again n again

app/api/keloladata/data-mata-kuliah/route.ts

@@ -0,0 +1,393 @@
+import { NextRequest, NextResponse } from 'next/server';
+import supabase from '@/lib/db';
+
+// Define the MataKuliah type
+interface MataKuliah {
+  id_mk: number;
+  kode_mk: string;
+  nama_mk: string;
+  sks: number;
+  semester: number;
+  jenis_mk: 'Wajib' | 'Pilihan Wajib' | 'Pilihan';
+  id_prasyarat: number | null;
+  nama_prasyarat?: string | null;
+  created_at: string;
+  updated_at: string;
+}
+
+// GET - Ambil semua data mata kuliah atau satu mata kuliah spesifik berdasarkan ID
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+    const search = searchParams.get('search');
+    const semester = searchParams.get('semester');
+
+    if (id) {
+      // Ambil mata kuliah spesifik berdasarkan ID dengan join untuk prasyarat
+      const { data, error } = await supabase
+        .from('mata_kuliah')
+        .select(`
+          id_mk,
+          kode_mk,
+          nama_mk,
+          sks,
+          semester,
+          jenis_mk,
+          id_prasyarat,
+          created_at,
+          updated_at,
+          prasyarat:mata_kuliah!id_prasyarat(kode_mk, nama_mk)
+        `)
+        .eq('id_mk', id)
+        .single();
+
+      if (error || !data) {
+        return NextResponse.json({ message: 'Mata kuliah not found' }, { status: 404 });
+      }
+
+      // Transformasi data untuk meratakan field yang di-join
+      const transformedData = {
+        ...data,
+        nama_prasyarat: (data.prasyarat as any)?.nama_mk || null
+      };
+      delete (transformedData as any).prasyarat;
+
+      return NextResponse.json(transformedData);
+    } else {
+      // Ambil semua mata kuliah terlebih dahulu
+      let query = supabase
+        .from('mata_kuliah')
+        .select('*');
+
+      // Add search condition if provided
+      if (search) {
+        query = query.or(`kode_mk.ilike.%${search}%,nama_mk.ilike.%${search}%`);
+      }
+
+      // Add semester filter if provided
+      if (semester && semester !== 'all') {
+        query = query.eq('semester', parseInt(semester));
+      }
+
+      // Add order by
+      query = query.order('semester', { ascending: true }).order('kode_mk', { ascending: true });
+
+      const { data: mataKuliahData, error } = await query;
+
+      if (error) {
+        console.error('Error fetching data:', error);
+        return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+      }
+
+      // Ambil data prasyarat untuk semua mata kuliah yang memiliki prasyarat
+      const prasyaratIds = mataKuliahData
+        .filter(mk => mk.id_prasyarat)
+        .map(mk => mk.id_prasyarat);
+
+      let prasyaratData: any[] = [];
+      if (prasyaratIds.length > 0) {
+        const { data: prasyaratResult, error: prasyaratError } = await supabase
+          .from('mata_kuliah')
+          .select('id_mk, kode_mk, nama_mk')
+          .in('id_mk', prasyaratIds);
+
+        if (!prasyaratError) {
+          prasyaratData = prasyaratResult || [];
+        }
+      }
+
+      // Gabungkan data mata kuliah dengan data prasyarat
+      const transformedData = mataKuliahData.map(item => {
+        const prasyarat = prasyaratData.find(p => p.id_mk === item.id_prasyarat);
+        return {
+          ...item,
+          nama_prasyarat: prasyarat ? prasyarat.nama_mk : null
+        };
+      });
+
+      return NextResponse.json(transformedData);
+    }
+  } catch (error) {
+    console.error('Error fetching data:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// POST - Buat data mata kuliah baru
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+    const {
+      kode_mk,
+      nama_mk,
+      sks,
+      semester,
+      jenis_mk,
+      id_prasyarat
+    } = body;
+
+    // Validasi field yang wajib diisi
+    if (!kode_mk || !nama_mk || !sks || !semester || !jenis_mk) {
+      return NextResponse.json(
+        { message: 'Missing required fields: kode_mk, nama_mk, sks, semester, jenis_mk' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai sks dan semester
+    if (sks <= 0 || semester <= 0) {
+      return NextResponse.json(
+        { message: 'SKS and semester must be greater than 0' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi jenis mata kuliah
+    const validJenisMK = ['Wajib', 'Pilihan Wajib', 'Pilihan'];
+    if (!validJenisMK.includes(jenis_mk)) {
+      return NextResponse.json(
+        { message: 'Invalid jenis_mk value. Must be one of: Wajib, Pilihan Wajib, Pilihan' },
+        { status: 400 }
+      );
+    }
+
+    // Cek apakah kode mata kuliah sudah ada
+    const { data: existing, error: checkError } = await supabase
+      .from('mata_kuliah')
+      .select('kode_mk')
+      .eq('kode_mk', kode_mk)
+      .single();
+
+    if (existing) {
+      return NextResponse.json(
+        { message: 'Mata kuliah with this code already exists' },
+        { status: 409 }
+      );
+    }
+
+    // Validasi prasyarat jika ada
+    if (id_prasyarat) {
+      const { data: prasyaratExists, error: prasyaratError } = await supabase
+        .from('mata_kuliah')
+        .select('id_mk')
