Load local MariaDB settings from env

src/config.js

@@ -5,6 +5,7 @@ export function loadConfig({ configPath = "config/local.json", dryRun } = {}) {
   const localConfig = readJsonFile(configPath);
   const exampleConfig = readJsonFile("config/local.example.json");
   const config = mergeConfig(exampleConfig, localConfig);
+  const env = readEnvFile(".env");
 
   const appMode = String(config.appMode || "dry-run").toLowerCase();
   const resolvedDryRun = dryRun === undefined ? appMode !== "live" : Boolean(dryRun);
@@ -26,15 +27,15 @@ export function loadConfig({ configPath = "config/local.json", dryRun } = {}) {
       password: config.endpoint?.password || "",
     },
     database: {
-      driver: String(config.database?.driver || "endpoint").toLowerCase(),
+      driver: String(env.DB_DRIVER || config.database?.driver || "endpoint").toLowerCase(),
-      mode: String(config.database?.mode || "local").toLowerCase(),
+      mode: String(env.DB_MODE || config.database?.mode || "local").toLowerCase(),
-      allowWrites: Boolean(config.database?.allowWrites),
+      allowWrites: parseBoolean(env.DB_ALLOW_WRITES, config.database?.allowWrites),
-      host: config.database?.host || "127.0.0.1",
+      host: env.DB_HOST || config.database?.host || "127.0.0.1",
-      port: Number(config.database?.port || 3306),
+      port: Number(env.DB_PORT || config.database?.port || 3306),
-      name: config.database?.name || "catalog_maker_test",
+      name: env.DB_NAME || config.database?.name || "catalog_maker_test",
-      user: config.database?.user || "catalog_maker",
+      user: env.DB_USER || config.database?.user || "catalog_maker",
-      password: config.database?.password || "",
+      password: env.DB_PASSWORD || config.database?.password || "",
-      connectionLimit: Number(config.database?.connectionLimit || 5),
+      connectionLimit: Number(env.DB_CONNECTION_LIMIT || config.database?.connectionLimit || 5),
     },
   };
 }
@@ -47,6 +48,26 @@ function readJsonFile(filePath) {
   return JSON.parse(fs.readFileSync(filePath, "utf8"));
 }
 
+function readEnvFile(filePath) {
+  if (!fs.existsSync(filePath)) return {};
+
+  return Object.fromEntries(
+    fs.readFileSync(filePath, "utf8")
+      .split(/\r?\n/)
+      .map((line) => line.trim())
+      .filter((line) => line && !line.startsWith("#") && line.includes("="))
+      .map((line) => {
+        const separator = line.indexOf("=");
+        return [line.slice(0, separator).trim(), line.slice(separator + 1).trim()];
+      }),
+  );
+}
+
+function parseBoolean(value, fallback = false) {
+  if (value === undefined) return Boolean(fallback);
+  return ["1", "true", "yes", "on"].includes(String(value).toLowerCase());
+}
+
 function mergeConfig(base, override) {
   return {
     ...base,

src/db/mariadb-client.js

@@ -57,7 +57,7 @@ export async function executeMariaDbWrite(config, sql) {
   }
 }
 
-async function getPool(config) {
+function getPool(config) {
   if (!pool) {
     pool = mariadb.createPool({
       host: config.database.host,