@nutrient-sdk/dws-mcp-server/dist/dws/sign.js

MCP server for Nutrient DWS Processor API

import FormData from 'form-data';
import { handleApiError, handleFileResponse } from './utils.js';
import { callNutrientApi } from './api.js';
import { resolveReadFilePath, resolveWriteFilePath } from '../fs/sandbox.js';
import fs from 'fs';
import path from 'path';
/**
 * Performs a sign call to the Nutrient DWS API
 */
export async function performSignCall(filePath, outputFilePath, signatureOptions = { signatureType: 'cms', flatten: false }, watermarkImagePath, graphicImagePath) {
    try {
        // We resolve the output path first to fail early
        const resolvedOutputPath = await resolveWriteFilePath(outputFilePath);
        const formData = new FormData();
        await addFileToFormData(formData, 'file', filePath);
        if (signatureOptions) {
            formData.append('data', JSON.stringify(signatureOptions));
        }
        if (watermarkImagePath) {
            await addFileToFormData(formData, 'watermark', watermarkImagePath);
        }
        if (graphicImagePath) {
            await addFileToFormData(formData, 'graphic', graphicImagePath);
        }
        const response = await callNutrientApi('sign', formData);
        return handleFileResponse(response, resolvedOutputPath, 'File signed successfully');
    }
    catch (e) {
        return handleApiError(e);
    }
}
/**
 * Adds an optional file to the form data
 * @param formData The form data to add the file to
 * @param fieldName Name of the field in the form data
 * @param filePath Path to the file to add
 * @returns Object with error information if any
 */
export async function addFileToFormData(formData, fieldName, filePath) {
    try {
        const validatedPath = await resolveReadFilePath(filePath);
        const fileBuffer = await fs.promises.readFile(validatedPath);
        formData.append(fieldName, fileBuffer, { filename: path.basename(validatedPath) });
    }
    catch (error) {
        throw Error(`Error with ${fieldName} image: ${error instanceof Error ? error.message : String(error)}`);
    }
}