+        .eq('id_mk', id_prasyarat)
+        .single();
+
+      if (prasyaratError || !prasyaratExists) {
+        return NextResponse.json(
+          { message: 'Prasyarat mata kuliah not found' },
+          { status: 404 }
+        );
+      }
+    }
+
+    // Insert mata kuliah baru
+    const { data, error } = await supabase
+      .from('mata_kuliah')
+      .insert({
+        kode_mk,
+        nama_mk,
+        sks: parseInt(sks),
+        semester: parseInt(semester),
+        jenis_mk,
+        id_prasyarat: id_prasyarat || null
+      })
+      .select()
+      .single();
+
+    if (error) {
+      console.error('Error creating mata kuliah:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json(
+      { message: 'Mata kuliah created successfully', id: data.id_mk },
+      { status: 201 }
+    );
+  } catch (error) {
+    console.error('Error creating mata kuliah:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// PUT - Update data mata kuliah yang sudah ada
+export async function PUT(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+
+    if (!id) {
+      return NextResponse.json({ message: 'ID is required' }, { status: 400 });
+    }
+
+    const body = await request.json();
+    const {
+      kode_mk,
+      nama_mk,
+      sks,
+      semester,
+      jenis_mk,
+      id_prasyarat
+    } = body;
+
+    // Validasi field yang wajib diisi
+    if (!kode_mk || !nama_mk || !sks || !semester || !jenis_mk) {
+      return NextResponse.json(
+        { message: 'Missing required fields: kode_mk, nama_mk, sks, semester, jenis_mk' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai sks dan semester
+    if (sks <= 0 || semester <= 0) {
+      return NextResponse.json(
+        { message: 'SKS and semester must be greater than 0' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi jenis mata kuliah
+    const validJenisMK = ['Wajib', 'Pilihan Wajib', 'Pilihan'];
+    if (!validJenisMK.includes(jenis_mk)) {
+      return NextResponse.json(
+        { message: 'Invalid jenis_mk value. Must be one of: Wajib, Pilihan Wajib, Pilihan' },
+        { status: 400 }
+      );
+    }
+
+    // Cek apakah mata kuliah ada
+    const { data: existing, error: checkError } = await supabase
+      .from('mata_kuliah')
+      .select('*')
+      .eq('id_mk', id)
+      .single();
+
+    if (checkError || !existing) {
+      return NextResponse.json({ message: 'Mata kuliah not found' }, { status: 404 });
+    }
+
+    // Cek apakah kode mata kuliah sudah digunakan oleh mata kuliah lain
+    const { data: duplicateCode, error: duplicateError } = await supabase
+      .from('mata_kuliah')
+      .select('id_mk')
+      .eq('kode_mk', kode_mk)
+      .neq('id_mk', id)
+      .single();
+
+    if (duplicateCode) {
+      return NextResponse.json(
+        { message: 'Mata kuliah with this code already exists' },
+        { status: 409 }
+      );
+    }
+
+    // Validasi prasyarat jika ada
+    if (id_prasyarat) {
+      // Pastikan prasyarat tidak sama dengan mata kuliah itu sendiri
+      if (parseInt(id_prasyarat) === parseInt(id)) {
+        return NextResponse.json(
+          { message: 'Mata kuliah cannot be prerequisite of itself' },
+          { status: 400 }
+        );
+      }
+
+      const { data: prasyaratExists, error: prasyaratError } = await supabase
+        .from('mata_kuliah')
+        .select('id_mk')
+        .eq('id_mk', id_prasyarat)
+        .single();
+
+      if (prasyaratError || !prasyaratExists) {
+        return NextResponse.json(
+          { message: 'Prasyarat mata kuliah not found' },
+          { status: 404 }
+        );
+      }
+    }
+
+    // Update mata kuliah
+    const { error } = await supabase
+      .from('mata_kuliah')
+      .update({
+        kode_mk,
+        nama_mk,
+        sks: parseInt(sks),
+        semester: parseInt(semester),
+        jenis_mk,
+        id_prasyarat: id_prasyarat || null,
+        updated_at: new Date().toISOString()
+      })
+      .eq('id_mk', id);
+
+    if (error) {
+      console.error('Error updating mata kuliah:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json({ message: 'Mata kuliah updated successfully' });
+  } catch (error) {
+    console.error('Error updating mata kuliah:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// DELETE - Hapus data mata kuliah
+export async function DELETE(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+
+    if (!id) {
+      return NextResponse.json({ message: 'ID is required' }, { status: 400 });
+    }
+
+    // Check if mata kuliah exists
+    const { data: existing, error: checkError } = await supabase
+      .from('mata_kuliah')
+      .select('id_mk, kode_mk, nama_mk')
+      .eq('id_mk', id)
+      .single();
+
+    if (checkError || !existing) {
+      return NextResponse.json({ message: 'Mata kuliah not found' }, { status: 404 });
+    }
+
+    // Check if mata kuliah is used as prerequisite by other mata kuliah
+    const { data: dependents, error: dependentsError } = await supabase
+      .from('mata_kuliah')
+      .select('kode_mk, nama_mk')
+      .eq('id_prasyarat', id);
