[style ⌗] make more readable and reuseable

Author: devlopersabbir

src/app.ts

@@ -49,7 +49,7 @@ const main = async () => {
     );
     try {
         /** read data from the csv file */
-        const data = await insert.readingCSVFile();
+        const data = insert.readingCSVFile();
         /** process and write sql code within this method */
         await insert.processingCSVFile(data, fileNameSkipExtension);
         stop();

src/modules/csvTOsql.ts

@@ -13,14 +13,9 @@ export class CsvToSql {
     /**
      * Read CSV File
      */
-    public readingCSVFile = (): Promise<string> => {
-        return new Promise((resolve, reject) => {
-            resolve(
-                readFileSync(`${process.cwd()}/csv/${this.filename}.csv`, {
-                    encoding: "utf8",
-                })
-            );
-            reject(new Error("Fail to read file"));
+    public readingCSVFile = (): string => {
+        return readFileSync(`${process.cwd()}/csv/${this.filename}.csv`, {
+            encoding: "utf8",
         });
     };
 

src/services/index.ts

@@ -3,31 +3,43 @@ import chalk from "chalk";
 import { existsSync, readdirSync } from "fs";
 import { TConvertTo } from "../@types/index.js";
 
-/** Get input files from converting to direcotry */
-export const getInputFiles = (
-    direcotry: TConvertTo
-): string[] | ErrorConstructor => {
-    /** resolve csv folder and return all files that included */
-    switch (direcotry) {
-        case "csv-to-sql":
-            if (!existsSync(path.resolve("csv"))) {
-                console.error(chalk.redBright("CSV directory not found!"));
-                process.exit(0);
-            }
-            return readdirSync(path.resolve("csv"));
-        case "xlsv-to-sql":
-            if (!existsSync(path.resolve("xlsv"))) {
-                console.error(chalk.redBright("XLSV directory not found!"));
-                process.exit(0);
-            }
-            return readdirSync(path.resolve("xlsv"));
+/** Get input files from converting to directory */
+export const getInputFiles = (directory: TConvertTo): string[] | Error => {
+    try {
+        /** Switch based on the provided directory type */
+        switch (directory) {
+            /** Handling 'csv-to-sql' directory case */
+            case "csv-to-sql":
+                const csvPath = path.resolve("csv");
+                /** Check if the CSV directory exists */
+                if (!existsSync(csvPath)) {
+                    /** Throw an error if the directory is not found */
+                    throw new Error("CSV directory not found!");
+                }
+                /** Return an array of file names in the CSV directory */
+                return readdirSync(csvPath);
+            /** Handling 'xlsv-to-sql' directory case */
+            case "xlsv-to-sql":
+                const xlsvPath = path.resolve("xlsv");
+                /** Check if the XLSV directory exists */
+                if (!existsSync(xlsvPath)) {
+                    /** Throw an error if the directory is not found */
+                    throw new Error("XLSV directory not found!");
+                }
+                /** Return an array of file names in the XLSV directory */
+                return readdirSync(xlsvPath);
+
+            /** Handling invalid directory type case */
+            default:
+                /** Throw an error if an invalid directory type is provided */
+                throw new Error("Invalid directory type!");
+        }
+    } catch (error: any) {
+        /** Log the error message in red using chalk */
+        console.error(chalk.redBright(error.message));
+        return error; /** Return the caught error object */
     }
 };
-/**
- * TODO:
- * Create another method for getting files
- * Like: getXlsvFiles() etc
- */
 
 /** convert to csv/xlsv/--/--/ etc export from here... */
 /**