diff --git a/.env b/.env
index 32f917e..e88e6fc 100644
--- a/.env
+++ b/.env
@@ -1,3 +1,5 @@
 DATABASE_URL=mysql://root:root@localhost:3306/dashboard_template
 
-JWT_SECRET=
\ No newline at end of file
+JWT_SECRET=
+
+ERROR_LOG_PATH=./logs
\ No newline at end of file
diff --git a/bun.lockb b/bun.lockb
index 8228dda..cffb24b 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/env.ts b/env.ts
index 572376e..a7863d8 100644
--- a/env.ts
+++ b/env.ts
@@ -3,7 +3,8 @@ const envVariables = z.object({
     DATABASE_URL: z.string(), 
     JWT_SECRET: z.string(),
     WS_PORT: z.string().optional(),
-    WS_HOST: z.string().optional()
+    WS_HOST: z.string().optional(),
+    ERROR_LOG_PATH: z.string()
 });
 envVariables.parse(process.env);
 
diff --git a/logs/.gitignore b/logs/.gitignore
new file mode 100644
index 0000000..bf0824e
--- /dev/null
+++ b/logs/.gitignore
@@ -0,0 +1 @@
+*.log
\ No newline at end of file
diff --git a/package.json b/package.json
index 7d57c0e..d826b40 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
     "bcrypt": "^5.1.1",
     "client-only": "^0.0.1",
     "clsx": "^2.1.0",
+    "date-fns": "^3.3.1",
     "jsonwebtoken": "^9.0.2",
     "mantine-form-zod-resolver": "^1.1.0",
     "next": "14.1.0",
diff --git a/src/app/api/login/route.ts b/src/app/api/login/route.ts
new file mode 100644
index 0000000..95ee487
--- /dev/null
+++ b/src/app/api/login/route.ts
@@ -0,0 +1,38 @@
+import BaseError from "@/core/error/BaseError";
+import handleCatchApi from "@/core/utils/handleCatchApi";
+import AuthError from "@/modules/auth/error/AuthError";
+import signInSchema from "@/modules/auth/formSchemas/signInSchema";
+import signIn from "@/modules/auth/services/signIn";
+import getTokenFromHeaders from "@/modules/auth/utils/getTokenFromHeaders";
+import { headers } from "next/headers";
+import { NextRequest, NextResponse } from "next/server";
+import { json } from "stream/consumers";
+
+export const dynamic = "force-dynamic";
+
+export async function POST(request: NextRequest) {
+	try {
+		if (request.headers.get("Content-Type") !== "application/json")
+			throw new BaseError({
+				errorCode: "UNSUPPORTED_CONTENT_TYPE",
+				message:
+					"This content type is not supported. Please use application/json instead",
+                statusCode: 400
+			});
+		const data = signInSchema.safeParse(await request.json());
+
+        if (!data.success){
+            throw new AuthError({
+                errorCode: "INVALID_CREDENTIALS",
+                message: "Email or Password does not match",
+                statusCode: 401
+            })
+        }
+
+		const result = await signIn(data.data)
+
+		return NextResponse.json(result);
+	} catch (e) {
+		return handleCatchApi(e)
+	}
+}
diff --git a/src/core/error/BaseError.ts b/src/core/error/BaseError.ts
index 9c82306..6e0fefc 100644
--- a/src/core/error/BaseError.ts
+++ b/src/core/error/BaseError.ts
@@ -1,20 +1,25 @@
-export const BaseErrorCodes = ["UNKOWN_ERROR"] as const;
+import logger from "../logger/Logger";
+
+export const BaseErrorCodes = ["UNKNOWN_ERROR", "UNSUPPORTED_CONTENT_TYPE"] as const;
 
 interface ErrorOptions {
 	message?: string;
 	errorCode: (typeof BaseErrorCodes)[number] | (string & {});
+	statusCode?: number
 }
 
 class BaseError extends Error {
 	public readonly errorCode: (typeof BaseErrorCodes)[number] | (string & {});
+	public readonly statusCode: number;
 
 	constructor(options: ErrorOptions) {
 		super(options.message ?? "Undetermined Error");
-		this.errorCode = options.errorCode ?? "UNKOWN_ERROR";
+		this.errorCode = options.errorCode ?? "UNKNOWN_ERROR";
+		this.statusCode = options.statusCode ?? 500;
 
 		Object.setPrototypeOf(this, new.target.prototype);
 
