finance_tool/app/lib/actions.ts

'use server';

import { signIn } from '@/auth';
import { AuthError } from 'next-auth';

export async function authenticate(
  prevState: string | undefined,
  formData: FormData,
) {
  try {
    await signIn('credentials', Object.fromEntries(formData));
  } catch (error) {
    if (error instanceof AuthError) {
      switch (error.type) {
        case 'CredentialsSignin':
          return 'Invalid credentials.';
        default:
          return 'Something went wrong.';
      }
    }
    throw error;
  }
}
import { prisma } from '@/lib/prisma';
import { revalidatePath } from 'next/cache';
import { auth } from '@/auth';

export async function submitReimbursement(formData: FormData) {
  const session = await auth();
  if (!session?.user) throw new Error('Unauthorized');

  const amount = formData.get('amount') as string;
  const description = formData.get('description') as string;
  const category = formData.get('category') as string;
  const dateStr = formData.get('date') as string;

  await prisma.reimbursement.create({
    data: {
      amount: parseFloat(amount),
      description,
      category,
      createdAt: new Date(dateStr),
      userId: (session.user as any).id,
    },
  });

  revalidatePath('/me/reimbursements');
  revalidatePath('/me/dashboard');
}

export async function submitOvertime(formData: FormData) {
  const session = await auth();
  if (!session?.user) throw new Error('Unauthorized');

  const date = formData.get('date') as string;
  const hours = formData.get('hours') as string;
  const reason = formData.get('reason') as string;

  await prisma.overtime.create({
    data: {
      date: new Date(date),
      hours: parseFloat(hours),
      reason,
      userId: (session.user as any).id,
    },
  });

  revalidatePath('/me/overtime');
  revalidatePath('/me/dashboard');
}

export async function updateRequestStatus(id: string, type: 'reimbursement' | 'overtime', status: 'APPROVED' | 'REJECTED' | 'PAID') {
  const session = await auth();
  // Simple role check
  if ((session?.user as any)?.role !== 'ADMIN') throw new Error('Admin only');

  if (type === 'reimbursement') {
    await prisma.reimbursement.update({
      where: { id },
      data: { status },
    });
  } else {
    await prisma.overtime.update({
      where: { id },
      data: { status },
    });
  }

  revalidatePath('/admin/approvals');
  revalidatePath('/admin/dashboard');
}

export async function createBudget(formData: FormData) {
  const department = formData.get('department') as string;
  const amount = formData.get('amount') as string;
  const period = formData.get('period') as string;

  await prisma.budget.create({
    data: {
      department,
      amount: parseFloat(amount),
      period,
    },
  });

  revalidatePath('/admin/budgeting');
}

export async function createLedgerEntry(formData: FormData) {
  const amount = formData.get('amount') as string;
  const type = formData.get('type') as 'CREDIT' | 'DEBIT';
  const description = formData.get('description') as string;
  const categoryId = formData.get('categoryId') as string;
  const accountId = formData.get('accountId') as string;

  await prisma.companyTransaction.create({
    data: {
      amount: parseFloat(amount),
      type,
      description,
      categoryId,
      accountId,
    },
  });

  revalidatePath('/admin/ledger');
  revalidatePath('/admin/dashboard');
}