<?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\Company;
use App\Models\Credit;
use App\Transformers\CreditTransformer;
use App\Utils\Ninja;
use App\Utils\Number;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\App;
use League\Csv\Writer;

class CreditExport extends BaseExport
{

    private CreditTransformer $credit_transformer;

    public string $date_key = 'created_at';

    public Writer $csv;

    public function __construct(Company $company, array $input)
    {
        $this->company = $company;
        $this->input = $input;
        $this->credit_transformer = new CreditTransformer();
    }

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

        $headerdisplay = $this->buildHeader();

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

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

    public function processMetaData(array $row, $resource): array
    {
        $clean_row = [];
        foreach (array_values($this->input['report_keys']) as $key => $value) {
        
            $report_keys = explode(".", $value);
            
            $column_key = $value;
            $clean_row[$key]['entity'] = $report_keys[0];
            $clean_row[$key]['id'] = $report_keys[1] ?? $report_keys[0];
            $clean_row[$key]['hashed_id'] = $report_keys[0] == 'credit' ? null : $resource->{$report_keys[0]}->hashed_id ?? null;
            $clean_row[$key]['value'] = $row[$column_key];
            $clean_row[$key]['identifier'] = $value;

            if(in_array($clean_row[$key]['id'], ['paid_to_date','total_taxes','amount', 'balance', 'partial', 'refunded', 'applied','unit_cost','cost','price'])) {
                $clean_row[$key]['display_value'] = Number::formatMoney($row[$column_key], $resource->client);
            } else {
                $clean_row[$key]['display_value'] = $row[$column_key];
            }

        }

        return $clean_row;
    }

    private 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));

        if (count($this->input['report_keys']) == 0) {
            $this->input['report_keys'] = array_values($this->credit_report_keys);
        }

        $this->input['report_keys'] = array_merge($this->input['report_keys'], array_diff($this->forced_client_fields, $this->input['report_keys']));

        $query = Credit::query()
                        ->withTrashed()
                        ->with('client')
                        ->where('company_id', $this->company->id)
                        ->where('is_deleted', 0);

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

        return $query;
    }

    public function run(): string
    {
        $query = $this->init();
        //load the CSV document from a string
        $this->csv = Writer::createFromString();

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

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

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

    private function buildRow(Credit $credit) :array
    {
        $transformed_credit = $this->credit_transformer->transform($credit);

        $entity = [];

        foreach (array_values($this->input['report_keys']) as $key) {
            
            $keyval = $key;
            $credit_key = str_replace("credit.", "", $key);
            $searched_credit_key = array_search(str_replace("credit.", "", $key), $this->credit_report_keys) ?? $key;
                
            if (isset($transformed_credit[$credit_key])) {
                $entity[$keyval] = $transformed_credit[$credit_key];
            } elseif (isset($transformed_credit[$keyval])) {
                $entity[$keyval] = $transformed_credit[$keyval];
            } elseif(isset($transformed_credit[$searched_credit_key])) {
                $entity[$keyval] = $transformed_credit[$searched_credit_key];
            } else {
                $entity[$keyval] = $this->resolveKey($keyval, $credit, $this->credit_transformer);
            }

        }

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

    private function decorateAdvancedFields(Credit $credit, array $entity) :array
    {
        if (in_array('country_id', $this->input['report_keys'])) {
            $entity['country'] = $credit->client->country ? ctrans("texts.country_{$credit->client->country->name}") : '';
        }
        
        if (in_array('currency_id', $this->input['report_keys'])) {
            $entity['currency_id'] = $credit->client->currency() ? $credit->client->currency()->code : $credit->company->currency()->code;
        }

        if (in_array('invoice_id', $this->input['report_keys'])) {
            $entity['invoice'] = $credit->invoice ? $credit->invoice->number : '';
        }

        if (in_array('client_id', $this->input['report_keys'])) {
            $entity['client'] = $credit->client->present()->name();
        }

        if (in_array('status_id', $this->input['report_keys'])) {
            $entity['status'] = $credit->stringStatus($credit->status_id);
        }

        if(in_array('credit.status', $this->input['report_keys'])) {
            $entity['credit.status'] = $credit->stringStatus($credit->status_id);
        }

        return $entity;
    }
}