feat(01-02): configure NextAuth.js v4 with credentials provider and JWT

- Install next-auth@4, bcryptjs, @types/bcryptjs, @types/jest
- src/types/next-auth.d.ts: extend Session/JWT with tenantId, roles, isSuperAdmin
- src/lib/auth-options.ts: CredentialsProvider + JWT/session callbacks, 24h maxAge
- src/lib/auth.ts: getServerSession() and getCurrentUser() server helpers
- src/app/api/auth/[...nextauth]/route.ts: NextAuth GET/POST handler
- src/middleware.ts: withAuth middleware protecting all routes except /login /signup /api/auth/*

package-lock.json

@@ -9,13 +9,17 @@
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+        "bcryptjs": "^3.0.3",
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@@ -1714,6 +1806,15 @@
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@@ -2157,6 +2258,13 @@
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@@ -2499,6 +2607,13 @@
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@@ -2524,6 +2639,79 @@
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@@ -2568,6 +2756,30 @@
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@@ -3579,6 +3791,15 @@
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@@ -3787,6 +4008,22 @@
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@@ -4802,6 +5048,24 @@
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@@ -5817,6 +6081,220 @@
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+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.3.1.tgz",
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+      "dev": true,
+      "license": "MIT"
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+        "@jest/types": "30.2.0",
+        "@types/stack-utils": "^2.0.3",
+        "chalk": "^4.1.2",
+        "graceful-fs": "^4.2.11",
+        "micromatch": "^4.0.8",
+        "pretty-format": "30.2.0",
+        "slash": "^3.0.0",
+        "stack-utils": "^2.0.6"
+      },
+      "engines": {
+        "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+      }
+    },
+    "node_modules/jest-message-util/node_modules/ansi-styles": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-5.2.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
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+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
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+      "version": "30.2.0",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-30.2.0.tgz",
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+      "dev": true,
+      "license": "MIT",
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+        "ansi-styles": "^5.2.0",
+        "react-is": "^18.3.1"
+      },
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+        "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+      }
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+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.3.1.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jest/types": "30.2.0",
+        "@types/node": "*",
+        "jest-util": "30.2.0"
+      },
+      "engines": {
+        "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+      }
+    },
+    "node_modules/jest-regex-util": {
+      "version": "30.0.1",
+      "resolved": "https://registry.npmjs.org/jest-regex-util/-/jest-regex-util-30.0.1.tgz",
+      "integrity": "sha512-jHEQgBXAgc+Gh4g0p3bCevgRCVRkB4VB70zhoAE48gxeSr1hfUOsM/C2WoJgVL7Eyg//hudYENbm3Ne+/dRVVA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+      }
+    },
+    "node_modules/jest-util": {
+      "version": "30.2.0",
+      "resolved": "https://registry.npmjs.org/jest-util/-/jest-util-30.2.0.tgz",
+      "integrity": "sha512-QKNsM0o3Xe6ISQU869e+DhG+4CK/48aHYdJZGlFQVTjnbvgpcKyxpzk29fGiO7i/J8VENZ+d2iGnSsvmuHywlA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jest/types": "30.2.0",
+        "@types/node": "*",
+        "chalk": "^4.1.2",
+        "ci-info": "^4.2.0",
+        "graceful-fs": "^4.2.11",
+        "picomatch": "^4.0.2"
+      },
+      "engines": {
+        "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+      }
+    },
+    "node_modules/jest-util/node_modules/picomatch": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
+      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/jiti": {
       "version": "2.6.1",
       "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.6.1.tgz",
@@ -5826,6 +6304,15 @@
         "jiti": "lib/jiti-cli.mjs"
       }
     },
+    "node_modules/jose": {
+      "version": "4.15.9",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-4.15.9.tgz",
+      "integrity": "sha512-1vUQX+IdDMVPj4k8kOxgUqlcK518yluMuGZwqlr44FS1ppZB/5GWh4rZG89erpOBOJjU/OBsnCVFfapsRz6nEA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -6428,6 +6915,38 @@
         }
       }
     },
+    "node_modules/next-auth": {
+      "version": "4.24.13",
+      "resolved": "https://registry.npmjs.org/next-auth/-/next-auth-4.24.13.tgz",
+      "integrity": "sha512-sgObCfcfL7BzIK76SS5TnQtc3yo2Oifp/yIpfv6fMfeBOiBJkDWF3A2y9+yqnmJ4JKc2C+nMjSjmgDeTwgN1rQ==",
+      "license": "ISC",
+      "dependencies": {
+        "@babel/runtime": "^7.20.13",
+        "@panva/hkdf": "^1.0.2",
+        "cookie": "^0.7.0",
+        "jose": "^4.15.5",
+        "oauth": "^0.9.15",
+        "openid-client": "^5.4.0",
+        "preact": "^10.6.3",
+        "preact-render-to-string": "^5.1.19",
