<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class BaseModel extends Model
{
    use SoftDeletes;

    // 自定义时间戳字段
    const CREATED_AT = 'create_time';
    const UPDATED_AT = 'update_time';
    const DELETED_AT = 'deleted';

    /**
     * 序列化日期为指定格式
     */
    protected function serializeDate(\DateTimeInterface $date): string
    {
        return $date->format('Y-m-d H:i:s');
    }

    /**
     * 查询作用域：未删除
     */
    public function scopeNotDeleted($query)
    {
        return $query->where('deleted', 0);
    }

    /**
     * 查询作用域：当前租户
     */
    public function scopeCurrentTenant($query)
    {
        $tenantId = $this->getCurrentTenantId();
        if ($tenantId !== null) {
            return $query->where('tenant_id', $tenantId);
        }
        return $query;
    }

    /**
     * 查询作用域：启用状态
     */
    public function scopeActive($query)
    {
        return $query->where('status', 1);
    }

    /**
     * 查询作用域：排序
     */
    public function scopeOrdered($query)
    {
        return $query->orderBy('sort', 'asc')->orderBy('id', 'desc');
    }

    /**
     * 查询作用域：安全查询（未删除 + 当前租户）
     */
    public function scopeSafeQuery($query)
    {
        return $query->notDeleted()->currentTenant();
    }

    /**
     * 获取当前租户ID
     */
    protected function getCurrentTenantId(): ?int
    {
        $user = auth('admin')->user();
        return $user ? $user->tenant_id : null;
    }

    /**
     * 设置系统字段（创建时）
     */
    public function setCreateFields(): void
    {
        $userId = auth('admin')->id() ?? 0;
        $tenantId = $this->getCurrentTenantId() ?? 0;

        $this->creator = $userId;
        $this->create_time = now();
        $this->tenant_id = $tenantId;
        $this->deleted = 0;
    }

    /**
     * 设置系统字段（更新时）
     */
    public function setUpdateFields(): void
    {
        $userId = auth('admin')->id() ?? 0;

        $this->updater = $userId;
        $this->update_time = now();
    }

    /**
     * 验证租户权限
     */
    public function validateTenantAccess(): bool
    {
        $currentTenantId = $this->getCurrentTenantId();

        // 如果当前用户没有租户ID，不允许访问
        if ($currentTenantId === null) {
            return false;
        }

        // 如果记录没有租户ID，不允许访问
        if (!isset($this->tenant_id)) {
            return false;
        }

        // 验证租户ID是否匹配
        return $this->tenant_id == $currentTenantId;
    }

    /**
     * 保存前的钩子
     */
    protected static function booted()
    {
        // 创建时自动设置系统字段
        static::creating(function ($model) {
            $model->setCreateFields();
        });

        // 更新时自动设置系统字段
        static::updating(function ($model) {
            $model->setUpdateFields();
        });

        // 全局作用域：自动过滤租户数据
        static::addGlobalScope('tenant', function ($builder) {
            $model = new static;
            $tenantId = $model->getCurrentTenantId();
            if ($tenantId !== null) {
                $builder->where('tenant_id', $tenantId);
            }
        });

        // 全局作用域：自动过滤已删除数据
        static::addGlobalScope('not_deleted', function ($builder) {
            $builder->where('deleted', 0);
        });
    }
}