Initial release v1.0.0 — Nextcloud Collabora Node-RED sidecar

lib/utils.js

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+'use strict';
+
+const path = require('path');
+
+const DEFAULT_OUTPUT_FOLDER = '/Dokument/OfficeOut/';
+
+const MIME_BY_EXT = {
+    pdf: 'application/pdf',
+    png: 'image/png',
+    docx: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+    odt: 'application/vnd.oasis.opendocument.text',
+    html: 'text/html',
+    htm: 'text/html',
+    txt: 'text/plain',
+    xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+    pptx: 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
+};
+
+function normalizeNcPath(ncPath) {
+    if (!ncPath) {
+        return null;
+    }
+    let p = String(ncPath).trim();
+    if (!p.startsWith('/')) {
+        p = '/' + p;
+    }
+    return p.replace(/\/+/g, '/');
+}
+
+function basenameFromNcPath(ncPath) {
+    const p = normalizeNcPath(ncPath);
+    if (!p) {
+        return 'output.bin';
+    }
+    return path.posix.basename(p);
+}
+
+function replaceExtension(filename, newExt) {
+    const base = filename.replace(/\.[^/.]+$/, '');
+    const ext = newExt.startsWith('.') ? newExt.slice(1) : newExt;
+    return `${base}.${ext}`;
+}
+
+function contentTypeForFormat(format) {
+    if (!format) {
+        return 'application/octet-stream';
+    }
+    return MIME_BY_EXT[String(format).toLowerCase()] || 'application/octet-stream';
+}
+
+function defaultDestNcPath(sourceNcPath, format) {
+    const name = replaceExtension(basenameFromNcPath(sourceNcPath), format || 'bin');
+    return normalizeNcPath(DEFAULT_OUTPUT_FOLDER + name);
+}
+
+function resolveDestNcPath(msg, sourceNcPath, format) {
+    if (msg.destNcPath) {
+        return normalizeNcPath(msg.destNcPath);
+    }
+    if (msg.destFolder || msg.destName) {
+        const folder = normalizeNcPath(msg.destFolder || DEFAULT_OUTPUT_FOLDER);
+        const folderWithSlash = folder.endsWith('/') ? folder : folder + '/';
+        const name = msg.destName || replaceExtension(basenameFromNcPath(sourceNcPath), format || 'bin');
+        return normalizeNcPath(folderWithSlash + name);
+    }
+    return defaultDestNcPath(sourceNcPath, format);
+}
+
+function assertSafeDestination(destNcPath, msg) {
+    const dest = normalizeNcPath(destNcPath);
+    const allowedPrefix = normalizeNcPath(DEFAULT_OUTPUT_FOLDER);
+    if (msg.allowOverwrite === true) {
+        return dest;
+    }
+    if (!dest.startsWith(allowedPrefix)) {
+        throw new Error(
+            `destNcPath "${dest}" ligger utanför ${allowedPrefix}. Sätt msg.allowOverwrite=true för att tillåta.`
+        );
+    }
+    return dest;
+}
+
+function getConfig(node) {
+    const cfg = node.configNode;
+    if (!cfg) {
+        throw new Error('Ingen nc-collab-config kopplad');
+    }
+    return cfg;
+}
+
+function filenameFromPath(ncPath) {
+    return basenameFromNcPath(ncPath);
+}
+
+function pickMsgField(msg, ...keys) {
+    for (const key of keys) {
+        if (msg[key] !== undefined && msg[key] !== null && msg[key] !== '') {
+            return msg[key];
+        }
+    }
+    return undefined;
+}
+
+function setError(node, msg, err) {
+    const error = err instanceof Error ? err : new Error(String(err));
+    msg.error = error.message;
+    msg.payload = { error: error.message };
+    node.error(error.message, msg);
+    node.status({ fill: 'red', shape: 'ring', text: error.message.slice(0, 40) });
+    return msg;
+}
+
+function setSuccess(node, msg, text) {
+    node.status({ fill: 'green', shape: 'dot', text: text || 'ok' });
+    return msg;
+}
+
+function clearStatus(node) {
+    node.status({});
+}
+
+module.exports = {
+    DEFAULT_OUTPUT_FOLDER,
+    MIME_BY_EXT,
+    normalizeNcPath,
+    basenameFromNcPath,
+    replaceExtension,
+    contentTypeForFormat,
+    defaultDestNcPath,
+    resolveDestNcPath,
+    assertSafeDestination,
+    getConfig,
+    filenameFromPath,
+    pickMsgField,
+    setError,
+    setSuccess,
+    clearStatus
+};