move alot to constants, fix html

src/routes/user/login.ts

@@ -1,4 +1,9 @@
 import { echo } from "@atums/echo";
+import {
+	errorMessages,
+	httpStatus,
+	successMessages,
+} from "#environment/constants";
 import { sessionManager } from "#lib/auth";
 import { cassandra } from "#lib/database";
 import { isValidEmail, isValidUsername } from "#lib/validation";
@@ -30,22 +35,21 @@ async function handler(
 			const existingSession = await sessionManager.getSession(request);
 			if (existingSession) {
 				const response: LoginResponse = {
-					code: 409,
+					code: httpStatus.CONFLICT,
 					success: false,
-					error: "User already logged in",
+					error: errorMessages.USER_ALREADY_LOGGED_IN,
 				};
-				return Response.json(response, { status: 409 });
+				return Response.json(response, { status: httpStatus.CONFLICT });
 			}
 		}
 
 		if (!identifier || !password) {
 			const response: LoginResponse = {
-				code: 400,
+				code: httpStatus.BAD_REQUEST,
 				success: false,
-				error:
-					"Missing required fields: identifier (username or email), password",
+				error: errorMessages.MISSING_REQUIRED_FIELDS,
 			};
-			return Response.json(response, { status: 400 });
+			return Response.json(response, { status: httpStatus.BAD_REQUEST });
 		}
 
 		const isEmail = isValidEmail(identifier).valid;
@@ -53,11 +57,11 @@ async function handler(
 
 		if (!isEmail && !isUsername) {
 			const response: LoginResponse = {
-				code: 400,
+				code: httpStatus.BAD_REQUEST,
 				success: false,
 				error: "Invalid identifier format - must be a valid username or email",
 			};
-			return Response.json(response, { status: 400 });
+			return Response.json(response, { status: httpStatus.BAD_REQUEST });
 		}
 
 		let userQuery: string;
@@ -83,43 +87,45 @@ async function handler(
 
 		if (!userResult?.rows || !Array.isArray(userResult.rows)) {
 			const response: LoginResponse = {
-				code: 500,
+				code: httpStatus.INTERNAL_SERVER_ERROR,
 				success: false,
-				error: "Database query failed",
+				error: errorMessages.DATABASE_QUERY_FAILED,
 			};
-			return Response.json(response, { status: 500 });
+			return Response.json(response, {
+				status: httpStatus.INTERNAL_SERVER_ERROR,
+			});
 		}
 
 		if (userResult.rows.length === 0) {
 			const response: LoginResponse = {
-				code: 401,
+				code: httpStatus.UNAUTHORIZED,
 				success: false,
-				error: "Invalid credentials",
+				error: errorMessages.INVALID_CREDENTIALS,
 			};
-			return Response.json(response, { status: 401 });
+			return Response.json(response, { status: httpStatus.UNAUTHORIZED });
 		}
 
 		const user = userResult.rows[0];
 
 		if (!user) {
 			const response: LoginResponse = {
-				code: 401,
+				code: httpStatus.UNAUTHORIZED,
 				success: false,
-				error: "Invalid credentials",
+				error: errorMessages.INVALID_CREDENTIALS,
 			};
 
-			return Response.json(response, { status: 401 });
+			return Response.json(response, { status: httpStatus.UNAUTHORIZED });
 		}
 
 		const isPasswordValid = await Bun.password.verify(password, user.password);
 
 		if (!isPasswordValid) {
 			const response: LoginResponse = {
-				code: 401,
+				code: httpStatus.UNAUTHORIZED,
 				success: false,
-				error: "Invalid credentials",
+				error: errorMessages.INVALID_CREDENTIALS,
 			};
-			return Response.json(response, { status: 401 });
+			return Response.json(response, { status: httpStatus.UNAUTHORIZED });
 		}
 
 		const userAgent = request.headers.get("User-Agent") || "Unknown";
@@ -148,14 +154,14 @@ async function handler(
 		};
 
 		const response: LoginResponse = {
-			code: 200,
+			code: httpStatus.OK,
 			success: true,
-			message: "Login successful",
+			message: successMessages.LOGIN_SUCCESSFUL,
 			user: responseUser,
 		};
 
 		return Response.json(response, {
-			status: 200,
+			status: httpStatus.OK,
 			headers: {
 				"Set-Cookie": sessionCookie,
 			},
@@ -167,11 +173,13 @@ async function handler(
 		});
 
 		const response: LoginResponse = {
-			code: 500,
+			code: httpStatus.INTERNAL_SERVER_ERROR,
 			success: false,
-			error: "Internal server error",
+			error: errorMessages.INTERNAL_SERVER_ERROR,
 		};
-		return Response.json(response, { status: 500 });
+		return Response.json(response, {
+			status: httpStatus.INTERNAL_SERVER_ERROR,
+		});
 	}
 }