new file: README.md

modified:   app.php
	renamed:    update.php -> device-api.php
	new file:   integration.php
	deleted:    registration.php
	deleted:    report.php

software/device-api.php

@@ -0,0 +1,37 @@
+<?php
+
+// Returns a new ID for device to use for future communication.
+$router->get('/api/id', function($req) {
+    http_response_code(200);
+});
+
+// Device reports temperature back on this endpoint.
+$router->post('/api/report', function($req) {
+    echo 'body:' . var_dump($req->getBody()) . "\n";
+    DumpHTTPRequestToFile::execute("/tmp/out.txt");
+    http_response_code(200);
+});
+
+$router->get('/api/update', function() {
+    if ( $_SERVER['HTTP_USER_AGENT'] == 'ESP8266-http-Update' && isset($_SERVER['HTTP_X_ESP8266_SKETCH_MD5']) ) {
+        $user_agent        = $_SERVER['HTTP_USER_AGENT'];
+        $curr_firmware_md5 = $_SERVER['HTTP_X_ESP8266_SKETCH_MD5'];
+        $firmware_file     = __DIR__ . '/firmware.bin';
+        $firmware_md5      = md5_file($firmware_file);
+        echo "USER_AGENT -> ESP8266-http-Update\n";
+	echo 'X_ESP8266_SKETCH_MD5 -> ' . $_SERVER['HTTP_X_ESP8266_SKETCH_MD5'] . "\n";
+	echo 'MD5 file hash of ' . $firmware_file . ': ' . $firmware_md5;
+	if ( $curr_firmware_md5 == $firmware_md5 ) {
+            http_response_code(204);
+        }
+        else {
+            $fwdata = file_get_contents($firmware_file);
+            header('Content-Length:' . strlen($fwdata));
+            echo $fwdata;
+            http_response_code(200);
+        }
+        return;
+    }
+
+    http_response_code(400);
+});