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

lib/ocs.js

@@ -0,0 +1,89 @@
+'use strict';
+
+const { requestBuffer } = require('./http-client');
+
+function authHeader(config) {
+    const token = Buffer.from(`${config.username}:${config.password}`).toString('base64');
+    return `Basic ${token}`;
+}
+
+function ocsUrl(config, path, query) {
+    const base = config.nextcloudUrl.replace(/\/$/, '');
+    const q = query || 'format=json';
+    const sep = path.includes('?') ? '&' : '?';
+    return `${base}${path}${sep}${q}`;
+}
+
+function tlsOptions(config) {
+    return config.verifyTls !== false && config.verifyTls !== 'false';
+}
+
+function parseOcsBody(bodyBuffer) {
+    const text = bodyBuffer.toString('utf8');
+    try {
+        const json = JSON.parse(text);
+        const ocs = json.ocs || json;
+        const meta = ocs.meta || {};
+        const statuscode = meta.statuscode ?? meta.statusCode ?? 200;
+        if (statuscode >= 400) {
+            const message = meta.message || meta.status || text.slice(0, 200);
+            throw new Error(`OCS ${statuscode}: ${message}`);
+        }
+        return {
+            statusCode: statuscode,
+            data: ocs.data,
+            raw: json
+        };
+    } catch (err) {
+        if (err.message.startsWith('OCS ')) {
+            throw err;
+        }
+        throw new Error(`OCS-svar kunde inte parsas: ${text.slice(0, 200)}`);
+    }
+}
+
+async function ocsRequest(config, { method = 'GET', path, query, body, headers = {}, contentType }) {
+    const url = ocsUrl(config, path, query);
+    const reqHeaders = {
+        Authorization: authHeader(config),
+        'OCS-APIRequest': 'true',
+        Accept: 'application/json',
+        ...headers
+    };
+
+    let payload;
+    if (body !== undefined) {
+        if (Buffer.isBuffer(body)) {
+            payload = body;
+        } else if (typeof body === 'string') {
+            payload = Buffer.from(body, 'utf8');
+            reqHeaders['Content-Type'] = contentType || 'application/json';
+        } else {
+            payload = Buffer.from(JSON.stringify(body), 'utf8');
+            reqHeaders['Content-Type'] = contentType || 'application/json';
+        }
+        reqHeaders['Content-Length'] = payload.length;
+    }
+
+    const res = await requestBuffer({
+        url,
+        method,
+        headers: reqHeaders,
+        body: payload,
+        rejectUnauthorized: tlsOptions(config)
+    });
+
+    if (res.statusCode === 401 || res.statusCode === 403) {
+        throw new Error(`OCS ${res.statusCode}: kontrollera app-lösenord`);
+    }
+
+    return {
+        httpStatus: res.statusCode,
+        ...parseOcsBody(res.body)
+    };
+}
+
+module.exports = {
+    ocsRequest,
+    ocsUrl
+};