feat: centralized constants and enums for project-wide use

src/modules/economy/economy.service.ts

@@ -4,6 +4,7 @@ import { config } from "@/lib/config";
 import { withTransaction } from "@/lib/db";
 import type { Transaction } from "@/lib/types";
 import { UserError } from "@/lib/errors";
+import { TimerType, TransactionType } from "@/lib/constants";
 
 export const economyService = {
     transfer: async (fromUserId: string, toUserId: string, amount: bigint, tx?: Transaction) => {
@@ -48,7 +49,7 @@ export const economyService = {
             await txFn.insert(transactions).values({
                 userId: BigInt(fromUserId),
                 amount: -amount,
-                type: 'TRANSFER_OUT',
+                type: TransactionType.TRANSFER_OUT,
                 description: `Transfer to ${toUserId}`,
             });
 
@@ -56,7 +57,7 @@ export const economyService = {
             await txFn.insert(transactions).values({
                 userId: BigInt(toUserId),
                 amount: amount,
-                type: 'TRANSFER_IN',
+                type: TransactionType.TRANSFER_IN,
                 description: `Transfer from ${fromUserId}`,
             });
 
@@ -74,7 +75,7 @@ export const economyService = {
             const cooldown = await txFn.query.userTimers.findFirst({
                 where: and(
                     eq(userTimers.userId, BigInt(userId)),
-                    eq(userTimers.type, 'COOLDOWN'),
+                    eq(userTimers.type, TimerType.COOLDOWN),
                     eq(userTimers.key, 'daily')
                 ),
             });
@@ -127,7 +128,7 @@ export const economyService = {
             await txFn.insert(userTimers)
                 .values({
                     userId: BigInt(userId),
-                    type: 'COOLDOWN',
+                    type: TimerType.COOLDOWN,
                     key: 'daily',
                     expiresAt: nextReadyAt,
                 })
@@ -140,7 +141,7 @@ export const economyService = {
             await txFn.insert(transactions).values({
                 userId: BigInt(userId),
                 amount: totalReward,
-                type: 'DAILY_REWARD',
+                type: TransactionType.DAILY_REWARD,
                 description: `Daily reward (Streak: ${streak})`,
             });