1 files changed, 60 insertions, 0 deletions
diff --git a/lib/router.rb b/lib/router.rb
new file mode 100644
index 0000000..3597dfd
--- /dev/null
+++ b/lib/router.rb
@@ -0,0 +1,60 @@
+require 'pry'
+
+class Router
+  def initialize
+    @routes = []
+  end
+
+  def call(env)
+    path = env["REQUEST_PATH"]
+    method = env["REQUEST_METHOD"]
+    @routes.each do |route|
+      next if method != route[:method]
+      params = match_route(path, route[:path])
+      if params
+        return respond_html(route[:block].call(params))
+      end
+    end
+    respond_html("not found", status: 404)
+  end
+
+  def match_route(incoming_path, path)
+    params = {}
+    incoming_parts = incoming_path.split("/")
+    path_parts = path.split("/")
+
+    incoming_parts.each_with_index do |incoming_part, index|
+      path_part = path_parts[index]
+      if path_part&.start_with?(":")
+        params[path_part[1..-1]] = incoming_part
+      else
+        if path_part != incoming_part
+          return false
+        end
+      end
+    end
+    params
+  end
+
+  def get(path, &block)
+    @routes.push({ method: "GET", path: path, block: block })
+  end
+
+  def post(path, &block)
+    @routes.push({ method: "POST", path: path, block: block })
+  end
+
+  def put(path, &block)
+    @routes.push({ method: "PUT", path: path, block: block })
+  end
+
+  def delete(path, &block)
+    @routes.push({ method: "DELETE", path: path, block: block })
+  end
+
+  private
+
+  def respond_html(content, status: 200)
+    [status, {'Content-Type' => 'text/html'}, [content]]
+  end
+end