<?php namespace App\Controllers;

use App\Models\mAccounts;

use function PHPUnit\Framework\logicalXor;
use App\Models\mBills;


class FormHandler extends BaseController {

    public function editForm(){
        if ($this->request->is('post')) {
            log_message('debug','Bills::edit: post data: '.json_encode($this->request->getPost()));
            return $this->checkBillForm();
        }
        else 
            return $this->viewBill($data);	
	}

    	/**
	 * Prüft ob Kategorie vorhanden wenn ein Betrag eingegeben wurde, ohne Betrag und ohne Kategorie wird die Zeile ignoriert bzw. gelöscht
	 */
	public function _ruleBookingLineAcc($value, array $data, ?string &$error, string $field){
		log_message('debug',"Bills::_ruleBookingLineAcc Typ von übergegeben Wert".gettype($value));
		$index = explode('.', $field)[1];
		if ($value > 0) return true;

		if ($index == 0)
			$error = "Kategorie fehlt";
		else if ((is_numeric($data['input'][$index]) && (round($data['input'][$index],2) > 0.0))  || (is_numeric($data['output'][$index]) && (round($data['output'][$index]) > 0.0)))
			$error = "Kategorie in Zeile " . $index . " fehlt";
		
		return empty($error);
	}
	
	/**
	 * Prüft ob Teilbetrag vorhanden wenn eine Kategorie ausgewählt wurde, ohne Betrag und ohne Kategorie wird die Zeile ignoriert bzw. gelöscht
	 * auch wird geprüft dass nur Input oder Output einen Wert enthält, soll im Javascript gemacht werden wenn ordentlich läuft
	 */
	public function _ruleBookingLineAmount(string $value, array $data, ?string &$error, string $field){
		log_message('debug',"Bills::_ruleBookingLineAmount Typ von übergegeben Wert ".gettype($value));
		$index = explode('.', $field)[1];
		if ((is_numeric($data['input'][$index]) && (round($data['input'][$index],2) > 0.0))  xor 
				(is_numeric($data['output'][$index]) && (round($data['output'][$index],2) > 0.0)))
				return true;

		if ((is_numeric($data['input'][$index]) && (round($data['input'][$index],2) > 0.0)) && (is_numeric($data['output'][$index]) && (round($data['output'][$index],2) > 0.0)))
			$error = "Systemfehler: Nur Input oder Output darf einen Wert haben";

		else if (($index == 0) && (count($data['input'])==1)) 
			$error = "Betrag fehlt";
		else if (is_numeric($data['account_id'][$index]) && ($data['account_id'][$index] > 0))
			$error = "Betrag in Zeile " . $index+1 . " fehlt";

		return empty($error);
	}

	/**
	 * rechnet nach ob der Virtuelle Gesamtbetrag (berechnet javascript) stimmt
	 */
	public function _ruleCalcAmount(string $value, array $data, ?string &$error, string $field){
        $subamounts = 0.0;
        foreach ($data['input'] as $i => $inp){
            $subamounts = $subamounts + round(floatval($inp),2) - round(floatval($data['output'][$i]),2);
        }
		
		if (round($value,2) == round($subamounts,2))
            return true;
        else
			$error = "Systemfehler: Amount Client ". floatval($value) . " ungleich Server Amount ". floatval($subamounts) ." Kalkulation; Diff = ".floatval($value)-floatval($subamounts);


		return empty($error);
	}

	public function _ruleCalcTotal(string $value, array $data, ?string &$error, string $field){
		log_message('debug',"Bills::_ruleCalcTotal In: ".$data['total_in']."; Out: ".$data['total_out']);

		if ((is_numeric($data['total_in']) && (round($data['total_in'],2) > 0.0)) && (is_numeric($data['total_out']) && (round($data['total_out'],2) > 0.0))) {
			$error = "Systemfehler: Gesamtbetrag darf nur Input oder Output sein";
		// } else if ((!is_numeric($data['total_in'])) && (!is_numeric($data['total_out']))) {
		// 	$error = "Systemfehler: Gesamtbetrag muss angegeben sein";
		} else {
			$total = round(floatval($data['total_in'])-floatval($data['total_out']),2);
			if (($total !== round(floatval($data['amount']),2)) && (round(floatval($data['openamount']),2) == 0.0))
				$error = "Systemfehler: Gesamtbetrag entspricht nicht Teilbeträgen";
		}
		log_message('debug',"Bills::_ruleCalcTotal Ergebnis ".$error);
		return empty($error);
	}

