<?php

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the GNU Affero General Public License v3.0.
// See the LICENCE file in the repository root for full licence text.

namespace App\Libraries;

use App\Models\Comment;
use App\Models\User;
use App\Models\UserProfileCustomization;

class CommentBundleParams
{
    const DEFAULT_PAGE = 1;
    const DEFAULT_LIMIT = 50;

    public ?int $after = null;
    public $userId;
    public $commentableId;
    public $commentableType;
    public $parentId;
    public $cursor;
    public $cursorRaw;
    public $cursorHelper;
    public $limit;
    public $page;
    public $sort;

    /**
     * @param array $params The params from request().
     * @param User|null $user The user viewing the comments.
     */
    public function __construct(array $params, ?User $user)
    {
        $this->userId = null;
        $this->parentId = null;
        $this->cursor = null;
        $this->limit = static::DEFAULT_LIMIT;
        $this->page = static::DEFAULT_PAGE;
        $this->sort = UserProfileCustomization::forUser($user)['comments_sort'];

        $this->setAll($params);
    }

    public function setAll($params)
    {
        if (array_key_exists('user_id', $params)) {
            $this->userId = get_int($params['user_id']);
        }

        if (array_key_exists('parent_id', $params)) {
            $this->parentId = get_int($params['parent_id']);
        }

        if (array_key_exists('limit', $params)) {
            $this->limit = \Number::clamp(get_int($params['limit']) ?? 50, 1, 100);
        }

        if (array_key_exists('page', $params)) {
            $this->page = max(get_int($params['page']), 1);
        }

        $this->commentableId = $params['commentable_id'] ?? null;
        $this->commentableType = $params['commentable_type'] ?? null;

        $this->cursorHelper = Comment::makeDbCursorHelper($params['sort'] ?? $this->sort);
        $this->cursor = get_arr($params['cursor'] ?? null);
        $this->sort = $this->cursorHelper->getSortName();
        $this->after = get_int($params['after'] ?? null);
    }

    public function filterByParentId()
    {
        return $this->parentId !== null;
    }

    public function forUrl()
    {
        $params = [
            'commentable_id' => $this->commentableId,
            'commentable_type' => $this->commentableType,
            'cursor' => $this->cursor,
        ];

        if ($this->userId !== null) {
            $params['user_id'] = $this->userId;
        }

        if ($this->parentId !== null) {
            $params['parent_id'] = $this->parentId;
        }

        if ($this->page !== static::DEFAULT_PAGE) {
            $params['page'] = $this->page;
        }

        if ($this->limit !== static::DEFAULT_LIMIT) {
            $params['limit'] = $this->limit;
        }

        if ($this->sort !== Comment::DEFAULT_SORT) {
            $params['sort'] = $this->sort;
        }

        return $params;
    }

    public function parentIdForWhere()
    {
        return $this->parentId === 0 ? null : $this->parentId;
    }
}