<?php
namespace Misuzu\Comments;

use stdClass;
use Misuzu\Users\User;
use Misuzu\Users\UserNotFoundException;

class CommentsEx {
    private Comments $comments;
    private array $userInfos;

    public function __construct(Comments $comments, array $userInfos = []) {
        $this->comments = $comments;
        $this->userInfos = $userInfos;
    }

    public function getCommentsForLayout(CommentsCategoryInfo|string $category): object {
        $info = new stdClass;
        if(is_string($category))
            $category = $this->comments->ensureCategory($category);

        $info->user = User::getCurrent();
        $info->category = $category;
        $info->posts = [];

        $root = $this->comments->getPosts($category, includeRepliesCount: true, includeVotesCount: true, includeDeleted: true);
        foreach($root as $postInfo)
            $info->posts[] = $this->decorateComment($postInfo);

        return $info;
    }

    public function decorateComment(CommentsPostInfo $postInfo): object {
        if($postInfo->hasUserId()) {
            $userId = $postInfo->getUserId();
            if(array_key_exists($userId, $this->userInfos)) {
                $userInfo = $this->userInfos[$userId];
            } else {
                try {
                    $userInfo = User::byId($userId);
                } catch(UserNotFoundException $ex) {
                    $userInfo = null;
                }

                $this->userInfos[$userId] = $userInfo;
            }
        } else $userInfo = null;

        $info = new stdClass;
        $info->post = $postInfo;
        $info->user = $userInfo;
        $info->vote = $this->comments->getPostVote($postInfo, $userInfo);
        $info->replies = [];

        $root = $this->comments->getPosts(parent: $postInfo, includeRepliesCount: true, includeVotesCount: true, includeDeleted: true);
        foreach($root as $childInfo)
            $info->replies[] = $this->decorateComment($childInfo);

        return $info;
    }
}