0; $i < $num_charts; $i++) {
            $tmp_chart_arr = array(
                'data' => array(),
                'properties' => array(
                    'title' => "Chart #" . ($i + 1),
                ),
            );
            for ($j = 0; $j < $num_lines; $j++) {
                // Pick a color for the line
                $line_color = $color_map[rand(0, count($color_map) - 1)];
                $tmp_line_arr = array(
                    'key' => ucfirst($line_color) . " Data",
                    'values' => array(),
                    'color' => $line_color,
                );
                for ($k = 1; $k <= $num_data_points; $k++) {
                    $tmp_data_point = array(
                        'x' => $k,
                        'y' => rand(0, 10),
                    );
                    $tmp_line_arr['values'][] = $tmp_data_point;
                }
                $tmp_chart_arr['data'][] = $tmp_line_arr;
            }
            $out_data_arr[] = $tmp_chart_arr;
        }
        
        return $out_data_arr;
    }
}