Alcea
85 lines
2.8 KiB
PHP
85 lines
2.8 KiB
PHP
<?php
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// sparkline.php - Proper SVG sparkline only
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$symbol = isset($_GET['symbol']) ? strtoupper(trim($_GET['symbol'])) : '';
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$timespan = isset($_GET['timespan']) ? $_GET['timespan'] : '';
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if (empty($symbol) || empty($timespan)) {
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header('Content-Type: text/plain');
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die("ERROR");
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}
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if (!in_array($timespan, ['1month', '6month', '12month'])) {
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header('Content-Type: text/plain');
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die("ERROR");
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}
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$range_map = [
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'1month' => ['range' => '1mo', 'interval' => '1d'],
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'6month' => ['range' => '6mo', 'interval' => '1wk'],
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'12month' => ['range' => '1y', 'interval' => '1mo']
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];
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$range = $range_map[$timespan]['range'];
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$interval = $range_map[$timespan]['interval'];
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$url = "https://query1.finance.yahoo.com/v8/finance/chart/$symbol?range=$range&interval=$interval";
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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, true);
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curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0');
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$response = curl_exec($ch);
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curl_close($ch);
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$data = json_decode($response, true);
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if (!isset($data['chart']['result'][0])) {
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header('Content-Type: text/plain');
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die("ERROR");
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}
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$prices = $data['chart']['result'][0]['indicators']['quote'][0]['close'];
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$valid_prices = array_filter($prices, function($p) { return $p !== null && $p > 0; });
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$valid_prices = array_values($valid_prices);
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if (count($valid_prices) < 2) {
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header('Content-Type: text/plain');
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die("ERROR");
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}
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$first = $valid_prices[0];
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$last = end($valid_prices);
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$change = (($last - $first) / $first) * 100;
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$trend = number_format(abs($change), 1);
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$arrow = $change > 0 ? '📈' : ($change < 0 ? '📉' : '➡️');
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$direction = $change > 0 ? 'UP' : ($change < 0 ? 'DOWN' : 'FLAT');
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$color = $change > 0 ? '#22c55e' : ($change < 0 ? '#ef4444' : '#6b7280');
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$sign = $change > 0 ? '+' : '';
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// Build SVG sparkline
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$width = 300;
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$height = 60;
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$padding = 2;
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$graphWidth = $width - ($padding * 2);
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$graphHeight = $height - ($padding * 2);
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$min = min($valid_prices);
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$max = max($valid_prices);
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$range = $max - $min ?: 0.01;
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$points = [];
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foreach ($valid_prices as $i => $price) {
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$x = $padding + ($i / (count($valid_prices) - 1)) * $graphWidth;
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$y = $padding + $graphHeight - (($price - $min) / $range) * $graphHeight;
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$points[] = "$x,$y";
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}
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header('Content-Type: image/svg+xml');
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?>
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<svg width="<?= $width ?>" height="<?= $height + 30 ?>" xmlns="http://www.w3.org/2000/svg">
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<polyline points="<?= implode(' ', $points) ?>" fill="none" stroke="<?= $color ?>" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
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<text x="<?= $width / 2 ?>" y="<?= $height + 20 ?>" text-anchor="middle" font-family="system-ui, sans-serif" font-size="14" fill="<?= $color ?>">
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<?= $arrow ?> <?= $sign . $trend ?>% <?= $direction ?> (<?= $timespan ?>)
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</text>
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</svg>
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