+
+    if (dependentsError) {
+      console.error('Error checking dependents:', dependentsError);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    if (dependents && dependents.length > 0) {
+      const dependentNames = dependents.map(d => `${d.kode_mk} - ${d.nama_mk}`).join(', ');
+      return NextResponse.json(
+        { 
+          message: `Cannot delete mata kuliah. It is used as prerequisite by: ${dependentNames}` 
+        },
+        { status: 400 }
+      );
+    }
+
+    // Hapus mata kuliah
+    const { error } = await supabase
+      .from('mata_kuliah')
+      .delete()
+      .eq('id_mk', id);
+
+    if (error) {
+      console.error('Error deleting mata kuliah:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json({ message: 'Mata kuliah deleted successfully' });
+  } catch (error) {
+    console.error('Error deleting mata kuliah:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}

app/api/keloladata/data-nilai-mahasiswa/route.ts

@@ -0,0 +1,420 @@
+import { NextRequest, NextResponse } from 'next/server';
+import supabase from '@/lib/db';
+
+// Define the NilaiMahasiswa type
+interface NilaiMahasiswa {
+  id_nilai: number;
+  id_mahasiswa: number;
+  id_mk: number;
+  nim: string;
+  nama: string;
+  kode_mk: string;
+  nama_mk: string;
+  nilai_huruf: 'A' | 'B+' | 'B' | 'C+' | 'C' | 'D+' | 'D' | 'E';
+  nilai_angka: number;
+  semester: number;
+  created_at: string;
+  updated_at: string;
+}
+
+// GET - Ambil semua data nilai mahasiswa atau satu nilai spesifik berdasarkan ID
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+    const search = searchParams.get('search');
+    const semester = searchParams.get('semester');
+    const nilai_huruf = searchParams.get('nilai_huruf');
+
+    if (id) {
+      // Ambil nilai spesifik berdasarkan ID dengan join ke mahasiswa dan mata_kuliah
+      const { data, error } = await supabase
+        .from('nilai_mahasiswa')
+        .select(`
+          id_nilai,
+          id_mahasiswa,
+          id_mk,
+          nilai_huruf,
+          nilai_angka,
+          semester,
+          created_at,
+          updated_at,
+          mahasiswa!inner(nim, nama),
+          mata_kuliah!inner(kode_mk, nama_mk)
+        `)
+        .eq('id_nilai', id)
+        .single();
+
+      if (error || !data) {
+        return NextResponse.json({ message: 'Nilai mahasiswa not found' }, { status: 404 });
+      }
+
+      // Transformasi data untuk meratakan field yang di-join
+      const transformedData: any = {
+        ...data,
+        nim: (data.mahasiswa as any)?.nim || '',
+        nama: (data.mahasiswa as any)?.nama || '',
+        kode_mk: (data.mata_kuliah as any)?.kode_mk || '',
+        nama_mk: (data.mata_kuliah as any)?.nama_mk || ''
+      };
+      delete transformedData.mahasiswa;
+      delete transformedData.mata_kuliah;
+
+      return NextResponse.json(transformedData);
+    } else {
+      // Ambil semua nilai mahasiswa dengan join
+      let query = supabase
+        .from('nilai_mahasiswa')
+        .select(`
+          id_nilai,
+          id_mahasiswa,
+          id_mk,
+          nilai_huruf,
+          nilai_angka,
+          semester,
+          created_at,
+          updated_at,
+          mahasiswa!inner(nim, nama),
+          mata_kuliah!inner(kode_mk, nama_mk)
+        `);
+
+      // Add search condition if provided
+      if (search) {
+        query = query.or(`mahasiswa.nim.ilike.%${search}%,mahasiswa.nama.ilike.%${search}%,mata_kuliah.kode_mk.ilike.%${search}%,mata_kuliah.nama_mk.ilike.%${search}%`);
+      }
+
+      // Add semester filter if provided
+      if (semester && semester !== 'all') {
+        query = query.eq('semester', parseInt(semester));
+      }
+
+      // Add nilai_huruf filter if provided
+      if (nilai_huruf && nilai_huruf !== 'all') {
+        query = query.eq('nilai_huruf', nilai_huruf);
+      }
+
+      // Add order by
+      query = query.order('semester', { ascending: true }).order('mahasiswa(nim)', { ascending: true });
+
+      const { data, error } = await query;
+
+      if (error) {
+        console.error('Error fetching data:', error);
+        return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+      }
+
+      // Transformasi data untuk meratakan field yang di-join
+      const transformedData = data.map((item: any) => ({
+        ...item,
+        nim: item.mahasiswa?.nim || '',
+        nama: item.mahasiswa?.nama || '',
+        kode_mk: item.mata_kuliah?.kode_mk || '',
+        nama_mk: item.mata_kuliah?.nama_mk || ''
+      })).map((item: any) => {
+        const { mahasiswa, mata_kuliah, ...rest } = item;
+        return rest;
+      });
+
+      return NextResponse.json(transformedData);
+    }
+  } catch (error) {
+    console.error('Error fetching data:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// POST - Buat data nilai mahasiswa baru
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+    const {
+      nim,
+      id_mk,
+      nilai_huruf,
+      nilai_angka,
+      semester
+    } = body;
+
+    // Validasi field yang wajib diisi
