fix(gitignore): add app.pid to ignore list and ensure cron_update.log is properly formatted

refactor(home): update sellableData state to use array type
fix(account): improve type safety for user data fetching
fix(cart): streamline item removal and purchase handling

.gitignore

@@ -44,3 +44,6 @@ yarn-error.log*
 
 # idea files
 .idea
+
+cron_update.log
+app.pid

generated/prisma/index.d.ts

@@ -12274,15 +12274,16 @@ export namespace Prisma {
   }
 
   export type CartItemWhereUniqueInput = Prisma.AtLeast<{
-    itemId?: string
+    cartId_itemId?: CartItemCartIdItemIdCompoundUniqueInput
     AND?: CartItemWhereInput | CartItemWhereInput[]
     OR?: CartItemWhereInput[]
     NOT?: CartItemWhereInput | CartItemWhereInput[]
+    itemId?: StringFilter<"CartItem"> | string
     quantity?: IntFilter<"CartItem"> | number
     cartId?: StringFilter<"CartItem"> | string
     cart?: XOR<CartScalarRelationFilter, CartWhereInput>
     sellable?: XOR<SellableScalarRelationFilter, SellableWhereInput>
-  }, "itemId">
+  }, "cartId_itemId">
 
   export type CartItemOrderByWithAggregationInput = {
     itemId?: SortOrder
@@ -13532,6 +13533,11 @@ export namespace Prisma {
     search: string
   }
 
+  export type CartItemCartIdItemIdCompoundUniqueInput = {
+    cartId: string
+    itemId: string
+  }
+
   export type CartItemCountOrderByAggregateInput = {
     itemId?: SortOrder
     quantity?: SortOrder

generated/prisma/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "prisma-client-60cecad7f5344b2ab216d0c215477a4a9f0fb3ec9e5201c830e0c4ac3caafb77",
+  "name": "prisma-client-7f3601640bc9191b9770c2fe70db074b0364e5d01ec2def94d81cee0c9a18abc",
   "main": "index.js",
   "types": "index.d.ts",
   "browser": "default.js",

generated/prisma/schema.prisma

@@ -117,12 +117,14 @@ model Cart {
 }
 
 model CartItem {
-  itemId   String @id
+  itemId   String
   quantity Int
   cartId   String
 
   cart     Cart     @relation(fields: [cartId], references: [userId], onDelete: Cascade, onUpdate: Cascade)
   sellable Sellable @relation(fields: [itemId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+
+  @@id([cartId, itemId])
 }
 
