54 lines
1.7 KiB
PHP
54 lines
1.7 KiB
PHP
<?php
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require_once __DIR__ . '/../config.php';
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// Get parameters from the request
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$layer = $_GET['layer'] ?? 'clouds_new';
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$z = $_GET['z'] ?? 0;
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$x = $_GET['x'] ?? 0;
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$y = $_GET['y'] ?? 0;
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// Validate parameters (basic validation)
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if (!is_numeric($z) || !is_numeric($x) || !is_numeric($y)) {
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header("HTTP/1.1 400 Bad Request");
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echo "Invalid tile coordinates.";
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exit;
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}
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// Construct the OpenWeatherMap API URL
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$apiKey = defined('OWM_API_KEY') ? OWM_API_KEY : '';
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if (empty($apiKey)) {
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header("HTTP/1.1 500 Internal Server Error");
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echo "API key is not configured.";
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exit;
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}
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$url = "https://tile.openweathermap.org/map/{$layer}/{$z}/{$x}/{$y}.png?appid={$apiKey}";
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// Fetch the tile using cURL
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
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// Follow redirects, as OWM might use them
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curl_setopt($ch, CURLOPT_TIMEOUT, 20);
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// Set a reasonable timeout
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$tile_data = curl_exec($ch);
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$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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// Check for errors and serve the tile
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if ($http_code == 200 && !empty($tile_data)) {
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header('Content-Type: image/png');
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header('Content-Length: ' . strlen($tile_data));
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echo $tile_data;
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} else {
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// Return a transparent pixel or a specific error image if the tile is not found or an error occurs
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header("HTTP/1.1 " . ($http_code !== 200 ? $http_code : 404));
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// Create a 1x1 transparent PNG
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$transparent_pixel = base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=');
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header('Content-Type: image/png');
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echo $transparent_pixel;
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}
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exit;
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?>
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