feat: Implement student CRUD operations in admin panel with dedicated API routes and updated Prisma schema.

prisma/schema.prisma

@@ -19,12 +19,12 @@ model Branch {
   name        String
   address     String?
   phone       String?
-  instructors Instructor[] // Implicit many-to-many
+  createdAt   DateTime     @default(now())
+  updatedAt   DateTime     @updatedAt
   classes     DanceClass[]
   lessons     Lesson[]
   students    Student[]
-  createdAt   DateTime     @default(now())
+  instructors Instructor[] @relation("BranchToInstructor")
-  updatedAt   DateTime     @updatedAt
 }
 
 model Instructor {
@@ -32,41 +32,41 @@ model Instructor {
   name      String
   bio       String?
   phone     String?
-  branches  Branch[]     // Implicit many-to-many
-  classes   DanceClass[]
-  lessons   Lesson[]
   createdAt DateTime     @default(now())
   updatedAt DateTime     @updatedAt
+  classes   DanceClass[]
+  lessons   Lesson[]
+  branches  Branch[]     @relation("BranchToInstructor")
 }
 
 model DanceClass {
-  id           String     @id @default(uuid())
+  id           String      @id @default(uuid())
   name         String
   description  String?
   branchId     String
-  branch       Branch     @relation(fields: [branchId], references: [id])
   instructorId String?
+  createdAt    DateTime    @default(now())
+  updatedAt    DateTime    @updatedAt
   instructor   Instructor? @relation(fields: [instructorId], references: [id])
-  lessons      Lesson[]
+  branch       Branch      @relation(fields: [branchId], references: [id])
   fees         Fee[]
-  createdAt    DateTime   @default(now())
+  lessons      Lesson[]
-  updatedAt    DateTime   @updatedAt
 }
 
 model Lesson {
-  id           String     @id @default(uuid())
+  id           String      @id @default(uuid())
-  name         String?    // Optional name e.g. "Special Workshop"
+  name         String?
   startTime    DateTime
   endTime      DateTime
-  type         String     // GROUP, PRIVATE
+  type         String
   branchId     String
-  branch       Branch     @relation(fields: [branchId], references: [id])
   instructorId String
-  instructor   Instructor @relation(fields: [instructorId], references: [id])
   classId      String?
+  createdAt    DateTime    @default(now())
+  updatedAt    DateTime    @updatedAt
   class        DanceClass? @relation(fields: [classId], references: [id])
-  createdAt    DateTime   @default(now())
+  instructor   Instructor  @relation(fields: [instructorId], references: [id])
-  updatedAt    DateTime   @updatedAt
+  branch       Branch      @relation(fields: [branchId], references: [id])
 }
 
 model Fee {
@@ -74,11 +74,11 @@ model Fee {
   name      String
   amount    Float
   currency  String      @default("TRY")
-  type      String      // MONTHLY, PER_LESSON, PACKAGE
+  type      String
   classId   String?
-  class     DanceClass? @relation(fields: [classId], references: [id])
   createdAt DateTime    @default(now())
   updatedAt DateTime    @updatedAt
+  class     DanceClass? @relation(fields: [classId], references: [id])
 }
 
 model Student {
@@ -88,7 +88,7 @@ model Student {
   phone     String
   birthDate DateTime
   branchId  String?
-  branch    Branch?  @relation(fields: [branchId], references: [id])
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
+  branch    Branch?  @relation(fields: [branchId], references: [id])
 }

src/app/admin/register/RegisterForm.tsx

@@ -1,6 +1,7 @@
 'use client';
 import { useState } from 'react';
-import styles from './register.module.css';
+import { useRouter } from 'next/navigation';
+import styles from '../branches/branches.module.css';
 
 export function RegisterForm({ branches }: { branches: any[] }) {
     const [formData, setFormData] = useState({
@@ -10,12 +11,10 @@ export function RegisterForm({ branches }: { branches: any[] }) {
         birthDate: '',
         branchId: ''
     });
-    const [status, setStatus] = useState<'idle' | 'success' | 'error'>('idle');
+    const router = useRouter();
 
