add multi page layout tool

frontend/src/components/tools/pageLayout/PageLayoutSettings.tsx

@@ -0,0 +1,62 @@
+import React from 'react';
+import { Divider, Select, Stack, Switch } from '@mantine/core';
+import { useTranslation } from 'react-i18next';
+import { PageLayoutParameters } from '../../../hooks/tools/pageLayout/usePageLayoutParameters';
+import { getPagesPerSheetOptions } from './constants';
+
+export default function PageLayoutSettings({
+  parameters,
+  onParameterChange,
+  disabled,
+}: {
+  parameters: PageLayoutParameters;
+  onParameterChange: <K extends keyof PageLayoutParameters>(
+    key: K,
+    value: PageLayoutParameters[K]
+  ) => void;
+  disabled?: boolean;
+}) {
+  const { t } = useTranslation();
+
+  const options = getPagesPerSheetOptions(t);
+  const selected = options.find((o) => o.value === parameters.pagesPerSheet) || options[0];
+
+  return (
+    <Stack gap="sm">
+      <Select
+        label={t('pageLayout.pagesPerSheet', 'Pages per sheet:')}
+        data={options.map(o => ({ value: String(o.value), label: o.label }))}
+        value={String(parameters.pagesPerSheet)}
+        onChange={(v) => onParameterChange('pagesPerSheet', Number(v))}
+        disabled={disabled}
+      />
+
+      {selected && (
+        <div
+          style={{
+            backgroundColor: 'var(--information-text-bg)',
+            color: 'var(--information-text-color)',
+            padding: '8px 12px',
+            borderRadius: '8px',
+            marginTop: '4px',
+            fontSize: '0.75rem',
+            textAlign: 'center',
+          }}
+        >
+          {selected.description}
+        </div>
+      )}
+
+      <Divider />
+
+      <Switch
+        checked={parameters.addBorder}
+        onChange={(e) => onParameterChange('addBorder', e.currentTarget.checked)}
+        label={t('pageLayout.addBorder', 'Add Borders')}
+        disabled={disabled}
+      />
+    </Stack>
+  );
+}
+
+

frontend/src/components/tools/pageLayout/constants.ts

@@ -0,0 +1,37 @@
+import { TFunction } from 'i18next';
+
+export type PagesPerSheetOption = {
+  value: number;
+  label: string;
+  description: string;
+};
+
+export const getPagesPerSheetOptions = (t: TFunction): PagesPerSheetOption[] => [
+  {
+    value: 2,
+    label: '2',
+    description: t('pageLayout.desc.2', 'Place 2 pages side-by-side on a single sheet.')
+  },
+  {
+    value: 3,
+    label: '3',
+    description: t('pageLayout.desc.3', 'Place 3 pages on a single sheet in a single row.')
+  },
+  {
+    value: 4,
+    label: '4',
+    description: t('pageLayout.desc.4', 'Place 4 pages on a single sheet (2 × 2 grid).')
+  },
+  {
+    value: 9,
+    label: '9',
+    description: t('pageLayout.desc.9', 'Place 9 pages on a single sheet (3 × 3 grid).')
+  },
+  {
+    value: 16,
+    label: '16',
+    description: t('pageLayout.desc.16', 'Place 16 pages on a single sheet (4 × 4 grid).')
+  },
+];
+
+

frontend/src/data/useTranslatedToolRegistry.tsx

@@ -19,6 +19,7 @@ import Merge from '../tools/Merge';
 import Repair from "../tools/Repair";
 import AutoRename from "../tools/AutoRename";
 import SingleLargePage from "../tools/SingleLargePage";
+import PageLayout from "../tools/PageLayout";
 import UnlockPdfForms from "../tools/UnlockPdfForms";
 import RemoveCertificateSign from "../tools/RemoveCertificateSign";
 import CertSign from "../tools/CertSign";
@@ -417,11 +418,13 @@ export function useFlatToolRegistry(): ToolRegistry {
       pageLayout: {
         icon: <LocalIcon icon="dashboard-rounded" width="1.5rem" height="1.5rem" />,
         name: t("home.pageLayout.title", "Multi-Page Layout"),
-        component: null,
-
+        component: PageLayout,
         description: t("home.pageLayout.desc", "Merge multiple pages of a PDF document into a single page"),
         categoryId: ToolCategoryId.STANDARD_TOOLS,
         subcategoryId: SubcategoryId.PAGE_FORMATTING,
+        maxFiles: -1,
+        endpoints: ["multi-page-layout"],
+        settingsComponent: React.lazy(() => import("../components/tools/pageLayout/PageLayoutSettings")),
         synonyms: getSynonyms(t, "pageLayout")
       },
       bookletImposition: {

