From ee3604bcf78d6a04dfed7525d5dd768bc99b15db Mon Sep 17 00:00:00 2001
From: Alex <zuedev@gmail.com>
Date: Sun, 23 Mar 2025 11:40:02 +0000
Subject: feat(router): Add support for dynamic route parameters

- Enhanced the `add` method to handle parameterized routes (e.g., `/test/:name`) by converting `:param` into regex groups.
- Updated the `route` method to extract and store route parameters in the `parameters` property.
- Added logic to match parameterized routes and pass extracted parameters to handlers.
- Included a fallback for 404 responses when no route matches.

This update allows handlers to access dynamic route parameters via `router.parameters`.
---
 source/index.js          |  8 ++++++++
 source/library/router.js | 26 ++++++++++++++++++++++----
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/source/index.js b/source/index.js
index bed631f..7a2ac91 100644
--- a/source/index.js
+++ b/source/index.js
@@ -83,6 +83,14 @@ export default {
       });
     });
 
+    router.add("/test/:name", (request) => {
+      const { name } = router.parameters;
+
+      return router.respond({
+        message: `Hello, ${name}! :3`,
+      });
+    });
+
     return router.route();
   },
 };
diff --git a/source/library/router.js b/source/library/router.js
index 821f84a..d0914ff 100644
--- a/source/library/router.js
+++ b/source/library/router.js
@@ -13,6 +13,7 @@ export default class Router {
     this.environment = environment;
     this.context = context;
     this.routes = new Map(); // Use Map for faster lookups
+    this.parameters = {}; // Store extracted route parameters
   }
 
   /*
@@ -32,7 +33,14 @@ export default class Router {
     }
 
     const normalizedPath = path.replace(/\/+$/, ""); // Normalize path
-    this.routes.set(normalizedPath, handler);
+    const pathRegex = new RegExp(
+      "^" +
+        normalizedPath
+          .replace(/:[^/]+/g, "([^/]+)") // Convert :param to regex group
+          .replace(/\//g, "\\/") +
+        "$"
+    );
+    this.routes.set(pathRegex, { handler, originalPath: normalizedPath });
     return this;
   }
 
@@ -63,10 +71,20 @@ export default class Router {
       const url = new URL(this.request.url);
       const normalizedPath = url.pathname.replace(/\/+$/, ""); // Remove trailing slashes
 
-      const handler = this.routes.get(normalizedPath);
+      for (const [pathRegex, { handler, originalPath }] of this.routes) {
+        const match = normalizedPath.match(pathRegex);
+        if (match) {
+          // Extract parameters
+          const paramNames = [...originalPath.matchAll(/:([^/]+)/g)].map(
+            (m) => m[1]
+          );
+          this.parameters = paramNames.reduce((params, name, index) => {
+            params[name] = match[index + 1];
+            return params;
+          }, {});
 
-      if (handler) {
-        return handler(this.request, this.environment, this.context);
+          return handler(this.request, this.environment, this.context);
+        }
       }
 
       // Return 404 if route not found
-- 
cgit v1.2.3