+        "uuid": "^8.3.2"
+      },
+      "peerDependencies": {
+        "@auth/core": "0.34.3",
+        "next": "^12.2.5 || ^13 || ^14 || ^15 || ^16",
+        "nodemailer": "^7.0.7",
+        "react": "^17.0.2 || ^18 || ^19",
+        "react-dom": "^17.0.2 || ^18 || ^19"
+      },
+      "peerDependenciesMeta": {
+        "@auth/core": {
+          "optional": true
+        },
+        "nodemailer": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.31",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
@@ -6511,6 +7030,12 @@
       "integrity": "sha512-kEV95lFBhQgtogAPlQfJJ0WGVSokvLr/UEoFPiKKOXF7pl98HfUVUD0ejsuTCld/9xH9vogSywZ5KqHzXrZpqg==",
       "license": "MIT"
     },
+    "node_modules/oauth": {
+      "version": "0.9.15",
+      "resolved": "https://registry.npmjs.org/oauth/-/oauth-0.9.15.tgz",
+      "integrity": "sha512-a5ERWK1kh38ExDEfoO6qUHJb32rd7aYmPHuyCu3Fta/cnICvYmgd2uhuKXvPD+PXB+gCEYYEaQdIRAjCOwAKNA==",
+      "license": "MIT"
+    },
     "node_modules/object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -6521,6 +7046,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object-hash": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/object-hash/-/object-hash-2.2.0.tgz",
+      "integrity": "sha512-gScRMn0bS5fH+IuwyIFgnh9zBdo4DV+6GhygmWM9HyNJSgS0hScp1f5vjtm7oIIOiT9trXrShAkLFSc2IqKNgw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.4",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.4.tgz",
@@ -6651,6 +7185,48 @@
       "integrity": "sha512-RdR9FQrFwNBNXAr4GixM8YaRZRJ5PUWbKYbE5eOsrwAjJW0q2REGcf79oYPsLyskQCZG1PLN+S/K1V00joZAoQ==",
       "license": "MIT"
     },
+    "node_modules/oidc-token-hash": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/oidc-token-hash/-/oidc-token-hash-5.2.0.tgz",
+      "integrity": "sha512-6gj2m8cJZ+iSW8bm0FXdGF0YhIQbKrfP4yWTNzxc31U6MOjfEmB1rHvlYvxI1B7t7BCi1F2vYTT6YhtQRG4hxw==",
+      "license": "MIT",
+      "engines": {
+        "node": "^10.13.0 || >=12.0.0"
+      }
+    },
+    "node_modules/openid-client": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/openid-client/-/openid-client-5.7.1.tgz",
+      "integrity": "sha512-jDBPgSVfTnkIh71Hg9pRvtJc6wTwqjRkN88+gCFtYWrlP4Yx2Dsrow8uPi3qLr/aeymPF3o2+dS+wOpglK04ew==",
+      "license": "MIT",
+      "dependencies": {
+        "jose": "^4.15.9",
+        "lru-cache": "^6.0.0",
+        "object-hash": "^2.2.0",
+        "oidc-token-hash": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/openid-client/node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "license": "ISC",
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/openid-client/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "license": "ISC"
+    },
     "node_modules/optionator": {
       "version": "0.9.4",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
@@ -6840,6 +7416,28 @@
         "node": "^10 || ^12 || >=14"
       }
     },
+    "node_modules/preact": {
+      "version": "10.28.4",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.28.4.tgz",
+      "integrity": "sha512-uKFfOHWuSNpRFVTnljsCluEFq57OKT+0QdOiQo8XWnQ/pSvg7OpX5eNOejELXJMWy+BwM2nobz0FkvzmnpCNsQ==",
+      "license": "MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/preact"
+      }
+    },
+    "node_modules/preact-render-to-string": {
+      "version": "5.2.6",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.2.6.tgz",
+      "integrity": "sha512-JyhErpYOvBV1hEPwIxc/fHWXPfnEGdRKxc8gFdAZ7XV4tlzyzG847XAyEZqoDnynP88akM4eaHcSOzNcLWFguw==",
+      "license": "MIT",
+      "dependencies": {
+        "pretty-format": "^3.8.0"
+      },
+      "peerDependencies": {
+        "preact": ">=10"
+      }
+    },
     "node_modules/prelude-ls": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz",
@@ -6850,6 +7448,12 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/pretty-format": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-3.8.0.tgz",
+      "integrity": "sha512-WuxUnVtlWL1OfZFQFuqvnvs6MiAGk9UNsBostyBOB0Is9wb5uRESevA6rnl/rkksXaGX3GzZhPup5d6Vp1nFew==",
+      "license": "MIT"
+    },
     "node_modules/prisma": {
       "version": "6.19.2",
       "resolved": "https://registry.npmjs.org/prisma/-/prisma-6.19.2.tgz",
@@ -7444,6 +8048,16 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/slash": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/source-map-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
@@ -7460,6 +8074,29 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/stack-utils": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-2.0.6.tgz",
+      "integrity": "sha512-XlkWvfIm6RmsWtNJx+uqtKLS8eqFbxUg0ZzLXqY0caEy9l7hruX8IpiDnjsLavoBgqCCR71TqWO8MaXYheJ3RQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "escape-string-regexp": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/stack-utils/node_modules/escape-string-regexp": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-2.0.0.tgz",
+      "integrity": "sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/stackback": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/stackback/-/stackback-0.0.2.tgz",
@@ -8057,6 +8694,15 @@
         "punycode": "^2.1.0"
       }
     },
+    "node_modules/uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/vite": {
       "version": "6.4.1",
       "resolved": "https://registry.npmjs.org/vite/-/vite-6.4.1.tgz",