     const handleSubmit = async (e: React.FormEvent) => {
         e.preventDefault();
-        setStatus('idle');
-
         const res = await fetch('/api/register', {
             method: 'POST',
             body: JSON.stringify(formData),
@@ -23,10 +22,8 @@ export function RegisterForm({ branches }: { branches: any[] }) {
         });
 
         if (res.ok) {
-            setStatus('success');
             setFormData({ name: '', email: '', phone: '', birthDate: '', branchId: '' });
-        } else {
+            router.refresh();
-            setStatus('error');
         }
     };
 
@@ -35,41 +32,38 @@ export function RegisterForm({ branches }: { branches: any[] }) {
     };
 
     return (
-        <form onSubmit={handleSubmit} className={styles.card}>
+        <form onSubmit={handleSubmit} className={styles.form}>
-            {status === 'success' && <div className={styles.success}>Kayıt başarıyla oluşturuldu!</div>}
+            <div className={styles.inputGroup}>
-            {status === 'error' && <div className={styles.error}>Bir hata oluştu. Lütfen tekrar deneyin.</div>}
+                <label>Ad Soyad</label>
-
-            <div className={styles.formGroup}>
-                <label className={styles.label}>Ad Soyad</label>
                 <input name="name" value={formData.name} onChange={handleChange} className={styles.input} required placeholder="Adınız" />
             </div>
 
-            <div className={styles.formGroup}>
+            <div className={styles.inputGroup}>
-                <label className={styles.label}>Email (İsteğe bağlı)</label>
+                <label>Email</label>
                 <input name="email" type="email" value={formData.email} onChange={handleChange} className={styles.input} placeholder="ornek@email.com" />
             </div>
 
-            <div className={styles.formGroup}>
+            <div className={styles.inputGroup}>
-                <label className={styles.label}>Telefon</label>
+                <label>Telefon</label>
                 <input name="phone" type="tel" value={formData.phone} onChange={handleChange} className={styles.input} required placeholder="5XX XXX XX XX" />
             </div>
 
-            <div className={styles.formGroup}>
+            <div className={styles.inputGroup}>
-                <label className={styles.label}>Doğum Tarihi</label>
+                <label>Doğum Tarihi</label>
                 <input name="birthDate" type="date" value={formData.birthDate} onChange={handleChange} className={styles.input} required />
             </div>
 
-            <div className={styles.formGroup}>
+            <div className={styles.inputGroup}>
-                <label className={styles.label}>Tercih Edilen Şube</label>
+                <label>Şube</label>
-                <select name="branchId" value={formData.branchId} onChange={handleChange} className={styles.select}>
+                <select name="branchId" value={formData.branchId} onChange={handleChange} className={styles.input}>
-                    <option value="">Seçiniz (Opsiyonel)</option>
+                    <option value="">Seçiniz</option>
                     {branches.map(b => (
                         <option key={b.id} value={b.id}>{b.name}</option>
                     ))}
                 </select>
             </div>
 
-            <button type="submit" className={styles.button}>Kayıt Ol</button>
+            <button type="submit" className={styles.btn}>Kaydet</button>
         </form>
     );
 }

