From c62adb475279a5a7a8f3b3be62648460f6b59edf Mon Sep 17 00:00:00 2001
From: PrzZiomek2 <pzz64056@gmail.com>
Date: Thu, 2 Apr 2026 17:13:31 +0200
Subject: [PATCH] allow custom breadcrumbs label

Summary: Ref T3092

Reviewers: kuba-orlik

Reviewed By: kuba-orlik

Maniphest Tasks: T3092

Differential Revision: https://hub.sealcode.org/D1681
---
 src/back/routes/common/breadcrumbs.tsx | 48 +++++++++++++-------------
 src/back/routes/hello-page.page.tsx    |  3 ++
 src/back/routes/url-tree.ts            | 33 +++++++++++++++---
 3 files changed, 56 insertions(+), 28 deletions(-)

diff --git a/src/back/routes/common/breadcrumbs.tsx b/src/back/routes/common/breadcrumbs.tsx
index a41e954..f0a9c84 100644
--- a/src/back/routes/common/breadcrumbs.tsx
+++ b/src/back/routes/common/breadcrumbs.tsx
@@ -43,29 +43,29 @@ function arrow_head() {
 	);
 }
 
-export function breadcrumbs(ctx: Context) {
-	return (
-		<div class="breadcrumbs">
-			{get_breadcrumbs_from_path(ctx.path)
-				.map((e, i, all) => {
-					if (!e.actionName) {
-						return "";
-					}
-					if (i == all.length - 1) {
-						return <span>{e.actionName}</span>;
-					}
-					return (
-						<>
-							<a href={e.url}>
-								{i !== 0 ? arrow_tail() : ""}
-								<span>{e.actionName}</span>
-								{arrow_head()}
-							</a>
-						</>
-					);
-				})
-				.filter((e) => e !== "")
-				.join("")}
-		</div>
+export async function breadcrumbs(ctx: Context) {
+	const breadcrumbs = await Promise.all(
+		get_breadcrumbs_from_path(ctx.path).map(async (e, i, all) => {
+			if (!e.actionName) {
+				return "";
+			}
+
+			const breadcrumbLabel = e.breadcrumbLabel?.({ ...ctx });
+			const breadcrumbLabelResult = await breadcrumbLabel;
+
+			if (i == all.length - 1) {
+				return <span>{breadcrumbLabelResult || e.actionName}</span>;
+			}
+			return (
+				<>
+					<a href={e.url}>
+						{i !== 0 ? arrow_tail() : ""}
+						<span>{breadcrumbLabelResult || e.actionName}</span>
+						{arrow_head()}
+					</a>
+				</>
+			);
+		})
 	);
+	return <div class="breadcrumbs">{breadcrumbs.filter((e) => e !== "").join("")}</div>;
 }
diff --git a/src/back/routes/hello-page.page.tsx b/src/back/routes/hello-page.page.tsx
index 34bf7f7..244a612 100644
--- a/src/back/routes/hello-page.page.tsx
+++ b/src/back/routes/hello-page.page.tsx
@@ -2,9 +2,12 @@ import type { Context } from "koa";
 import { TempstreamJSX } from "tempstream";
 import { Page } from "@sealcode/sealgen";
 
+import type { BreadcrumbLabel } from "@sealcode/sealgen";
+
 import html from "src/back/html.js";
 
 export const actionName = "HelloPage";
+export const breadcrumbLabel: BreadcrumbLabel = "Witaj";
 
 export default new (class HelloPagePage extends Page {
 	// eslint-disable-next-line @typescript-eslint/no-unused-vars
diff --git a/src/back/routes/url-tree.ts b/src/back/routes/url-tree.ts
index 864bf82..9b5f92c 100644
--- a/src/back/routes/url-tree.ts
+++ b/src/back/routes/url-tree.ts
@@ -1,12 +1,17 @@
+import * as path from "path";
+import type { Context } from "koa";
 import { url_tree } from "./routes.js";
 import type { URLTree } from "./routes.js";
+import type { BreadcrumbLabel } from "@sealcode/sealgen";
 
 export function get_breadcrumbs_from_path(url: string) {
 	let position: URLTree = url_tree;
 	const elements = url.split("/").filter((e) => e != "");
-	const breadcrumbs: { actionName?: string; url?: string }[] = [
-		{ actionName: "Home", url: "/" },
-	];
+	const breadcrumbs: {
+		actionName?: string;
+		url?: string;
+		breadcrumbLabel?: (ctx: Context) => Promise<string>;
+	}[] = [{ actionName: "Home", url: "/" }];
 	let path_so_far = "";
 	for (const element of elements) {
 		if (position.children[element]) {
@@ -18,7 +23,27 @@ export function get_breadcrumbs_from_path(url: string) {
 			break;
 		}
 		path_so_far += "/" + element;
-		breadcrumbs.push({ actionName: position.actionName, url: path_so_far });
+		const actionName = position.actionName;
+		const modulePath = position.module_path;
+
+		breadcrumbs.push({
+			actionName: actionName,
+			url: path_so_far,
+			breadcrumbLabel: async (ctx: Context) => {
+				// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/consistent-type-assertions
+				const module = (await import(path.resolve(modulePath || "") || "")) as {
+					breadcrumbLabel: BreadcrumbLabel;
+				};
+
+				if (!module.breadcrumbLabel) return actionName || "";
+
+				if (typeof module.breadcrumbLabel === "function") {
+					return module.breadcrumbLabel(ctx);
+				} else {
+					return module.breadcrumbLabel;
+				}
+			},
+		});
 	}
 	return breadcrumbs;
 }