feat: add price tax

server/internal/domain/user_cart.go

@@ -2,6 +2,10 @@ package domain
 
 import "errors"
 
+const (
+	Tax = 0.23 // Defines the tax applied to the user cart purchase. It represents a number between 0 and 1.
+)
+
 // User cart errors.
 var (
 	ErrUserCartGameAlreadyExists = errors.New("user cart game already exists") // Returned when a user cart game association already exists.

server/internal/service/service.go

@@ -42,7 +42,7 @@ type DataStore interface {
 	CreateUserCartGame(ctx context.Context, tx pgx.Tx, userID, gameID uuid.UUID) error
 	ListUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUID, filter domain.UserCartPaginatedFilter) (domain.PaginatedResponse[domain.Game], error)
 	DeleteUserCartGame(ctx context.Context, tx pgx.Tx, userID, gameID uuid.UUID) error
-	PurchaseUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUID) error
+	PurchaseUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUID, tax float64) error
 
 	ListUserLibrary(ctx context.Context, tx pgx.Tx, userID uuid.UUID, filter domain.UserLibraryPaginatedFilter) (domain.PaginatedResponse[domain.Game], error)
 	ExistsUserLibraryGame(ctx context.Context, tx pgx.Tx, userID, gameID uuid.UUID) (bool, error)

server/internal/service/user_cart.go

@@ -209,6 +209,8 @@ func (s *service) PurchaseUserCart(ctx context.Context, userID uuid.UUID) error
 			totalPrice += float64(game.Price)
 		}
 
+		totalPrice = totalPrice * (1 + domain.Tax)
+
 		newUserBalance := user.Balance - totalPrice
 		if newUserBalance < 0 {
 			return domain.ErrUserBalanceInsufficient
@@ -221,7 +223,7 @@ func (s *service) PurchaseUserCart(ctx context.Context, userID uuid.UUID) error
 			return err
 		}
 
-		err = s.dataStore.PurchaseUserCart(ctx, tx, userID)
+		err = s.dataStore.PurchaseUserCart(ctx, tx, userID, domain.Tax)
 		if err != nil {
 			return err
 		}

server/internal/store/data/user_cart.go

@@ -145,7 +145,7 @@ func (s *store) DeleteUserCartGame(ctx context.Context, tx pgx.Tx, userID, gameI
 
 // PurchaseUserCart executes a query to delete all the user cart games and insert them in the user library with the
 // specified identifier. It also stores an invoice for the purchased games.
-func (s *store) PurchaseUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUID) error {
+func (s *store) PurchaseUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUID, tax float64) error {
 	_, err := tx.Exec(ctx, `
 		WITH purchasing_user AS (
 			SELECT id, vatin
@@ -170,11 +170,12 @@ func (s *store) PurchaseUserCart(ctx context.Context, tx pgx.Tx, userID uuid.UUI
 			(SELECT id FROM invoice),
 			game_id,
 			(SELECT price FROM games WHERE id = game_id),
-			0,
+			$2,
 			(SELECT vatin FROM publishers WHERE id = (SELECT publisher_id FROM games WHERE id = game_id))
 		FROM purchased_games
 	`,
 		userID,
+		tax,
 	)
 	if err != nil {
 		switch constraintNameFromError(err) {

web/src/components/distribute/games/form/form.tsx

@@ -68,6 +68,7 @@ import { decodeTokenPayload, getToken } from "@/lib/auth";
 import {
   LANGUAGES,
   MISSING_VALUE_SYMBOL,
+  TAX,
   TOAST_MESSAGES,
 } from "@/lib/constants";
 import { Conflict, ContentTooLarge } from "@/lib/errors";
@@ -271,7 +272,7 @@ export function GameForm(props: GameProps) {
       if (props.mode === "add") {
         const newGame: NewGame = {
           title: data.title,
-          price: data.price,
+          price: data.price / (1 + TAX),
           isActive: data.isActive,
           description: data.description,
           ageRating: data.ageRating,
@@ -325,7 +326,7 @@ export function GameForm(props: GameProps) {
 
       const editableGame: EditableGame = {
         title: data.title,
-        price: data.price,
+        price: data.price / (1 + TAX),
         isActive: data.isActive,
         description: data.description,
         ageRating: data.ageRating,

web/src/components/game.tsx

@@ -1,4 +1,4 @@
-import { MISSING_VALUE_SYMBOL } from "@/lib/constants";
+import { MISSING_VALUE_SYMBOL, TAX } from "@/lib/constants";
 import { formatCurrency } from "@/lib/utils";
 
 export function Game(props: {
@@ -24,7 +24,7 @@ export function Game(props: {
         <div className="mt-2 flex items-center gap-2 flex-wrap">
           <p>
             {!Number.isNaN(Number(props.price))
-              ? formatCurrency(props.price)
+              ? formatCurrency(props.price, TAX)
               : MISSING_VALUE_SYMBOL}
           </p>
         </div>

web/src/lib/constants.ts

@@ -309,3 +309,9 @@ export const TO_BE_ANNOUNCED = "To be announced";
  * Minimum age at which the user can be registered on the platform.
  */
 export const MINIMUM_USER_AGE = 16;
+
+/**
+ * Tax applied to the user cart purchase.
+ * It represents a number between 0 and 1.
+ */
+export const TAX = 0.23;

web/src/lib/utils.ts

@@ -19,12 +19,12 @@ export function cn(...classes: ClassValue[]) {
  * @param value Value to be formatted.
  * @returns Formatted value.
  */
-export function formatCurrency(value: number) {
+export function formatCurrency(value: number, tax: number) {
   const currencyFormat = new Intl.NumberFormat("en-US", {
     style: "currency",
     currency: "EUR",
   });
-  return currencyFormat.format(value);
+  return currencyFormat.format(value * (1 + tax));
 }
 