 //////////////////////

generated/prisma/wasm.js

@@ -263,7 +263,7 @@ const config = {
       "value": "prisma-client-js"
     },
     "output": {
-      "value": "/var/home/zaremate/Documents/cc-create-shop/generated/prisma",
+      "value": "/var/mnt/f5a90b51-c040-4601-a32c-9629866f15a2/Documents/cc-create-shop/generated/prisma",
       "fromEnvVar": null
     },
     "config": {
@@ -277,7 +277,7 @@ const config = {
       }
     ],
     "previewFeatures": [],
-    "sourceFilePath": "/var/home/zaremate/Documents/cc-create-shop/prisma/schema.prisma",
+    "sourceFilePath": "/var/mnt/f5a90b51-c040-4601-a32c-9629866f15a2/Documents/cc-create-shop/prisma/schema.prisma",
     "isCustomOutput": true
   },
   "relativeEnvPaths": {
@@ -299,8 +299,8 @@ const config = {
       }
     }
   },
-  "inlineSchema": "// This is your Prisma schema file,\n// learn more about it in the docs: https://pris.ly/d/prisma-schema\n\ngenerator client {\n  provider = \"prisma-client-js\"\n  output   = \"../generated/prisma\"\n}\n\ndatasource db {\n  provider = \"mysql\"\n  // NOTE: When using mysql or sqlserver, uncomment the @db.Text annotations in model Account below\n  // Further reading:\n  // https://next-auth.js.org/adapters/prisma#create-the-prisma-schema\n  // https://www.prisma.io/docs/reference/api-reference/prisma-schema-reference#string\n  url      = env(\"DATABASE_URL\")\n}\n\n// Necessary for Next auth\nmodel Account {\n  id                       String  @id @default(cuid())\n  userId                   String\n  type                     String\n  provider                 String\n  providerAccountId        String\n  refresh_token            String? @db.Text\n  access_token             String? // @db.Text\n  expires_at               Int?\n  token_type               String?\n  scope                    String?\n  id_token                 String? // @db.Text\n  session_state            String?\n  user                     User    @relation(fields: [userId], references: [id], onDelete: Cascade)\n  refresh_token_expires_in Int?\n\n  @@unique([provider, providerAccountId])\n}\n\nmodel Session {\n  id           String   @id @default(cuid())\n  sessionToken String   @unique\n  userId       String\n  expires      DateTime\n  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)\n}\n\nmodel User {\n  id            String    @id @default(cuid())\n  name          String?\n  email         String?   @unique\n  emailVerified DateTime?\n  image         String?\n  balance       Float     @default(1000)\n\n  accounts Account[]\n  sessions Session[]\n  shops    Shop[]\n  carts    Cart[]\n  adresses Adress[]\n}\n\nmodel VerificationToken {\n  identifier String\n  token      String   @unique\n  expires    DateTime\n\n  @@unique([identifier, token])\n}\n\n//////////////////////\n// SHOP\n//////////////////////\n\nmodel Shop {\n  id     Int    @id\n  userId String\n  label  String\n\n  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  items     Item[]\n  sellables Sellable[]\n}\n\nmodel Item {\n  item_name String\n  shopId    Int\n  stock     Int\n\n  shop      Shop       @relation(fields: [shopId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  sellables Sellable[]\n\n  @@id([item_name, shopId])\n}\n\nmodel Sellable {\n  id        String  @id @default(cuid())\n  item_name String\n  shopId    Int\n  amount    Int\n  price     Float\n  enabled   Boolean @default(true)\n\n  shop Shop @relation(fields: [shopId], references: [id], onDelete: Cascade)\n  item Item @relation(fields: [item_name, shopId], references: [item_name, shopId], onDelete: Cascade)\n\n  cartItems CartItem[]\n}\n\n//////////////////////\n// CART\n//////////////////////\n\nmodel Cart {\n  userId String @id\n\n  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  cartItems CartItem[]\n}\n\nmodel CartItem {\n  itemId   String @id\n  quantity Int\n  cartId   String\n\n  cart     Cart     @relation(fields: [cartId], references: [userId], onDelete: Cascade, onUpdate: Cascade)\n  sellable Sellable @relation(fields: [itemId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n}\n\n//////////////////////\n// ADDRESS\n//////////////////////\n\nmodel Adress {\n  id     String @id @default(cuid())\n  userId String\n  adress String\n\n  user User @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n}\n",
+  "inlineSchema": "// This is your Prisma schema file,\n// learn more about it in the docs: https://pris.ly/d/prisma-schema\n\ngenerator client {\n  provider = \"prisma-client-js\"\n  output   = \"../generated/prisma\"\n}\n\ndatasource db {\n  provider = \"mysql\"\n  // NOTE: When using mysql or sqlserver, uncomment the @db.Text annotations in model Account below\n  // Further reading:\n  // https://next-auth.js.org/adapters/prisma#create-the-prisma-schema\n  // https://www.prisma.io/docs/reference/api-reference/prisma-schema-reference#string\n  url      = env(\"DATABASE_URL\")\n}\n\n// Necessary for Next auth\nmodel Account {\n  id                       String  @id @default(cuid())\n  userId                   String\n  type                     String\n  provider                 String\n  providerAccountId        String\n  refresh_token            String? @db.Text\n  access_token             String? // @db.Text\n  expires_at               Int?\n  token_type               String?\n  scope                    String?\n  id_token                 String? // @db.Text\n  session_state            String?\n  user                     User    @relation(fields: [userId], references: [id], onDelete: Cascade)\n  refresh_token_expires_in Int?\n\n  @@unique([provider, providerAccountId])\n}\n\nmodel Session {\n  id           String   @id @default(cuid())\n  sessionToken String   @unique\n  userId       String\n  expires      DateTime\n  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)\n}\n\nmodel User {\n  id            String    @id @default(cuid())\n  name          String?\n  email         String?   @unique\n  emailVerified DateTime?\n  image         String?\n  balance       Float     @default(1000)\n\n  accounts Account[]\n  sessions Session[]\n  shops    Shop[]\n  carts    Cart[]\n  adresses Adress[]\n}\n\nmodel VerificationToken {\n  identifier String\n  token      String   @unique\n  expires    DateTime\n\n  @@unique([identifier, token])\n}\n\n//////////////////////\n// SHOP\n//////////////////////\n\nmodel Shop {\n  id     Int    @id\n  userId String\n  label  String\n\n  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  items     Item[]\n  sellables Sellable[]\n}\n\nmodel Item {\n  item_name String\n  shopId    Int\n  stock     Int\n\n  shop      Shop       @relation(fields: [shopId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  sellables Sellable[]\n\n  @@id([item_name, shopId])\n}\n\nmodel Sellable {\n  id        String  @id @default(cuid())\n  item_name String\n  shopId    Int\n  amount    Int\n  price     Float\n  enabled   Boolean @default(true)\n\n  shop Shop @relation(fields: [shopId], references: [id], onDelete: Cascade)\n  item Item @relation(fields: [item_name, shopId], references: [item_name, shopId], onDelete: Cascade)\n\n  cartItems CartItem[]\n}\n\n//////////////////////\n// CART\n//////////////////////\n\nmodel Cart {\n  userId String @id\n\n  user      User       @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n  cartItems CartItem[]\n}\n\nmodel CartItem {\n  itemId   String\n  quantity Int\n  cartId   String\n\n  cart     Cart     @relation(fields: [cartId], references: [userId], onDelete: Cascade, onUpdate: Cascade)\n  sellable Sellable @relation(fields: [itemId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n\n  @@id([cartId, itemId])\n}\n\n//////////////////////\n// ADDRESS\n//////////////////////\n\nmodel Adress {\n  id     String @id @default(cuid())\n  userId String\n  adress String\n\n  user User @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)\n}\n",
-  "inlineSchemaHash": "6067e34ba0a13fe49002e5198964784b3870ee91700e9649c3b9ffe64ee9c688",
+  "inlineSchemaHash": "f1f25ffbae59b74d980dd4ecdf5d9929994691bf2809d9a3468ab2985796fd99",
   "copyEngine": true
 }
 config.dirname = '/'

