<?php

namespace Modules\AssetExchange\Services;

use App\Business;
use App\Transaction;
use App\User;
use App\Utils\ProductUtil;
use App\Utils\TransactionUtil;
use Illuminate\Support\Facades\Schema;
use Modules\AssetExchange\Models\Deal;
use Modules\AssetExchange\Models\Listing;

class AssetExchangeErpBridgeService
{
    public function __construct(
        protected ProductUtil $productUtil,
        protected TransactionUtil $transactionUtil
    ) {
    }

    public function createPurchaseOrder(
        Business $business,
        Listing $listing,
        Deal $deal,
        ?int $locationId = null,
        ?User $user = null
    ): ?Transaction {
        if (! Schema::hasTable('transactions')) {
            throw new \RuntimeException('جدول تراکنش‌های ERP موجود نیست.');
        }

        $amount = (int) ($deal->agreed_price ?: $listing->asking_price);
        $contactId = $listing->seller_contact_id;

        if (! $contactId) {
            throw new \RuntimeException('عرضه‌کننده برای ایجاد سفارش خرید مشخص نشده است.');
        }

        $refCount = $this->productUtil->setAndGetReferenceCount('purchase_order', $business->id);
        $refNo = $this->productUtil->generateReferenceNumber('purchase_order', $refCount);

        $transaction = Transaction::create([
            'business_id' => $business->id,
            'location_id' => $locationId,
            'type' => 'purchase_order',
            'status' => 'draft',
            'contact_id' => $contactId,
            'transaction_date' => now()->toDateTimeString(),
            'total_before_tax' => $amount,
            'tax_amount' => 0,
            'discount_type' => 'fixed',
            'discount_amount' => 0,
            'final_total' => $amount,
            'created_by' => $user?->id ?? auth()->id(),
            'ref_no' => $refNo,
            'additional_notes' => 'سفارش خرید AssetExchange — عرضه '.$listing->listing_code,
        ]);

        $this->transactionUtil->activityLog($transaction, 'added');

        $deal->update(['transaction_purchase_id' => $transaction->id]);

        return $transaction->fresh();
    }

    public function createQuotation(
        Business $business,
        Listing $listing,
        Deal $deal,
        ?int $locationId = null,
        ?User $user = null
    ): ?Transaction {
        if (! Schema::hasTable('transactions')) {
            throw new \RuntimeException('جدول تراکنش‌های ERP موجود نیست.');
        }

        $amount = (int) ($deal->agreed_price ?: $listing->asking_price);
        $contactId = $deal->buyer_contact_id;

        if (! $contactId) {
            throw new \RuntimeException('خریدار برای ایجاد پیش‌فاکتور مشخص نشده است.');
        }

        $refCount = $this->productUtil->setAndGetReferenceCount('sell', $business->id);
        $refNo = $this->productUtil->generateReferenceNumber('sell', $refCount);

        $transaction = Transaction::create([
            'business_id' => $business->id,
            'location_id' => $locationId,
            'type' => 'sell',
            'status' => 'draft',
            'sub_status' => 'quotation',
            'contact_id' => $contactId,
            'transaction_date' => now()->toDateTimeString(),
            'total_before_tax' => $amount,
            'tax_amount' => 0,
            'discount_type' => 'fixed',
            'discount_amount' => 0,
            'final_total' => $amount,
            'created_by' => $user?->id ?? auth()->id(),
            'ref_no' => $refNo,
            'additional_notes' => 'پیش‌فاکتور AssetExchange — معامله '.$deal->deal_code,
        ]);

        $this->transactionUtil->activityLog($transaction, 'added');

        $deal->update(['renovation_quote_id' => $transaction->id]);

        return $transaction->fresh();
    }

    public function createSellInvoice(
        Business $business,
        Listing $listing,
        Deal $deal,
        ?int $locationId = null,
        ?User $user = null
    ): ?Transaction {
        if (! Schema::hasTable('transactions')) {
            throw new \RuntimeException('جدول تراکنش‌های ERP موجود نیست.');
        }

        $amount = (int) ($deal->agreed_price ?: $listing->asking_price);
        $contactId = $deal->buyer_contact_id;

        if (! $contactId) {
            throw new \RuntimeException('خریدار برای ایجاد فاکتور فروش مشخص نشده است.');
        }

        $refCount = $this->productUtil->setAndGetReferenceCount('sell', $business->id);
        $refNo = $this->productUtil->generateReferenceNumber('sell', $refCount);

        $transaction = Transaction::create([
            'business_id' => $business->id,
            'location_id' => $locationId,
            'type' => 'sell',
            'status' => 'draft',
            'contact_id' => $contactId,
            'transaction_date' => now()->toDateTimeString(),
            'total_before_tax' => $amount,
            'tax_amount' => 0,
            'discount_type' => 'fixed',
            'discount_amount' => 0,
            'final_total' => $amount,
            'created_by' => $user?->id ?? auth()->id(),
            'ref_no' => $refNo,
            'additional_notes' => 'فاکتور فروش AssetExchange — معامله '.$deal->deal_code,
        ]);

        $this->transactionUtil->activityLog($transaction, 'added');

        $deal->update(['transaction_sell_id' => $transaction->id]);

        return $transaction->fresh();
    }
}