private function multiYear($mysqli, $mode, $start_year, $end_year)
{
$segmented = Db\InvestmentsApi::getInvestmentsSegmented($mysqli, $start_year, $end_year);
if (!$segmented) {
// year() is better at showing empty data
$this->year($mysqli, $start_year);
return;
}
if ($mode == self::MODE_RETIREMENT) {
$categories = array((object) array('name' => 'Non-retirement', 'key' => 'NO_RET'), (object) array('name' => 'Retirement', 'key' => 'RET'));
} else {
if ($mode == self::MODE_TAX) {
$categories = array((object) array('name' => 'Post-tax', 'key' => 'POST_TAX'), (object) array('name' => 'Pre-tax', 'key' => 'PRE_TAX'));
} else {
if ($mode == self::MODE_TAX_RET) {
$categories = array((object) array('name' => 'Non-retirement funds', 'key' => 'NO_RET'), (object) array('name' => 'Pre-tax retirement funds', 'key' => 'PRE_TAX'), (object) array('name' => 'Post-tax retirement funds', 'key' => 'POST_TAX'));
} else {
$categories = Db\InvestmentsApi::getCategories($mysqli);
}
}
}
$cdata = $this->getBaseData($categories);
// compute date range
$start_month = $end_month = null;
for ($year = $start_year; $year <= $end_year; $year++) {
for ($i = 1; $i <= 12; $i++) {
if (isset($segmented[$year][$i])) {
if (!$start_month) {
$start_month = $year * 12 + $i - 1;
}
$end_month = $year * 12 + $i - 1;
}
}
}
// transform $segmented to $data depending on $mode
$data = array();
foreach ($segmented as $year => $i) {
foreach ($i as $month => $j) {
foreach ($j as $key => $k) {
if ($mode == self::MODE_RETIREMENT) {
if (empty($data[$year][$month])) {
$data[$year][$month] = array('RET' => 0, 'NO_RET' => 0);
}
$data[$year][$month]['RET'] += $k->value_ret;
$data[$year][$month]['NO_RET'] += $k->value_no_ret;
} else {
if ($mode == self::MODE_TAX) {
if (empty($data[$year][$month])) {
$data[$year][$month] = array('PRE_TAX' => 0, 'POST_TAX' => 0);
}
$data[$year][$month]['PRE_TAX'] += $k->value_ret_pretax;
$data[$year][$month]['POST_TAX'] += $k->value_posttax;
} else {
if ($mode == self::MODE_TAX_RET) {
if (empty($data[$year][$month])) {
$data[$year][$month] = array('NO_RET' => 0, 'PRE_TAX' => 0, 'POST_TAX' => 0);
}
$data[$year][$month]['NO_RET'] += $k->value_no_ret;
$data[$year][$month]['PRE_TAX'] += $k->value_ret_pretax;
$data[$year][$month]['POST_TAX'] += $k->value_ret_posttax;
} else {
$data[$year][$month][$key] = $k->value;
}
}
}
}
}
}
// redo labels
$labels = array();
for ($i = $start_month; $i <= $end_month; $i++) {
$labels[] = $cdata['labels'][$i % 12] . ' ' . intval($i / 12);
}
$cdata['labels'] = $labels;
// format data for chart
$max_value = 0;
for ($i = count($categories) - 1; $i >= 0; $i--) {
$category = $categories[$i];
for ($j = $start_month; $j <= $end_month; $j++) {
if (isset($data[intval($j / 12)][$j % 12 + 1][$category->key])) {
$value = $data[intval($j / 12)][$j % 12 + 1][$category->key];
} else {
$value = null;
}
$cdata['datasets'][$i]['itemData'][$j - $start_month] = $value;
if ($value !== null && isset($cdata['datasets'][$i + 1]['data'][$j - $start_month])) {
$value += $cdata['datasets'][$i + 1]['data'][$j - $start_month];
}
$cdata['datasets'][$i]['data'][$j - $start_month] = $value;
$max_value = max($max_value, $value);
}
}
echo json_encode(array("Line", $cdata, $this->getOptions($max_value, $start_year + 1 >= $end_year), $this->getExtra($categories)));
}