package-lock.json

@@ -12,9 +12,11 @@
         "@auth/prisma-adapter": "^2.7.2",
         "@prisma/client": "^6.6.0",
         "@t3-oss/env-nextjs": "^0.12.0",
+        "framer-motion": "^12.29.2",
         "next": "^15.2.3",
         "next-auth": "5.0.0-beta.25",
         "react": "^19.0.0",
+        "react-casino": "^0.2.6",
         "react-dom": "^19.0.0",
         "zod": "^3.24.2"
       },
@@ -1054,7 +1056,6 @@
       "integrity": "sha512-gR2EMvfK/aTxsuooaDA32D8v+us/8AAet+C3J1cc04SW35FPdZYgLF+iN4NDLUgAaUGTKdAB0CYenu1TAgGdMg==",
       "hasInstallScript": true,
       "license": "Apache-2.0",
-      "peer": true,
       "engines": {
         "node": ">=18.18"
       },
@@ -1536,7 +1537,6 @@
       "integrity": "sha512-3MbSL37jEchWZz2p2mjntRZtPt837ij10ApxKfgmXCTuHWagYg7iA5bqPw6C8BMPfwidlvfPI/fxOc42HLhcyg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "csstype": "^3.2.2"
       }
@@ -1596,7 +1596,6 @@
       "integrity": "sha512-npiaib8XzbjtzS2N4HlqPvlpxpmZ14FjSJrteZpPxGUaYPlvhzlzUZ4mZyABo0EFrOWnvyd0Xxroq//hKhtAWg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.53.0",
         "@typescript-eslint/types": "8.53.0",
@@ -2083,7 +2082,6 @@
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -3063,7 +3061,6 @@
       "integrity": "sha512-LEyamqS7W5HB3ujJyvi0HQK/dtVINZvd5mAAp9eT5S/ujByGjiZLCzPcHVzuXbpJDJF/cxwHlfceVUDZ2lnSTw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -3654,6 +3651,33 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/framer-motion": {
+      "version": "12.29.2",
+      "resolved": "https://registry.npmjs.org/framer-motion/-/framer-motion-12.29.2.tgz",
+      "integrity": "sha512-lSNRzBJk4wuIy0emYQ/nfZ7eWhqud2umPKw2QAQki6uKhZPKm2hRQHeQoHTG9MIvfobb+A/LbEWPJU794ZUKrg==",
+      "license": "MIT",
+      "dependencies": {
+        "motion-dom": "^12.29.2",
+        "motion-utils": "^12.29.2",
+        "tslib": "^2.4.0"
+      },
+      "peerDependencies": {
+        "@emotion/is-prop-valid": "*",
+        "react": "^18.0.0 || ^19.0.0",
+        "react-dom": "^18.0.0 || ^19.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@emotion/is-prop-valid": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "react-dom": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
@@ -4459,7 +4483,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
       "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/js-yaml": {
@@ -4857,7 +4880,6 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
       "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "js-tokens": "^3.0.0 || ^4.0.0"
@@ -4933,6 +4955,21 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/motion-dom": {
+      "version": "12.29.2",
+      "resolved": "https://registry.npmjs.org/motion-dom/-/motion-dom-12.29.2.tgz",
+      "integrity": "sha512-/k+NuycVV8pykxyiTCoFzIVLA95Nb1BFIVvfSu9L50/6K6qNeAYtkxXILy/LRutt7AzaYDc2myj0wkCVVYAPPA==",
+      "license": "MIT",
+      "dependencies": {
+        "motion-utils": "^12.29.2"
+      }
+    },
+    "node_modules/motion-utils": {
+      "version": "12.29.2",
+      "resolved": "https://registry.npmjs.org/motion-utils/-/motion-utils-12.29.2.tgz",
+      "integrity": "sha512-G3kc34H2cX2gI63RqU+cZq+zWRRPSsNIOjpdl9TN4AQwC4sgwYPl/Q/Obf/d53nOm569T0fYK+tcoSV50BWx8A==",
+      "license": "MIT"
+    },
     "node_modules/ms": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
@@ -5105,7 +5142,6 @@
       "resolved": "https://registry.npmjs.org/preact/-/preact-10.11.3.tgz",
       "integrity": "sha512-eY93IVpod/zG3uMF22Unl8h9KkrcKIRs2EGar8hwLZZDU1lkjph303V9HZBwufh2s736U6VXuhD109LYqPoffg==",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
@@ -5191,7 +5227,6 @@
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
-      "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
@@ -5514,7 +5549,6 @@
       "resolved": "https://registry.npmjs.org/preact/-/preact-10.24.3.tgz",
       "integrity": "sha512-Z2dPnBnMUfyQfSQ+GBdsGa16hz35YmLmtTLhM169uW944hYL6xzTYkJjC07j+Wosz733pMWx0fgON3JNw1jJQA==",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
