<?php

namespace App\Http\Controllers\Customer;

use App\Http\Controllers\SuperController;
use App\Models\Fund;
use App\Models\Product;
use App\Services\ConfigService;
use App\Services\WalletBalanceService;
use Illuminate\Http\Request;
use Rooyesh\Wallet\interfaces\TransactionInterface;
use Rooyesh\Wallet\interfaces\WalletInterface;
use Rooyesh\Wallet\models\Wallet;
use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;

/**
 * قلک per-product — انتقال فقط TransactionInterface؛ بدون سند حسابداری.
 */
class FundController extends SuperController
{
    public function __construct(Request $request)
    {
        $model = Fund::class;
        $this->with = ['wallet', 'product'];
        $select = ['*'];
        $search = ['title'];
        $request->request->add(['customer_id' => auth('customer')->id()]);
        $query = Fund::with($this->with)->where('customer_id', auth('customer')->id());
        parent::__construct($model, $this->with, $select, null, $query, $search);
    }

    public function store(Request $request)
    {
        $this->assertProductFundsEnabled();

        $data = $request->all();
        $productId = (int) ($data['product_id'] ?? 0);
        if ($productId <= 0) {
            throw new UnprocessableEntityHttpException('انتخاب محصول برای قلک الزامی است');
        }

        $product = Product::query()->find($productId);
        if (! $product) {
            throw new UnprocessableEntityHttpException('محصول یافت نشد');
        }

        $title = trim((string) ($data['title'] ?? ''));
        if ($title === '') {
            throw new UnprocessableEntityHttpException('عنوان قلک الزامی است');
        }

        $customerId = (int) auth('customer')->id();
        $fund = Fund::create([
            'title' => $title,
            'file_id' => $data['file_id'] ?? null,
            'customer_id' => $customerId,
            'product_id' => $productId,
        ]);

        // کیف قلک را از همان ابتدا با product_id بساز (بدون سند حسابداری)
        new WalletInterface(
            $customerId,
            auth('customer')->user()->type,
            $fund->id,
            $productId
        );

        return response()->json($fund->load(['wallet', 'product']));
    }

    public function update(Request $request, $id)
    {
        $this->assertProductFundsEnabled();

        $fund = $this->ownedFund((int) $id);
        $title = trim((string) ($request->input('title') ?? $fund->title));
        if ($title === '') {
            throw new UnprocessableEntityHttpException('عنوان قلک الزامی است');
        }

        // product_id بعد از ساخت عوض نمی‌شود
        $fund->update([
            'title' => $title,
            'file_id' => $request->input('file_id', $fund->file_id),
        ]);

        return response()->json($fund->fresh(['wallet', 'product']));
    }

    public function deposit(Request $request)
    {
        $this->assertProductFundsEnabled();

        $data = $request->all();
        $fund = $this->ownedFund((int) ($data['fund_id'] ?? 0));
        $value = (float) ($data['value'] ?? 0);
        if ($value <= 0) {
            throw new UnprocessableEntityHttpException('مقدار نامعتبر است');
        }

        $customer = auth('customer')->user();
        $customerId = (int) $customer->id;
        $ownerType = (int) $customer->type;
        $productId = (int) ($fund->product_id ?? 0);

        $balanceService = app(WalletBalanceService::class);
        $free = $productId > 0
            ? $balanceService->freeProductGold($customerId, $productId, $ownerType)
            : $balanceService->effectiveMainWalletGold($customerId, $ownerType);

        if ($free < $value) {
            throw new UnprocessableEntityHttpException('موجودی کمتر از مقدار وارد شده است');
        }

        [$sourceFundId, $sourceProductId] = $this->sourceWalletKeys($productId);
        $source = new WalletInterface($customerId, $ownerType, $sourceFundId, $sourceProductId);
        $dest = new WalletInterface($customerId, $ownerType, $fund->id, $productId > 0 ? $productId : null);

        // فقط جابه‌جایی داخلی — بدون Accounting*
        new TransactionInterface($source, [
            'gold' => $value,
            'fund_id' => $fund->id,
            'product_id' => $productId > 0 ? $productId : null,
            'expire_at' => now(),
            'active' => true,
        ], 6, false);

        new TransactionInterface($dest, [
            'gold' => $value,
            'fund_id' => $fund->id,
            'product_id' => $productId > 0 ? $productId : null,
            'expire_at' => now(),
            'active' => true,
        ], 5, true);

        return response()->json(true);
    }

    public function withdraw(Request $request)
    {
        $this->assertProductFundsEnabled();

        $data = $request->all();
        $fund = $this->ownedFund((int) ($data['fund_id'] ?? 0));
        $value = (float) ($data['value'] ?? 0);
        if ($value <= 0) {
            throw new UnprocessableEntityHttpException('مقدار نامعتبر است');
        }

        $customer = auth('customer')->user();
        $customerId = (int) $customer->id;
        $ownerType = (int) $customer->type;
        $productId = (int) ($fund->product_id ?? 0);

        $source = new WalletInterface($customerId, $ownerType, $fund->id, $productId > 0 ? $productId : null);
        if ((float) $source->wallet->gold < $value) {
            throw new UnprocessableEntityHttpException('موجودی کمتر از مقدار وارد شده است');
        }

        [$destFundId, $destProductId] = $this->sourceWalletKeys($productId);
        $dest = new WalletInterface($customerId, $ownerType, $destFundId, $destProductId);

        new TransactionInterface($source, [
            'gold' => $value,
            'fund_id' => $fund->id,
            'product_id' => $productId > 0 ? $productId : null,
            'expire_at' => now(),
            'active' => true,
        ], 6, false);

        new TransactionInterface($dest, [
            'gold' => $value,
            'fund_id' => $fund->id,
            'product_id' => $productId > 0 ? $productId : null,
            'expire_at' => now(),
            'active' => true,
        ], 5, true);

        return response()->json(true);
    }

    public function show($id)
    {
        $fund = $this->ownedFund((int) $id);

        return response()->json($fund->load(['wallet', 'product']));
    }

    public function destroy($id)
    {
        $this->assertProductFundsEnabled();

        $fund = $this->ownedFund((int) $id);
        $wallet = Wallet::where('owner', auth('customer')->id())
            ->where('fund_id', $fund->id)
            ->first();

        if ($wallet && (float) $wallet->gold > 0) {
            throw new UnprocessableEntityHttpException('به علت داشتن موجودی امکان حذف قلک وجود ندارد');
        }

        Fund::destroy($fund->id);

        return response()->json(true);
    }

    private function assertProductFundsEnabled(): void
    {
        if (! app(ConfigService::class)->isProductFundsEnabled()) {
            throw new UnprocessableEntityHttpException('قابلیت قلک محصول غیرفعال است');
        }
    }

    private function ownedFund(int $id): Fund
    {
        if ($id <= 0) {
            throw new UnprocessableEntityHttpException('قلک نامعتبر است');
        }

        $fund = Fund::with(['wallet', 'product'])
            ->where('customer_id', auth('customer')->id())
            ->find($id);

        if (! $fund) {
            throw new UnprocessableEntityHttpException('قلک یافت نشد');
        }

        return $fund;
    }

    /** @return array{0: null, 1: int|null} */
    private function sourceWalletKeys(int $productId): array
    {
        if ($productId <= 0) {
            return [null, null];
        }

        if (app(ConfigService::class)->isMainWalletProduct($productId)) {
            return [null, null];
        }

        return [null, $productId];
    }
}