feat(core): add router, session handling and view renderer

src/Core/Router.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Bazaar\Core;
+
+final class Router
+{
+    private array $routes = [];
+
+    public function get(string $path, array $handler, array $middleware = []): void
+    {
+        $this->add('GET', $path, $handler, $middleware);
+    }
+
+    public function post(string $path, array $handler, array $middleware = []): void
+    {
+        $this->add('POST', $path, $handler, $middleware);
+    }
+
+    public function add(string $method, string $path, array $handler, array $middleware = []): void
+    {
+        $this->routes[] = [
+            'method' => $method,
+            'pattern' => $this->compile($path),
+            'handler' => $handler,
+            'middleware' => $middleware,
+        ];
+    }
+
+    private function compile(string $path): string
+    {
+        $regex = preg_replace('#\{([a-zA-Z]+)\}#', '(?P<$1>[^/]+)', $path);
+        return '#^' . $regex . '$#';
+    }
+
+    public function match(Request $request): RouteMatch
+    {
+        $pathMatched = false;
+        foreach ($this->routes as $route) {
+            if (!preg_match($route['pattern'], $request->path(), $captured)) {
+                continue;
+            }
+            $pathMatched = true;
+            if ($route['method'] !== $request->method()) {
+                continue;
+            }
+            $params = array_filter($captured, 'is_string', ARRAY_FILTER_USE_KEY);
+            return new RouteMatch($route['handler'], $params, $route['middleware'], 200);
+        }
+
+        return new RouteMatch(null, [], [], $pathMatched ? 405 : 404);
+    }
+}