<?php

namespace rednaoeasycalculationforms\Managers\QueryManager\Formatter\CSVFormatter\Columns;

use rednaoeasycalculationforms\core\Loader;
use rednaoeasycalculationforms\core\Managers\FormManager\ContainerManager\ContainerDataRetriever;
use rednaoeasycalculationforms\core\Managers\FormManager\Fields\FBFieldBase;
use rednaoeasycalculationforms\core\Utils\ArrayUtils;

abstract class CSVColumn
{
    public $IsNumeric = false;
    public $Width = 200;
    /** @var FBFieldBase */
    public $Parent = null;
    public $Title;
    public $Path;
    /** @var FBFieldBase */
    public $Field;
    /** @var Loader */
    public $Loader;
    public $ValueRetriever = null;
    /**
     * CSVColumnFormatter constructor.
     * @param bool $IsNumeric
     */
    public function __construct($loader, $title, $path, $field)
    {
        $this->Loader = $loader;
        $this->Title = $title;
        $this->Path = $path;

        $this->Field = $field;
    }

    public function SetParent($parent)
    {
        $this->Parent = $parent;
        return $this;
    }

    public function SetWidth($width)
    {
        $this->Width = $width;
        return $this;
    }

    public function SetIsNumerid() {
        $this->IsNumeric = true;
        return $this;
    }

    public function GetHeaders() {
        return [$this->Title];
    }

    public abstract function Format($dataSource);

    public function CanAddMultipleRows() {
        return false;
    }

    public function GetValue($dataSource, $path = null)
    {
        if($this->Parent != null)
        {
            $dataSource = $this->GetChildDataSource($dataSource->data);
            if($dataSource == null)
                return null;
        }

        $currentValue = $dataSource;

        if($this->Field != null)
        {
            if($currentValue->data == null || !\is_array($currentValue->data))
                return null;

            $currentValue = ArrayUtils::Find($currentValue->data, function ($x) {return $x->Id == $this->Field->Options->Id;});
            if($currentValue == null)
                return null;
        }

        if($this->ValueRetriever != null)
        {
            return \call_user_func($this->ValueRetriever, $currentValue);

        }

        if($path == null)
            $path = $this->Path;

        if($path == null)
            return $currentValue;

        foreach($path as $currentPath)
        {
            if(!isset($currentValue->$currentPath))
                if(is_array($currentValue) && isset($currentValue[$currentPath])) {
                    $currentValue = $currentValue[$currentPath];
                    continue;
                }
                else
                    return null;
            $currentValue = $currentValue->$currentPath;
        }

        return $currentValue;
    }

    public function GetValueString($dataSource, $path = null, $defaultValue = '')
    {
        $value = $this->GetValue($dataSource, $path);
        if($value == null)
            return $defaultValue;
        return \strval($value);
    }

    private function GetChildDataSource($dataSource)
    {
        $currentParent = $this->Parent;
        $dataSourceIds = [$currentParent->GetId()];

        while($currentParent->GetForm() != null && \method_exists($currentParent->GetForm(), 'GetId'))
        {
            $currentParent = $currentParent->GetForm();
            if($currentParent->GetForm() != null)
                $dataSourceIds[] = $currentParent->GetId();
        }

        foreach($dataSourceIds as $currentId)
        {
            $dataSource = ArrayUtils::Find($dataSource, function ($item) use ($currentId) {return $item->Id == $currentId;});
            if($dataSource == null)
                return null;
            $dataSource = $dataSource->Value;

        }

        return (object) array('data' => $dataSource);
    }

    public function GetNumericValue($dataSource, $path = null, $defaultValue = 0)
    {
        $value = $this->GetValue($dataSource, $path);
        if($value == null)
            return $defaultValue;

        if(!\is_numeric($value))
            return $defaultValue;

        $value = \floatval($value);

        return $value;

    }

    public function SetValueRetriever($retriever)
    {
        $this->ValueRetriever = $retriever;
    }

}