@@ -5545,7 +5579,6 @@
       "integrity": "sha512-v6UNi1+3hSlVvv8fSaoUbggEM5VErKmmpGA7Pl3HF8V6uKY7rvClBOJlH6yNwQtfTueNkGVpOv/mtWL9L4bgRA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
       },
@@ -5656,7 +5689,6 @@
       "devOptional": true,
       "hasInstallScript": true,
       "license": "Apache-2.0",
-      "peer": true,
       "dependencies": {
         "@prisma/config": "6.19.2",
         "@prisma/engines": "6.19.2"
@@ -5680,7 +5712,6 @@
       "version": "15.8.1",
       "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
       "integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "loose-envify": "^1.4.0",
@@ -5752,7 +5783,32 @@
       "resolved": "https://registry.npmjs.org/react/-/react-19.2.3.tgz",
       "integrity": "sha512-Ku/hhYbVjOQnXDZFv2+RibmLFGwFdeeKHFcOTlrt7xplBnya5OGn/hIRDsqDiSUcfORsDC7MPxwork8jBwsIWA==",
       "license": "MIT",
-      "peer": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/react-casino": {
+      "version": "0.2.6",
+      "resolved": "https://registry.npmjs.org/react-casino/-/react-casino-0.2.6.tgz",
+      "integrity": "sha512-+ZlU9kV5fBZ6gsyi81Ntd5jWQ17XZwAsIMh4TY+42uN3SZyME00Fu+LuuKS+v8npovvSRK+YKuvoceICdOzVmg==",
+      "license": "MIT",
+      "dependencies": {
+        "react": "^16.8.6"
+      },
+      "peerDependencies": {
+        "react": "^16.8.6"
+      }
+    },
+    "node_modules/react-casino/node_modules/react": {
+      "version": "16.14.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.14.0.tgz",
+      "integrity": "sha512-0X2CImDkJGApiAlcf0ODKIneSwBPhqJawOa5wCtKbu7ZECrmS26NvtSILynQ66cgkT/RJ4LidJOc3bUESwmU8g==",
+      "license": "MIT",
+      "dependencies": {
+        "loose-envify": "^1.1.0",
+        "object-assign": "^4.1.1",
+        "prop-types": "^15.6.2"
+      },
       "engines": {
         "node": ">=0.10.0"
       }
@@ -5762,7 +5818,6 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.3.tgz",
       "integrity": "sha512-yELu4WmLPw5Mr/lmeEpox5rw3RETacE++JgHqQzd2dg+YbJuat3jH4ingc+WPZhxaoFzdv9y33G+F7Nl5O0GBg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "scheduler": "^0.27.0"
       },
@@ -5774,7 +5829,6 @@
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
       "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/readdirp": {
@@ -6465,7 +6519,6 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -6615,7 +6668,6 @@
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "devOptional": true,
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -6852,7 +6904,6 @@
       "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
       "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }

package.json

@@ -10,23 +10,25 @@
     "db:migrate": "prisma migrate deploy",
     "db:push": "prisma db push",
     "db:studio": "prisma studio",
-    "dev": "next dev --turbo",
+    "dev": "next dev --turbo -p 3100",
     "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "format:write": "prettier --write \"**/*.{ts,tsx,js,jsx,mdx}\" --cache",
     "postinstall": "prisma generate",
     "lint": "next lint",
     "lint:fix": "next lint --fix",
-    "preview": "next build && next start",
+    "preview": "next build && next start -p 3100",
-    "start": "next start",
+    "start": "next start -p 3100",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@auth/prisma-adapter": "^2.7.2",
     "@prisma/client": "^6.6.0",
     "@t3-oss/env-nextjs": "^0.12.0",
+    "framer-motion": "^12.29.2",
     "next": "^15.2.3",
     "next-auth": "5.0.0-beta.25",
     "react": "^19.0.0",
+    "react-casino": "^0.2.6",
     "react-dom": "^19.0.0",
     "zod": "^3.24.2"
   },

prisma/schema.prisma

@@ -117,12 +117,14 @@ model Cart {
 }
 
 model CartItem {
-  itemId   String @id
+  itemId   String
   quantity Int
   cartId   String
 
   cart     Cart     @relation(fields: [cartId], references: [userId], onDelete: Cascade, onUpdate: Cascade)
   sellable Sellable @relation(fields: [itemId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+
+  @@id([cartId, itemId])
 }
 
