Initial proof-of-concept commit

2026-06-06 10:23:49 -05:00
commit 122358286d
6 changed files with 1420 additions and 0 deletions
@@ -0,0 +1,193 @@
+<?php
+declare(strict_types=1);
+
+$token      = getenv( 'THERMOPRO_BRIDGE_TOKEN' ) ?: 'dev-secret';
+$dataPath   = __DIR__ . '/data';
+$latestPath = $dataPath . '/latest.json';
+$logPath    = $dataPath . '/readings.ndjson';
+
+if ( ! is_dir( $dataPath ) ) {
+	mkdir( $dataPath, 0775, true );
+}
+
+function sendJson( array $payload, int $statusCode = 200 ): void {
+	http_response_code( $statusCode );
+	header( 'Content-Type: application/json' );
+
+	echo json_encode(
+        $payload,
+        JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES
+	);
+
+	exit;
+}
+
+function getRequestPath(): string {
+	return parse_url( $_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH ) ?: '/';
+}
+
+function readJsonBody(): array {
+	$body    = file_get_contents( 'php://input' );
+	$payload = json_decode( $body ?: '', true );
+
+	if ( ! is_array( $payload ) ) {
+		sendJson(
+            array(
+				'ok'    => false,
+				'error' => 'Invalid JSON body',
+            ),
+            400
+		);
+	}
+
+	return $payload;
+}
+
+function requireBridgeToken( string $expectedToken ): void {
+	$providedToken = $_SERVER['HTTP_X_BRIDGE_TOKEN'] ?? '';
+
+	if ( ! hash_equals( $expectedToken, $providedToken ) ) {
+		sendJson(
+            array(
+				'ok'    => false,
+				'error' => 'Invalid bridge token',
+            ),
+            401
+		);
+	}
+}
+
+function validateReading( array $payload ): void {
+	$requiredFields = array(
+		'deviceId',
+		'connected',
+		'battery',
+		'unit',
+		'probes',
+		'readingTime',
+	);
+
+	foreach ( $requiredFields as $field ) {
+		if ( ! array_key_exists( $field, $payload ) ) {
+			sendJson(
+                array(
+					'ok'    => false,
+					'error' => 'Missing required field: ' . $field,
+                ),
+                422
+			);
+		}
+	}
+
+	if ( ! is_array( $payload['probes'] ) ) {
+		sendJson(
+            array(
+				'ok'    => false,
+				'error' => 'The probes field must be an array',
+            ),
+            422
+		);
+	}
+}
+
+$path   = getRequestPath();
+$method = $_SERVER['REQUEST_METHOD'] ?? 'GET';
+
+if ( $method === 'POST' && $path === '/api/thermopro/readings' ) {
+	requireBridgeToken( $token );
+
+	$payload = readJsonBody();
+	validateReading( $payload );
+
+	$payload['serverReceivedAt'] = gmdate( DATE_ATOM );
+
+	file_put_contents(
+        $latestPath,
+        json_encode( $payload, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES )
+	);
+
+	file_put_contents(
+        $logPath,
+        json_encode( $payload, JSON_UNESCAPED_SLASHES ) . PHP_EOL,
+        FILE_APPEND | LOCK_EX
+	);
+
+	sendJson(
+        array(
+			'ok'         => true,
+			'receivedAt' => $payload['serverReceivedAt'],
+        )
+    );
+}
+
+if ( $method === 'GET' && $path === '/api/thermopro/latest' ) {
+	if ( ! file_exists( $latestPath ) ) {
+		sendJson(
+            array(
+				'ok'    => false,
+				'error' => 'No readings received yet',
+            ),
+            404
+		);
+	}
+
+	header( 'Content-Type: application/json' );
+	readfile( $latestPath );
+	exit;
+}
+
+if ( $method === 'GET' && ( $path === '/' || $path === '/status' ) ) {
+	$latest = null;
+
+	if ( file_exists( $latestPath ) ) {
+		$latest = json_decode( file_get_contents( $latestPath ), true );
+	}
+
+	header( 'Content-Type: text/html; charset=utf-8' );
+	?>
+	<!doctype html>
+	<html lang="en">
+	<head>
+		<meta charset="utf-8">
+		<title>ThermoPro Bridge POC</title>
+		<meta http-equiv="refresh" content="10">
+		<style>
+			body {
+				font-family: system-ui, sans-serif;
+				margin: 2rem;
+				max-width: 900px;
+			}
+
+			pre {
+				background: #f4f4f4;
+				overflow: auto;
+				padding: 1rem;
+			}
+		</style>
+	</head>
+	<body>
+		<h1>ThermoPro Bridge POC</h1>
+
+		<?php if ( $latest === null ) { ?>
+			<p>No readings received yet.</p>
+		<?php } else { ?>
+			<p>
+				Latest reading received at:
+				<strong><?php echo htmlspecialchars( $latest['serverReceivedAt'] ?? 'unknown', ENT_QUOTES, 'UTF-8' ); ?></strong>
+			</p>
+
+			<pre><?php echo htmlspecialchars( json_encode( $latest, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES ), ENT_QUOTES, 'UTF-8' ); ?></pre>
+		<?php } ?>
+	</body>
+	</html>
+	<?php
+	exit;
+}
+
+sendJson(
+    array(
+		'ok'    => false,
+		'error' => 'Not found',
+    ),
+    404
+);