<?php
/**
 *
 * Baseics.php
 * User: ChenLong
 * DateTime: 2020/3/9 12:37
 */


namespace sdModule\makeAdminBasics;


use app\common\ResponseJson;
use sdModule\makeAdminBasics\htmlUnit\FormCheckbox;
use sdModule\makeAdminBasics\htmlUnit\FormDate;
use sdModule\makeAdminBasics\htmlUnit\FormEditor;
use sdModule\makeAdminBasics\htmlUnit\FormImage;
use sdModule\makeAdminBasics\htmlUnit\FormMonth;
use sdModule\makeAdminBasics\htmlUnit\FormRadio;
use sdModule\makeAdminBasics\htmlUnit\FormRange;
use sdModule\makeAdminBasics\htmlUnit\FormSelect;
use sdModule\makeAdminBasics\htmlUnit\FormText;
use sdModule\makeAdminBasics\htmlUnit\FormTextarea;
use sdModule\makeAdminBasics\htmlUnit\FormTime;
use sdModule\makeAdminBasics\htmlUnit\Js;
use sdModule\makeAdminBasics\htmlUnit\JsFacade;

class Basics
{
    /**
     * 缩进之前换行
     */
    const BEFORE = 1;
    /**
     * 缩进之后换行
     */
    const AFTER = 2;

    /**
     * 缩进
     */
    const INDENT = '    ';

    /**
     * @return string|\think\response\Json
     * @throws \ReflectionException
     */
    public static function auxCall()
    {
        $make = new self();

        if (isset($_GET['table_name'])) {
            $tableFieldInfo = $make->getFieldInfo($_GET['table_name']);
            return ResponseJson::mixin($tableFieldInfo ?: '请确认表名，没有查到该表信息');
        }elseif (isset($_GET['table'])) {
            return ResponseJson::success();
        }

        if (!empty($_POST)) {
            return ResponseJson::mixin((new Make($_POST))->make());
        }

        return $make->loadFromForm();
    }


    /**
     * 加载辅助页面
     * @return string
     */
    public function loadFromForm()
    {
        $layuiDir = ConfigHelper::get('layui_dir');
        $tableUrl = ConfigHelper::get('get_table_info_url');
        $submitUrl = ConfigHelper::get('submit_url');
        $makeItem = ConfigHelper::get('make_class');

        $formModule = [];
        foreach ( ConfigHelper::get('form_module') as $key => $value){
            $formModule[] = [
                'value' => $key,
                'text'  => $value[1]
            ];
        }

         include __DIR__ . '/src/formHtml.php';
         return '';
    }

    /**
     * 获取字段详情信息
     * @param string $table 表名
     * @param bool   $isPrefix  是否包含表前缀
     * @return mixed
     */
    public function getFieldInfo(string $table, bool $isPrefix = false)
    {
        $table_info = $this->getTableInfo($table, $isPrefix);
        $d = array_map(function ($value) {
            $value = $this->formDefault($value);
            $value = $this->joinTable($value);
            $value = $this->labelHandle($value);
            $value = $this->showTypeHandle($value);
            return $value;
        }, $table_info);
        return $d;
    }

    /**
     * 获取表信息
     * @param string $table
     * @param bool   $isPrefix
     * @return mixed
     */
    public function getTableInfo(string $table, bool $isPrefix = false)
    {
        $isPrefix or $table = ConfigHelper::get('database_prefix') . $table;
        $sql = "select 
            `COLUMN_NAME` column_name,
             DATA_TYPE column_type,
             COLUMN_COMMENT column_comment,CHARACTER_MAXIMUM_LENGTH,column_default column_default
             from 
             information_schema.columns 
             where 
             table_schema = :table_schema 
             AND 
             `table_name` = :table_names";

        return $this->sqlExecute($sql, [
            'table_names' => $table,
            'table_schema' => ConfigHelper::get('database_name')
        ]);
    }

    /**
     * 执行 sql
     * @param string $sql
     * @param array  $param
     * @return mixed
     */
    private function sqlExecute(string $sql, array $param)
    {
        return ConfigHelper::get('database_connect')::query($sql, $param);
    }

    /**
     * 处理表格展示的类型
     * @param $value
     * @return mixed
     */
    protected function showTypeHandle($value)
    {
        if (in_array($value['form_type'], ['images', 'editor', 'textarea', 'password'])) {
            $value['show_type'] = '';
        }elseif($value['form_type'] == 'image'){
            $value['show_type'] = 'image';
        }else{
            $value['show_type'] = 'text';
        }
        return $value;
    }

    /**
     * label 和选择值处理
     * @param $value
     * @return mixed
     */
    protected function labelHandle($value)
    {
        $comment = strtr($value['column_comment'], ['：' => ':', '，' => ',']);
        $join = [];
        if (strpos($comment, ':') !== false) {
            $value['column_comment'] = substr($comment, 0, strpos($comment, ':'));
            $v = substr($comment, strpos($comment, ':') + 1);
            $arr = explode(',', $v);

            foreach ($arr as $item) {
                if (strpos($item, '=') !== false) {
                    $join[] = $item;
                } else {
                    $join[] = substr($item, 0, 1) . '=' .substr($item, 1);
                }
            }
        }

        $join and $value['join'] = $join;

        return $value;
    }


    /**
     * 默认表单类型
     * @param $value
     * @return mixed
     */
    public function formDefault($value)
    {
        $default = [
            'char' => 'text',
            'varchar' => 'text',
            'datetime' => 'datetime',
            'date' => 'date',
            'text' => 'editor',
            'int' => 'text',
            'tinyint' => 'select',
            'string' => 'text'
        ];

