<?php

namespace TablePress\PhpOffice\PhpSpreadsheet;

use TablePress\PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
use TablePress\PhpOffice\PhpSpreadsheet\Helper\Size;
use TablePress\PhpOffice\PhpSpreadsheet\RichText\RichText;
use TablePress\PhpOffice\PhpSpreadsheet\Shared\Drawing as SharedDrawing;
use TablePress\PhpOffice\PhpSpreadsheet\Style\Alignment;
use TablePress\PhpOffice\PhpSpreadsheet\Style\Color;
use TablePress\PhpOffice\PhpSpreadsheet\Worksheet\Drawing;
use Stringable;

class Comment implements IComparable
{
	/**
	 * Author.
	 */
	private string $author;

	/**
	 * Rich text comment.
	 */
	private RichText $text;

	/**
	 * Comment width (CSS style, i.e. XXpx or YYpt).
	 */
	private string $width = '96pt';

	/**
	 * Left margin (CSS style, i.e. XXpx or YYpt).
	 */
	private string $marginLeft = '59.25pt';

	/**
	 * Top margin (CSS style, i.e. XXpx or YYpt).
	 */
	private string $marginTop = '1.5pt';

	/**
	 * Visible.
	 */
	private bool $visible = false;

	/**
	 * Comment height (CSS style, i.e. XXpx or YYpt).
	 */
	private string $height = '55.5pt';

	/**
	 * Comment fill color.
	 */
	private Color $fillColor;

	/**
	 * Alignment.
	 */
	private string $alignment;

	/**
	 * Background image in comment.
	 */
	private Drawing $backgroundImage;

	public const TEXTBOX_DIRECTION_RTL = 'rtl';
	public const TEXTBOX_DIRECTION_LTR = 'ltr';
	// MS uses 'auto' in xml but 'context' in UI
	public const TEXTBOX_DIRECTION_AUTO = 'auto';
	public const TEXTBOX_DIRECTION_CONTEXT = 'auto';

	private string $textboxDirection = '';

	/**
	 * Create a new Comment.
	 */
	public function __construct()
	{
		// Initialise variables
		$this->author = 'Author';
		$this->text = new RichText();
		$this->fillColor = new Color('FFFFFFE1');
		$this->alignment = Alignment::HORIZONTAL_GENERAL;
		$this->backgroundImage = new Drawing();
	}

	/**
	 * Get Author.
	 */
	public function getAuthor(): string
	{
		return $this->author;
	}

	/**
	 * Set Author.
	 */
	public function setAuthor(string $author): self
	{
		$this->author = $author;

		return $this;
	}

	/**
	 * Get Rich text comment.
	 */
	public function getText(): RichText
	{
		return $this->text;
	}

	/**
	 * Set Rich text comment.
	 */
	public function setText(RichText $text): self
	{
		$this->text = $text;

		return $this;
	}

	/**
	 * Get comment width (CSS style, i.e. XXpx or YYpt).
	 */
	public function getWidth(): string
	{
		return $this->width;
	}

	/**
	 * Set comment width (CSS style, i.e. XXpx or YYpt). Default unit is pt.
	 */
	public function setWidth(string $width): self
	{
		$width = new Size($width);
		if ($width->valid()) {
			$this->width = (string) $width;
		}

		return $this;
	}

	/**
	 * Get comment height (CSS style, i.e. XXpx or YYpt).
	 */
	public function getHeight(): string
	{
		return $this->height;
	}

	/**
	 * Set comment height (CSS style, i.e. XXpx or YYpt). Default unit is pt.
	 */
	public function setHeight(string $height): self
	{
		$height = new Size($height);
		if ($height->valid()) {
			$this->height = (string) $height;
		}

		return $this;
	}

	/**
	 * Get left margin (CSS style, i.e. XXpx or YYpt).
	 */
	public function getMarginLeft(): string
	{
		return $this->marginLeft;
	}

