chore: improve handling when config.json is missing & fix logger options (#1460)

Reviewed-on: #1460
Co-authored-by: Sainan <63328889+Sainan@users.noreply.github.com>
Co-committed-by: Sainan <63328889+Sainan@users.noreply.github.com>

src/controllers/custom/renameAccountController.ts

@@ -1,6 +1,7 @@
 import { RequestHandler } from "express";
 import { getAccountForRequest, isAdministrator, isNameTaken } from "@/src/services/loginService";
-import { config, saveConfig } from "@/src/services/configService";
+import { config } from "@/src/services/configService";
+import { saveConfig } from "@/src/services/configWatcherService";
 
 export const renameAccountController: RequestHandler = async (req, res) => {
     const account = await getAccountForRequest(req);

src/controllers/custom/updateConfigDataController.ts

@@ -1,5 +1,5 @@
 import { RequestHandler } from "express";
-import { updateConfig } from "@/src/services/configService";
+import { updateConfig } from "@/src/services/configWatcherService";
 import { getAccountForRequest, isAdministrator } from "@/src/services/loginService";
 
 const updateConfigDataController: RequestHandler = async (req, res) => {

src/index.ts

@@ -1,22 +1,30 @@
-import { logger } from "./utils/logger";
+// First, init config.
+import { config, loadConfig } from "@/src/services/configService";
+try {
+    loadConfig();
+} catch (e) {
+    console.log("ERROR: Failed to load config.json. You can copy config.json.example to create your config.json.");
+    process.exit(1);
+}
 
+// Now we can init the logger with the settings provided in the config.
+import { logger } from "@/src/utils/logger";
 logger.info("Starting up...");
 
+// Proceed with normal startup: bring up config watcher service, validate config, connect to MongoDB, and finally start listening for HTTP.
 import http from "http";
 import https from "https";
 import fs from "node:fs";
 import { app } from "./app";
-import { config, validateConfig } from "./services/configService";
-import { registerLogFileCreationListener } from "@/src/utils/logger";
 import mongoose from "mongoose";
 import { Json, JSONStringify } from "json-with-bigint";
+import { validateConfig } from "@/src/services/configWatcherService";
 
 // Patch JSON.stringify to work flawlessly with Bigints.
 JSON.stringify = (obj: Exclude<Json, undefined>, _replacer?: unknown, space?: string | number): string => {
     return JSONStringify(obj, space);
 };
 
-registerLogFileCreationListener();
 validateConfig();
 
 mongoose

src/services/configService.ts

@@ -1,33 +1,13 @@
 import fs from "fs";
-import fsPromises from "fs/promises";
 import path from "path";
 import { repoDir } from "@/src/helpers/pathHelper";
-import { logger } from "@/src/utils/logger";
-
-const configPath = path.join(repoDir, "config.json");
-export const config = JSON.parse(fs.readFileSync(configPath, "utf-8")) as IConfig;
-
-let amnesia = false;
-fs.watchFile(configPath, () => {
-    if (amnesia) {
-        amnesia = false;
-    } else {
-        logger.info("Detected a change to config.json, reloading its contents.");
-
-        // Set all values to undefined now so if the new config.json omits some fields that were previously present, it's correct in-memory.
-        for (const key of Object.keys(config)) {
-            // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
-            (config as any)[key] = undefined;
-        }
-
-        Object.assign(config, JSON.parse(fs.readFileSync(configPath, "utf-8")));
-        validateConfig();
-    }
-});
 
 interface IConfig {
     mongodbUrl: string;
-    logger: ILoggerConfig;
+    logger: {
+        files: boolean;
+        level: string; // "fatal" | "error" | "warn" | "info" | "http" | "debug" | "trace";
+    };
     myAddress: string;
     httpPort?: number;
     httpsPort?: number;
@@ -72,26 +52,23 @@ interface IConfig {
     };
 }
 
-interface ILoggerConfig {
+export const configPath = path.join(repoDir, "config.json");
-    files: boolean;
+
-    level: string; // "fatal" | "error" | "warn" | "info" | "http" | "debug" | "trace";
+export const config: IConfig = {
+    mongodbUrl: "mongodb://127.0.0.1:27017/openWF",
+    logger: {
+        files: true,
+        level: "trace"
+    },
+    myAddress: "localhost"
+};
+
+export const loadConfig = (): void => {
+    // Set all values to undefined now so if the new config.json omits some fields that were previously present, it's correct in-memory.
+    for (const key of Object.keys(config)) {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
+        (config as any)[key] = undefined;
     }
 
-export const updateConfig = async (data: string): Promise<void> => {
+    Object.assign(config, JSON.parse(fs.readFileSync(configPath, "utf-8")));
-    amnesia = true;
-    await fsPromises.writeFile(configPath, data);
-    Object.assign(config, JSON.parse(data));
-};
-
-export const saveConfig = async (): Promise<void> => {
-    amnesia = true;
-    await fsPromises.writeFile(configPath, JSON.stringify(config, null, 2));
-};
-
-export const validateConfig = (): void => {
-    if (typeof config.administratorNames == "string") {
-        logger.info(`Updating config.json to make administratorNames an array.`);
-        config.administratorNames = [config.administratorNames];
-        void saveConfig();
-    }
 };

src/services/configWatcherService.ts

@@ -0,0 +1,39 @@
+import fs from "fs";
+import fsPromises from "fs/promises";
+import { logger } from "../utils/logger";
+import { config, configPath, loadConfig } from "./configService";
+
+let amnesia = false;
+fs.watchFile(configPath, () => {
+    if (amnesia) {
+        amnesia = false;
+    } else {
+        logger.info("Detected a change to config.json, reloading its contents.");
+        try {
+            loadConfig();
+        } catch (e) {
+            logger.error("Failed to reload config.json. Did you delete it?! Execution cannot continue.");
+            process.exit(1);
+        }
+        validateConfig();
+    }
+});
+
+export const validateConfig = (): void => {
+    if (typeof config.administratorNames == "string") {
+        logger.info(`Updating config.json to make administratorNames an array.`);
+        config.administratorNames = [config.administratorNames];
+        void saveConfig();
+    }
+};
+
+export const updateConfig = async (data: string): Promise<void> => {
+    amnesia = true;
+    await fsPromises.writeFile(configPath, data);
+    Object.assign(config, JSON.parse(data));
+};
+
+export const saveConfig = async (): Promise<void> => {
+    amnesia = true;
+    await fsPromises.writeFile(configPath, JSON.stringify(config, null, 2));
+};

src/utils/logger.ts

@@ -104,9 +104,7 @@ export const logger = createLogger({
 
 addColors(logLevels.colors);
 
-export function registerLogFileCreationListener(): void {
 errorLog.on("new", filename => logger.info(`Using error log file: ${filename}`));
 combinedLog.on("new", filename => logger.info(`Using combined log file: ${filename}`));
 errorLog.on("rotate", filename => logger.info(`Rotated error log file: ${filename}`));
 combinedLog.on("rotate", filename => logger.info(`Rotated combined log file: ${filename}`));
-}