 //////////////////////

src/app/api/buy/route.ts

@@ -24,7 +24,10 @@ export async function POST(request: Request) {
 
     // Fetch all cart items with related sellable and item to get shopId
     const cartItemsWithShop = await db.cartItem.findMany({
-      where: { itemId: { in: cart.map((c) => c.id) } },
+      where: {
+        cartId: userId,
+        itemId: { in: cart.map((c) => c.id) },
+      },
       include: {
         sellable: {
           include: {
@@ -49,10 +52,27 @@ export async function POST(request: Request) {
       itemsByShop[shopId] ??= []; // initialize if undefined or null
       itemsByShop[shopId].push({
         id: ci.sellable.item.item_name, // API expects item_name as id
-        quantity: ci.quantity,
+        quantity: ci.quantity * ci.sellable.amount, // total quantity based on cart item quantity and sellable amount
       });
     }
 
+    // Check if user has enough balance for all items
+    const totalCost = cartItemsWithShop.reduce((sum, ci) => {
+      return sum + ci.quantity * ci.sellable.price;
+    }, 0);
+
+    const user = await db.user.findUnique({
+      where: { id: userId },
+      select: { balance: true },
+    });
+
+    if (!user || user.balance < totalCost) {
+      return NextResponse.json(
+        { error: "Insufficient balance" },
+        { status: 400 },
+      );
+    }
+
     console.log(itemsByShop);
 
     // Send requests per shop
@@ -79,6 +99,27 @@ export async function POST(request: Request) {
         );
       }
 
+      // Deduct the total cost from the user's balance
+      await db.user.update({
+        where: { id: userId },
+        data: { balance: { decrement: totalCost } },
+      });
+
+      // Add balance to shop owner
+      console.log("Updating shop owner balance for shop:", shopId);
+      const shop = await db.shop.findUnique({
+        where: { id: Number(shopId) },
+        select: { userId: true },
+      });
+      console.log("Shop owner userId:", shop?.userId);
+      console.log("Total cost to add to shop owner:", totalCost);
+      if (shop) {
+        await db.user.update({
+          where: { id: shop.userId },
+          data: { balance: { increment: totalCost } },
+        });
+      }
+
       // Delete successfully sent items from cart
       const itemIds = items.map((i) => i.id);
       await db.cartItem.deleteMany({

src/app/api/cart/route.ts

@@ -39,29 +39,46 @@ export async function PATCH(request: Request) {
     });
 
     // Check if the item already exists in the cart
-    const existingCartItem = await db.cartItem.findUnique({
+    const existingCartItem = await db.cartItem.findFirst({
-      where: { itemId },
+      where: {
+        cartId: userId,
+        itemId,
+      },
     });
 
     if (existingCartItem) {
-      if (quantity <= 0 && quantity * -1 >= existingCartItem.quantity) {
+      const nextQuantity = existingCartItem.quantity + quantity;
-        await db.cartItem.delete({
+
-          where: { itemId },
+      if (nextQuantity <= 0) {
+        await db.cartItem.deleteMany({
+          where: {
+            cartId: userId,
+            itemId,
+          },
         });
       } else {
-        // Update quantity
+        await db.cartItem.updateMany({
-        await db.cartItem.update({
+          where: {
-          where: { itemId },
+            cartId: userId,
-          data: { quantity: existingCartItem.quantity + quantity },
+            itemId,
+          },
+          data: { quantity: nextQuantity },
         });
       }
     } else {
+      if (quantity < 0) {
+        return NextResponse.json(
+          { error: "Cannot remove an item that is not in the cart" },
+          { status: 400 },
+        );
+      }
+
       // Add new item
       await db.cartItem.create({
         data: {
           itemId,
           quantity,
-          cartId: userId,
+          cartId: cart.userId,
         },
       });
     }

src/app/api/sellable/route.ts

@@ -97,6 +97,10 @@ export async function DELETE(request: Request) {
     return NextResponse.json({ error: "Item not found" }, { status: 404 });
   }
 