+    if (!nim || !id_mk || !nilai_huruf || nilai_angka === undefined || !semester) {
+      return NextResponse.json(
+        { message: 'Missing required fields: nim, id_mk, nilai_huruf, nilai_angka, semester' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai huruf
+    const validNilaiHuruf = ['A', 'B+', 'B', 'C+', 'C', 'D+', 'D', 'E'];
+    if (!validNilaiHuruf.includes(nilai_huruf)) {
+      return NextResponse.json(
+        { message: 'Invalid nilai_huruf. Must be one of: A, B+, B, C+, C, D+, D, E' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai angka
+    if (nilai_angka < 0 || nilai_angka > 4) {
+      return NextResponse.json(
+        { message: 'nilai_angka must be between 0 and 4' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi semester
+    if (semester <= 0) {
+      return NextResponse.json(
+        { message: 'semester must be greater than 0' },
+        { status: 400 }
+      );
+    }
+
+    // Cek apakah mahasiswa dengan NIM tersebut ada
+    const { data: mahasiswa, error: mahasiswaError } = await supabase
+      .from('mahasiswa')
+      .select('id_mahasiswa, nim, nama')
+      .eq('nim', nim)
+      .single();
+
+    if (mahasiswaError || !mahasiswa) {
+      return NextResponse.json(
+        { message: `Mahasiswa dengan NIM ${nim} tidak terdaftar` },
+        { status: 404 }
+      );
+    }
+
+    // Cek apakah mata kuliah ada
+    const { data: mataKuliah, error: mkError } = await supabase
+      .from('mata_kuliah')
+      .select('id_mk, kode_mk, nama_mk')
+      .eq('id_mk', id_mk)
+      .single();
+
+    if (mkError || !mataKuliah) {
+      return NextResponse.json(
+        { message: 'Mata kuliah not found' },
+        { status: 404 }
+      );
+    }
+
+    // Cek apakah nilai untuk mahasiswa dan mata kuliah ini sudah ada
+    const { data: existingNilai, error: checkError } = await supabase
+      .from('nilai_mahasiswa')
+      .select('id_nilai')
+      .eq('id_mahasiswa', mahasiswa.id_mahasiswa)
+      .eq('id_mk', id_mk)
+      .single();
+
+    if (existingNilai) {
+      return NextResponse.json(
+        { message: `Nilai untuk mahasiswa ${nim} pada mata kuliah ${mataKuliah.kode_mk} sudah ada` },
+        { status: 409 }
+      );
+    }
+
+    // Insert nilai baru
+    const { data, error } = await supabase
+      .from('nilai_mahasiswa')
+      .insert({
+        id_mahasiswa: mahasiswa.id_mahasiswa,
+        id_mk: parseInt(id_mk),
+        nilai_huruf,
+        nilai_angka: parseFloat(nilai_angka),
+        semester: parseInt(semester)
+      })
+      .select()
+      .single();
+
+    if (error) {
+      console.error('Error creating nilai mahasiswa:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json(
+      { 
+        message: 'Nilai mahasiswa berhasil ditambahkan',
+        id: data.id_nilai,
+        mahasiswa: mahasiswa.nama,
+        mata_kuliah: mataKuliah.nama_mk
+      },
+      { status: 201 }
+    );
+  } catch (error) {
+    console.error('Error creating nilai mahasiswa:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// PUT - Update data nilai mahasiswa yang sudah ada
+export async function PUT(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+
+    if (!id) {
+      return NextResponse.json({ message: 'ID is required' }, { status: 400 });
+    }
+
+    const body = await request.json();
+    const {
+      nim,
+      id_mk,
+      nilai_huruf,
+      nilai_angka,
+      semester
+    } = body;
+
+    // Validasi field yang wajib diisi
+    if (!nim || !id_mk || !nilai_huruf || nilai_angka === undefined || !semester) {
+      return NextResponse.json(
+        { message: 'Missing required fields: nim, id_mk, nilai_huruf, nilai_angka, semester' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai huruf
+    const validNilaiHuruf = ['A', 'B+', 'B', 'C+', 'C', 'D+', 'D', 'E'];
+    if (!validNilaiHuruf.includes(nilai_huruf)) {
+      return NextResponse.json(
+        { message: 'Invalid nilai_huruf. Must be one of: A, B+, B, C+, C, D+, D, E' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi nilai angka
+    if (nilai_angka < 0 || nilai_angka > 4) {
+      return NextResponse.json(
+        { message: 'nilai_angka must be between 0 and 4' },
+        { status: 400 }
+      );
+    }
+
+    // Validasi semester
+    if (semester <= 0) {
+      return NextResponse.json(
+        { message: 'semester must be greater than 0' },
+        { status: 400 }
+      );
+    }
+
+    // Cek apakah nilai ada
+    const { data: existing, error: checkError } = await supabase
+      .from('nilai_mahasiswa')
+      .select('*')
+      .eq('id_nilai', id)
+      .single();
+
+    if (checkError || !existing) {
+      return NextResponse.json({ message: 'Nilai mahasiswa not found' }, { status: 404 });
+    }
+
+    // Cek apakah mahasiswa dengan NIM tersebut ada
+    const { data: mahasiswa, error: mahasiswaError } = await supabase
+      .from('mahasiswa')
+      .select('id_mahasiswa, nim, nama')
+      .eq('nim', nim)
+      .single();
+
+    if (mahasiswaError || !mahasiswa) {
+      return NextResponse.json(
+        { message: `Mahasiswa dengan NIM ${nim} tidak terdaftar` },
