<?php
namespace PhpUnitsOfMeasure\PhysicalQuantity;

use PhpUnitsOfMeasure\AbstractPhysicalQuantity;
use PhpUnitsOfMeasure\HasSIUnitsTrait;
use PhpUnitsOfMeasure\UnitOfMeasure;

class Area extends AbstractPhysicalQuantity
{
    use HasSIUnitsTrait;

    protected static $unitDefinitions;

    protected static function initialize()
    {
        // Meters squared
        $metersquared = UnitOfMeasure::nativeUnitFactory('m^2');
        $metersquared->addAlias('m²');
        $metersquared->addAlias('meter squared');
        $metersquared->addAlias('square meter');
        $metersquared->addAlias('square meters');
        $metersquared->addAlias('meters squared');
        $metersquared->addAlias('metre squared');
        $metersquared->addAlias('metres squared');
        static::addUnit($metersquared);

        static::addMissingSIPrefixedUnits(
            $metersquared,
            1,
            '%pm^2',
            [
                '%pm²',
                '%Pmeter squared',
                'square %Pmeter',
                'square %Pmeters',
                '%Pmeters squared',
                '%Pmetre squared',
                '%Pmetres squared'
            ],
            2 // square power factor
        );

        // Foot squared
        $newUnit = UnitOfMeasure::linearUnitFactory('ft^2', 9.290304e-2);
        $newUnit->addAlias('ft²');
        $newUnit->addAlias('foot squared');
        $newUnit->addAlias('square foot');
        $newUnit->addAlias('square feet');
        $newUnit->addAlias('feet squared');
        static::addUnit($newUnit);

        // Inch squared
        $newUnit = UnitOfMeasure::linearUnitFactory('in^2', 6.4516e-4);
        $newUnit->addAlias('in²');
        $newUnit->addAlias('inch squared');
        $newUnit->addAlias('square inch');
        $newUnit->addAlias('square inches');
        $newUnit->addAlias('inches squared');
        static::addUnit($newUnit);

        // Mile squared
        $newUnit = UnitOfMeasure::linearUnitFactory('mi^2', 2.589988e6);
        $newUnit->addAlias('mi²');
        $newUnit->addAlias('mile squared');
        $newUnit->addAlias('miles squared');
        $newUnit->addAlias('square mile');
        $newUnit->addAlias('square miles');
        static::addUnit($newUnit);

        // Yard squared
        $newUnit = UnitOfMeasure::linearUnitFactory('yd^2', 8.361274e-1);
        $newUnit->addAlias('yd²');
        $newUnit->addAlias('yard squared');
        $newUnit->addAlias('yards squared');
        $newUnit->addAlias('square yard');
        $newUnit->addAlias('square yards');
        static::addUnit($newUnit);

        // Are
        $newUnit = UnitOfMeasure::linearUnitFactory('a', 100);
        $newUnit->addAlias('are');
        $newUnit->addAlias('ares');
        static::addUnit($newUnit);

        // Decare
        $newUnit = UnitOfMeasure::linearUnitFactory('daa', 1000);
        $newUnit->addAlias('decare');
        $newUnit->addAlias('decares');
        static::addUnit($newUnit);

        // Hectare
        $newUnit = UnitOfMeasure::linearUnitFactory('ha', 10000);
        $newUnit->addAlias('hectare');
        $newUnit->addAlias('hectares');
        static::addUnit($newUnit);

        // International Acre
        $newUnit = UnitOfMeasure::linearUnitFactory('ac', 4046.8564224);
        $newUnit->addAlias('acre');
        $newUnit->addAlias('acres');
        static::addUnit($newUnit);
    }
}