<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2023. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Export\CSV;

use App\Libraries\MultiDB;
use App\Models\Vendor;
use App\Models\Company;
use App\Transformers\VendorContactTransformer;
use App\Transformers\VendorTransformer;
use App\Utils\Ninja;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\App;
use League\Csv\Writer;

class VendorExport extends BaseExport
{

    private $vendor_transformer;

    private $contact_transformer;

    public Writer $csv;

    public string $date_key = 'created_at';

    public function __construct(Company $company, array $input)
    {
        $this->company = $company;
        $this->input = $input;
        $this->vendor_transformer = new VendorTransformer();
        $this->contact_transformer = new VendorContactTransformer();
    }

    public function init(): Builder
    {

        MultiDB::setDb($this->company->db);
        App::forgetInstance('translator');
        App::setLocale($this->company->locale());
        $t = app('translator');
        $t->replace(Ninja::transformTranslations($this->company->settings));

        //load the CSV document from a string
        $this->csv = Writer::createFromString();

        if (count($this->input['report_keys']) == 0) {
            $this->input['report_keys'] = array_values($this->vendor_report_keys);
        }
        
        $query = Vendor::query()->with('contacts')
                        ->withTrashed()
                        ->where('company_id', $this->company->id)
                        ->where('is_deleted', 0);

        $query = $this->addDateRange($query);

        return $query;

    }

    public function returnJson()
    {
        $query = $this->init();

        $headerdisplay = $this->buildHeader();

        $header = collect($this->input['report_keys'])->map(function ($key, $value) use($headerdisplay){
                return ['identifier' => $value, 'display_value' => $headerdisplay[$value]];
            })->toArray();

        $report = $query->cursor()
                ->map(function ($resource) {
                    $row = $this->buildRow($resource);
                    return $this->processMetaData($row, $resource);
                })->toArray();
        
        return array_merge(['columns' => $header], $report);
    }

    public function run()
    {
    
        $query = $this->init();

        //insert the header
        $this->csv->insertOne($this->buildHeader());

        $query->cursor()
              ->each(function ($vendor) {
                  $this->csv->insertOne($this->buildRow($vendor));
              });

        return $this->csv->toString();
    }

    private function buildRow(Vendor $vendor) :array
    {
        $transformed_contact = false;

        $transformed_vendor = $this->vendor_transformer->transform($vendor);

        if ($contact = $vendor->contacts()->first()) {
            $transformed_contact = $this->contact_transformer->transform($contact);
        }

        $entity = [];

        foreach (array_values($this->input['report_keys']) as $key) {
            $parts = explode('.', $key);

            if (is_array($parts) && $parts[0] == 'vendor' && array_key_exists($parts[1], $transformed_vendor)) {
                $entity[$key] = $transformed_vendor[$parts[1]];
            } elseif (is_array($parts) && $parts[0] == 'vendor_contact' && isset($transformed_contact[$parts[1]])) {
                $entity[$key] = $transformed_contact[$parts[1]];
            } else {
                $entity[$key] = $this->resolveKey($key, $vendor, $this->vendor_transformer);
            }
        }

        return $this->decorateAdvancedFields($vendor, $entity);
    }

    private function decorateAdvancedFields(Vendor $vendor, array $entity) :array
    {
        if (in_array('vendor.country_id', $this->input['report_keys'])) {
            $entity['country'] = $vendor->country ? ctrans("texts.country_{$vendor->country->name}") : '';
        }

        if (in_array('vendor.currency', $this->input['report_keys'])) {
            $entity['currency'] = $vendor->currency() ? $vendor->currency()->code : $vendor->company->currency()->code;
        }

        if (in_array('vendor.classification', $this->input['report_keys']) && isset($vendor->classification)) {
            $entity['vendor.classification'] = ctrans("texts.{$vendor->classification}") ?? '';
        }

        $entity['status'] = $this->calculateStatus($vendor);

        return $entity;
    }

    private function calculateStatus($vendor)
    {
        if ($vendor->is_deleted) {
            return ctrans('texts.deleted');
        }

        if ($vendor->deleted_at) {
            return ctrans('texts.archived');
        }

        return ctrans('texts.active');
    }
}