<?php

namespace Automattic\P2\Themes\P2020;

class CommentActions {
	private const SEPARATOR = 'separator';

	public function __construct() {
		// Override Comment Actions to use custom html (ellipsis menu).
		add_filter( 'o2_comment_fragment', array( $this, 'comment_fragment' ), 11, 2 );
		add_filter( 'o2_comment_actions', array( $this, 'add_comment_link_action' ), 11, 3 );
	}

	public function comment_fragment( $fragment, $comment_id ) {

		$comment                            = get_comment( $comment_id );
		$comment_depth                      = $fragment['depth'];
		$fragment['commentDropdownActions'] = $this->get_comment_actions( 'dropdown', $comment, $comment_depth );
		$fragment['commentTrashedActions']  = $this->get_comment_actions( 'trashed_dropdown', $comment, $comment_depth );

		return $fragment;
	}

	public function get_comment_actions( $location, $comment, $comment_depth ) {
		// Accepted answer 'comments' do not have proper IDs.
		if ( ! $comment || ! is_numeric( $comment->comment_ID ) ) {
			return '';
		}

		$actions = array();
		$actions = apply_filters( 'o2_comment_actions', $actions, $location, $comment, $comment_depth );
		$actions = (array) $actions;

		if ( 0 === count( $actions ) ) {
			return '';
		}

		// no actions on xcomments please
		$xcomment_original_permalink = get_comment_meta( $comment->comment_ID, 'xcomment_original_permalink', true );
		if ( ! empty( $xcomment_original_permalink ) ) {
			return '';
		}

		$comments_menu          = new EllipsisMenu();
		$comments_menu->label   = esc_html__( 'Comment Actions', 'p2020' );
		$comments_menu->classes = 'o2-dropdown-actions o2-comment-actions o2-comment-dropdown-actions';

		$actions = $this->prepare_plugin_actions( $actions );
		$actions = $this->sort_group_actions( $actions );

		foreach ( $actions as $action ) {
			if ( self::SEPARATOR === $action ) {
				$comments_menu->add_separator();
			} elseif ( is_string( $action ) ) {
				$comments_menu->add_item_html( $action );
			} else {
				$comments_menu->add_item( $action['label'], $action['url'], $action['icon'], $action['attributes'] ?? [] );
			}
		}

		return $comments_menu->generate();
	}

	// As some plugins do not provide their actions in expected format, and we still want
	// to correctly order, let's change action html.
	// Alternative would be to update known plugins
	private function prepare_plugin_actions( &$actions ) {
		$result = [];

		foreach ( $actions as $key => $action ) {
			$new_key = $key;

			// strip existing groups
			$action = str_replace( 'o2-actions-border-top', '', $action );

			// give keys to known actions
			if ( is_int( $key ) ) {
				if ( str_contains( $action, 'o2-comment-top' ) ) {
					unset( $actions[ $key ] );
					$new_key = 'o2-comment-top';
				}

				if ( str_contains( $action, 'o2-short-link' ) ) {
					unset( $actions[ $key ] );
					$new_key = 'o2-short-link';
				}
			}

			$result[ $new_key ] = $action;
		}

		return $result;
	}

	private function sort_group_actions( $actions ) {
		$expected_order = [
			'o2-comment-edit',
			'o2-comment-top',
			self::SEPARATOR,
			'comment-like',
			'o2-comment-reply',
			'o2-login-to-reply',
			'o2-permalink',
			'a8c-public-shorthand',
			'o2-short-link',
			self::SEPARATOR,
			'o2-comment-trash',
			'o2-comment-untrash',
		];

		$result             = [];
		$render_group_start = false;

		// fill $result array with enabled actions in $expected_order, and also add separators
		foreach ( $expected_order as $key ) {
			if ( self::SEPARATOR === $key ) {
				$render_group_start = true;
			}

			if ( empty( $actions[ $key ] ) ) {
				continue;
			}

			$action = $actions[ $key ];

			if ( $action ) {
				if ( $render_group_start ) {
					$render_group_start = false;
					$result[]           = self::SEPARATOR;
				}

				$result[] = $action;
			}
		}

		return $result;
	}

	/**
	 * Add comment link action to the list of comment actions
	 */
	public static function add_comment_link_action( $actions, $location, $comment ) {
		if ( 'dropdown' === $location ) {
			$link = get_comment_link( $comment );

			if ( ! $link ) {
				return $actions;
			}

			$actions['o2-permalink'] = '<a href="' . esc_url( $link ) .
				'" class="o2-permalink" data-action="permalink" data-actionstate="default">' .
				__( 'Copy link', 'p2020' ) .
				'</a>';
		}

		return $actions;
	}
}

new CommentActions();