feat(server): redirect to home for authorized user

Co-authored-by: Kenneth Trecy Tobias <19201.tobias.kennethtrecy.c@gmail.com>

routes/enhancer/user/log_in.get.ts

@@ -1,8 +1,9 @@
+import type { Request } from "!/types/dependent"
 import type { DocumentProps } from "$/types/server"
 
 import Policy from "!/bases/policy"
 import PageMiddleware from "!/bases/controller-likes/page_middleware"
-import CommonMiddlewareList from "!/middlewares/common_middleware_list"
+import DynamicGatedRedirector from "!/middlewares/miscellaneous/dynamic_gated_redirector"
 
 export default class extends PageMiddleware {
 	get filePath(): string { return __filename }
@@ -15,6 +16,9 @@ export default class extends PageMiddleware {
 	}
 
 	get policy(): Policy {
-		return CommonMiddlewareList.guestOnlyPolicy
+		return new DynamicGatedRedirector((request: Request) => {
+			if (request.user === null) return Promise.resolve(null)
+			return Promise.resolve({ "location": "/" })
+		}) as unknown as Policy
 	}
 }