<?php

namespace App\Models\Labels;

use App\Models\Asset;
use App\Models\User;

class FieldOption
{
    protected string $label;

    public function getLabel()
    {
        return $this->label;
    }

    protected string $dataSource;

    public function getDataSource()
    {
        return $this->dataSource;
    }

    public function getValue(Asset $asset)
    {
        $dataPath = collect(explode('.', $this->dataSource));

        // assignedTo directly on the asset is a special case where
        // we want to avoid returning the property directly
        // and instead return the entity's presented name.
        if (in_array($dataPath[0], ['assignedTo', 'displayName'])) {
            $assigned = $asset->relationLoaded('assignedTo') ? $asset->assigned : $asset->assignedTo;

            if (!$assigned) {
                return null;
            }
            if ($dataPath[0] === 'displayName') {
                return $assigned->getRawOriginal('display_name') ?? $assigned->display_name;
            }
            if ($assigned instanceof User) {
                return $assigned->full_name;
            }
            return $assigned->name ?? $assigned->display_name ?? null;
        }

        // Handle Laravel's stupid Carbon datetime casting
        if ($dataPath[0] === 'purchase_date') {
            return $asset->purchase_date ? $asset->purchase_date->format('Y-m-d') : null;
        }

        return $dataPath->reduce(
            function ($myValue, $path) {
                try {
                    return $myValue ? $myValue->{$path} : ${$myValue};
                } catch (\Exception $e) {
                    return $myValue;
                }
            }, $asset
        );
    }

    public function toArray(?Asset $asset = null)
    {
        return FieldOption::makeArray($this, $asset);
    }

    public function toString()
    {
        return FieldOption::makeString($this);
    }

    /* Statics */

    public static function makeArray(FieldOption $option, ?Asset $asset = null)
    {
        return [
            'label' => $option->getLabel(),
            'dataSource' => $option->getDataSource(),
            'value' => $asset ? $option->getValue($asset) : null,
        ];
    }

    public static function makeString(FieldOption $option)
    {
        return $option->getLabel().'='.$option->getDataSource();
    }

    public static function fromString(string $theString)
    {
        $parts = explode('=', $theString);
        if (count($parts) == 2) {
            $option = new FieldOption;
            $option->label = $parts[0];
            $option->dataSource = $parts[1];

            return $option;
        }
    }
}