<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Style;

class Fill extends Supervisor
{
	// Fill types
	const FILL_NONE = 'none';
	const FILL_SOLID = 'solid';
	const FILL_GRADIENT_LINEAR = 'linear';
	const FILL_GRADIENT_PATH = 'path';
	const FILL_PATTERN_DARKDOWN = 'darkDown';
	const FILL_PATTERN_DARKGRAY = 'darkGray';
	const FILL_PATTERN_DARKGRID = 'darkGrid';
	const FILL_PATTERN_DARKHORIZONTAL = 'darkHorizontal';
	const FILL_PATTERN_DARKTRELLIS = 'darkTrellis';
	const FILL_PATTERN_DARKUP = 'darkUp';
	const FILL_PATTERN_DARKVERTICAL = 'darkVertical';
	const FILL_PATTERN_GRAY0625 = 'gray0625';
	const FILL_PATTERN_GRAY125 = 'gray125';
	const FILL_PATTERN_LIGHTDOWN = 'lightDown';
	const FILL_PATTERN_LIGHTGRAY = 'lightGray';
	const FILL_PATTERN_LIGHTGRID = 'lightGrid';
	const FILL_PATTERN_LIGHTHORIZONTAL = 'lightHorizontal';
	const FILL_PATTERN_LIGHTTRELLIS = 'lightTrellis';
	const FILL_PATTERN_LIGHTUP = 'lightUp';
	const FILL_PATTERN_LIGHTVERTICAL = 'lightVertical';
	const FILL_PATTERN_MEDIUMGRAY = 'mediumGray';

	public ?int $startcolorIndex = null;

	public ?int $endcolorIndex = null;

	/**
	 * Fill type.
	 */
	protected ?string $fillType = self::FILL_NONE;

	/**
	 * Rotation.
	 */
	protected float $rotation = 0.0;

	/**
	 * Start color.
	 */
	protected Color $startColor;

	/**
	 * End color.
	 */
	protected Color $endColor;

	private bool $colorChanged = false;

	/**
	 * Create a new Fill.
	 *
	 * @param bool $isSupervisor Flag indicating if this is a supervisor or not
	 *                                    Leave this value at default unless you understand exactly what
	 *                                        its ramifications are
	 * @param bool $isConditional Flag indicating if this is a conditional style or not
	 *                                    Leave this value at default unless you understand exactly what
	 *                                        its ramifications are
	 */
	public function __construct(bool $isSupervisor = false, bool $isConditional = false)
	{
		// Supervisor?
		parent::__construct($isSupervisor);

		// Initialise values
		if ($isConditional) {
			$this->fillType = null;
		}
		$this->startColor = new Color(Color::COLOR_WHITE, $isSupervisor, $isConditional);
		$this->endColor = new Color(Color::COLOR_BLACK, $isSupervisor, $isConditional);

		// bind parent if we are a supervisor
		if ($isSupervisor) {
			$this->startColor->bindParent($this, 'startColor');
			$this->endColor->bindParent($this, 'endColor');
		}
	}

	/**
	 * Get the shared style component for the currently active cell in currently active sheet.
	 * Only used for style supervisor.
	 */
	public function getSharedComponent(): self
	{
		/** @var Style $parent */
		$parent = $this->parent;

		return $parent->getSharedComponent()->getFill();
	}

	/**
	 * Build style array from subcomponents.
	 */
	public function getStyleArray(array $array): array
	{
		return ['fill' => $array];
	}

	/**
	 * Apply styles from array.
	 *
	 * <code>
	 * $spreadsheet->getActiveSheet()->getStyle('B2')->getFill()->applyFromArray(
	 *     [
	 *         'fillType' => Fill::FILL_GRADIENT_LINEAR,
	 *         'rotation' => 0.0,
	 *         'startColor' => [
	 *             'rgb' => '000000'
	 *         ],
	 *         'endColor' => [
	 *             'argb' => 'FFFFFFFF'
	 *         ]
	 *     ]
	 * );
	 * </code>
	 *
	 * @param array $styleArray Array containing style information
	 *
	 * @return $this
	 */
	public function applyFromArray(array $styleArray)
	{
		if ($this->isSupervisor) {
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($this->getStyleArray($styleArray));
		} else {
			if (isset($styleArray['fillType'])) {
				$this->setFillType($styleArray['fillType']);
			}
			if (isset($styleArray['rotation'])) {
				$this->setRotation($styleArray['rotation']);
			}
			if (isset($styleArray['startColor'])) {
				$this->getStartColor()->applyFromArray($styleArray['startColor']);
			}
			if (isset($styleArray['endColor'])) {
				$this->getEndColor()->applyFromArray($styleArray['endColor']);
			}
			if (isset($styleArray['color'])) {
				$this->getStartColor()->applyFromArray($styleArray['color']);
				$this->getEndColor()->applyFromArray($styleArray['color']);
			}
		}

