add nova

nova/src/Asset.php

@@ -0,0 +1,132 @@
+<?php
+
+namespace Laravel\Nova;
+
+use DateTime;
+use Illuminate\Contracts\Support\Responsable;
+use Illuminate\Support\Str;
+
+/**
+ * @method static static make(string|self $name, string|null $path, bool|null $remote = null)
+ */
+abstract class Asset implements Responsable
+{
+    use Makeable;
+
+    /**
+     * The Assert name.
+     *
+     * @var string
+     */
+    protected $name;
+
+    /**
+     * The Asset path.
+     *
+     * @var string|null
+     */
+    protected $path;
+
+    /**
+     * Determine Asset is remote.
+     *
+     * @var bool
+     */
+    protected $remote;
+
+    /**
+     * Construct a new Asset instance.
+     *
+     * @param  string|self  $name
+     * @param  string|null  $path
+     * @param  bool|null  $remote
+     */
+    public function __construct($name, $path, $remote = null)
+    {
+        if ($name instanceof self) {
+            $this->name = $name->name();
+            $this->path = $name->path();
+            $this->remote = $name->isRemote();
+
+            return;
+        }
+
+        if (is_null($remote)) {
+            $remote = Str::startsWith($path, ['http://', 'https://', '://']);
+        }
+
+        $this->name = $name;
+        $this->path = $path;
+        $this->remote = $remote;
+    }
+
+    /**
+     * Make a remote URL.
+     *
+     * @param  string  $path
+     * @return static
+     */
+    public static function remote($path)
+    {
+        return new static(md5($path), $path, true);
+    }
+
+    /**
+     * Get asset name.
+     *
+     * @return string
+     */
+    public function name()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Get asset path.
+     *
+     * @return string|null
+     */
+    public function path()
+    {
+        return $this->path;
+    }
+
+    /**
+     * Determine if URL is remote.
+     *
+     * @return bool
+     */
+    public function isRemote()
+    {
+        return $this->remote;
+    }
+
+    /**
+     * Create an HTTP response that represents the object.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Symfony\Component\HttpFoundation\Response
+     */
+    public function toResponse($request)
+    {
+        abort_if($this->isRemote() || is_null($this->path), 404);
+
+        return response(
+            file_get_contents($this->path), 200, $this->toResponseHeaders(),
+        )->setLastModified(DateTime::createFromFormat('U', (string) filemtime($this->path)));
+    }
+
+    /**
+     * Get the Asset URL.
+     *
+     * @return string
+     */
+    abstract public function url();
+
+    /**
+     * Get response headers.
+     *
+     * @return array<string, string>
+     */
+    abstract public function toResponseHeaders();
+}