add attatchments tool (#4502)

frontend/src/hooks/tools/addAttachments/useAddAttachmentsOperation.ts

@@ -0,0 +1,37 @@
+import { useTranslation } from 'react-i18next';
+import { useToolOperation, ToolOperationConfig, ToolType } from '../shared/useToolOperation';
+import { createStandardErrorHandler } from '../../../utils/toolErrorHandler';
+import { AddAttachmentsParameters } from './useAddAttachmentsParameters';
+
+const buildFormData = (parameters: AddAttachmentsParameters, file: File): FormData => {
+  const formData = new FormData();
+
+  // Add the main PDF file (single file per request in singleFile mode)
+  if (file) {
+    formData.append("fileInput", file);
+  }
+
+  // Add attachment files
+  (parameters.attachments || []).forEach((attachment) => {
+    if (attachment) formData.append("attachments", attachment);
+  });
+
+  return formData;
+};
+
+// Operation configuration for automation
+export const addAttachmentsOperationConfig: ToolOperationConfig<AddAttachmentsParameters> = {
+  toolType: ToolType.singleFile,
+  buildFormData,
+  operationType: 'addAttachments',
+  endpoint: '/api/v1/misc/add-attachments',
+};
+
+export const useAddAttachmentsOperation = () => {
+  const { t } = useTranslation();
+
+  return useToolOperation<AddAttachmentsParameters>({
+    ...addAttachmentsOperationConfig,
+    getErrorMessage: createStandardErrorHandler(t('addAttachments.error.failed', 'An error occurred while adding attachments to the PDF.'))
+  });
+};

frontend/src/hooks/tools/addAttachments/useAddAttachmentsParameters.ts

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+import { useState } from 'react';
+
+export interface AddAttachmentsParameters {
+  attachments: File[];
+}
+
+const defaultParameters: AddAttachmentsParameters = {
+  attachments: []
+};
+
+export const useAddAttachmentsParameters = () => {
+  const [parameters, setParameters] = useState<AddAttachmentsParameters>(defaultParameters);
+
+  const updateParameter = <K extends keyof AddAttachmentsParameters>(
+    key: K,
+    value: AddAttachmentsParameters[K]
+  ) => {
+    setParameters(prev => ({ ...prev, [key]: value }));
+  };
+
+  const resetParameters = () => {
+    setParameters(defaultParameters);
+  };
+
+  const validateParameters = (): boolean => {
+    return parameters.attachments.length > 0;
+  };
+
+  return {
+    parameters,
+    updateParameter,
+    resetParameters,
+    validateParameters
+  };
+};