push

mod/loadProviders.js

@@ -0,0 +1,37 @@
+const fs = require('fs');
+const path = require('path');
+
+const PROVIDERS_DIR = path.join(__dirname, '..', 'providers');
+
+function listAll() {
+  return fs
+    .readdirSync(PROVIDERS_DIR)
+    .filter((f) => f.endsWith('.js'))
+    .map((f) => f.slice(0, -3))
+    .sort();
+}
+
+function loadProviders(names) {
+  const providers = [];
+  const loadErrors = {};
+  for (const name of names) {
+    const file = path.join(PROVIDERS_DIR, `${name}.js`);
+    if (!fs.existsSync(file)) {
+      loadErrors[name] = 'not found';
+      continue;
+    }
+    try {
+      const mod = require(file);
+      if (typeof mod.getStreams !== 'function') {
+        loadErrors[name] = 'does not export getStreams()';
+        continue;
+      }
+      providers.push({ name, getStreams: mod.getStreams });
+    } catch (err) {
+      loadErrors[name] = err.message.split('\n')[0];
+    }
+  }
+  return { providers, loadErrors };
+}
+
+module.exports = { listAll, loadProviders, PROVIDERS_DIR };