feat: add PiutangManager component for handling receivables and bulk payments

src/app/actions.ts

@@ -490,6 +490,11 @@ export async function processBulkPayment(data: {
   user_id: string
 }) {
   try {
+    const me = await getSessionUser()
+    if (!me || me.id !== data.creator_id) {
+      return { success: false, error: 'Unauthorized' }
+    }
+
     let currentBalance = 0
     if (data.use_balance) {
       const balanceData = await getBalancesAsCreator(data.creator_id)
@@ -499,7 +504,7 @@ export async function processBulkPayment(data: {
 
     const submissions = await prisma.submission.findMany({
       where: { id: { in: data.submission_ids } },
-      include: { order: { select: { date: true } } },
+      include: { order: { select: { date: true, status: true } } },
     })
 
     // Sort by order date ascending (oldest first)
@@ -515,11 +520,31 @@ export async function processBulkPayment(data: {
       const sub = submissions[i]
       const isLast = i === submissions.length - 1
 
+      // Don't process if order isn't CLOSE
+      if (sub.order.status !== 'CLOSE') continue
+
       const subBill = sub.bill || 0
       const prevPaid = sub.paid_amount || 0
-      const amountToCover = Math.max(0, subBill - prevPaid)
+      const prevSaldoUsed = sub.saldo_used || 0
+      const amountToCover = Math.max(0, subBill - prevPaid - prevSaldoUsed)
 
-      if (totalAvailable >= amountToCover && amountToCover > 0) {
+      if (amountToCover === 0) {
+        // It's already fully paid somehow, just mark LUNAS. Give excess cash if last.
+        let finalPaid = prevPaid
+        if (isLast && remainingCash > 0) {
+          finalPaid += remainingCash
+          remainingCash = 0
+        }
+        ops.push(
+          prisma.submission.update({
+            where: { id: sub.id },
+            data: { payment_status: 'LUNAS', paid_amount: finalPaid },
+          })
+        )
+        continue
+      }
+
+      if (totalAvailable >= amountToCover) {
         // Fully covered -> LUNAS
         let balanceToUse = Math.min(remainingBalance, amountToCover)
         remainingBalance -= balanceToUse
@@ -533,44 +558,31 @@ export async function processBulkPayment(data: {
           finalPaid += remainingCash
           remainingCash = 0
         }
+        let finalSaldoUsed = prevSaldoUsed + balanceToUse
 
         ops.push(
           prisma.submission.update({
             where: { id: sub.id },
-            data: { payment_status: 'LUNAS', paid_amount: finalPaid },
-          })
-        )
-      } else if (totalAvailable >= amountToCover && amountToCover === 0) {
-        // It's already fully paid somehow, just mark LUNAS. Give excess cash if last.
-        let finalPaid = prevPaid
-        if (isLast && remainingCash > 0) {
-          finalPaid += remainingCash
-          remainingCash = 0
-        }
-        ops.push(
-          prisma.submission.update({
-            where: { id: sub.id },
-            data: { payment_status: 'LUNAS', paid_amount: finalPaid },
+            data: { payment_status: 'LUNAS', paid_amount: finalPaid, saldo_used: finalSaldoUsed },
           })
         )
       } else if (totalAvailable > 0) {
-        // Partially covered -> BELUM_BAYAR. Only use cash.
-        let finalPaid = prevPaid + remainingCash
-        remainingCash = 0
-        totalAvailable = remainingBalance // only balance left, which can't be used
+        // Partially covered -> BELUM_BAYAR
+        let balanceToUse = Math.min(remainingBalance, totalAvailable)
+        remainingBalance -= balanceToUse
+        
+        let cashToUse = totalAvailable - balanceToUse
+        remainingCash -= cashToUse
+        
+        let finalPaid = prevPaid + cashToUse
+        let finalSaldoUsed = prevSaldoUsed + balanceToUse
+        
+        totalAvailable = 0
 
         ops.push(
           prisma.submission.update({
             where: { id: sub.id },
-            data: { payment_status: 'BELUM_BAYAR', paid_amount: finalPaid },
-          })
-        )
-      } else {
-        // totalAvailable == 0. No more money. Just leave it as is, or update to BELUM_BAYAR.
-        ops.push(
-          prisma.submission.update({
-            where: { id: sub.id },
-            data: { payment_status: 'BELUM_BAYAR' },
+            data: { payment_status: 'BELUM_BAYAR', paid_amount: finalPaid, saldo_used: finalSaldoUsed },
           })
         )
       }
@@ -873,3 +885,53 @@ export async function broadcastToMattermost(orderId: string, orderUrl: string) {
     return { success: false, error: 'Gagal mengirim ke Mattermost' }
   }
 }
+
+export async function getPiutangSummary(creator_id: string) {
+  const unpaidSubmissions = await prisma.submission.findMany({
+    where: {
+      order: {
+        creator_id,
+        status: 'CLOSE',
+      },
+      payment_status: 'BELUM_BAYAR',
+    },
+    include: {
+      user: {
+        select: { id: true, name: true, photo: true },
+      },
+      order: {
+        select: { id: true, title: true, date: true },
+      },
+    },
+    orderBy: {
+      order: { date: 'asc' },
+    },
+  })
+
+  const grouped = new Map<string, any>()
+  
+  unpaidSubmissions.forEach((sub) => {
+    if (!grouped.has(sub.user_id)) {
+      grouped.set(sub.user_id, {
+        user: sub.user,
+        totalPiutang: 0,
+        submissions: [],
+      })
+    }
+    
+    const u = grouped.get(sub.user_id)
+    
+    const paidAmount = (sub.paid_amount || 0) + (sub.saldo_used || 0)
+    const unpaid = Math.max(0, (sub.bill || 0) - paidAmount)
+    
+    if (unpaid > 0) {
+      u.totalPiutang += unpaid
+      u.submissions.push({
+         ...sub,
+         unpaidAmount: unpaid
+      })
+    }
+  })
+  
+  return Array.from(grouped.values()).filter(g => g.totalPiutang > 0)
+}