package.json

@@ -15,13 +15,17 @@
   },
   "dependencies": {
     "@prisma/client": "^6.19.2",
+    "bcryptjs": "^3.0.3",
     "next": "16.1.6",
+    "next-auth": "^4.24.13",
     "prisma": "^6.19.2",
     "react": "19.2.3",
     "react-dom": "19.2.3"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
+    "@types/bcryptjs": "^2.4.6",
+    "@types/jest": "^30.0.0",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",

src/app/api/auth/[...nextauth]/route.ts

@@ -0,0 +1,6 @@
+import NextAuth from "next-auth";
+import { authOptions } from "@/lib/auth-options";
+
+const handler = NextAuth(authOptions);
+
+export { handler as GET, handler as POST };

src/lib/auth-options.ts

@@ -0,0 +1,100 @@
+import { NextAuthOptions } from "next-auth";
+import CredentialsProvider from "next-auth/providers/credentials";
+import bcrypt from "bcryptjs";
+import { prisma } from "@/lib/prisma";
+import { TenantStatus } from "@prisma/client";
+
+export const authOptions: NextAuthOptions = {
+  session: {
+    strategy: "jwt",
+    maxAge: 24 * 60 * 60, // 24 hours
+  },
+  pages: {
+    signIn: "/login",
+  },
+  providers: [
+    CredentialsProvider({
+      name: "credentials",
+      credentials: {
+        email: { label: "Email", type: "email" },
+        password: { label: "Password", type: "password" },
+      },
+      async authorize(credentials) {
+        if (!credentials?.email || !credentials?.password) {
+          return null;
+        }
+
+        const user = await prisma.user.findFirst({
+          where: {
+            email: credentials.email,
+            isActive: true,
+            OR: [
+              { isSuperAdmin: true },
+              {
+                tenant: {
+                  status: TenantStatus.ACTIVE,
+                },
+              },
+            ],
+          },
+          include: {
+            tenant: {
+              select: { status: true },
+            },
+          },
+        });
+
+        if (!user) {
+          return null;
+        }
+
+        const passwordValid = await bcrypt.compare(
+          credentials.password,
+          user.passwordHash
+        );
+
+        if (!passwordValid) {
+          return null;
+        }
+
+        return {
+          id: user.id,
+          email: user.email,
+          tenantId: user.tenantId,
+          roles: user.roles,
+          isSuperAdmin: user.isSuperAdmin,
+          firstName: user.firstName,
+          lastName: user.lastName,
+        };
+      },
+    }),
+  ],
+  callbacks: {
+    async jwt({ token, user }) {
+      // On initial sign-in, user is populated — persist fields into token
+      if (user) {
+        token.id = user.id;
+        token.email = user.email;
+        token.tenantId = user.tenantId;
+        token.roles = user.roles;
+        token.isSuperAdmin = user.isSuperAdmin;
+        token.firstName = user.firstName;
+        token.lastName = user.lastName;
+      }
+      return token;
+    },
+    async session({ session, token }) {
+      // Expose token fields on session.user for client-side access
+      session.user = {
+        id: token.id,
+        email: token.email,
+        tenantId: token.tenantId,
+        roles: token.roles,
+        isSuperAdmin: token.isSuperAdmin,
+        firstName: token.firstName,
+        lastName: token.lastName,
+      };
+      return session;
+    },
+  },
+};

