<?php

namespace Modules\Crm\Services;

use Modules\Crm\Entities\CrmCompany;
use Modules\Crm\Entities\CrmPhoneFollowUp;

class CompanyProfileService
{
    protected $profileFields = [
        'legal_name', 'brand_name', 'company_type', 'industry_category_id',
        'employee_count_range', 'website', 'email', 'main_phone',
        'registration_number', 'address', 'city', 'province', 'description',
    ];

    public function calculateCompletion(CrmCompany $company): int
    {
        $filled = 0;
        $total = count($this->profileFields);

        foreach ($this->profileFields as $field) {
            if (! empty($company->{$field})) {
                $filled++;
            }
        }

        $relations = ['contacts', 'branches', 'phones', 'requirements'];
        $total += count($relations);
        foreach ($relations as $rel) {
            if ($company->{$rel}()->exists()) {
                $filled++;
            }
        }

        $completion = (int) round(($filled / max($total, 1)) * 100);
        $company->update(['profile_completion' => $completion]);

        $this->syncPhoneFollowUps($company);

        return $completion;
    }

    public function getEmptyFields(CrmCompany $company): array
    {
        $empty = [];
        foreach ($this->profileFields as $field) {
            if (empty($company->{$field})) {
                $empty[] = $field;
            }
        }

        if (! $company->contacts()->exists()) {
            $empty[] = 'contacts';
        }
        if (! $company->branches()->exists()) {
            $empty[] = 'branches';
        }
        if (! $company->phones()->exists()) {
            $empty[] = 'phones';
        }
        if (! $company->requirements()->exists()) {
            $empty[] = 'requirements';
        }

        return $empty;
    }

    public function getSuggestedFieldsForCall(CrmCompany $company, int $limit = 3): array
    {
        return array_slice($this->getEmptyFields($company), 0, $limit);
    }

    public function findOrCreateForPhone(CrmPhoneFollowUp $phone, int $user_id): CrmCompany
    {
        if (! empty($phone->company_id)) {
            return CrmCompany::findOrFail($phone->company_id);
        }

        $company = CrmCompany::create([
            'business_id' => $phone->business_id,
            'brand_name' => $phone->company_name ?? $phone->contact_name,
            'main_phone' => $phone->mobile_number,
            'city' => $phone->city,
            'province' => $phone->province,
            'industry_category_id' => $phone->industry_category_id,
            'created_by' => $user_id,
        ]);

        $phone->update(['company_id' => $company->id]);
        $this->calculateCompletion($company);

        return $company;
    }

    protected function syncPhoneFollowUps(CrmCompany $company): void
    {
        CrmPhoneFollowUp::where('company_id', $company->id)->update([
            'profile_completion' => $company->profile_completion,
            'company_name' => $company->brand_name ?? $company->legal_name,
        ]);
    }
}