<?php

namespace app\adminapi\validate\community;

use app\common\validate\BaseValidate;
use app\common\model\community\CommunityCategory;
use app\common\model\community\CommunityPost;
use app\common\model\community\CommunityTag;
use app\common\model\user\User;
use think\facade\Db;

class CommunityPostValidate extends BaseValidate
{
    protected $rule = [
        'id' => 'require|checkPost',
        'origin_id' => 'max:100|checkOriginId',
        'user_id' => 'require|integer|gt:0|checkUser|checkBody',
        'content' => 'max:16000',
        'images' => 'array|checkImages',
        'post_type' => 'require|in:0,1,2',
        'match_id' => 'require|integer|egt:0|checkMatch',
        'tag_ids' => 'array|checkTags',
        'is_paid' => 'require|in:0,1|checkPayment',
        'price_points' => 'require|integer|egt:0|elt:10000',
        'free_content_len' => 'require|integer|egt:0|elt:501|checkFreeContentLen',
        'paid_count' => 'require|integer|egt:0|elt:4294967296',
        'view_count' => 'require|integer|egt:0|elt:4294967296',
        'like_count' => 'require|integer|egt:0|elt:4294967296',
        'comment_count' => 'require|integer|egt:0|elt:4294967296',
        'share_count' => 'require|integer|egt:0|elt:4294967296',
        'ext' => 'checkExt',
        'status' => 'require|in:0,1,2',
        'is_top' => 'require|in:0,1',
        'is_hot' => 'require|in:0,1',
        'is_recommend' => 'require|in:0,1',
        'sort' => 'require|integer|egt:0|elt:1000000',
        'is_topic' => 'require|in:0,1',
        'category_id' => 'require|integer|egt:0|checkCategory',
        'create_time' => 'require|checkDateTime',
    ];

    protected $message = [
        'id.require' => '帖子id不能为空',
        'status.require' => '状态不能为空',
        'content.max' => '帖子内容不能超过16000个字符',
        'origin_id.max' => '来源标识不能超过100个字符',
        'user_id.require' => '用户ID不能为空',
        'images.array' => '帖子图片格式错误',
        'post_type.in' => '帖子类型错误',
        'match_id.egt' => '赛事ID不能小于0',
        'tag_ids.array' => '帖子标签格式错误',
        'price_points.elt' => '积分价格范围为0~9999',
        'free_content_len.elt' => '免费预览字数不能超过500',
        'create_time.require' => '发布时间不能为空',
    ];

    public function sceneDetail()
    {
        return $this->only(['id']);
    }

    public function sceneDelete()
    {
        return $this->only(['id']);
    }

    public function sceneStatus()
    {
        return $this->only(['id', 'status']);
    }

    public function sceneEdit()
    {
        return $this->only([
            'id', 'origin_id', 'user_id', 'content', 'images', 'post_type', 'category_id',
            'match_id', 'tag_ids', 'is_paid', 'price_points', 'free_content_len',
            'paid_count', 'view_count', 'like_count', 'comment_count', 'share_count',
            'ext', 'is_top', 'is_hot', 'is_recommend', 'is_topic', 'sort', 'status',
            'create_time',
        ]);
    }

    public function sceneTop()
    {
        return $this->only(['id', 'is_top']);
    }

    public function sceneHot()
    {
        return $this->only(['id', 'is_hot']);
    }

    public function sceneRecommend()
    {
        return $this->only(['id', 'is_recommend']);
    }

    public function sceneSort()
    {
        return $this->only(['id', 'sort']);
    }

    public function sceneTopic()
    {
        return $this->only(['id', 'is_topic']);
    }

    public function sceneCategory()
    {
        return $this->only(['id', 'category_id']);
    }

    public function checkPost($value)
    {
        $post = CommunityPost::findOrEmpty($value);
        if ($post->isEmpty()) {
            return '帖子不存在';
        }
        return true;
    }

    public function checkOriginId($value, $rule, $data)
    {
        $originId = trim((string) $value);
        if ($originId === '') {
            return true;
        }
        $exists = Db::name('community_post')
            ->where('origin_id', $originId)
            ->where('id', '<>', (int) ($data['id'] ?? 0))
            ->count();
        return $exists > 0 ? '来源标识已存在' : true;
    }

    public function checkUser($value)
    {
        return User::where('id', $value)->count() > 0 ? true : '用户不存在';
    }

    public function checkBody($value, $rule, $data)
    {
        if (trim((string) ($data['content'] ?? '')) === '' && empty($data['images'])) {
            return '帖子内容和图片不能同时为空';
        }
        return true;
    }

    public function checkImages($value)
    {
        if (count($value) > 18) {
            return '帖子图片最多18张';
        }
        foreach ($value as $image) {
            if (!is_string($image) || trim($image) === '') {
                return '帖子图片地址格式错误';
            }
        }
        return true;
    }

    public function checkMatch($value)
    {
        if ((int) $value === 0) {
            return true;
        }
        return Db::name('match')->where('id', $value)->count() > 0 ? true : '关联赛事不存在';
    }

    public function checkTags($value)
    {
        $tagIds = array_values(array_unique(array_map('intval', $value)));
        if (count($tagIds) > 3) {
            return '帖子标签最多选择3个';
        }
        if (!$tagIds) {
            return true;
        }
        return CommunityTag::whereIn('id', $tagIds)->count() === count($tagIds)
            ? true
            : '帖子标签不存在';
    }

    public function checkPayment($value, $rule, $data)
    {
        if ((int) $value === 1 && (int) ($data['price_points'] ?? 0) <= 0) {
            return '付费帖子必须设置积分价格';
        }
        return true;
    }

    public function checkFreeContentLen($value, $rule, $data)
    {
        if ((int) ($data['is_paid'] ?? 0) === 1 && (int) $value < 20) {
            return '付费帖子免费预览字数不能少于20';
        }
        return true;
    }

    public function checkExt($value)
    {
        if (is_array($value) || trim((string) $value) === '') {
            return true;
        }
        json_decode((string) $value, true);
        return json_last_error() === JSON_ERROR_NONE ? true : '扩展数据必须是有效的JSON';
    }

    public function checkDateTime($value)
    {
        return strtotime((string) $value) !== false ? true : '发布时间格式错误';
    }

    public function checkCategory($value, $rule, $data)
    {
        if ((int) $value === 0) {
            return true;
        }
        $category = CommunityCategory::where('id', $value)->findOrEmpty();
        if ($category->isEmpty()) {
            return '帖子分类不存在';
        }
        if ((int) $category->status !== 1) {
            $currentCategoryId = (int) CommunityPost::where('id', $data['id'] ?? 0)->value('category_id');
            if ($currentCategoryId !== (int) $value) {
                return '帖子分类已禁用';
            }
        }
        return true;
    }
}