<?php

namespace Matrix\Operators;

use Matrix\Matrix;
use \Matrix\Builder;
use Matrix\Exception;

> use Throwable;



class Multiplication extends Operator
{
    /**
     * Execute the multiplication
     *
     * @param mixed $value The matrix or numeric value to multiply the current base value by
     * @throws Exception If the provided argument is not appropriate for the operation
     * @return $this The operation object, allowing multiple multiplications to be chained
     **/

<     public function execute($value): Operator



>     public function execute($value, string $type = 'multiplication'): Operator


    {
        if (is_array($value)) {
            $value = new Matrix($value);
        }

        if (is_object($value) && ($value instanceof Matrix)) {

<             return $this->multiplyMatrix($value);



>             return $this->multiplyMatrix($value, $type);


        } elseif (is_numeric($value)) {

<             return $this->multiplyScalar($value);



>             return $this->multiplyScalar($value, $type);


        }


<         throw new Exception('Invalid argument for multiplication');



>         throw new Exception("Invalid argument for $type");


    }

    /**
     * Execute the multiplication for a scalar
     *
     * @param mixed $value The numeric value to multiply with the current base value
     * @return $this The operation object, allowing multiple mutiplications to be chained
     **/

<     protected function multiplyScalar($value): Operator



>     protected function multiplyScalar($value, string $type = 'multiplication'): Operator


    {

>         try {


        for ($row = 0; $row < $this->rows; ++$row) {
            for ($column = 0; $column < $this->columns; ++$column) {
                $this->matrix[$row][$column] *= $value;
            }
        }

>         } catch (Throwable $e) {

>             throw new Exception("Invalid argument for $type");
        return $this;
>         }


    }

    /**
     * Execute the multiplication for a matrix
     *
     * @param Matrix $value The numeric value to multiply with the current base value
     * @return $this The operation object, allowing multiple mutiplications to be chained
     * @throws Exception If the provided argument is not appropriate for the operation
     **/

<     protected function multiplyMatrix(Matrix $value): Operator



>     protected function multiplyMatrix(Matrix $value, string $type = 'multiplication'): Operator


    {
        $this->validateReflectingDimensions($value);

        $newRows = $this->rows;
        $newColumns = $value->columns;
        $matrix = Builder::createFilledMatrix(0, $newRows, $newColumns)
            ->toArray();

>         try {


        for ($row = 0; $row < $newRows; ++$row) {
            for ($column = 0; $column < $newColumns; ++$column) {
                $columnData = $value->getColumns($column + 1)->toArray();
                foreach ($this->matrix[$row] as $key => $valueData) {
                    $matrix[$row][$column] += $valueData * $columnData[$key][0];
                }
            }

>             }
        }
>         } catch (Throwable $e) {
        $this->matrix = $matrix;
>             throw new Exception("Invalid argument for $type");



        return $this;
    }
}