	/**
	 * Set left margin (CSS style, i.e. XXpx or YYpt). Default unit is pt.
	 */
	public function setMarginLeft(string $margin): self
	{
		$margin = new Size($margin);
		if ($margin->valid()) {
			$this->marginLeft = (string) $margin;
		}

		return $this;
	}

	/**
	 * Get top margin (CSS style, i.e. XXpx or YYpt).
	 */
	public function getMarginTop(): string
	{
		return $this->marginTop;
	}

	/**
	 * Set top margin (CSS style, i.e. XXpx or YYpt). Default unit is pt.
	 */
	public function setMarginTop(string $margin): self
	{
		$margin = new Size($margin);
		if ($margin->valid()) {
			$this->marginTop = (string) $margin;
		}

		return $this;
	}

	/**
	 * Is the comment visible by default?
	 */
	public function getVisible(): bool
	{
		return $this->visible;
	}

	/**
	 * Set comment default visibility.
	 */
	public function setVisible(bool $visibility): self
	{
		$this->visible = $visibility;

		return $this;
	}

	/**
	 * Set fill color.
	 */
	public function setFillColor(Color $color): self
	{
		$this->fillColor = $color;

		return $this;
	}

	/**
	 * Get fill color.
	 */
	public function getFillColor(): Color
	{
		return $this->fillColor;
	}

	public function setAlignment(string $alignment): self
	{
		$this->alignment = $alignment;

		return $this;
	}

	public function getAlignment(): string
	{
		return $this->alignment;
	}

	public function setTextboxDirection(string $textboxDirection): self
	{
		$this->textboxDirection = $textboxDirection;

		return $this;
	}

	public function getTextboxDirection(): string
	{
		return $this->textboxDirection;
	}

	/**
	 * Get hash code.
	 */
	public function getHashCode(): string
	{
		return md5(
			$this->author
			. $this->text->getHashCode()
			. $this->width
			. $this->height
			. $this->marginLeft
			. $this->marginTop
			. ($this->visible ? 1 : 0)
			. $this->fillColor->getHashCode()
			. $this->alignment
			. $this->textboxDirection
			. ($this->hasBackgroundImage() ? $this->backgroundImage->getHashCode() : '')
			. __CLASS__
		);
	}

	/**
	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
	 */
	public function __clone()
	{
		$vars = get_object_vars($this);
		foreach ($vars as $key => $value) {
			if (is_object($value)) {
				$this->$key = clone $value;
			} else {
				$this->$key = $value;
			}
		}
	}

	/**
	 * Convert to string.
	 */
	public function __toString(): string
	{
		return $this->text->getPlainText();
	}

	/**
	 * Check is background image exists.
	 */
	public function hasBackgroundImage(): bool
	{
		$path = $this->backgroundImage->getPath();

		if (empty($path)) {
			return false;
		}

		return getimagesize($path) !== false;
	}

	/**
	 * Returns background image.
	 */
	public function getBackgroundImage(): Drawing
	{
		return $this->backgroundImage;
	}

	/**
	 * Sets background image.
	 */
	public function setBackgroundImage(Drawing $objDrawing): self
	{
		if (!array_key_exists($objDrawing->getType(), Drawing::IMAGE_TYPES_CONVERTION_MAP)) {
			throw new PhpSpreadsheetException('Unsupported image type in comment background. Supported types: PNG, JPEG, BMP, GIF.');
		}
		$this->backgroundImage = $objDrawing;

		return $this;
	}

	/**
	 * Sets size of comment as size of background image.
	 */
	public function setSizeAsBackgroundImage(): self
	{
		if ($this->hasBackgroundImage()) {
			$this->setWidth(SharedDrawing::pixelsToPoints($this->backgroundImage->getWidth()) . 'pt');
			$this->setHeight(SharedDrawing::pixelsToPoints($this->backgroundImage->getHeight()) . 'pt');
		}

		return $this;
	}
}