src/app/admin/register/StudentList.tsx

@@ -0,0 +1,134 @@
+'use client';
+import { useState } from 'react';
+import { useRouter } from 'next/navigation';
+import styles from '../branches/branches.module.css';
+
+export function StudentList({ students, branches }: { students: any[], branches: any[] }) {
+    const router = useRouter();
+    const [showSensitive, setShowSensitive] = useState(false);
+    const [editingId, setEditingId] = useState<string | null>(null);
+    const [editForm, setEditForm] = useState<any>(null);
+
+    const handleDelete = async (id: string) => {
+        if (!confirm('Kaydı silmek istediğinize emin misiniz?')) return;
+        const res = await fetch(`/api/students/${id}`, { method: 'DELETE' });
+        if (res.ok) {
+            router.refresh();
+        } else {
+            alert('Silme işlemi başarısız oldu.');
+        }
+    };
+
+    const startEdit = (student: any) => {
+        setEditingId(student.id);
+        setEditForm({
+            name: student.name,
+            email: student.email || '',
+            phone: student.phone,
+            branchId: student.branchId || '',
+            birthDate: student.birthDate ? new Date(student.birthDate).toISOString().split('T')[0] : ''
+        });
+    };
+
+    const handleUpdate = async (e: React.FormEvent) => {
+        e.preventDefault();
+        const res = await fetch(`/api/students/${editingId}`, {
+            method: 'PATCH',
+            body: JSON.stringify(editForm),
+            headers: { 'Content-Type': 'application/json' }
+        });
+
+        if (res.ok) {
+            setEditingId(null);
+            router.refresh();
+        } else {
+            alert('Güncelleme başarısız oldu.');
+        }
+    };
+
+    const maskInfo = (text: string) => {
+        if (!text) return 'Yok';
+        if (showSensitive) return text;
+        return text.replace(/.(?=.{4})/g, '*');
+    };
+
+    return (
+        <div className={styles.list}>
+            <div style={{ marginBottom: '1rem', display: 'flex', justifyContent: 'flex-end' }}>
+                <button
+                    onClick={() => setShowSensitive(!showSensitive)}
+                    className={styles.btn}
+                    style={{ background: showSensitive ? '#666' : '#0056b3' }}
+                >
+                    {showSensitive ? 'Bilgileri Gizle' : 'Bilgileri Göster'}
+                </button>
+            </div>
+            {students.map(s => (
+                <div key={s.id} className={styles.card}>
+                    {editingId === s.id ? (
+                        <form onSubmit={handleUpdate} style={{ width: '100%', display: 'flex', gap: '1rem', flexWrap: 'wrap', alignItems: 'flex-end' }}>
+                            <div className={styles.inputGroup}>
+                                <label>Ad Soyad</label>
+                                <input
+                                    value={editForm.name}
+                                    onChange={e => setEditForm({ ...editForm, name: e.target.value })}
+                                    className={styles.input}
+                                    required
+                                />
+                            </div>
+                            <div className={styles.inputGroup}>
+                                <label>Telefon</label>
+                                <input
+                                    value={editForm.phone}
+                                    onChange={e => setEditForm({ ...editForm, phone: e.target.value })}
+                                    className={styles.input}
+                                    required
+                                />
+                            </div>
+                            <div className={styles.inputGroup}>
+                                <label>Email</label>
+                                <input
+                                    value={editForm.email}
+                                    onChange={e => setEditForm({ ...editForm, email: e.target.value })}
+                                    className={styles.input}
+                                />
+                            </div>
+                            <div className={styles.inputGroup}>
+                                <label>Şube</label>
+                                <select
+                                    value={editForm.branchId}
+                                    onChange={e => setEditForm({ ...editForm, branchId: e.target.value })}
+                                    className={styles.input}
+                                >
+                                    <option value="">Seçiniz</option>
+                                    {branches.map(b => (
+                                        <option key={b.id} value={b.id}>{b.name}</option>
+                                    ))}
+                                </select>
+                            </div>
+                            <div style={{ display: 'flex', gap: '0.5rem' }}>
+                                <button type="submit" className={styles.btn} style={{ background: '#2e7d32' }}>Kaydet</button>
+                                <button type="button" onClick={() => setEditingId(null)} className={styles.btn}>İptal</button>
+                            </div>
+                        </form>
+                    ) : (
+                        <>
+                            <div>
+                                <h3>{s.name}</h3>
+                                <p>
+                                    <strong>Tel:</strong> {maskInfo(s.phone)} |
+                                    <strong> Email:</strong> {maskInfo(s.email)}
+                                </p>
+                                <small>{s.branch?.name || 'Şube seçilmemiş'}</small>
+                            </div>
+                            <div style={{ display: 'flex', gap: '0.5rem' }}>
+                                <button onClick={() => startEdit(s)} className={styles.btn} style={{ background: '#ffa000' }}>Düzenle</button>
+                                <button onClick={() => handleDelete(s.id)} className={`${styles.btn} ${styles.btnDelete}`}>Sil</button>
+                            </div>
+                        </>
+                    )}
+                </div>
+            ))}
+        </div>
+    );
+}

