Remove circular dependency

src/main.zig

@@ -21,8 +21,8 @@ pub const routes = [_]Route{
 const this_scheme = "http";
 const this_host = "localhost:8080";
 
-fn getUser(ctx: *http.Context) anyerror!void {
-    const id_str = ctx.request.arg("id");
+fn getUser(ctx: *http.Context, route: *const router.Route) anyerror!void {
+    const id_str = route.arg("id", ctx.request.path);
 
     const host = ctx.request.headers.get("host") orelse {
         try ctx.response.statusOnly(400);
@@ -52,7 +52,7 @@ fn getUser(ctx: *http.Context) anyerror!void {
 
 fn staticString(comptime str: []const u8) Route.Handler {
     return (struct {
-        fn func(ctx: *http.Context) anyerror!void {
+        fn func(ctx: *http.Context, _: *const router.Route) anyerror!void {
             try ctx.response.headers.put("Content-Type", "text/plain");
             try ctx.response.write(200, str);
         }

src/router.zig

@@ -11,7 +11,7 @@ pub const Route = struct {
         literal: []const u8,
     };
 
-    pub const Handler = fn (*Context) callconv(.Async) anyerror!void;
+    pub const Handler = fn (*Context, *const Route) callconv(.Async) anyerror!void;
 
     fn normalize(comptime path: []const u8) []const u8 {
         var arr: [path.len]u8 = undefined;
@@ -159,7 +159,7 @@ pub fn routeRequest(ctx: *Context) !void {
 
             var buf = try ctx.allocator.allocWithOptions(u8, @frameSize(route.handler), 8, null);
             defer ctx.allocator.free(buf);
-            return await @asyncCall(buf, {}, route.handler, .{ctx});
+            return await @asyncCall(buf, {}, route.handler, .{ ctx, route });
         }
     }