114 lines
4.8 KiB
PHP
114 lines
4.8 KiB
PHP
<?php
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namespace SerenityNow\Cacheroute\Classes;
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use Illuminate\Http\Request as LaravelRequest;
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use SerenityNow\Cacheroute\Models\CacheRoute;
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use Closure;
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class RouteCacheMiddleware
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{
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public function handle(LaravelRequest $request, Closure $next)
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{
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//bail if table does not exist or
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//route not in the list of routes to be cached
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$hasTable = \Schema::hasTable('serenitynow_cacheroute_routes');
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$cacheRow = $this->shouldBeCached($request);
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$ajaxRequest = $request->ajax();
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//dd($cacheRow);
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if (!$hasTable || !$cacheRow || $ajaxRequest ||$request->post()) {
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return $next($request);
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}
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return $this->cacheResponse($request, $next, $cacheRow['cache_ttl']);
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}
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/**
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* @param LaravelRequest $request
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* @param Closure $next
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* @param $ttl
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* @return mixed
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*/
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protected function cacheResponse(LaravelRequest $request, Closure $next, $ttl)
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{
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$cacheKey = $this->getCacheKey($request->url());
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if (\Cache::has($cacheKey)) {
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return \Response::make($this->getCachedContent($cacheKey, $request, \Cache::get($cacheKey)), 200);
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}
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$response = $next($request);
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\Cache::put($cacheKey, $response->getContent(), $ttl);
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return $response;
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}
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/**
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* add instrumentation to help with debug. Adding ?debug
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* to a cached url will precede the content with "CACHED"
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*
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* @param $cacheKey
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* @param $request
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* @param $content
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* @return string
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*/
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protected function getCachedContent($cacheKey, $request, $content)
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{
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$isDebugRequest = $request->exists('debug') || $request->exists('cache-info');
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if ($isDebugRequest) {
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return $content.'
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<div class="cache-notice" style="display: block; position: fixed; width: 50%; background: #fff; padding: 20px 30px 25px; left: 50%; border: 1px solid #aaa; margin-left: calc(-50% / 2); bottom: 10%; z-index: 500; box-shadow: 0 0 20px rgba(0,0,0,0.2); font-size: 16px; font-size: 1.6rem;">
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<div class="title" style="margin: -20px -30px 10px; background: #999; color: #fff; padding: 10px 30px; text-align: center;">CACHED CONTENT</div>
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<span class="cache_key" style="display: inline-block; width: 100%; background: #fff; padding: 10px 10px 10px 0; margin-bottom: -10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;">
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<span class="title" style="float: left; width:45px; color: #000; font-weight: bold; line-height: 30px;">URL: </span>
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<input readonly class="value" style="float: left; width: calc(100% - 45px); border:1px solid #000; color: red; padding: 5px 7px; height: 30px; background: #eee" type="text" value="'.$request->url().'">
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</span>
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<span class="cache_key" style="display: inline-block; width: 100%; background: #fff; color: red; padding: 10px 10px 10px 0; margin-bottom: -10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;">
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<span class="title" style="float: left; width:45px; color: #000; font-weight: bold; line-height: 30px;">KEY: </span>
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<input readonly class="value" style="float: left; width: calc(100% - 45px); border:1px solid #000; color: red; padding: 5px 7px; height: 30px; background: #eee" type="text" value="'.$cacheKey.'">
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</span>
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<hr style="border:none;">
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<a href="'.$request->url().'" class="cancel" style="float: left; background: #aaa; color: #fff; padding: 10px 15px; margin-top: 20px; text-decoration: none;">Cancel</a>
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<a href="?cache-clear" class="alert alert-info" style="float: right; background: #1991d1; color: #fff; padding: 10px 15px; margin-top: 20px; text-decoration: none;">Clear this now</a>
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</div>';
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}
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if ($request->exists('cache-clear')) {
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\Cache::forget($cacheKey);
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return \Redirect::to($request->url());
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}
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return $content;
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}
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//generate a cache key based on the url
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/**
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* @param $url
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* @return string
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*/
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protected function getCacheKey($url)
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{
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return 'SerenityNow.Cacheroute.' . str_slug($url);
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}
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/**
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* @param $request
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* @return bool
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*/
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protected function shouldBeCached($request)
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{
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$cacheRouteRows = \Cache::remember('SerenityNow.Cacheroute.AllCachedRoutes',
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\Config::get('cms.urlCacheTtl'),
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function () {
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return CacheRoute::orderBy('sort_order')->get()->toArray();
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}
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);
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// dd($request->is($request->path()));
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foreach ($cacheRouteRows as $cacheRow) {
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if (count($cacheRow) && $request->is($cacheRow['route_pattern'])) {
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return $cacheRow;
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}
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}
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return false;
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}
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}
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