 /**

web/src/routes/_layout/cart.tsx

@@ -11,7 +11,9 @@ import {
   CardHeader,
   CardTitle,
 } from "@/components/ui/card";
+import { TAX } from "@/lib/constants";
 import { cartQueryKey } from "@/lib/query-keys";
+import { formatCurrency } from "@/lib/utils";
 
 function cartQueryOptions() {
   return queryOptions({
@@ -47,16 +49,16 @@ function Component() {
   }
 
   const subtotal = cartItems.reduce((sum, item) => sum + item.price, 0);
-  const tax = subtotal * 0.1; // Assuming 10% tax
-  const total = subtotal + tax;
 
   return (
     <div className="container mx-auto px-4 py-8">
       <div className="flex justify-between items-center mb-8">
         <h1 className="text-3xl font-bold">Your Cart</h1>
         <div className="text-lg">
           Account Balance:{" "}
-          <span className="font-semibold">€{accountBalance.toFixed(2)}</span>
+          <span className="font-semibold">
+            {formatCurrency(accountBalance, 0)}{" "}
+          </span>
         </div>
       </div>
       <div className="flex flex-wrap-reverse gap-8">
@@ -77,7 +79,7 @@ function Component() {
                       <p className="text-sm text-gray-300">{item.developer}</p>
                     </div>
                     <p className="text-lg font-semibold">
-                      €{item.price.toFixed(2)}
+                      {formatCurrency(item.price, TAX)}
                     </p>
                   </div>
                   <div className="flex-1 flex flex-wrap items-center justify-end mt-2">
@@ -110,15 +112,15 @@ function Component() {
             <CardContent className="space-y-2">
               <div className="flex justify-between">
                 <span>Subtotal</span>
-                <span>€{subtotal.toFixed(2)}</span>
+                <span>{formatCurrency(subtotal, 0)}</span>
               </div>
               <div className="flex justify-between">
-                <span>Tax</span>
-                <span>€{tax.toFixed(2)}</span>
+                <span>Tax ({TAX * 100}%)</span>
+                <span>{formatCurrency(subtotal * TAX, 0)}</span>
               </div>
               <div className="flex justify-between font-bold">
                 <span>Total</span>
-                <span>€{total.toFixed(2)}</span>
+                <span>{formatCurrency(subtotal, TAX)}</span>
               </div>
             </CardContent>
             <CardFooter>

web/src/routes/distribute/_layout/games/$gameId.tsx

@@ -15,7 +15,7 @@ import {
 } from "@/components/ui/tooltip";
 import { getPublisherGame } from "@/lib/api";
 import { decodeTokenPayload, getToken } from "@/lib/auth";
-import { MISSING_VALUE_SYMBOL } from "@/lib/constants";
+import { MISSING_VALUE_SYMBOL, TAX, TO_BE_ANNOUNCED } from "@/lib/constants";
 import { BadRequest, NotFound } from "@/lib/errors";
 import { gameQueryKey } from "@/lib/query-keys";
 import { formatCurrency, getLanguageName } from "@/lib/utils";
@@ -115,16 +115,26 @@ function Component() {
       </CardHeader>
       <CardContent className="flex-1 space-y-6">
         <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-          <div>
-            <h3 className="font-semibold mb-1">Price</h3>
-            <p>{formatCurrency(game.price)}</p>
+          <div className="grid grid-cols-2 w-fit gap-2">
+            <div>
+              <h3 className="font-semibold mb-1"> Price </h3>
+              <p> {formatCurrency(game.price, TAX)} </p>
+            </div>
+            <div>
+              <h3 className="font-semibold mb-1 text-muted-foreground">
+                (Tax {TAX * 100}%)
+              </h3>
+              <p className="text-muted-foreground">
+                {formatCurrency(game.price, 0)}
+              </p>
+            </div>
           </div>
           <div>
             <h3 className="font-semibold mb-1">Release Date</h3>
             <p>
               {"releaseDate" in game
                 ? format(game.releaseDate, "dd/MM/yyyy")
-                : "To be announced"}
+                : TO_BE_ANNOUNCED}
             </p>
           </div>
           <div>
@@ -176,7 +186,7 @@ function Component() {
         <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
           <div>
             <h3 className="text-lg font-semibold mb-2">About the Game</h3>
-            <p>{game.description}</p>
+            <p className="whitespace-pre-wrap">{game.description}</p>
           </div>
 
           <div>

web/src/routes/distribute/_layout/games_/$gameId/edit.tsx

@@ -16,6 +16,7 @@ import {
 } from "@/components/ui/card";
 import { getPublisherGame } from "@/lib/api";
 import { decodeTokenPayload, getToken } from "@/lib/auth";
+import { TAX } from "@/lib/constants";
 import { BadRequest, NotFound } from "@/lib/errors";
 import { gameQueryKey } from "@/lib/query-keys";
 
@@ -87,7 +88,7 @@ function Component() {
             features: game.features,
             tags: game.tags,
             languages: game.languages,
-            price: game.price,
+            price: Math.round(game.price * (1 + TAX) * 100) / 100,
             releaseDate:
               "releaseDate" in game ? new Date(game.releaseDate) : undefined,
             title: game.title,