		return $this;
	}

	/**
	 * Get Fill Type.
	 */
	public function getFillType(): ?string
	{
		if ($this->isSupervisor) {
			return $this->getSharedComponent()->getFillType();
		}

		return $this->fillType;
	}

	/**
	 * Set Fill Type.
	 *
	 * @param string $fillType Fill type, see self::FILL_*
	 *
	 * @return $this
	 */
	public function setFillType(string $fillType)
	{
		if ($this->isSupervisor) {
			$styleArray = $this->getStyleArray(['fillType' => $fillType]);
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		} else {
			$this->fillType = $fillType;
		}

		return $this;
	}

	/**
	 * Get Rotation.
	 */
	public function getRotation(): float
	{
		if ($this->isSupervisor) {
			return $this->getSharedComponent()->getRotation();
		}

		return $this->rotation;
	}

	/**
	 * Set Rotation.
	 *
	 * @return $this
	 */
	public function setRotation(float $angleInDegrees)
	{
		if ($this->isSupervisor) {
			$styleArray = $this->getStyleArray(['rotation' => $angleInDegrees]);
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		} else {
			$this->rotation = $angleInDegrees;
		}

		return $this;
	}

	/**
	 * Get Start Color.
	 */
	public function getStartColor(): Color
	{
		return $this->startColor;
	}

	/**
	 * Set Start Color.
	 *
	 * @return $this
	 */
	public function setStartColor(Color $color)
	{
		$this->colorChanged = true;
		// make sure parameter is a real color and not a supervisor
		$color = $color->getIsSupervisor() ? $color->getSharedComponent() : $color;

		if ($this->isSupervisor) {
			$styleArray = $this->getStartColor()->getStyleArray(['argb' => $color->getARGB()]);
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		} else {
			$this->startColor = $color;
		}

		return $this;
	}

	/**
	 * Get End Color.
	 */
	public function getEndColor(): Color
	{
		return $this->endColor;
	}

	/**
	 * Set End Color.
	 *
	 * @return $this
	 */
	public function setEndColor(Color $color)
	{
		$this->colorChanged = true;
		// make sure parameter is a real color and not a supervisor
		$color = $color->getIsSupervisor() ? $color->getSharedComponent() : $color;

		if ($this->isSupervisor) {
			$styleArray = $this->getEndColor()->getStyleArray(['argb' => $color->getARGB()]);
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		} else {
			$this->endColor = $color;
		}

		return $this;
	}

	public function getColorsChanged(): bool
	{
		if ($this->isSupervisor) {
			$changed = $this->getSharedComponent()->colorChanged;
		} else {
			$changed = $this->colorChanged;
		}

		return $changed || $this->startColor->getHasChanged() || $this->endColor->getHasChanged();
	}

	/**
	 * Get hash code.
	 *
	 * @return string Hash code
	 */
	public function getHashCode(): string
	{
		if ($this->isSupervisor) {
			return $this->getSharedComponent()->getHashCode();
		}

		// Note that we don't care about colours for fill type NONE, but could have duplicate NONEs with
		//  different hashes if we don't explicitly prevent this
		return md5(
			$this->getFillType()
			. $this->getRotation()
			. ($this->getFillType() !== self::FILL_NONE ? $this->getStartColor()->getHashCode() : '')
			. ($this->getFillType() !== self::FILL_NONE ? $this->getEndColor()->getHashCode() : '')
			. ((string) $this->getColorsChanged())
			. __CLASS__
		);
	}

	protected function exportArray1(): array
	{
		$exportedArray = [];
		$this->exportArray2($exportedArray, 'fillType', $this->getFillType());
		$this->exportArray2($exportedArray, 'rotation', $this->getRotation());
		if ($this->getColorsChanged()) {
			$this->exportArray2($exportedArray, 'endColor', $this->getEndColor());
			$this->exportArray2($exportedArray, 'startColor', $this->getStartColor());
		}

		return $exportedArray;
	}
}