+        { status: 404 }
+      );
+    }
+
+    // Cek apakah mata kuliah ada
+    const { data: mataKuliah, error: mkError } = await supabase
+      .from('mata_kuliah')
+      .select('id_mk, kode_mk, nama_mk')
+      .eq('id_mk', id_mk)
+      .single();
+
+    if (mkError || !mataKuliah) {
+      return NextResponse.json(
+        { message: 'Mata kuliah not found' },
+        { status: 404 }
+      );
+    }
+
+    // Cek apakah kombinasi mahasiswa-mata kuliah sudah digunakan oleh nilai lain
+    const { data: duplicateNilai, error: duplicateError } = await supabase
+      .from('nilai_mahasiswa')
+      .select('id_nilai')
+      .eq('id_mahasiswa', mahasiswa.id_mahasiswa)
+      .eq('id_mk', id_mk)
+      .neq('id_nilai', id)
+      .single();
+
+    if (duplicateNilai) {
+      return NextResponse.json(
+        { message: `Nilai untuk mahasiswa ${nim} pada mata kuliah ${mataKuliah.kode_mk} sudah ada` },
+        { status: 409 }
+      );
+    }
+
+    // Update nilai
+    const { error } = await supabase
+      .from('nilai_mahasiswa')
+      .update({
+        id_mahasiswa: mahasiswa.id_mahasiswa,
+        id_mk: parseInt(id_mk),
+        nilai_huruf,
+        nilai_angka: parseFloat(nilai_angka),
+        semester: parseInt(semester),
+        updated_at: new Date().toISOString()
+      })
+      .eq('id_nilai', id);
+
+    if (error) {
+      console.error('Error updating nilai mahasiswa:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json({ message: 'Nilai mahasiswa berhasil diperbarui' });
+  } catch (error) {
+    console.error('Error updating nilai mahasiswa:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}
+
+// DELETE - Hapus data nilai mahasiswa
+export async function DELETE(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const id = searchParams.get('id');
+
+    if (!id) {
+      return NextResponse.json({ message: 'ID is required' }, { status: 400 });
+    }
+
+    // Check if nilai exists
+    const { data: existing, error: checkError } = await supabase
+      .from('nilai_mahasiswa')
+      .select(`
+        id_nilai,
+        mahasiswa!inner(nim, nama),
+        mata_kuliah!inner(kode_mk, nama_mk)
+      `)
+      .eq('id_nilai', id)
+      .single();
+
+    if (checkError || !existing) {
+      return NextResponse.json({ message: 'Nilai mahasiswa not found' }, { status: 404 });
+    }
+
+    // Hapus nilai
+    const { error } = await supabase
+      .from('nilai_mahasiswa')
+      .delete()
+      .eq('id_nilai', id);
+
+    if (error) {
+      console.error('Error deleting nilai mahasiswa:', error);
+      return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+    }
+
+    return NextResponse.json({ message: 'Nilai mahasiswa berhasil dihapus' });
+  } catch (error) {
+    console.error('Error deleting nilai mahasiswa:', error);
+    return NextResponse.json({ message: 'Internal Server Error' }, { status: 500 });
+  }
+}

app/api/keloladata/data-nilai-mahasiswa/upload/route.ts

@@ -0,0 +1,311 @@
+import { NextRequest, NextResponse } from 'next/server';
+import supabase from '@/lib/db';
+import * as XLSX from 'xlsx';
+
+interface NilaiMahasiswaUpload {
+  nim: string;
+  kode_mk: string;
+  semester: number;
+  nilai_huruf: 'A' | 'B+' | 'B' | 'C+' | 'C' | 'D+' | 'D' | 'E';
+  nilai_angka: number;
+}
+
+
+export async function POST(request: NextRequest) {
+  try {
+    const formData = await request.formData();
+    const file = formData.get('file') as File;
+
+    if (!file) {
+      return NextResponse.json(
+        { message: 'No file uploaded' },
+        { status: 400 }
+      );
+    }
+
+    // Validate file type
+    const validTypes = [
+      'application/vnd.ms-excel',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      'text/csv'
+    ];
+
+    if (!validTypes.includes(file.type)) {
+      return NextResponse.json(
+        { message: 'Invalid file type. Please upload Excel (.xlsx, .xls) or CSV (.csv) file' },
+        { status: 400 }
+      );
+    }
+
+    // Validate file size (10MB max)
+    const maxSize = 10 * 1024 * 1024; // 10MB
+    if (file.size > maxSize) {
+      return NextResponse.json(
+        { message: 'File size too large. Maximum size is 10MB' },
+        { status: 400 }
+      );
+    }
+
+    // Read file content
+    const buffer = await file.arrayBuffer();
+    let data: any[] = [];
+
+    if (file.type === 'text/csv') {
+      // Handle CSV file
+      const text = new TextDecoder().decode(buffer);
+      const lines = text.split('\n').filter(line => line.trim());
+      
+      if (lines.length < 2) {
+        return NextResponse.json(
+          { message: 'File must contain at least header and one data row' },
+          { status: 400 }
+        );
+      }
+
+      const headers = lines[0].split(',').map(h => h.trim().replace(/"/g, ''));
+      
+      for (let i = 1; i < lines.length; i++) {
+        const values = lines[i].split(',').map(v => v.trim().replace(/"/g, ''));
+        const row: any = {};
+        headers.forEach((header, index) => {
+          row[header] = values[index] || '';
