<?php

namespace App\Services\Admin\Finance;

use App\Enums\CashTransactionType;
use App\Enums\Role;
use App\Models\CashAccount;
use App\Models\Expense;
use App\Services\Concerns\HandlesCashTransactions;
use App\Services\Concerns\RegistersMedia;
use App\Services\NotificationService;
use App\Services\S3PresignedService;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\ValidationException;

class ExpenseService
{
    use HandlesCashTransactions, RegistersMedia;

    public function __construct(
        private S3PresignedService $s3Service,
    ) {}

    public function paginated(int $perPage = 25, string $search = '', string $sort = 'created_at', string $direction = 'desc', array $filters = [], ?int $highlight = null): LengthAwarePaginator
    {
        $paginator = Expense::query()
            ->select(['id', 'created_by_id', 'amount', 'description', 'created_at'])
            ->with('createdBy.userProfile', 'media')
            ->when($highlight, fn ($q) => $q->where('id', $highlight))
            ->when($search, fn ($q) => $q->where('description', 'like', "%{$search}%"))
            ->orderBy($sort, $direction)
            ->paginate($perPage);

        $paginator->getCollection()->transform(fn (Expense $expense) => $this->formatExpense($expense));

        return $paginator;
    }

    public function store(array $data): Expense
    {
        $expense = DB::transaction(function () use ($data) {
            $cashTransaction = $this->debitCash(
                amount: $data['amount'],
                description: $data['description'],
            );

            $expense = Expense::create([
                'cash_transaction_id' => $cashTransaction->id,
                'created_by_id' => auth()->id(),
                'amount' => $data['amount'],
                'description' => $data['description'],
            ]);

            if (array_key_exists('receipt_key', $data)) {
                $this->syncReceipt($expense, $data['receipt_key'] ?? null, 'photos', 'expense_receipt', $data['file_size'] ?? null, $data['file_mime_type'] ?? null);
            }

            return $expense;
        });

        NotificationService::notify(
            roles: [Role::OWNER, Role::DEVELOPER, Role::DIREKTUR, Role::ADMIN_TOKO],
            title: 'Pengeluaran Baru',
            body: 'Pengeluaran sebesar Rp '.number_format($data['amount'], 0, ',', '.').' berhasil dicatat'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.expenses.index', ['highlight' => $expense->id]),
        );

        return $expense;
    }

    public function update(Expense $expense, array $data): Expense
    {
        $expense = DB::transaction(function () use ($expense, $data) {
            $cashAccount = CashAccount::firstOrFail();
            $cashTransaction = $expense->cashTransaction;

            $oldAmount = $expense->amount;
            $newAmount = $data['amount'];
            $difference = $newAmount - $oldAmount;

            if ($difference > 0 && $cashAccount->balance < $difference) {
                throw ValidationException::withMessages([
                    'amount' => 'Saldo tidak mencukupi.',
                ]);
            }

            $newBalance = $cashAccount->balance - $difference;
            $cashAccount->update(['balance' => $newBalance]);

            $cashTransaction->update([
                'amount' => $newAmount,
                'balance_after' => $newBalance,
                'description' => $data['description'],
            ]);

            $expense->update([
                'amount' => $newAmount,
                'description' => $data['description'],
            ]);

            if (array_key_exists('receipt_key', $data)) {
                $this->syncReceipt($expense, $data['receipt_key'] ?? null, 'photos', 'expense_receipt', $data['file_size'] ?? null, $data['file_mime_type'] ?? null);
            }

            return $expense;
        });

        NotificationService::notify(
            roles: [Role::OWNER, Role::DEVELOPER, Role::DIREKTUR, Role::ADMIN_TOKO],
            title: 'Pengeluaran Diperbarui',
            body: 'Pengeluaran sebesar Rp '.number_format($expense->amount, 0, ',', '.').' berhasil diperbarui'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.expenses.index', ['highlight' => $expense->id]),
        );

        return $expense;
    }

    public function destroy(Expense $expense): bool
    {
        return DB::transaction(function () use ($expense) {
            $this->creditCash(
                amount: $expense->amount,
                description: 'Pembatalan pengeluaran: '.$expense->description,
                type: CashTransactionType::DEPOSIT,
            );

            $media = $expense->getFirstMedia('photos');
            if ($media) {
                Cache::forget("expense_receipt_{$media->id}");
            }

            $deleted = $expense->delete();

            if ($deleted) {
                NotificationService::notify(
                    roles: [Role::OWNER, Role::DEVELOPER, Role::DIREKTUR, Role::ADMIN_TOKO],
                    title: 'Pengeluaran Dihapus',
                    body: 'Pengeluaran sebesar Rp '.number_format($expense->amount, 0, ',', '.').' berhasil dihapus'.' oleh '.auth()->user()->full_name.'.',
                    url: route('admin.finance.expenses.index'),
                );
            }

            return $deleted;
        });
    }

    private function formatExpense(Expense $expense): array
    {
        $media = $expense->getFirstMedia('photos');

        if (! $media) {
            return $expense->toArray() + [
                'receipt_key' => null,
                'receipt_url' => null,
                'receipt_conversion_url' => null,
            ];
        }

        $s3Key = $media->getCustomProperty('s3_key') ?? $media->getPath();

        $cacheKey = "expense_receipt_{$media->id}";
        $receiptUrl = Cache::remember($cacheKey, now()->addMinutes(55), function () use ($s3Key) {
            return $this->s3Service->getTemporaryUrl($s3Key);
        });

        $conversionCacheKey = "expense_receipt_conversion_{$media->id}";
        $receiptConversionUrl = Cache::remember($conversionCacheKey, now()->addMinutes(55), function () use ($media) {
            return $this->s3Service->getTemporaryUrl($media->getPath('thumb'));
        });

        return $expense->toArray() + [
            'receipt_key' => $s3Key,
            'receipt_url' => $receiptUrl,
            'receipt_conversion_url' => $receiptConversionUrl,
        ];
    }
}