From e76eefff7b921da5ffa4552e27249914fdff0d35 Mon Sep 17 00:00:00 2001
From: Recca Tsai <recca0120.gmail.com>
Date: Fri, 19 Feb 2016 21:41:09 +0800
Subject: [PATCH] response 304, load resources once

---
 .travis.yml                                 | 33 ++---------------
 resources/views/panel.blade.php             | 32 +++++++++++------
 src/Http/Controllers/TerminalController.php | 39 +++++++++++++++++----
 3 files changed, 57 insertions(+), 47 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 41ad5cd..8bbf6c1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,35 +7,8 @@ php:
   - 7.0
   - hhvm
 
-env:
-  global:
-    - setup=basic
-    - coverage=no
+sudo: false
 
-before_script:
-  - travis_retry composer self-update
-  - composer config discard-changes true
-  - if [[ $setup = 'basic' ]]; then travis_retry composer install --prefer-source --no-interaction; fi
-  - if [[ $setup = 'stable' ]]; then travis_retry composer update --prefer-source --no-interaction --prefer-stable; fi
-  - if [[ $setup = 'lowest' ]]; then travis_retry composer update --prefer-source --no-interaction --prefer-lowest --prefer-stable; fi
-  - if [[ $setup = 'coveralls' ]]; then travis_retry composer require "psr/log=1.0.0" "satooshi/php-coveralls=~0.6" "symfony/yaml=~2.0" --prefer-source --no-interaction --dev; fi
+install: travis_retry composer install --no-interaction --prefer-source
 
-script:
-  - if [[ $coverage = 'yes' ]]; then ./vendor/bin/phpunit -c phpunit.xml --coverage-clover build/logs/clover.xml; fi
-  - if [[ $coverage = 'no' ]]; then ./vendor/bin/phpunit -c phpunit.xml; fi
-
-after_script:
-  - if [[ $setup = 'coveralls' ]]; then php vendor/bin/coveralls -v; fi
-
-matrix:
-  include:
-    - php: 5.5
-      env: setup=lowest
-    - php: 5.5
-      env: setup=stable
-    - php: 5.5
-      env: setup=coveralls coverage=yes
-  allow_failures:
-    - env: setup=stable
-    - env: setup=coveralls coverage=yes
-  fast_finish: true
+script: vendor/bin/phpunit --verbose
diff --git a/resources/views/panel.blade.php b/resources/views/panel.blade.php
index 7b18f77..0346ff8 100644
--- a/resources/views/panel.blade.php
+++ b/resources/views/panel.blade.php
@@ -1,14 +1,18 @@
 <textarea id="panel-editor" style="display: none;"></textarea>
 <div id="panel-shell"></div>
 
-
 <script>
 (function() {
-    var loadStyle = function(filename) {
+    var loadStyle = function(id, filename) {
+        id = "laravel-terminal-"+id;
+        if (document.getElementById(id)) {
+            return;
+        }
         var link = document.createElement('link');
-        link.setAttribute("rel", "stylesheet")
-        link.setAttribute("type", "text/css")
-        link.setAttribute("href", filename)
+        link.setAttribute("rel", "stylesheet");
+        link.setAttribute("type", "text/css");
+        link.setAttribute("href", filename);
+        link.setAttribute("id", id)
         var head = document.getElementsByTagName('head');
 
         if (head.length > 0) {
@@ -18,10 +22,18 @@
         }
     }
 
-    var loadScript = function(filename, callback) {
+    var loadScript = function(id, filename, callback) {
+        id = "laravel-terminal-"+id;
+        if (document.getElementById(id)) {
+            if (callback) {
+                callback();
+            }
+            return;
+        }
         var js = document.createElement('script');
         js.setAttribute("type","text/javascript");
         js.setAttribute("src", filename);
+        js.setAttribute("id", id);
         if (callback) {
             js.onload = callback;
         }
@@ -33,7 +45,7 @@
         }
     }
 
-    loadStyle("{{ action('\Recca0120\Terminal\Http\Controllers\TerminalController@media', ['file' => 'css/app.css']) }}");
+    loadStyle('css', "{{ action('\Recca0120\Terminal\Http\Controllers\TerminalController@media', ['file' => 'css/app.css']) }}");
     var scripts = {
         jquery: "{{ action('\Recca0120\Terminal\Http\Controllers\TerminalController@media', ['file' => 'js/jquery.min.js']) }}",
         terminal: "{{ action('\Recca0120\Terminal\Http\Controllers\TerminalController@media', ['file' => 'js/terminal.js']) }}",
@@ -41,8 +53,8 @@
     };
 
     var callback = function () {
-        loadScript(scripts.terminal, function () {
-            loadScript(scripts.app, function() {
+        loadScript('terminal' ,scripts.terminal, function () {
+            loadScript('app', scripts.app, function() {
                 new Term("#panel-shell", $.extend({!! $options !!}, {
                     editor: "#panel-editor"
                 }));
@@ -51,7 +63,7 @@
     }
 
     if (!window.jQuery) {
-        loadScript(scripts.jquery, callback);
+        loadScript('jquery', scripts.jquery, callback);
     } else {
         callback();
     }
diff --git a/src/Http/Controllers/TerminalController.php b/src/Http/Controllers/TerminalController.php
index c78a640..e22eb8c 100644
--- a/src/Http/Controllers/TerminalController.php
+++ b/src/Http/Controllers/TerminalController.php
@@ -96,15 +96,40 @@ public function endPoint(Request $request)
         ]);
     }
 
-    public function media(Filesystem $filesystem, $file)
+    /**
+     * media.
+     *
+     * @param \Illuminate\Filesystem\Filesystem $filesystem
+     * @param \Illuminate\Http\Request $request
+     * @param string     $file
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function media(Filesystem $filesystem, Request $request, $file)
     {
-        $mimeType = strpos($file, '.css') !== false ? 'text/css' : 'application/javascript';
         $filename = __DIR__.'/../../../public/'.$file;
-
-        return response($filesystem->get($filename), 200, [
+        $mimeType = strpos($filename, '.css') !== false ? 'text/css' : 'application/javascript';
+        $lastModified = $filesystem->lastModified($filename);
+        $eTag = sha1_file($filename);
+        $headers = [
             'content-type'  => $mimeType,
-            'last-modified' => date('D, d M Y H:i:s ', $filesystem->lastModified($filename)).'GMT',
-        ])
-        ->setEtag(sha1_file($filename));
+            'last-modified' => date('D, d M Y H:i:s ', $lastModified).'GMT',
+        ];
+
+        if (@strtotime($request->server('HTTP_IF_MODIFIED_SINCE')) === $lastModified ||
+            trim($request->server('HTTP_IF_NONE_MATCH'), '"') === $eTag
+        ) {
+            $response = response(null, 304, $headers);
+        } else {
+            $response = response()->stream(function () use ($filename) {
+                $out = fopen('php://output', 'wb');
+                $file = fopen($filename, 'rb');
+                stream_copy_to_stream($file, $out, filesize($filename));
+                fclose($out);
+                fclose($file);
+            }, 200, $headers);
+        }
+
+        return $response->setEtag($eTag);
     }
 }