SettingsHelper

src/helpers/settingsHelper.ts

@@ -0,0 +1,57 @@
+import ms from "ms";
+import { EnvSettingString, envSettingsType, SettingString, settingsType } from "../type/settingTypes";
+
+export abstract class SettingHelper {
+  private static settings: { [key in SettingString]?: string } = {};
+  private static envSettings: { [key in EnvSettingString]?: string } = {};
+
+  public static getSetting(key: SettingString): string | number | boolean | ms.StringValue {
+    let settingType = settingsType[key];
+    return this.settings[key] ?? settingType.default ?? "";
+  }
+
+  public static getEnvSetting(key: EnvSettingString): string {
+    let settingType = envSettingsType[key];
+    return this.envSettings[key] ?? settingType.default ?? "";
+  }
+
+  public static async configure() {}
+
+  public static async configurEnv() {
+    this.envSettings = {
+      "database.type": process.env.DB_TYPE,
+      "database.host": process.env.DB_HOST,
+      "database.port": process.env.DB_PORT,
+      "database.name": process.env.DB_NAME,
+      "database.username": process.env.DB_USERNAME,
+      "database.password": process.env.DB_PASSWORD,
+    };
+    this.checkEnvSettings();
+  }
+
+  private static checkEnvSettings() {
+    if (!["mysql", "sqlite", "postgres"].includes(this.envSettings["database.type"]))
+      throw new Error("set valid value to DB_TYPE (mysql|sqlite|postgres)");
+    if (this.checkIfEmptyOrNotString(this.envSettings["database.name"]))
+      throw new Error("set valid value to DB_NAME (name of database or filepath for sqlite)");
+    if (
+      this.checkIfEmptyOrNotString(this.envSettings["database.host"]) &&
+      this.envSettings["database.type"] != "sqlite"
+    )
+      throw new Error("set valid value to DB_HOST");
+    if (
+      this.checkIfEmptyOrNotString(this.envSettings["database.username"]) &&
+      this.envSettings["database.type"] != "sqlite"
+    )
+      throw new Error("set valid value to DB_USERNAME");
+    if (
+      this.checkIfEmptyOrNotString(this.envSettings["database.password"]) &&
+      this.envSettings["database.type"] != "sqlite"
+    )
+      throw new Error("set valid value to DB_PASSWORD");
+  }
+
+  private static checkIfEmptyOrNotString(val: any) {
+    return typeof val != "string" || val == "";
+  }
+}