+  await db.cartItem.deleteMany({
+    where: { itemId: item.id },
+  });
+
   await db.sellable.delete({
     where: {
       id: item.id,

src/app/api/transfer/route.ts

@@ -0,0 +1,75 @@
+import { NextResponse } from "next/server";
+import { auth } from "~/server/auth";
+import { db } from "~/server/db";
+
+export async function POST(request: Request) {
+  const session = await auth();
+
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+
+  const { toUserId, amount } = (await request.json()) as {
+    toUserId: string;
+    amount: number;
+  };
+
+  if (!toUserId || typeof toUserId !== "string") {
+    return NextResponse.json({ error: "Invalid recipient" }, { status: 400 });
+  }
+
+  if (typeof amount !== "number" || isNaN(amount) || amount <= 0) {
+    return NextResponse.json(
+      { error: "Amount must be a positive number" },
+      { status: 400 },
+    );
+  }
+
+  const fromUserId = session.user.id;
+
+  if (fromUserId === toUserId) {
+    return NextResponse.json(
+      { error: "Cannot transfer to yourself" },
+      { status: 400 },
+    );
+  }
+
+  const [sender, recipient] = await Promise.all([
+    db.user.findUnique({
+      where: { id: fromUserId },
+      select: { id: true, balance: true },
+    }),
+    db.user.findUnique({
+      where: { id: toUserId },
+      select: { id: true, name: true },
+    }),
+  ]);
+
+  if (!sender) {
+    return NextResponse.json({ error: "Sender not found" }, { status: 404 });
+  }
+
+  if (!recipient) {
+    return NextResponse.json({ error: "Recipient not found" }, { status: 404 });
+  }
+
+  if (sender.balance < amount) {
+    return NextResponse.json(
+      { error: "Insufficient balance" },
+      { status: 400 },
+    );
+  }
+
+  await db.$transaction([
+    db.user.update({
+      where: { id: fromUserId },
+      data: { balance: { decrement: amount } },
+    }),
+    db.user.update({
+      where: { id: toUserId },
+      data: { balance: { increment: amount } },
+    }),
+  ]);
+
+  return NextResponse.json({ success: true, amount, to: recipient.name });
+}

src/app/api/user/route.ts

@@ -141,6 +141,22 @@ export async function POST(request: Request) {
   const shopsToCreate = body.shops.filter((s) => !currentShopIds.has(s.id));
 
   if (shopsToCreate.length > 0) {
+    const conflictingShops = await db.shop.findMany({
+      where: {
+        id: { in: shopsToCreate.map((s) => s.id) },
+        NOT: { userId: session.user.id },
+      },
+      select: { id: true },
+    });
+
+    if (conflictingShops.length > 0) {
+      const conflictIds = conflictingShops.map((s) => s.id).join(", ");
+      return NextResponse.json(
+        { error: `Shop ID(s) already claimed by another user: ${conflictIds}` },
+        { status: 409 },
+      );
+    }
+
     await db.shop.createMany({
       data: shopsToCreate.map((s) => ({
         id: s.id,

src/app/api/users/route.ts

@@ -0,0 +1,19 @@
+import { NextResponse } from "next/server";
+import { auth } from "~/server/auth";
+import { db } from "~/server/db";
+
+export async function GET() {
+  const session = await auth();
+
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+
+  const users = await db.user.findMany({
+    where: { id: { not: session.user.id } },
+    select: { id: true, name: true },
+    orderBy: { name: "asc" },
+  });
+
+  return NextResponse.json(users);
+}

src/components/HomeClient.tsx

@@ -8,6 +8,7 @@ import CartButton from "~/components/cart";
 import type { Session } from "next-auth";
 import AccountButton from "./account";
 import SellableItemsButton from "./new_items";
+import TransferButton from "./transfer";
 
 type UserResponse = {
   id: string;
@@ -43,9 +44,7 @@ type Props = {
 export default function HomeClient({ session }: Props) {
   const [query, setQuery] = useState("");
   const [userData, setUserData] = useState<UserResponse | null>(null);
-  const [sellableData, setSellableData] = useState<SellableResponse | null>(
+  const [sellableData, setSellableData] = useState<SellableResponse[]>([]);
-    null,
-  );
   const [loading, setLoading] = useState(true);
 
   // Fetch /api/user once and store globally here
@@ -68,7 +67,7 @@ export default function HomeClient({ session }: Props) {
       setLoading(true);
       const res = await fetch("/api/sellable");
       if (!res.ok) throw new Error("Failed to fetch sellable");
-      const data = (await res.json()) as SellableResponse;
+      const data = (await res.json()) as SellableResponse[];
       setSellableData(data);
     } catch (err) {
       console.error(err);
@@ -104,9 +103,10 @@ export default function HomeClient({ session }: Props) {
     <main className="flex min-h-screen flex-col items-center justify-center bg-linear-to-b from-[#2e026d] to-[#7f3b3b] text-white">
       <div className="absolute top-4 right-4 flex items-center gap-4">
         {userData && (
-          <div className="rounded-full bg-white/10 px-4 py-2 font-semibold">
+          <TransferButton
-            ${userData.balance ?? 0}
+            balance={userData.balance ?? 0}
-          </div>
+            reloadUser={loadUser}
+          />
         )}
         {session?.user && (
           <>

src/components/account.tsx

@@ -37,7 +37,7 @@ export default function AccountButton({ loading }: Props) {
         return false;
       }
 