+        });
+        data.push(row);
+      }
+    } else {
+      // Handle Excel file
+      const workbook = XLSX.read(buffer, { type: 'buffer' });
+      const sheetName = workbook.SheetNames[0];
+      const worksheet = workbook.Sheets[sheetName];
+      data = XLSX.utils.sheet_to_json(worksheet);
+    }
+
+    if (data.length === 0) {
+      return NextResponse.json(
+        { message: 'No data found in file' },
+        { status: 400 }
+      );
+    }
+
+    // Normalize column names and validate required columns
+    const normalizedData = data.map(row => {
+      const normalizedRow: any = {};
+      Object.keys(row).forEach(key => {
+        const normalizedKey = key.toLowerCase()
+          .replace(/\s+/g, '_')
+          .replace(/[^a-z0-9_]/g, '');
+        normalizedRow[normalizedKey] = row[key];
+      });
+      return normalizedRow;
+    });
+
+    // Map common column variations to standard names
+    const columnMappings = {
+      'nim': ['nim', 'NIM', 'Nim'],
+      'kode_mk': ['kode_mk', 'Kode MK', 'kode mk', 'kodemk', 'kodeMK'],
+      'semester': ['semester', 'Semester', 'sem'],
+      'nilai_huruf': ['nilai_huruf', 'Nilai Huruf', 'nilai huruf', 'nilaihuruf', 'nilaiHuruf', 'grade'],
+      'nilai_angka': ['nilai_angka', 'Nilai Angka', 'nilai angka', 'nilaiangka', 'nilaiAngka', 'score']
+    };
+
+    // Further normalize data with column mappings
+    const finalData = normalizedData.map(row => {
+      const finalRow: any = {};
+      
+      Object.keys(columnMappings).forEach(standardKey => {
+        const variations = columnMappings[standardKey as keyof typeof columnMappings];
+        let value = null;
+        
+        // Try to find the value using different variations
+        for (const variation of variations) {
+          const normalizedVariation = variation.toLowerCase()
+            .replace(/\s+/g, '_')
+            .replace(/[^a-z0-9_]/g, '');
+          
+          if (row[normalizedVariation] !== undefined && row[normalizedVariation] !== null && row[normalizedVariation] !== '') {
+            value = row[normalizedVariation];
+            break;
+          }
+        }
+        
+        finalRow[standardKey] = value;
+      });
+      
+      return finalRow;
+    });
+
+    // Validate required columns
+    const requiredColumns = ['nim', 'kode_mk', 'semester', 'nilai_huruf', 'nilai_angka'];
+    const firstRow = finalData[0];
+    const missingColumns = requiredColumns.filter(col => 
+      firstRow[col] === undefined || firstRow[col] === null || firstRow[col] === ''
+    );
+
+    if (missingColumns.length > 0) {
+      return NextResponse.json(
+        { message: `Missing required columns: ${missingColumns.join(', ')}. Please check your Excel headers.` },
+        { status: 400 }
+      );
+    }
+
+    // Use the normalized data for processing
+    data = finalData;
+
+    // Process and validate data
+    const processedData: NilaiMahasiswaUpload[] = [];
+    const errors: string[] = [];
+
+    for (let i = 0; i < data.length; i++) {
+      const row = data[i];
+      const rowNum = i + 2; // +2 because Excel rows start from 1 and we skip header
+
+      try {
+        // Validate and convert data types
+        const semester = parseInt(row.semester);
+        
+        // Handle decimal comma (Indonesian format) and convert to dot
+        const nilaiAngkaStr = row.nilai_angka.toString().replace(',', '.');
+        const nilai_angka = parseFloat(nilaiAngkaStr);
+
+        if (isNaN(semester) || semester <= 0 || semester > 8) {
+          errors.push(`Row ${rowNum}: Semester must be a number between 1-8`);
+          continue;
+        }
+
+        if (isNaN(nilai_angka) || nilai_angka < 0 || nilai_angka > 4) {
+          errors.push(`Row ${rowNum}: Nilai angka must be a number between 0-4 (current: ${row.nilai_angka})`);
+          continue;
+        }
+
+        // Validate nilai_huruf
+        const validNilaiHuruf = ['A', 'B+', 'B', 'C+', 'C', 'D+', 'D', 'E'];
+        if (!validNilaiHuruf.includes(row.nilai_huruf)) {
+          errors.push(`Row ${rowNum}: nilai_huruf must be one of: ${validNilaiHuruf.join(', ')}`);
+          continue;
+        }
+
+        // Validate required fields
+        if (!row.nim || !row.kode_mk) {
+          errors.push(`Row ${rowNum}: nim and kode_mk are required`);
+          continue;
+        }
+
+        // Keep kode_mk as is - don't normalize it
+        let kodeMK = row.kode_mk.toString().trim();
+
+        processedData.push({
+          nim: row.nim.toString().trim(),
+          kode_mk: kodeMK,
+          semester,
+          nilai_huruf: row.nilai_huruf as 'A' | 'B+' | 'B' | 'C+' | 'C' | 'D+' | 'D' | 'E',
+          nilai_angka
+        });
+      } catch (error) {
+        errors.push(`Row ${rowNum}: Invalid data format`);
+      }
+    }
+
+    if (errors.length > 0) {
+      return NextResponse.json(
+        { 
+          message: 'Validation errors found',
+          errors: errors.slice(0, 10) // Limit to first 10 errors
+        },
+        { status: 400 }
+      );
+    }
+
+    // Get existing mahasiswa and mata kuliah for validation