-		console.error("error:", options)
+		this.saveToLog();
 	}
 
 	getActionResponseObject() {
@@ -26,6 +31,23 @@ class BaseError extends Error {
 			},
 		} as const;
 	}
+
+	getRestApiResponseObject(){
+		return {
+			message: this.message,
+			errorCode: this.errorCode
+		}
+	}
+
+	saveToLog() {
+		const excludedErrorCodes: string[] = [];
+
+		if (excludedErrorCodes.includes(this.errorCode)) {
+			return;
+		}
+
+		logger.error(JSON.stringify({errorCode: this.errorCode, message: this.message, stack: this.stack}))
+	}
 }
 
 export default BaseError;
diff --git a/src/core/logger/Logger.ts b/src/core/logger/Logger.ts
new file mode 100644
index 0000000..d682d3a
--- /dev/null
+++ b/src/core/logger/Logger.ts
@@ -0,0 +1,44 @@
+import { appendFileSync } from "node:fs";
+import { format } from 'date-fns';
+
+class Logger {
+    
+    logDirectory: string;
+
+    readonly severityLevels = {
+        CRITICAL: 'CRITICAL',
+        ERROR: 'ERROR',
+        WARNING: 'WARNING',
+    };
+
+    constructor(){
+        this.logDirectory = `${process.env.ERROR_LOG_PATH}`
+    }
+
+    getLogFileName(isError = false) {
+        // Use a different naming convention for error logs if needed
+        const suffix = isError ? '-error' : '';
+        return `${format(new Date(), 'yyyy-MM-dd')}${suffix}.log`;
+    }
+
+    log(message: string, level = 'info') {
+        const timestamp = format(new Date(), 'yyyy-MM-dd HH:mm:ss');
+        const logMessage = `[${timestamp}] [${level.toUpperCase()}] ${message}\n`;
+        const isError = level === this.severityLevels.ERROR || level === this.severityLevels.CRITICAL || level === this.severityLevels.WARNING;
+        const logFilePath = `${this.logDirectory}/${this.getLogFileName(isError)}`;
+    
+        appendFileSync(logFilePath, logMessage);
+    }
+
+    error(message: string, severity = 'ERROR') {
+        // Ensure the severity level is valid; default to 'ERROR' if not
+        if (!Object.values(this.severityLevels).includes(severity)) {
+          severity = this.severityLevels.ERROR;
+        }
+        this.log(message, severity);
+    }
+}
+
+const logger =  new Logger();
+
+export default logger;
diff --git a/src/core/utils/handleCatchApi.ts b/src/core/utils/handleCatchApi.ts
new file mode 100644
index 0000000..76352ab
--- /dev/null
+++ b/src/core/utils/handleCatchApi.ts
@@ -0,0 +1,22 @@
+import { NextResponse } from "next/server";
+import BaseError from "../error/BaseError";
+
+export default function handleCatchApi(e: unknown): NextResponse {
+	if (e instanceof BaseError) {
+		return NextResponse.json({
+			code: e.errorCode,
+			message: e.message,
+		}, {status: e.statusCode});
+	}
+	if (e instanceof Error) {
+		return NextResponse.json({
+			code: "GENERAL_ERROR",
+			message: e.message,
+		}, {status: 500});
+	}
+
+	return NextResponse.json({
+		code: "GENERAL_ERROR",
+		message: "Unexpected",
+	}, { status: 500 });
+}
diff --git a/src/modules/auth/error/AuthError.ts b/src/modules/auth/error/AuthError.ts
index beee2b2..1d4b585 100644
--- a/src/modules/auth/error/AuthError.ts
+++ b/src/modules/auth/error/AuthError.ts
@@ -7,11 +7,13 @@ export const AuthErrorCodes = [
 	"INVALID_JWT_TOKEN",
 	"JWT_SECRET_EMPTY",
 	"USER_ALREADY_EXISTS",
+	"ALREADY_LOGGED_IN"
 ] as const;
 
 interface AuthErrorOptions {
 	message?: string;
 	errorCode: (typeof AuthErrorCodes)[number] | (string & {});
+	statusCode?: number;
 }
 
 export default class AuthError extends BaseError {
@@ -21,6 +23,7 @@ export default class AuthError extends BaseError {
 		super({
 			errorCode: options.errorCode,
 			message: options.message,
+			statusCode: options.statusCode,
 		});
 
 		this.errorCode = options.errorCode;
diff --git a/src/modules/auth/formSchemas/signInSchema.ts b/src/modules/auth/formSchemas/signInSchema.ts
new file mode 100644
index 0000000..c129677
--- /dev/null
+++ b/src/modules/auth/formSchemas/signInSchema.ts
@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+const signInSchema = z.object({
+    email: z.string().email(),
+    password: z.string().min(1),
+});
+
+export default signInSchema;
\ No newline at end of file
diff --git a/src/modules/auth/utils/getTokenFromHeaders.ts b/src/modules/auth/utils/getTokenFromHeaders.ts
new file mode 100644
index 0000000..51cf8bc
--- /dev/null
+++ b/src/modules/auth/utils/getTokenFromHeaders.ts
@@ -0,0 +1,10 @@
+export default function getTokenFromHeaders(headers: Headers) {
+    const authorizationHeader = headers.get('authorization');
+    if (authorizationHeader) {
+        const parts = authorizationHeader.split(' ');
+        if (parts.length === 2 && parts[0] === 'Bearer') {
+            return parts[1];
+        }
+    }
+    return null;
+}