Add ttfb timing to requests

src/Request.php

@@ -2,6 +2,8 @@
 
 namespace DeploymentHawk;
 
+use Illuminate\Support\Collection;
+
 class Request
 {
     protected array $request;
@@ -65,7 +67,8 @@ public function timings(int $precision = 2): array
             'connect' => $this->connectTiming($precision),
             'send' => $this->sendTiming($precision),
             'wait' => $this->waitTiming($precision),
-            'receive' => $this->sendTiming($precision),
+            'receive' => $this->receiveTiming($precision),
+            'ttfb' => $this->ttfbTiming($precision),
         ];
     }
 
@@ -112,6 +115,18 @@ public function receiveTiming(int $precision = 2): float
         return round($this->request['timings']['receive'], $precision);
     }
 
+    public function ttfbTiming(int $precision = 2): float
+    {
+        $ttfb = (new Collection([
+            $this->dnsTiming($precision),
+            $this->connectTiming($precision),
+            $this->sendTiming($precision),
+            $this->waitTiming($precision),
+        ]))->filter()->sum();
+
+        return round($ttfb, $precision);
+    }
+
     public function requestHeaders(): array
     {
         return $this->request['request']['headers'];

tests/Unit/RequestTest.php

@@ -54,7 +54,8 @@
         'connect' => 52.07,
         'send' => 0.25,
         'wait' => 26.75,
-        'receive' => 0.25,
+        'receive' => 46.90,
+        'ttfb' => 79.08,
     ]);
 });
 
@@ -100,6 +101,12 @@
         ->and($this->request->receiveTiming(3))->toEqual(46.900);
 });
 
+test('request ttfb timing', function () {
+    expect($this->request->ttfbTiming())->toEqual(79.08)
+        ->and($this->request->ttfbTiming(0))->toEqual(79)
+        ->and($this->request->ttfbTiming(3))->toEqual(79.075);
+});
+
 test('request headers', function () {
     expect($this->request->requestHeaders())->toBeArray()
         ->and($this->request->requestHeaders()[0])->toMatchArray([