feat(db): add AdminUser and Code models with migration

- Add AdminUser model (username, passwordHash, role enum)
- Add Code model (code, createdBy, usedByUserId, timestamps)
- Install bcryptjs for password hashing
- Run migration add_admin_and_code

package-lock.json

@@ -12,6 +12,7 @@
         "@aws-sdk/s3-request-presigner": "^3.1073.0",
         "@clerk/nextjs": "^7.5.7",
         "@prisma/client": "^5.22.0",
+        "bcryptjs": "^3.0.3",
         "next": "^15.5.19",
         "qrcode": "^1.5.4",
         "react": "19.2.4",
@@ -20,6 +21,7 @@
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
+        "@types/bcryptjs": "^2.4.6",
         "@types/node": "^20",
         "@types/qrcode": "^1.5.6",
         "@types/react": "^19",
@@ -2062,6 +2064,13 @@
         "tslib": "^2.4.0"
       }
     },
+    "node_modules/@types/bcryptjs": {
+      "version": "2.4.6",
+      "resolved": "https://registry.npmjs.org/@types/bcryptjs/-/bcryptjs-2.4.6.tgz",
+      "integrity": "sha512-9xlo6R2qDs5uixm0bcIqCeMCE6HiQsIyel9KQySStiyqNl2tnj2mP3DX1Nf56MD6KMenNNlBBsy3LJ7gUEQPXQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.9",
       "dev": true,
@@ -3038,6 +3047,15 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/bcryptjs": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/bcryptjs/-/bcryptjs-3.0.3.tgz",
+      "integrity": "sha512-GlF5wPWnSa/X5LKM1o0wz0suXIINz1iHRLvTS+sLyi7XPbe5ycmYI3DlZqVGZZtDgl4DmasFg7gOB3JYbphV5g==",
+      "license": "BSD-3-Clause",
+      "bin": {
+        "bcrypt": "bin/bcrypt"
+      }
+    },
     "node_modules/bowser": {
       "version": "2.14.1",
       "resolved": "https://registry.npmjs.org/bowser/-/bowser-2.14.1.tgz",

package.json

@@ -17,6 +17,7 @@
     "@aws-sdk/s3-request-presigner": "^3.1073.0",
     "@clerk/nextjs": "^7.5.7",
     "@prisma/client": "^5.22.0",
+    "bcryptjs": "^3.0.3",
     "next": "^15.5.19",
     "qrcode": "^1.5.4",
     "react": "19.2.4",
@@ -25,6 +26,7 @@
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@types/bcryptjs": "^2.4.6",
     "@types/node": "^20",
     "@types/qrcode": "^1.5.6",
     "@types/react": "^19",

prisma/migrations/20260729165425_add_admin_and_code/migration.sql

@@ -0,0 +1,40 @@
+-- CreateEnum
+CREATE TYPE "Role" AS ENUM ('SUPER_ADMIN', 'ADMIN');
+
+-- CreateTable
+CREATE TABLE "AdminUser" (
+    "id" TEXT NOT NULL,
+    "username" TEXT NOT NULL,
+    "passwordHash" TEXT NOT NULL,
+    "role" "Role" NOT NULL DEFAULT 'ADMIN',
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "AdminUser_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Code" (
+    "id" TEXT NOT NULL,
+    "code" TEXT NOT NULL,
+    "createdById" TEXT NOT NULL,
+    "usedByUserId" TEXT,
+    "usedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Code_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "AdminUser_username_key" ON "AdminUser"("username");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Code_code_key" ON "Code"("code");
+
+-- CreateIndex
+CREATE INDEX "Code_code_idx" ON "Code"("code");
+
+-- CreateIndex
+CREATE INDEX "Code_usedByUserId_idx" ON "Code"("usedByUserId");
+
+-- AddForeignKey
+ALTER TABLE "Code" ADD CONSTRAINT "Code_createdById_fkey" FOREIGN KEY ("createdById") REFERENCES "AdminUser"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/schema.prisma

@@ -35,4 +35,31 @@ model Image {
   createdAt DateTime @default(now())
 
   @@index([userId])
+}
+
+enum Role {
+  SUPER_ADMIN
+  ADMIN
+}
+
+model AdminUser {
+  id           String   @id @default(cuid())
+  username     String   @unique
+  passwordHash String
+  role         Role     @default(ADMIN)
+  createdAt    DateTime @default(now())
+  createdCodes Code[]
+}
+
+model Code {
+  id           String    @id @default(cuid())
+  code         String    @unique
+  createdById  String
+  createdBy    AdminUser @relation(fields: [createdById], references: [id])
+  usedByUserId String?
+  usedAt       DateTime?
+  createdAt    DateTime  @default(now())
+
+  @@index([code])
+  @@index([usedByUserId])
 }