src/app/admin/register/page.tsx

@@ -1,18 +1,27 @@
 import { prisma } from '@/infrastructure/db/prisma';
 import { RegisterForm } from './RegisterForm';
-import styles from './register.module.css';
+import { StudentList } from './StudentList';
+import styles from '../branches/branches.module.css';
 
-export default async function RegisterPage() {
+export default async function Page() {
-    const branches = await prisma.branch.findMany({
+    const [branches, students] = await Promise.all([
-        select: { id: true, name: true }
+        prisma.branch.findMany({ select: { id: true, name: true } }),
-    });
+        prisma.student.findMany({
+            include: { branch: true },
+            orderBy: { createdAt: 'desc' }
+        })
+    ]);
 
     return (
         <div className={styles.container}>
             <div className={styles.header}>
-                <h1 className={styles.title}>Yeni Öğrenci Kaydı</h1>
+                <h1>Öğrenci Kayıt İşlemleri</h1>
             </div>
             <RegisterForm branches={branches} />
+            <div className={styles.header} style={{ marginTop: '2rem' }}>
+                <h2>Kayıtlı Öğrenciler</h2>
+            </div>
+            <StudentList students={students} branches={branches} />
         </div>
     );
 }

src/app/admin/register/register.module.css

@@ -1,90 +0,0 @@
-.container {
-    padding: 1rem;
-}
-
-.header {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    margin-bottom: 2rem;
-}
-
-.title {
-    font-size: 2rem;
-    font-weight: 600;
-    color: #333;
-}
-
-.card {
-    background: white;
-    padding: 2rem;
-    border-radius: 8px;
-    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
-    max-width: 800px;
-}
-
-.formGroup {
-    margin-bottom: 1.5rem;
-    display: flex;
-    flex-direction: column;
-    gap: 0.5rem;
-}
-
-.label {
-    font-weight: 500;
-    color: #555;
-    font-size: 0.95rem;
-}
-
-.input,
-.select {
-    padding: 0.75rem;
-    border: 1px solid #ddd;
-    border-radius: 6px;
-    font-size: 1rem;
-    color: #333;
-    background-color: #fff;
-    transition: border-color 0.2s;
-}
-
-.input:focus,
-.select:focus {
-    outline: none;
-    border-color: #333;
-}
-
-.button {
-    padding: 0.75rem 2rem;
-    background: #333;
-    color: white;
-    border: none;
-    border-radius: 6px;
-    font-size: 1rem;
-    font-weight: 500;
-    cursor: pointer;
-    transition: background-color 0.2s;
-    margin-top: 1rem;
-    align-self: flex-start;
-}
-
-.button:hover {
-    background: #000;
-}
-
-.success {
-    background-color: #e8f5e9;
-    color: #2e7d32;
-    padding: 1rem;
-    border-radius: 6px;
-    margin-bottom: 1.5rem;
-    border: 1px solid #c8e6c9;
-}
-
-.error {
-    background-color: #ffebee;
-    color: #c62828;
-    padding: 1rem;
-    border-radius: 6px;
-    margin-bottom: 1.5rem;
-    border: 1px solid #ffcdd2;
-}

src/app/api/branches/[id]/route.ts

@@ -3,11 +3,12 @@ import { prisma } from '@/infrastructure/db/prisma';
 