+    const { data: existingMahasiswa, error: fetchMahasiswaError } = await supabase
+      .from('mahasiswa')
+      .select('id_mahasiswa, nim');
+
+    if (fetchMahasiswaError) {
+      return NextResponse.json(
+        { message: 'Failed to validate mahasiswa data' },
+        { status: 500 }
+      );
+    }
+
+    const { data: existingMataKuliah, error: fetchMKError } = await supabase
+      .from('mata_kuliah')
+      .select('id_mk, kode_mk');
+
+    if (fetchMKError) {
+      return NextResponse.json(
+        { message: 'Failed to validate mata kuliah data' },
+        { status: 500 }
+      );
+    }
+
+    const nimToIdMap = new Map(existingMahasiswa?.map(m => [m.nim, m.id_mahasiswa]) || []);
+    const kodeMKToIdMap = new Map(existingMataKuliah?.map(mk => [mk.kode_mk, mk.id_mk]) || []);
+
+    // Process data for insertion
+    const insertData: any[] = [];
+    const validationErrors: string[] = [];
+
+    for (const nilai of processedData) {
+      // Check if mahasiswa exists
+      const id_mahasiswa = nimToIdMap.get(nilai.nim);
+      if (!id_mahasiswa) {
+        validationErrors.push(`NIM ${nilai.nim} not found in database`);
+        continue;
+      }
+
+      // Check if mata kuliah exists
+      const id_mk = kodeMKToIdMap.get(nilai.kode_mk);
+      if (!id_mk) {
+        validationErrors.push(`Kode MK ${nilai.kode_mk} not found in database`);
+        continue;
+      }
+
+      insertData.push({
+        id_mahasiswa,
+        id_mk,
+        nilai_huruf: nilai.nilai_huruf,
+        nilai_angka: nilai.nilai_angka,
+        semester: nilai.semester
+      });
+    }
+
+    if (validationErrors.length > 0) {
+      return NextResponse.json(
+        { 
+          message: 'Data validation errors',
+          errors: validationErrors.slice(0, 10)
+        },
+        { status: 400 }
+      );
+    }
+
+    // Insert data to database
+    let successCount = 0;
+    if (insertData.length > 0) {
+      const { error: insertError } = await supabase
+        .from('nilai_mahasiswa')
+        .insert(insertData);
+
+      if (insertError) {
+        return NextResponse.json(
+          { message: 'Failed to insert data to database' },
+          { status: 500 }
+        );
+      }
+
+      successCount = insertData.length;
+    }
+
+    return NextResponse.json({
+      message: 'Upload completed',
+      successCount,
+      totalRows: processedData.length
+    });
+
+  } catch (error) {
+    return NextResponse.json(
+      { message: 'Internal server error' },
+      { status: 500 }
+    );
+  }
+}

app/api/keloladata/upload-mata-kuliah/route.ts

@@ -0,0 +1,257 @@
+import { NextRequest, NextResponse } from 'next/server';
+import supabase from '@/lib/db';
+import * as XLSX from 'xlsx';
+
+interface MataKuliahUpload {
+  kode_mk: string;
+  nama_mk: string;
+  sks: number;
+  semester: number;
+  jenis_mk: 'Wajib' | 'Pilihan Wajib' | 'Pilihan';
+  kode_prasyarat?: string;
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const formData = await request.formData();
+    const file = formData.get('file') as File;
+
+    if (!file) {
+      return NextResponse.json(
+        { message: 'No file uploaded' },
+        { status: 400 }
+      );
+    }
+
+    // Validate file type
+    const validTypes = [
+      'application/vnd.ms-excel',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      'text/csv'
+    ];
+
+    if (!validTypes.includes(file.type)) {
+      return NextResponse.json(
+        { message: 'Invalid file type. Please upload Excel (.xlsx, .xls) or CSV (.csv) file' },
+        { status: 400 }
+      );
+    }
+
+    // Validate file size (10MB max)
+    const maxSize = 10 * 1024 * 1024; // 10MB
+    if (file.size > maxSize) {
+      return NextResponse.json(
+        { message: 'File size too large. Maximum size is 10MB' },
+        { status: 400 }
+      );
+    }
+
+    // Read file content
+    const buffer = await file.arrayBuffer();
+    let data: any[] = [];
+
+    if (file.type === 'text/csv') {
+      // Handle CSV file
+      const text = new TextDecoder().decode(buffer);
+      const lines = text.split('\n').filter(line => line.trim());
+      
+      if (lines.length < 2) {
+        return NextResponse.json(
+          { message: 'File must contain at least header and one data row' },
+          { status: 400 }
+        );
+      }
+
+      const headers = lines[0].split(',').map(h => h.trim().replace(/"/g, ''));
+      
+      for (let i = 1; i < lines.length; i++) {
+        const values = lines[i].split(',').map(v => v.trim().replace(/"/g, ''));
+        const row: any = {};
+        headers.forEach((header, index) => {
+          row[header] = values[index] || '';
+        });
+        data.push(row);
+      }
+    } else {
+      // Handle Excel file
+      const workbook = XLSX.read(buffer, { type: 'buffer' });
+      const sheetName = workbook.SheetNames[0];
+      const worksheet = workbook.Sheets[sheetName];
+      data = XLSX.utils.sheet_to_json(worksheet);
+    }
+
+    if (data.length === 0) {
+      return NextResponse.json(