frontend/src/hooks/tools/pageLayout/usePageLayoutOperation.ts

@@ -0,0 +1,33 @@
+import { useTranslation } from 'react-i18next';
+import { ToolType, useToolOperation } from '../shared/useToolOperation';
+import { createStandardErrorHandler } from '../../../utils/toolErrorHandler';
+import { PageLayoutParameters, defaultParameters } from './usePageLayoutParameters';
+
+export const buildPageLayoutFormData = (parameters: PageLayoutParameters, file: File): FormData => {
+  const formData = new FormData();
+  formData.append('fileInput', file);
+  formData.append('pagesPerSheet', String(parameters.pagesPerSheet));
+  formData.append('addBorder', String(parameters.addBorder));
+  return formData;
+};
+
+export const pageLayoutOperationConfig = {
+  toolType: ToolType.singleFile,
+  buildFormData: buildPageLayoutFormData,
+  operationType: 'pageLayout',
+  endpoint: '/api/v1/general/multi-page-layout',
+  defaultParameters,
+} as const;
+
+export const usePageLayoutOperation = () => {
+  const { t } = useTranslation();
+
+  return useToolOperation<PageLayoutParameters>({
+    ...pageLayoutOperationConfig,
+    getErrorMessage: createStandardErrorHandler(
+      t('pageLayout.error.failed', 'An error occurred while creating the multi-page layout.')
+    )
+  });
+};
+
+

frontend/src/hooks/tools/pageLayout/usePageLayoutParameters.ts

@@ -0,0 +1,23 @@
+import { BaseParameters } from '../../../types/parameters';
+import { useBaseParameters, BaseParametersHook } from '../shared/useBaseParameters';
+
+export interface PageLayoutParameters extends BaseParameters {
+  pagesPerSheet: number;
+  addBorder: boolean;
+}
+
+export const defaultParameters: PageLayoutParameters = {
+  pagesPerSheet: 4,
+  addBorder: false,
+};
+
+export type PageLayoutParametersHook = BaseParametersHook<PageLayoutParameters>;
+
+export const usePageLayoutParameters = (): PageLayoutParametersHook => {
+  return useBaseParameters<PageLayoutParameters>({
+    defaultParameters,
+    endpointName: 'multi-page-layout',
+  });
+};
+
+

frontend/src/tools/PageLayout.tsx

@@ -0,0 +1,57 @@
+import { useTranslation } from 'react-i18next';
+import { createToolFlow } from '../components/tools/shared/createToolFlow';
+import { useBaseTool } from '../hooks/tools/shared/useBaseTool';
+import { BaseToolProps, ToolComponent } from '../types/tool';
+import { usePageLayoutParameters } from '../hooks/tools/pageLayout/usePageLayoutParameters';
+import { usePageLayoutOperation } from '../hooks/tools/pageLayout/usePageLayoutOperation';
+import PageLayoutSettings from '../components/tools/pageLayout/PageLayoutSettings';
+
+const PageLayout = (props: BaseToolProps) => {
+  const { t } = useTranslation();
+
+  const base = useBaseTool(
+    'pageLayout',
+    usePageLayoutParameters,
+    usePageLayoutOperation,
+    props
+  );
+
+  return createToolFlow({
+    files: {
+      selectedFiles: base.selectedFiles,
+      isCollapsed: base.hasResults,
+    },
+    steps: [
+      {
+        title: 'Settings',
+        isCollapsed: base.settingsCollapsed,
+        onCollapsedClick: base.settingsCollapsed ? base.handleSettingsReset : undefined,
+        content: (
+          <PageLayoutSettings
+            parameters={base.params.parameters}
+            onParameterChange={base.params.updateParameter}
+            disabled={base.endpointLoading}
+          />
+        ),
+      },
+    ],
+    executeButton: {
+      text: t('pageLayout.submit', 'Create Layout'),
+      isVisible: !base.hasResults,
+      loadingText: t('loading'),
+      onClick: base.handleExecute,
+      disabled: !base.params.validateParameters() || !base.hasFiles || !base.endpointEnabled,
+    },
+    review: {
+      isVisible: base.hasResults,
+      operation: base.operation,
+      title: t('pageLayout.title', 'Multi Page Layout Results'),
+      onFileClick: base.handleThumbnailClick,
+      onUndo: base.handleUndo,
+    },
+  });
+};
+
+export default PageLayout as ToolComponent;
+
+