-      const data = await res.json();
+      const data = (await res.json()) as UserData;
 
       setUserData({
         adresses: data.adresses ?? [],
@@ -83,7 +83,7 @@ export default function AccountButton({ loading }: Props) {
     };
 
     const res = await saveAll(next);
-    if (!res || !res.ok) {
+    if (!res?.ok) {
       console.error("Failed to add address");
       return;
     }
@@ -99,7 +99,7 @@ export default function AccountButton({ loading }: Props) {
     };
 
     const res = await saveAll(next);
-    if (!res || !res.ok) {
+    if (!res?.ok) {
       console.error("Failed to remove address");
       return;
     }
@@ -119,7 +119,7 @@ export default function AccountButton({ loading }: Props) {
     };
 
     const res = await saveAll(next);
-    if (!res || !res.ok) {
+    if (!res?.ok) {
       console.error("Failed to add shop");
       return;
     }
@@ -136,7 +136,7 @@ export default function AccountButton({ loading }: Props) {
     };
 
     const res = await saveAll(next);
-    if (!res || !res.ok) {
+    if (!res?.ok) {
       console.error("Failed to remove shop");
       return;
     }

src/components/cart.tsx

@@ -1,7 +1,5 @@
 "use client";
 
-import type { CartItem } from "generated/prisma";
-import { IMAGES_MANIFEST } from "next/dist/shared/lib/constants";
 import { useEffect, useState, useCallback } from "react";
 
 type Cart = {
@@ -202,12 +200,12 @@ export default function CartButton({
     [dragging],
   );
 
-  const handleMouseRelease = useCallback(async () => {
+  const handleMouseRelease = useCallback(() => {
     if (dragging) {
       const { itemId, quantity } = dragging;
       setDragging(null);
       setSliderActive(null);
-      await removeItem(itemId, quantity);
+      void removeItem(itemId, quantity);
     }
   }, [dragging]);
 
@@ -370,7 +368,12 @@ export default function CartButton({
                   cartItems.length === 0
                 )
                   return;
-                void buyItems(cartItems, selectedAddress);
+                void buyItems(cartItems, selectedAddress).then(async () => {
+                  setCartItems([]);
+                  setTotalQuantity(0);
+                  setIsOpen(false);
+                  await reloadUser();
+                });
               }}
               disabled={buyDisabled}
             >

src/components/new_items.tsx

@@ -109,10 +109,17 @@ export default function SellableItemsButton({
   const addSellable = async () => {
     if (selectedIndex === null || price === "" || amount === "") return;
 
-    const item = items[selectedIndex];
+    const item = availableItems[selectedIndex];
 
     if (!item) return;
 
+    console.log("Adding sellable", {
+      shopId: item.shop.id,
+      itemId: item.item_name,
+      price,
+      amount,
+    });
+
     const res = await fetch("/api/sellable", {
       method: "POST",
       headers: { "Content-Type": "application/json" },
@@ -231,7 +238,7 @@ export default function SellableItemsButton({
     (acc, s) => {
       if (!userShopIds.has(s.shopId)) return acc;
       acc[s.shopId] ??= [];
-      acc[s.shopId].push(s);
+      acc[s.shopId]!.push(s);
       return acc;
     },
     {},
@@ -272,7 +279,7 @@ export default function SellableItemsButton({
                 </p>
               )}
 
-              <div className="space-y-4">
+              <div className="max-h-56 space-y-4 overflow-y-auto rounded-lg pr-1">
                 {Object.entries(sellablesByShop).map(([shopId, items]) => (
                   <div key={shopId} className="rounded-lg bg-white/5 p-3">
                     <h4 className="mb-2 font-semibold">

