/**
* Transform data to pie chart specific format
*
* @param DataInterface $data
* @param array $chartOptions
* Format of $chartOptions variable:
* array(
* "name" => "chart_name",
* "data_schema" => array(
* "label" => array("field_name" => "name", "label" => "oro.xxx.firstName"),
* "value" => array("field_name" => "salary", "label" => "oro.xxx.salary"),
* ),
* "settings" => array(
* "fraction_input_data_field" => "value"
* "fraction_output_data_field" => "fraction"
* ),
* )
*
* @return DataInterface
*/
public function transform(DataInterface $data, array $chartOptions)
{
$inputKey = $chartOptions['settings'][self::FRACTION_INPUT_DATA_FIELD];
$outputKey = $chartOptions['settings'][self::FRACTION_OUTPUT_DATA_FIELD];
$inputArrayData = $data->toArray();
$total = 0;
foreach ($inputArrayData as $row) {
$total += $row[$inputKey];
}
$resultArray = array();
foreach ($inputArrayData as $row) {
$row[$outputKey] = $total > 0 ? round($row[$inputKey] / $total, 4) : 1;
$resultArray[] = $row;
}
return new ArrayData($resultArray);
}
/**
* @return array
*/
public function toArray()
{
$result = array();
foreach ($this->sourceData->toArray() as $sourceKey => $sourceItem) {
if ($this->hasNestedRecords($sourceItem)) {
foreach ($sourceItem as $nestedItem) {
$record = array();
foreach ($this->mapping as $name => $fieldName) {
$record[$name] = $this->getValue($nestedItem, $fieldName);
}
$result[$sourceKey][] = $record;
}
} else {
$record = array();
foreach ($this->mapping as $name => $fieldName) {
$record[$name] = $this->getValue($sourceItem, $fieldName);
}
$result[] = $record;
}
}
return $result;
}
/**
* @param DataInterface $data
* @param array $chartOptions
*
* @throws \InvalidArgumentException
*/
protected function initialize(DataInterface $data, array $chartOptions)
{
if (empty($chartOptions['default_settings']['groupingOption'])) {
throw new \InvalidArgumentException('Options "groupingOption" is not set');
}
/** @var MappedData $data */
$this->sourceData = $data->getSourceData()->toArray();
$this->labelKey = $chartOptions['data_schema']['label']['field_name'];
$this->valueKey = $chartOptions['data_schema']['value']['field_name'];
$this->groupingOption = $chartOptions['default_settings']['groupingOption'];
if (empty($chartOptions['default_settings']['period'])) {
throw new \InvalidArgumentException('Options "period" is not set');
}
$this->period = $chartOptions['default_settings']['period'];
$now = new \DateTime();
foreach ($this->dateFormatMap as $key => $format) {
$this->dateFormatSize[$key] = strlen($now->format($format));
}
}
/**
* @dataProvider transformDataProvider
*/
public function testTransform(DataInterface $data, array $chartOptions, DataInterface $expectedData)
{
$this->assertEquals($expectedData->toArray(), $this->transformer->transform($data, $chartOptions)->toArray());
}
/**
* Render chart
*
* @return string
*/
public function render()
{
$context = $this->vars;
$context['data'] = $this->data->toArray();
return $this->twig->render($this->template, $context);
}