<?php
/**
* This file is part of Aksara CMS, both framework and publishing
* platform.
*
* @author Aby Dahana <abydahana@gmail.com>
* @copyright (c) Aksara Laboratory <https://aksaracms.com>
* @license MIT License
*
* This source file is subject to the MIT license that is bundled
* with this source code in the LICENSE.txt file.
*
* When the signs is coming, those who don't believe at "that time"
* have only two choices, commit suicide or become brutal.
*/
use RecursiveArrayIterator;
use RecursiveIteratorIterator;
if (! function_exists('geojson2png')) {
/**
* Convert GeoJSON data to a Google Static Maps URL
*/
function geojson2png(string $geojson = '[]', string $stroke_color = '#ff0000', string $fill_color = '#ff0000', int $width = 600, int $height = 600): string
{
$data = json_decode($geojson);
if (json_last_error() !== JSON_ERROR_NONE) {
return '';
}
$paths = [];
$markers = [];
// Helper to format hex for Google API (removes # and prepends 0x)
$clean_stroke = '0x' . ltrim($stroke_color, '#');
$clean_fill = '0x' . ltrim($fill_color, '#');
if (isset($data->features) && is_array($data->features)) {
foreach ($data->features as $feature) {
$type = $feature->geometry->type ?? '';
$coords = $feature->geometry->coordinates ?? [];
if (in_array($type, ['LineString', 'MultiLineString', 'Polygon', 'MultiPolygon'])) {
$prefix = ('Polygon' === $type || 'MultiPolygon' === $type)
? "path=color:{$clean_stroke}|weight:1|fillcolor:{$clean_fill}"
: "path=color:{$clean_stroke}99|weight:1";
$points = [];
// Flatten coordinates regardless of nesting depth
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($coords));
$temp_coords = [];
foreach ($iterator as $v) {
$temp_coords[] = $v;
if (count($temp_coords) === 2) {
// GeoJSON is [lng, lat], Google Static Maps is [lat, lng]
$points[] = $temp_coords[1] . ',' . $temp_coords[0];
$temp_coords = [];
}
}
if (! empty($points)) {
$paths[] = $prefix . '|' . implode('|', $points);
}
} elseif (in_array($type, ['Point', 'MultiPoint'])) {
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($coords));
$temp_coords = [];
foreach ($iterator as $v) {
$temp_coords[] = $v;
if (count($temp_coords) === 2) {
$markers[] = $temp_coords[1] . ',' . $temp_coords[0];
$temp_coords = [];
}
}
}
}
} elseif (isset($data->lat, $data->lng)) {
$markers[] = $data->lat . ',' . $data->lng;
}
// Build URL
$params = [
'key' => get_setting('openlayers_search_key'),
'size' => $width . 'x' . $height,
'sensor' => 'false'
];
$url = 'https://maps.googleapis.com/maps/api/staticmap?' . http_build_query($params);
if (! empty($markers)) {
$url .= '&markers=scale:1|' . implode('|', $markers);
}
if (! empty($paths)) {
foreach ($paths as $path) {
$url .= '&' . $path;
}
}
return $url;
}
}
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