<?php

namespace App\Models;

use App\Exceptions\ErrorException;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

class CustomFormField extends SoftDeletesModel
{
    public $casts = [
        'validation' => 'json',
        'select_item' => 'json'
    ];

    // 白名单字段，每个表都会有
    public $whiteList = ['id', 'admin_id', 'department_id', 'created_at', 'updated_at', 'deleted_at'];

    public static $validationRules = [
        'required' => '必填',
        'unique' => '唯一',
        'date' => '日期',
        'email' => '邮箱',
        'integer' => '整数',
        'numeric' => '数字',
        'mobile' => '手机号',
        'idcard' => '身份证号',
    ];

    /**
     * 输入字段检测
     * @param $all
     */
    public function checkFields($all)
    {
        $model = new CustomFormField();
        if (isset($all['id'])) {
            // 判断不能重名
            $check = $model->where('custom_form_id', $all['custom_form_id'])->where('field', $all['field'])->where('id', '!=', $all['id'])->first();
            if ($check) throw new ErrorException('字段名重复');
        } else {
            // 判断不能重名
            $check = $model->where('custom_form_id', $all['custom_form_id'])->where('field', $all['field'])->first();
            if ($check) throw new ErrorException('字段名重复');
        }
        return $all;
    }


    /**
     * 获取原始数据表的表结构和数据类型
     */
    public function getRowTableFieldsByType($tableName, $showAll = false, $cache = true)
    {
        if ($cache) {
            return Cache::remember('row_table_fields_by_type_' . $tableName, CustomForm::$cache_ttl, function () use ($tableName, $showAll) {
                return $this->rowTableFieldsByType($tableName, $showAll);
            });
        } else {
            return $this->rowTableFieldsByType($tableName, $showAll);
        }
    }

    /**
     * 获取原始数据表的表结构和备注
     */
    public function getRowTableFieldsByComment($tableName, $except = [], $symbol = '-')
    {
        $columns = DB::select(DB::raw("SHOW FULL COLUMNS FROM {$tableName}"));
        // 转数组
        $columns = json_decode(json_encode($columns), true);
        $array = array_column($columns, 'Comment', 'Field');
        $list = [];
        foreach ($array as $key => $item) {
            // 去掉排除的数据
            if (in_array($key, $except)) {
                continue;
            }
            // 根据分隔符取前面的字段名
            $item = explode($symbol, $item);
            $list[$key] = $item[0];
        }
        return $list;
    }

    /**
     * 获取原始数据表的表结构和数据类型
     */
    public function rowTableFieldsByType($tableName, $showAll = false)
    {
        $rowColumn = Schema::getColumnListing($tableName);
        // 遍历表列信息
        $list = [];
        foreach ($rowColumn as $column) {
            // 获取每个列的类型
            $columnType = Schema::getColumnType($tableName, $column);
            if (!$showAll && in_array($column, $this->whiteList)) {
                continue;
            }
            $list = array_merge($list, [$column => $columnType]);
        }
        return $list;
    }

}