<?php

namespace App\Services\Admin\Finance;

use App\Enums\EmployeeAdvanceStatus;
use App\Models\EmployeeAdvance;
use App\Services\Concerns\HandlesCashTransactions;
use App\Services\NotificationService;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;

class EmployeeAdvanceService
{
    use HandlesCashTransactions;

    private function canViewAll(): bool
    {
        return auth()->user()->hasAnyRole(['developer', 'owner', 'direktur', 'admin-toko']);
    }

    public function getAll(array $filters = []): Collection
    {
        return EmployeeAdvance::select(['id', 'employee_id', 'amount', 'paid_amount', 'description', 'due_date', 'status', 'created_at'])
            ->with(['employee.user.userProfile'])
            ->when(! $this->canViewAll(), fn ($q) => $q->whereHas('employee', fn ($eq) => $eq->where('user_id', auth()->id())))
            ->latest()
            ->get();
    }

    public function paginated(int $perPage = 25, string $search = '', string $sort = 'created_at', string $direction = 'desc', array $filters = []): LengthAwarePaginator
    {
        return EmployeeAdvance::query()
            ->select(['id', 'employee_id', 'amount', 'paid_amount', 'description', 'due_date', 'status', 'created_at'])
            ->with(['employee.user.userProfile'])
            ->when(! $this->canViewAll(), fn ($q) => $q->whereHas('employee', fn ($eq) => $eq->where('user_id', auth()->id())))
            ->when($filters['status'] ?? null, fn ($q) => $q->where('status', $filters['status']))
            ->when($search, fn ($q) => $q->where('description', 'like', "%{$search}%"))
            ->orderBy($sort, $direction)
            ->paginate($perPage);
    }

    public function create(array $data): EmployeeAdvance
    {
        $employee = auth()->user()->employee;

        if (! $employee) {
            throw new \Exception('Anda tidak terdaftar sebagai karyawan.');
        }

        $employeeAdvance = EmployeeAdvance::create([
            'employee_id' => $employee->id,
            'amount' => $data['amount'],
            'description' => $data['description'],
            'due_date' => $data['due_date'],
            'status' => EmployeeAdvanceStatus::PENDING,
        ]);

        $employeeAdvance->load('employee.user');

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Kasbon Baru',
            body: 'Kasbon sebesar Rp '.number_format($data['amount'], 0, ',', '.')." dari {$employeeAdvance->employee->name} menunggu persetujuan".' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.employee-advances.index'),
            additionalUser: $employeeAdvance->employee->user ?? null,
        );

        return $employeeAdvance;
    }

    public function update(EmployeeAdvance $employeeAdvance, array $data): EmployeeAdvance
    {
        $employeeAdvance->update([
            'amount' => $data['amount'],
            'description' => $data['description'],
            'due_date' => $data['due_date'],
        ]);

        return $employeeAdvance;
    }

    public function delete(EmployeeAdvance $employeeAdvance): bool
    {
        if ($employeeAdvance->status === EmployeeAdvanceStatus::APPROVED && $employeeAdvance->cash_transaction_id) {
            $cashAccount = $this->getCashAccount();
            $newBalance = $cashAccount->balance + $employeeAdvance->amount;
            $cashAccount->update(['balance' => $newBalance]);
            $employeeAdvance->cashTransaction()->delete();
        }

        return $employeeAdvance->delete();
    }

    public function approve(EmployeeAdvance $employeeAdvance): EmployeeAdvance
    {
        $cashTransaction = $this->debitCash(
            amount: $employeeAdvance->amount,
            description: 'Kasbon: '.$employeeAdvance->description,
        );

        $employeeAdvance->update([
            'cash_transaction_id' => $cashTransaction->id,
            'status' => EmployeeAdvanceStatus::APPROVED,
            'verified_by_id' => auth()->id(),
            'verified_at' => now(),
        ]);

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Kasbon Disetujui',
            body: 'Kasbon sebesar Rp '.number_format($employeeAdvance->amount, 0, ',', '.').' telah disetujui'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.employee-advances.index'),
            additionalUser: $employeeAdvance->employee->user ?? null,
        );

        return $employeeAdvance;
    }

    public function pay(EmployeeAdvance $employeeAdvance): EmployeeAdvance
    {
        $employeeAdvance = DB::transaction(function () use ($employeeAdvance) {
            $cashTransaction = $this->creditCash(
                amount: $employeeAdvance->amount,
                description: 'Pembayaran kasbon: '.$employeeAdvance->description,
            );

            $employeeAdvance->update([
                'status' => EmployeeAdvanceStatus::PAID,
                'paid_by_id' => auth()->id(),
                'paid_amount' => $employeeAdvance->amount,
                'paid_at' => now(),
                'repayment_cash_transaction_id' => $cashTransaction->id,
            ]);

            return $employeeAdvance;
        });

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Kasbon Dibayar',
            body: 'Kasbon sebesar Rp '.number_format($employeeAdvance->amount, 0, ',', '.').' telah dibayar lunas'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.employee-advances.index'),
            additionalUser: $employeeAdvance->employee->user ?? null,
        );

        return $employeeAdvance;
    }
}