src/lib/auth.ts

@@ -0,0 +1,26 @@
+import { getServerSession as nextAuthGetServerSession } from "next-auth";
+import { authOptions } from "@/lib/auth-options";
+
+/**
+ * Server-side helper to get the current session.
+ * Wraps next-auth's getServerSession with the app's authOptions.
+ *
+ * Usage (in Server Components, Route Handlers, Server Actions):
+ *   const session = await getServerSession();
+ */
+export async function getServerSession() {
+  return nextAuthGetServerSession(authOptions);
+}
+
+/**
+ * Returns the typed session user or null if not authenticated.
+ * Convenience wrapper that extracts session.user.
+ *
+ * Usage:
+ *   const user = await getCurrentUser();
+ *   if (!user) redirect("/login");
+ */
+export async function getCurrentUser() {
+  const session = await getServerSession();
+  return session?.user ?? null;
+}

src/middleware.ts

@@ -0,0 +1,36 @@
+import { withAuth } from "next-auth/middleware";
+import { NextResponse } from "next/server";
+
+export default withAuth(
+  function middleware(req) {
+    // If user is authenticated, allow request through
+    return NextResponse.next();
+  },
+  {
+    callbacks: {
+      authorized({ token }) {
+        // Return true if token exists (user is authenticated)
+        return !!token;
+      },
+    },
+    pages: {
+      signIn: "/login",
+    },
+  }
+);
+
+// Apply middleware to all routes EXCEPT public ones
+export const config = {
+  matcher: [
+    /*
+     * Match all request paths EXCEPT:
+     * - /login (sign-in page)
+     * - /signup (registration page)
+     * - /api/auth/* (NextAuth endpoints)
+     * - /_next/* (Next.js internals)
+     * - /favicon.ico, /robots.txt, /sitemap.xml (static files)
+     * - Image files (.png, .jpg, .jpeg, .gif, .webp, .svg, .ico)
+     */
+    "/((?!login|signup|api/auth|_next/static|_next/image|favicon\\.ico|robots\\.txt|sitemap\\.xml|.*\\.(?:png|jpg|jpeg|gif|webp|svg|ico)).*)",
+  ],
+};

src/types/next-auth.d.ts

@@ -0,0 +1,39 @@
+import { Role } from "@prisma/client";
+import "next-auth";
+import "next-auth/jwt";
+
+declare module "next-auth" {
+  interface Session {
+    user: {
+      id: string;
+      email: string;
+      tenantId: string | null;
+      roles: Role[];
+      isSuperAdmin: boolean;
+      firstName: string;
+      lastName: string;
+    };
+  }
+
+  interface User {
+    id: string;
+    email: string;
+    tenantId: string | null;
+    roles: Role[];
+    isSuperAdmin: boolean;
+    firstName: string;
+    lastName: string;
+  }
+}
+
+declare module "next-auth/jwt" {
+  interface JWT {
+    id: string;
+    email: string;
+    tenantId: string | null;
+    roles: Role[];
+    isSuperAdmin: boolean;
+    firstName: string;
+    lastName: string;
+  }
+}