huge changes

services/configPersistence.js

@@ -0,0 +1,105 @@
+const fs = require('fs');
+const path = require('path');
+const { CONFIG } = require('../config');
+
+const ENV_PATH = process.env.ENV_FILE
+  ? path.resolve(process.env.ENV_FILE)
+  : path.resolve(process.cwd(), '.env');
+
+/**
+ * Read the current .env file and parse into a key->value Map.
+ */
+function readEnvFile() {
+  if (!fs.existsSync(ENV_PATH)) return new Map();
+  const lines = fs.readFileSync(ENV_PATH, 'utf8').split('\n');
+  const map = new Map();
+  for (const line of lines) {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith('#')) continue;
+    const idx = line.indexOf('=');
+    if (idx === -1) continue;
+    const key = line.slice(0, idx).trim();
+    const value = line.slice(idx + 1).trim();
+    map.set(key, value);
+  }
+  return map;
+}
+
+/**
+ * Write a Map of key->value back to the .env file,
+ * preserving comments and blank lines.
+ */
+function writeEnvFile(updates) {
+  if (!fs.existsSync(ENV_PATH)) {
+    const lines = [];
+    for (const [k, v] of updates) lines.push(`${k}=${v}`);
+    fs.writeFileSync(ENV_PATH, lines.join('\n') + '\n', 'utf8');
+    return;
+  }
+
+  const raw = fs.readFileSync(ENV_PATH, 'utf8');
+  const lines = raw.split('\n');
+  const written = new Set();
+
+  const result = lines.map(line => {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith('#')) return line;
+    const idx = line.indexOf('=');
+    if (idx === -1) return line;
+    const key = line.slice(0, idx).trim();
+    if (updates.has(key)) {
+      written.add(key);
+      return `${key}=${updates.get(key)}`;
+    }
+    return line;
+  });
+
+  // Append any new keys not already in the file
+  for (const [k, v] of updates) {
+    if (!written.has(k)) result.push(`${k}=${v}`);
+  }
+
+  fs.writeFileSync(ENV_PATH, result.join('\n'), 'utf8');
+}
+
+/**
+ * Apply a flat object of { KEY: value } to both CONFIG and .env.
+ * Returns { applied: string[], errors: string[] }
+ */
+function applyConfigUpdates(updates) {
+  const applied = [];
+  const errors = [];
+
+  for (const [key, rawValue] of Object.entries(updates)) {
+    try {
+      if (rawValue === 'true' || rawValue === 'false') {
+        CONFIG[key] = rawValue === 'true';
+      } else if (!isNaN(rawValue) && rawValue !== '') {
+        CONFIG[key] = Number(rawValue);
+      } else {
+        CONFIG[key] = rawValue;
+      }
+      applied.push(key);
+    } catch (err) {
+      errors.push(`${key}: ${err.message}`);
+    }
+  }
+
+  // Write to .env
+  const envMap = readEnvFile();
+  for (const [key, value] of Object.entries(updates)) {
+    envMap.set(key, String(value));
+  }
+  writeEnvFile(envMap);
+
+  return { applied, errors };
+}
+
+/**
+ * Read all current env values for the settings UI.
+ */
+function readAllConfig() {
+  return readEnvFile();
+}
+
+module.exports = { applyConfigUpdates, readAllConfig, readEnvFile, writeEnvFile };