	public function checkBillForm(){
		$rules = [
			'id'=>['required','is_natural'],
			'source_id' => ['label'=>'Konto','rules'=>['required','greater_than[0]'],'errors'=>['greater_than'=>'Konto fehlt']],
			'datum' => 'required',
			'scheduled' => 'required',
			'transfer' => 'required',
			'sid.*' => ['label'=>'BuchungszeileID','rules'=>['required','is_natural']],
			'receiver' => ['label'=>'Empfänger','rules'=>['required','max_length[120]'],'errors'=>['required'=>'Empfänger fehlt']],
			'account_id.*' => [[$this,'_ruleBookingLineAcc']],
			'input.*' => [[$this,'_ruleBookingLineAmount']],
			'comment.*' => ['label'=>'Kommentar','rules'=>['max_length[150]']],
			'output.*' => ['permit_empty','numeric'],
			'amount' => ['required', 'numeric', [$this,'_ruleCalcAmount']],
			'billfile' => ['max_size[billfile,10000]','mime_in[billfile,application/pdf,image/jpg,image/jpeg]'],
			'removeBillFile' => ['max_length[50]'],
			'validate' => ['required'],
			'scheduledNum' =>['required_with[scheduled]','permit_empty','numeric'],
			'scheduledType' =>['required_with[scheduled]','permit_empty','in_list[week,month,year]']
		];
		if ( 1 < count($this->request->getPost('sid')) ) {
			$rules['openamount'] = ['rules'=>['numeric','equals[0.00]'], 'errors'=>['equals'=>'Restbetrag muss 0 sein']];
			$rules['total_in'] = [[$this,'_ruleCalcTotal']];
			$rules['total_out'] = ['required_without[total_in]','permit_empty','numeric'];
		}

		$data = $this->request->getPost();// filter getPost by array_keys($rules) but indexed rules not working
		log_message('debug','Bills::checkBillForm: Form Data: '.json_encode($data));

		if (! $this->validateData($data, $rules)){
			log_message('debug','Bills::checkBillForm: validation failed: '.json_encode($data));
			log_message('debug','Bills::checkBillForm: validation failed: '.json_encode($this->validator->getErrors()));
			$eBooking = new \App\Entities\eBooking($data);
			return $this->viewBill($eBooking, $this->validator->getErrors());
//			return redirect()->back()->withInput()->with('errors', $validation->getErrors());
		}
		else{
			log_message('debug','Bills::checkBillForm: validation success: '.json_encode($this->validator->getValidated()));
			$eBooking = new \App\Entities\eBooking($this->validator->getValidated());	
			if ($data['scheduled'] == "0"){
				$file = $this->request->getFile('billfile');
				if ($file) {
					if (! $file->isValid() && ($file->getError() != UPLOAD_ERR_NO_FILE)) {
						throw new \RuntimeException($file->getErrorString() . '(' . $file->getError() . ')');
					}
					$eBooking->setInvoice($file);	
				}

			}

			$result = $eBooking->saveIt();
			if (true !== $result) // show error of database
				$this->viewBill($eBooking, $result);

			$redirectURL = session('redirect_url') ?? site_url('/');
			unset($_SESSION['redirect_url']);
			return redirect()->to($redirectURL);
		}
	}

	public function viewBill(\App\Entities\eBooking $fdata, $errors = NULL){
		helper('form');
		log_message('debug','Bills::viewBill: fdata: '.json_encode($fdata->toArray()));
		
		$data['booking'] = $fdata->getFormData();

		$data['validation'] = $errors;
		return view('newBill', $data);
	}

	public function viewInvoice(string $filename) {
		$filePath= WRITEPATH . '/uploads/'.auth()->user()->preFixDB;
		$file = new \CodeIgniter\Files\File($filePath."/".$filename);
		log_message('debug',$file->getMimeType());
		if ($file->getMimeType() == 'application/pdf')
			$this->viewPdf($filename);
		else{
			$imginfo = getimagesize($filePath."/".$filename);
			header("Content-type: {$imginfo['mime']}");
			readfile($filePath."/".$filename);
			exit;
		}
//			return view('viewBillImg', ['filename'=>'writable/uploads/'.$filename]);
	}
	
	
	private function viewPdf(string $filename) {
 //       $view = \Config\Services::renderer();
        log_message('debug',$filename);
        $filePath= WRITEPATH . '/uploads/'.auth()->user()->preFixDB;
        header("Cache-Control: maxage=1");
        header("Pragma: public");
        header('Content-type:application/pdf');
        header('Content-disposition: inline; filename="'.$filename.'"');
        header('content-Transfer-Encoding:binary');
        header('Content-Length:' .filesize($filePath."/".$filename));
        if (($pdf =file_get_contents($filePath."/".$filename)) === false)
            print $filePath."/".$filename;
        else
            print $pdf;
        exit;
    }

}