♻️ Extract method (#2020)

Author: KATO-Hiro

src/lib/components/WorkBooks/TitleTableBodyCell.svelte

@@ -2,6 +2,8 @@
   import { TableBodyCell } from 'svelte-5-ui-lib';
 
   import type { WorkbookList } from '$lib/types/workbook';
+
+  import { getUrlSlugFrom } from '$lib/utils/workbooks';
   import PublicationStatusLabel from '$lib/components/WorkBooks/PublicationStatusLabel.svelte';
 
   interface Props {
@@ -10,12 +12,6 @@
   }
 
   let { paddingLeft = 'pl-2 xs:pl-4', workbook }: Props = $props();
-
-  function getUrlSlugFrom(workbook: WorkbookList): string {
-    const slug = workbook.urlSlug;
-
-    return slug ? slug : workbook.id.toString();
-  }
 </script>
 
 <TableBodyCell class="w-2/5 {paddingLeft} pr-4">

src/lib/components/WorkBooks/WorkBookBaseTable.svelte

@@ -10,7 +10,7 @@
     TableHeadCell,
   } from 'svelte-5-ui-lib';
 
-  import { WorkBookType, type WorkbooksList, type WorkbookList } from '$lib/types/workbook';
+  import { WorkBookType, type WorkbooksList } from '$lib/types/workbook';
   import { TaskGrade, type TaskResults } from '$lib/types/task';
   import type { Roles } from '$lib/types/user';
 
@@ -22,6 +22,7 @@
   import AcceptedCounter from '$lib/components/SubmissionStatus/AcceptedCounter.svelte';
 
   import { canRead, canEdit, canDelete } from '$lib/utils/authorship';
+  import { getUrlSlugFrom } from '$lib/utils/workbooks';
 
   interface Props {
     workbookType: WorkBookType;
@@ -41,12 +42,6 @@
   function getTaskResult(workbookId: number): TaskResults {
     return taskResults?.get(workbookId) ?? [];
   }
-
-  function getUrlSlugFrom(workbook: WorkbookList): string {
-    const slug = workbook.urlSlug;
-
-    return slug ? slug : workbook.id.toString();
-  }
 </script>
 
 <!-- FIXME: 問題集の種類別にコンポーネントを分ける -->

src/lib/utils/workbooks.ts

@@ -1,7 +1,20 @@
 import { Roles } from '$lib/types/user';
 import { isAdmin } from '$lib/utils/authorship';
+import { type WorkbookList } from '$lib/types/workbook';
 
 // 管理者 + ユーザ向けに公開されている場合
 export function canViewWorkBook(role: Roles, isPublished: boolean) {
   return isAdmin(role) || isPublished;
 }
+
+/**
+ * Gets the URL slug for a workbook, falling back to the workbook ID if no slug is available.
+ *
+ * @param workbook - The workbook object containing urlSlug and id properties
+ * @returns The URL slug if available, otherwise the workbook ID as a string
+ */
+export function getUrlSlugFrom(workbook: WorkbookList): string {
+  const slug = workbook.urlSlug;
+
+  return slug ? slug : workbook.id.toString();
+}