src/components/transfer.tsx

@@ -0,0 +1,149 @@
+"use client";
+
+import { useState } from "react";
+
+type User = {
+  id: string;
+  name: string | null;
+};
+
+type Props = {
+  balance: number;
+  reloadUser: () => Promise<void>;
+};
+
+export default function TransferButton({ balance, reloadUser }: Props) {
+  const [isOpen, setIsOpen] = useState(false);
+  const [users, setUsers] = useState<User[]>([]);
+  const [toUserId, setToUserId] = useState("");
+  const [amount, setAmount] = useState("");
+  const [error, setError] = useState<string | null>(null);
+  const [sending, setSending] = useState(false);
+
+  const openModal = async () => {
+    setError(null);
+    setAmount("");
+    setToUserId("");
+    try {
+      const res = await fetch("/api/users");
+      if (!res.ok) throw new Error("Failed to load users");
+      const data = (await res.json()) as User[];
+      setUsers(data);
+      if (data[0]) setToUserId(data[0].id);
+      setIsOpen(true);
+    } catch {
+      setError("Could not load users");
+    }
+  };
+
+  const send = async () => {
+    setError(null);
+    const parsed = parseFloat(amount);
+    if (!toUserId) return setError("Select a recipient");
+    if (isNaN(parsed) || parsed <= 0) return setError("Enter a valid amount");
+    if (parsed > balance) return setError("Insufficient balance");
+
+    setSending(true);
+    try {
+      const res = await fetch("/api/transfer", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ toUserId, amount: parsed }),
+      });
+      const data = (await res.json()) as { error?: string; to?: string };
+      if (!res.ok) {
+        setError(data.error ?? "Transfer failed");
+        return;
+      }
+      setIsOpen(false);
+      setAmount("");
+      await reloadUser();
+    } catch {
+      setError("Transfer failed");
+    } finally {
+      setSending(false);
+    }
+  };
+
+  return (
+    <>
+      <button
+        onClick={openModal}
+        className="rounded-full bg-white/10 px-4 py-2 font-semibold transition hover:bg-white/20"
+      >
+        ${balance}
+      </button>
+
+      {isOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center">
+          {/* backdrop */}
+          <div
+            className="absolute inset-0 bg-black/60"
+            onClick={() => setIsOpen(false)}
+          />
+
+          <div className="relative z-10 w-full max-w-sm rounded-xl bg-neutral-900 p-6 text-white shadow-xl">
+            <h2 className="mb-5 text-xl font-bold">Transfer Balance</h2>
+
+            <div className="mb-4">
+              <label className="mb-1 block text-sm font-semibold text-white/70">
+                Recipient
+              </label>
+              <select
+                value={toUserId}
+                onChange={(e) => setToUserId(e.target.value)}
+                className="w-full rounded bg-white/10 px-3 py-2 text-sm text-white focus:outline-none"
+              >
+                {users.map((u) => (
+                  <option key={u.id} value={u.id} className="bg-neutral-800">
+                    {u.name ?? u.id}
+                  </option>
+                ))}
+              </select>
+            </div>
+
+            <div className="mb-5">
+              <label className="mb-1 block text-sm font-semibold text-white/70">
+                Amount{" "}
+                <span className="text-white/40">
+                  (your balance: ${balance})
+                </span>
+              </label>
+              <input
+                type="number"
+                min={1}
+                step={1}
+                value={amount}
+                onChange={(e) => setAmount(e.target.value)}
+                placeholder="0"
+                className="w-full rounded bg-white/10 px-3 py-2 text-sm focus:outline-none"
+              />
+            </div>
+
+            {error && (
+              <p className="mb-3 rounded bg-red-500/20 px-3 py-2 text-sm text-red-300">
+                {error}
+              </p>
+            )}
+
+            <div className="flex gap-2">
+              <button
+                onClick={send}
+                disabled={sending}
+                className="flex-1 rounded bg-purple-600 py-2 font-bold transition hover:bg-purple-700 disabled:opacity-50"
+              >
+                {sending ? "Sending…" : "Send"}
+              </button>
+              <button
+                onClick={() => setIsOpen(false)}
+                className="rounded bg-white/10 px-4 py-2 font-semibold transition hover:bg-white/20"
+              >
+                Cancel
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+    </>
+  );
+}

src/lib/blackjack/engine.ts

@@ -0,0 +1,41 @@
+import crypto from "crypto";
+
+export type Card = {
+  suit: "♠" | "♥" | "♦" | "♣";
+  value: number;
+  label: string;
+};
+
+const suits = ["♠", "♥", "♦", "♣"] as const;
+const labels = [
+  { label: "A", value: 11 },
+  { label: "2", value: 2 },
+  { label: "3", value: 3 },
+  { label: "4", value: 4 },
+  { label: "5", value: 5 },
+  { label: "6", value: 6 },
+  { label: "7", value: 7 },
+  { label: "8", value: 8 },
+  { label: "9", value: 9 },
+  { label: "10", value: 10 },
+  { label: "J", value: 10 },
+  { label: "Q", value: 10 },
+  { label: "K", value: 10 },
+];
+
+export function createDeck(): Card[] {
+  return suits.flatMap((suit) => labels.map((l) => ({ suit, ...l })));
+}
+
+export function shuffle(deck: Card[]) {
+  return deck.sort(() => (crypto.randomInt(0, 2) === 0 ? -1 : 1));
+}
+
+export function calculateHand(hand: Card[]): number {
+  let total = hand.reduce((sum, c) => sum + c.value, 0);
+  let aces = hand.filter((c) => c.label === "A").length;
+
+  while (total > 21 && aces--) total -= 10;
+
+  return total;
+}