<?php

namespace Modules\AssetExchange\Services;

use App\Business;
use App\Contact;
use App\Utils\Util;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;
use Modules\AssetExchange\Models\Commission;
use Modules\AssetExchange\Models\Deal;
use Modules\AssetExchange\Models\Listing;

class AssetExchangeCrmBridgeService
{
    public function __construct(
        protected Util $commonUtil
    ) {
    }

    public function createLeadFromListing(Business $business, Listing $listing): ?Contact
    {
        if (! Schema::hasTable('contacts')) {
            throw new \RuntimeException('جدول مخاطبین موجود نیست.');
        }

        if (! $this->isCrmAvailable()) {
            return null;
        }

        $listing->loadMissing('seller');

        if ($listing->seller_contact_id && $listing->seller) {
            return $this->promoteContactToLead($listing->seller, $listing);
        }

        $contact = Contact::create([
            'business_id' => $business->id,
            'type' => 'lead',
            'name' => $listing->title,
            'mobile' => null,
            'crm_lead_title' => $listing->title,
            'crm_lead_description' => $listing->description,
            'crm_lead_value' => $this->commonUtil->num_f($listing->asking_price, false),
            'crm_source' => $this->resolveAexSourceId($business->id),
            'crm_life_stage' => $this->resolveDefaultLifeStageId($business->id),
            'created_by' => auth()->id(),
        ]);

        $listing->update(['seller_contact_id' => $contact->id]);

        return $contact;
    }

    public function syncCommissions(Business $business, Deal $deal): int
    {
        if (! Schema::hasTable('aex_commissions')) {
            return 0;
        }

        $deal->loadMissing('commissions', 'listing');

        if ($deal->status !== 'completed') {
            throw new \RuntimeException('فقط معاملات تکمیل‌شده قابل همگام‌سازی کمیسیون هستند.');
        }

        $synced = 0;

        return DB::transaction(function () use ($business, $deal, &$synced) {
            foreach ($deal->commissions as $commission) {
                if ($commission->status === 'paid' && $commission->crm_commission_id) {
                    continue;
                }

                $crmId = $this->syncCommissionToCrm($business, $deal, $commission);
                if ($crmId) {
                    $commission->update([
                        'crm_commission_id' => $crmId,
                        'status' => 'synced',
                    ]);
                    $synced++;
                }
            }

            return $synced;
        });
    }

    protected function promoteContactToLead(Contact $contact, Listing $listing): Contact
    {
        $contact->update([
            'type' => $contact->type === 'supplier' ? 'supplier' : 'lead',
            'crm_lead_title' => $listing->title,
            'crm_lead_description' => $listing->description,
            'crm_lead_value' => $this->commonUtil->num_f($listing->asking_price, false),
            'crm_source' => $contact->crm_source ?: $this->resolveAexSourceId($contact->business_id),
            'crm_life_stage' => $contact->crm_life_stage ?: $this->resolveDefaultLifeStageId($contact->business_id),
        ]);

        return $contact->fresh();
    }

    protected function syncCommissionToCrm(Business $business, Deal $deal, Commission $commission): ?int
    {
        if (! class_exists(\Modules\Crm\Entities\CrmContactPersonCommission::class)) {
            return null;
        }

        if (! Schema::hasTable('crm_contact_person_commissions')) {
            return null;
        }

        if (! $commission->user_id || ! $deal->transaction_sell_id) {
            return null;
        }

        $record = \Modules\Crm\Entities\CrmContactPersonCommission::updateOrCreate(
            [
                'contact_person_id' => $commission->user_id,
                'transaction_id' => $deal->transaction_sell_id,
            ],
            [
                'commission_amount' => $commission->amount,
            ]
        );

        return $record->id;
    }

    protected function isCrmAvailable(): bool
    {
        return Schema::hasColumn('contacts', 'crm_source')
            && Schema::hasColumn('contacts', 'crm_life_stage');
    }

    protected function resolveAexSourceId(int $businessId): ?string
    {
        if (! Schema::hasTable('categories')) {
            return 'aex_listing';
        }

        $source = \App\Category::where('business_id', $businessId)
            ->where('category_type', 'source')
            ->where('name', 'like', '%AssetExchange%')
            ->value('id');

        return $source ? (string) $source : 'aex_listing';
    }

    protected function resolveDefaultLifeStageId(int $businessId): ?string
    {
        if (! Schema::hasTable('categories')) {
            return null;
        }

        return \App\Category::where('business_id', $businessId)
            ->where('category_type', 'life_stage')
            ->orderBy('id')
            ->value('id');
    }
}