<?php

namespace App\Services\Admin\Finance;

use App\Enums\CashTransactionType;
use App\Models\CashAccount;
use App\Models\CashTransaction;
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\Pagination\LengthAwarePaginator as PaginationLengthAwarePaginator;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\ValidationException;

class CashAccountService
{
    use HandlesCashTransactions, RegistersMedia;

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

    public function get(): ?CashAccount
    {
        return CashAccount::select(['id', 'name', 'balance'])->first();
    }

    public function getAllTransactions(array $filters = []): Collection
    {
        $cashAccount = $this->get();

        if (! $cashAccount) {
            return collect();
        }

        return $cashAccount->cashTransactions()
            ->select(['id', 'created_by_id', 'reference_type', 'reference_id', 'amount', 'balance_after', 'type', 'description', 'created_at'])
            ->with('createdBy.userProfile', 'media')
            ->when($filters['type'] ?? null, function ($query, $type) {
                $query->where('type', $type);
            })
            ->latest()
            ->get()
            ->map(fn (CashTransaction $transaction) => $this->formatTransaction($transaction));
    }

    public function paginatedTransactions(int $perPage = 25, string $search = '', string $sort = 'created_at', string $direction = 'desc', array $filters = []): LengthAwarePaginator
    {
        $cashAccount = $this->get();

        if (! $cashAccount) {
            return new PaginationLengthAwarePaginator(collect(), 0, $perPage);
        }

        $paginator = $cashAccount->cashTransactions()
            ->select(['id', 'created_by_id', 'reference_type', 'reference_id', 'amount', 'balance_after', 'type', 'description', 'created_at'])
            ->with('createdBy.userProfile', 'media')
            ->when($search, fn ($q) => $q->where('description', 'like', "%{$search}%"))
            ->when($filters['type'] ?? null, function ($query, $type) {
                $query->where('type', $type);
            })
            ->orderBy($sort, $direction)
            ->paginate($perPage);

        $paginator->getCollection()->transform(fn (CashTransaction $transaction) => $this->formatTransaction($transaction));

        return $paginator;
    }

    private function formatTransaction(CashTransaction $transaction): array
    {
        $media = $transaction->getFirstMedia('receipts');

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

        $s3Key = $media->file_name;

        if (str_starts_with($s3Key, '/') || ! str_contains($s3Key, '/')) {
            $s3Key = $media->getPath();
        }

        return $transaction->toArray() + [
            'receipt_key' => $s3Key,
            'receipt_url' => $this->s3Service->getTemporaryUrl($s3Key),
        ];
    }

    public function deposit(array $data): CashTransaction
    {
        $transaction = DB::transaction(fn () => $this->creditCash(
            amount: $data['amount'],
            description: $data['description'],
        ));

        if (! empty($data['receipt_key'])) {
            $this->registerMedia($transaction, $data['receipt_key'], 'receipts', ['thumb' => true], $data['file_size'] ?? null, $data['file_mime_type'] ?? null);
        }

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Setoran Kas Toko',
            body: 'Setoran sebesar Rp '.number_format($data['amount'], 0, ',', '.').' berhasil dicatat'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.cash-accounts.index'),
        );

        return $transaction;
    }

    public function withdrawal(array $data): CashTransaction
    {
        $transaction = DB::transaction(fn () => $this->debitCash(
            amount: $data['amount'],
            description: $data['description'],
            type: CashTransactionType::WITHDRAWAL,
        ));

        if (! empty($data['receipt_key'])) {
            $this->registerMedia($transaction, $data['receipt_key'], 'receipts', ['thumb' => true], $data['file_size'] ?? null, $data['file_mime_type'] ?? null);
        }

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Penarikan Kas Toko',
            body: 'Penarikan sebesar Rp '.number_format($data['amount'], 0, ',', '.').' berhasil dicatat'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.cash-accounts.index'),
        );

        return $transaction;
    }

    public function updateTransaction(CashTransaction $transaction, array $data): CashTransaction
    {
        $transaction = DB::transaction(function () use ($transaction, $data) {
            if (! in_array($transaction->type, [CashTransactionType::DEPOSIT, CashTransactionType::WITHDRAWAL])) {
                throw ValidationException::withMessages([
                    'amount' => 'Transaksi ini tidak dapat diedit.',
                ]);
            }

            $cashAccount = CashAccount::firstOrFail();
            $oldAmount = $transaction->amount;
            $newAmount = $data['amount'];
            $isDeposit = $transaction->type === CashTransactionType::DEPOSIT;

            $difference = $isDeposit ? $newAmount - $oldAmount : $oldAmount - $newAmount;

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

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

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

            if (array_key_exists('receipt_key', $data)) {
                $currentMedia = $transaction->getFirstMedia('receipts');
                $currentKey = $currentMedia?->file_name;

                if ($currentMedia && ! str_contains($currentKey, '/')) {
                    $currentKey = $currentMedia->getPath();
                }

                if ($data['receipt_key'] !== $currentKey) {
                    $transaction->clearMediaCollection('receipts');

                    if (! empty($data['receipt_key'])) {
                        $this->registerMedia($transaction, $data['receipt_key'], 'receipts', ['thumb' => true], $data['file_size'] ?? null, $data['file_mime_type'] ?? null);
                    }
                }
            }

            return $transaction;
        });

        NotificationService::notify(
            roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
            title: 'Transaksi Kas Diperbarui',
            body: 'Transaksi kas sebesar Rp '.number_format($transaction->amount, 0, ',', '.').' berhasil diperbarui'.' oleh '.auth()->user()->full_name.'.',
            url: route('admin.finance.cash-accounts.index'),
        );

        return $transaction;
    }

    public function deleteTransaction(CashTransaction $transaction): bool
    {
        return DB::transaction(function () use ($transaction) {
            if (! in_array($transaction->type, [CashTransactionType::DEPOSIT, CashTransactionType::WITHDRAWAL])) {
                throw ValidationException::withMessages([
                    'amount' => 'Transaksi ini tidak dapat dihapus.',
                ]);
            }

            $cashAccount = CashAccount::firstOrFail();
            $isDeposit = $transaction->type === CashTransactionType::DEPOSIT;

            $newBalance = $isDeposit
                ? $cashAccount->balance - $transaction->amount
                : $cashAccount->balance + $transaction->amount;

            if ($newBalance < 0) {
                throw ValidationException::withMessages([
                    'amount' => 'Saldo tidak mencukupi untuk menghapus transaksi ini.',
                ]);
            }

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

            $transaction->clearMediaCollection('receipts');

            $deleted = $transaction->delete();

            if ($deleted) {
                NotificationService::notify(
                    roles: ['Owner', 'Developer', 'Direktur', 'Admin Toko'],
                    title: 'Transaksi Kas Dihapus',
                    body: 'Transaksi kas sebesar Rp '.number_format($transaction->amount, 0, ',', '.').' berhasil dihapus'.' oleh '.auth()->user()->full_name.'.',
                    url: route('admin.finance.cash-accounts.index'),
                );
            }

            return $deleted;
        });
    }
}