✨ feat: add helper to detect system preference

src/modules/systemPreference/services/internal/findSystemPreference.service.ts

@@ -0,0 +1,47 @@
+import { AppError } from "../../../../helpers/error/instances/app";
+import { ErrorForwarder } from "../../../../helpers/error/instances/forwarder";
+import { redis } from "../../../../utils/databases/redis/connection";
+import { findSystemPreferenceRepository } from "../repositories/findSystemPreference.repository";
+
+export const findSystemPreferenceService = async (
+  key: string,
+  type: "boolean" | "string" | "number" = "string",
+) => {
+  try {
+    // First, check if the system preference is exists in redis cache
+    const cachedValue = await redis.get(
+      `${process.env.APP_NAME}:configs:${key}`,
+    );
+
+    if (!cachedValue) {
+      // If not exists in cache, fetch from database. If found, return the value and set it to cache, if not found, throw an error
+      const systemPreference = await findSystemPreferenceRepository(key);
+      if (!systemPreference)
+        throw new AppError(404, "System preference not found");
+
+      // and set it to cache for future requests
+      await redis.set(
+        `${process.env.APP_NAME}:configs:${key}`,
+        systemPreference.value,
+      );
+
+      // Return the value from database
+      return parseValue(systemPreference.value, type);
+    } else {
+      return parseValue(cachedValue, type);
+    }
+  } catch (error) {
+    ErrorForwarder(error, 500, "Failed to find system preference");
+  }
+};
+
+const parseValue = (value: string, type: "boolean" | "string" | "number") => {
+  switch (type) {
+    case "boolean":
+      return value === "true";
+    case "number":
+      return Number(value);
+    default:
+      return value;
+  }
+};