+        { message: 'No data found in file' },
+        { status: 400 }
+      );
+    }
+
+    // Validate required columns
+    const requiredColumns = ['kode_mk', 'nama_mk', 'sks', 'semester', 'jenis_mk'];
+    const firstRow = data[0];
+    const missingColumns = requiredColumns.filter(col => !(col in firstRow));
+
+    if (missingColumns.length > 0) {
+      return NextResponse.json(
+        { message: `Missing required columns: ${missingColumns.join(', ')}` },
+        { status: 400 }
+      );
+    }
+
+    // Process and validate data
+    const processedData: MataKuliahUpload[] = [];
+    const errors: string[] = [];
+
+    for (let i = 0; i < data.length; i++) {
+      const row = data[i];
+      const rowNum = i + 2; // +2 because Excel rows start from 1 and we skip header
+
+      try {
+        // Validate and convert data types
+        const sks = parseInt(row.sks);
+        const semester = parseInt(row.semester);
+
+        if (isNaN(sks) || sks <= 0 || sks > 6) {
+          errors.push(`Row ${rowNum}: SKS must be a number between 1-6`);
+          continue;
+        }
+
+        if (isNaN(semester) || semester <= 0 || semester > 8) {
+          errors.push(`Row ${rowNum}: Semester must be a number between 1-8`);
+          continue;
+        }
+
+        // Validate jenis_mk
+        const validJenisMK = ['Wajib', 'Pilihan Wajib', 'Pilihan'];
+        if (!validJenisMK.includes(row.jenis_mk)) {
+          errors.push(`Row ${rowNum}: jenis_mk must be one of: ${validJenisMK.join(', ')}`);
+          continue;
+        }
+
+        // Validate required fields
+        if (!row.kode_mk || !row.nama_mk) {
+          errors.push(`Row ${rowNum}: kode_mk and nama_mk are required`);
+          continue;
+        }
+
+        processedData.push({
+          kode_mk: row.kode_mk.toString().trim(),
+          nama_mk: row.nama_mk.toString().trim(),
+          sks,
+          semester,
+          jenis_mk: row.jenis_mk as 'Wajib' | 'Pilihan Wajib' | 'Pilihan',
+          kode_prasyarat: row.kode_prasyarat ? row.kode_prasyarat.toString().trim() : undefined
+        });
+      } catch (error) {
+        errors.push(`Row ${rowNum}: Invalid data format`);
+      }
+    }
+
+    if (errors.length > 0) {
+      return NextResponse.json(
+        { 
+          message: 'Validation errors found',
+          errors: errors.slice(0, 10) // Limit to first 10 errors
+        },
+        { status: 400 }
+      );
+    }
+
+    // Get existing mata kuliah for duplicate check and prasyarat validation
+    const { data: existingMK, error: fetchError } = await supabase
+      .from('mata_kuliah')
+      .select('kode_mk, id_mk');
+
+    if (fetchError) {
+      console.error('Error fetching existing mata kuliah:', fetchError);
+      return NextResponse.json(
+        { message: 'Failed to validate data' },
+        { status: 500 }
+      );
+    }
+
+    const existingCodes = new Set(existingMK?.map(mk => mk.kode_mk) || []);
+    const codeToIdMap = new Map(existingMK?.map(mk => [mk.kode_mk, mk.id_mk]) || []);
+
+    // Process data for insertion
+    const insertData: any[] = [];
+    const duplicates: string[] = [];
+
+    for (const mk of processedData) {
+      // Check for duplicates
+      if (existingCodes.has(mk.kode_mk)) {
+        duplicates.push(mk.kode_mk);
+        continue;
+      }
+
+      // Resolve prasyarat ID
+      let id_prasyarat = null;
+      if (mk.kode_prasyarat) {
+        id_prasyarat = codeToIdMap.get(mk.kode_prasyarat);
+        if (!id_prasyarat) {
+          errors.push(`Prasyarat ${mk.kode_prasyarat} not found for ${mk.kode_mk}`);
+          continue;
+        }
+      }
+
+      insertData.push({
+        kode_mk: mk.kode_mk,
+        nama_mk: mk.nama_mk,
+        sks: mk.sks,
+        semester: mk.semester,
+        jenis_mk: mk.jenis_mk,
+        id_prasyarat
+      });
+    }
+
+    if (errors.length > 0) {
+      return NextResponse.json(
+        { 
+          message: 'Prasyarat validation errors',
+          errors: errors.slice(0, 10)
+        },
+        { status: 400 }
+      );
+    }
+
+    // Insert data to database
+    let successCount = 0;
+    if (insertData.length > 0) {
+      const { error: insertError } = await supabase
+        .from('mata_kuliah')
+        .insert(insertData);
+
+      if (insertError) {
+        console.error('Error inserting mata kuliah:', insertError);
+        return NextResponse.json(
+          { message: 'Failed to insert data to database' },
+          { status: 500 }
+        );
+      }
+
+      successCount = insertData.length;
+    }
+
+    // Prepare response
+    const response: any = {
+      message: 'Upload completed',
+      successCount,
+      totalRows: processedData.length
+    };
+
+    if (duplicates.length > 0) {
+      response.duplicates = duplicates;
+      response.duplicateCount = duplicates.length;
+    }
+
+    return NextResponse.json(response);
+
+  } catch (error) {
+    console.error('Error processing upload:', error);
+    return NextResponse.json(
+      { message: 'Internal server error' },
+      { status: 500 }
+    );
+  }
+}