 export async function DELETE(
     request: Request,
-    { params }: { params: { id: string } }
+    { params }: { params: Promise<{ id: string }> }
 ) {
     try {
+        const { id } = await params;
         await prisma.branch.delete({
-            where: { id: params.id },
+            where: { id },
         });
         return NextResponse.json({ success: true });
     } catch (error) {
@@ -17,12 +18,13 @@ export async function DELETE(
 
 export async function PUT(
     request: Request,
-    { params }: { params: { id: string } }
+    { params }: { params: Promise<{ id: string }> }
 ) {
     try {
+        const { id } = await params;
         const json = await request.json();
         const branch = await prisma.branch.update({
-            where: { id: params.id },
+            where: { id },
             data: json,
         });
         return NextResponse.json(branch);

src/app/api/classes/[id]/route.ts

@@ -3,11 +3,12 @@ import { prisma } from '@/infrastructure/db/prisma';
 
 export async function DELETE(
     request: Request,
-    { params }: { params: { id: string } }
+    { params }: { params: Promise<{ id: string }> }
 ) {
     try {
+        const { id } = await params;
         await prisma.danceClass.delete({
-            where: { id: params.id },
+            where: { id },
         });
         return NextResponse.json({ success: true });
     } catch (error) {

src/app/api/instructors/[id]/route.ts

@@ -3,11 +3,12 @@ import { prisma } from '@/infrastructure/db/prisma';
 
 export async function DELETE(
     request: Request,
-    { params }: { params: { id: string } }
+    { params }: { params: Promise<{ id: string }> }
 ) {
     try {
+        const { id } = await params;
         await prisma.instructor.delete({
-            where: { id: params.id },
+            where: { id },
         });
         return NextResponse.json({ success: true });
     } catch (error) {

src/app/api/students/[id]/route.ts

@@ -0,0 +1,42 @@
+import { NextResponse } from 'next/server';
+import { prisma } from '@/infrastructure/db/prisma';
+
+export async function PATCH(
+    request: Request,
+    { params }: { params: Promise<{ id: string }> }
+) {
+    try {
+        const { id } = await params;
+        const json = await request.json();
+        const student = await prisma.student.update({
+            where: { id },
+            data: {
+                name: json.name,
+                email: json.email || null,
+                phone: json.phone,
+                birthDate: json.birthDate ? new Date(json.birthDate) : undefined,
+                branchId: json.branchId || null
+            },
+        });
+        return NextResponse.json({ success: true, student });
+    } catch (error: any) {
+        console.error('Update error:', error);
+        return NextResponse.json({ error: 'Failed to update student', details: error.message }, { status: 500 });
+    }
+}
+
+export async function DELETE(
+    request: Request,
+    { params }: { params: Promise<{ id: string }> }
+) {
+    try {
+        const { id } = await params;
+        await prisma.student.delete({
+            where: { id },
+        });
+        return NextResponse.json({ success: true });
+    } catch (error) {
+        console.error('Delete error:', error);
+        return NextResponse.json({ error: 'Failed to delete student' }, { status: 500 });
+    }
+}

src/infrastructure/db/prisma.ts

@@ -2,8 +2,13 @@ import { PrismaClient } from '@prisma/client';
 
 const globalForPrisma = global as unknown as { prisma: PrismaClient };
 
-export const prisma =
+const prismaInstance = globalForPrisma.prisma || new PrismaClient();
-    globalForPrisma.prisma ||
-    new PrismaClient();
 
-if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma;
+if (process.env.NODE_ENV !== 'production') {
+    globalForPrisma.prisma = prismaInstance;
+    // Log models to verify generation
+    const models = Object.keys(prismaInstance).filter(k => !k.startsWith('_') && !k.startsWith('$'));
+    console.log('Prisma models available:', models);
+}
+
+export const prisma = prismaInstance;