        $except = ['id', 'delete_time', 'create_time', 'update_time'];

        if (in_array($value['column_name'] ,$except)){
            $value['form_type'] = '';
            return $value;
        }

        switch (true) {
            case strpos($value['column_name'],  'images') !== false:
                $value['form_type'] = 'images';
                break;

            case strpos($value['column_name'], 'password') !==  false:
                $value['form_type'] = 'password';
                break;

            case strpos($value['column_name'], 'image') !== false
                || strpos($value['column_name'], 'img') !== false
                || strpos($value['column_name'], 'avatar') !== false
                || strpos($value['column_name'], 'cover') !== false :
                $value['form_type'] = 'image';
                break;

            case ($value['column_type'] == 'char' || $value['column_type'] == 'varchar')
                && $value['CHARACTER_MAXIMUM_LENGTH'] > 255:
                $value['form_type'] = 'textarea';
                break;

            case $value['column_type'] == 'tinyint'
                && count(explode(',', strtr($value['column_comment'], ['，' => ',']))) <= 3:
                $value['form_type'] = 'radio';
                break;

            case isset($default[$value['column_type']]):
                $value['form_type'] = $default[$value['column_type']];
                break;

            default:
                $value['form_type'] = '';
        }

        return $value;
    }

    /**
     * 关联表处理
     * @param $value
     * @return mixed
     */
    protected function joinTable($value)
    {
        if (substr($value['column_name'], -3) !== '_id' && $value['column_name'] !== 'pid') return $value;

        $table = $value['column_name'] === 'pid' ? '' : substr($value['column_name'], 0, -3);

        $primary = $this->primary($table ?: $_GET['table_name']);
        $labelData = $this->getTableInfo($table ?: $_GET['table_name']);

        if (!$labelData) return $value;

        foreach ($labelData as $item) {
            if (in_array($item['column_type'], ['char', 'varchar'])) {
                $showField = $item['column_name'];
                break;
            }
        }


        $value['form_type'] = 'select';
        $value['join'] = empty($showField) ? '' : "{$table}:{$primary}={$showField}";

        return $value;
    }

    /**
     * 获取主键
     * @param $table
     * @return mixed|string
     */
    private function primary($table)
    {
        $sql = "SELECT
                k.column_name
             FROM
                 information_schema.table_constraints t
             JOIN information_schema.key_column_usage k USING (
                 `constraint_name`,
                 table_schema,
                 `table_name`
             )
             WHERE
                 t.constraint_type = 'PRIMARY KEY'
             AND t.table_schema = :schemas
             AND t.table_name = :tables;
             ";

        $result = $this->sqlExecute($sql, [
            'schemas' => ConfigHelper::get('database_name'),
            'tables' =>  ConfigHelper::get('database_prefix') . $table
        ]);

        if ($result && count($result) == 1) {
            return $result[0]['column_name'];
        }
        return '';
    }

    /**
     * 获取表注释
     * @param string $table
     * @param bool   $isPrefix
     * @return mixed
     */
    public  function getTableComment($table = '', $isPrefix = false)
    {
        $sql = "SELECT TABLE_COMMENT FROM INFORMATION_SCHEMA.TABLES  WHERE TABLE_NAME = :table_names AND TABLE_SCHEMA = :schemas LIMIT 1";

        $isPrefix or $table = ConfigHelper::get('database_prefix') . $table;

        $result = $this->sqlExecute($sql, [
            'table_names' => $table,
            'schemas' => ConfigHelper::get('database_name')
        ]);

        if ($result && !empty($result[0]) && is_array($result[0])) {
            return $result[0]['TABLE_COMMENT'];
        }
        return null;
    }


    /**
     * @param      $var
     * @param bool $return
     * @return mixed|string|string[]|null|void
     */
    public static function varExport($var, $return = false)
    {
        $export = var_export($var, true);
        $export = preg_replace("/^([ ]*)(.*)/m", '$1$1$2', $export);
        $array = preg_split("/\r\n|\n|\r/", $export);
        $array = preg_replace(["/\s*array\s\($/", "/\)(,)?$/", "/\s=>\s$/"], [null, ']$1', ' => ['], $array);
        $export = join(PHP_EOL, array_filter(["["] + $array));
        if ((bool)$return) return $export; else echo $export;
    }

    /**
     * 缩进换行
     * @param int  $number 缩进次数
     * @param null $lineFeed    换行位置，默认不换行，1 缩进之前换行，2 缩进之后换行
     * @return string
     */
    public static function indentAndLineFeed($number, $lineFeed = null)
    {
        $str = str_repeat(self::INDENT, $number);

        if ($lineFeed)
            return $lineFeed == self::BEFORE ? PHP_EOL . $str : $str . PHP_EOL;
        else
            return $str;
    }


    /**
     * 转数组合法代码
     * @param array $array
     * @param int   $indent
     * @param bool  $notKey
     * @return string|void
     */
    public static function toLegalArrayCode(array $array, int $indent = 2, $notKey = false)
    {
        if ($indent === 0 && !$notKey) {
            return self::toLegalArrayCodeNotLineFeed($array);
        }

        if ($notKey) {
            return self::toLegalArrayCodeLineFeedNotKey($array, $indent);
        }

        $code = '[';
        foreach ($array as $key => $value) {
            $value = preg_match('/^\|.+|\n+\|$/', $value) ? strtr($value, ['|' => '']) : "'{$value}'";
            $code .= self::indentAndLineFeed($indent, self::BEFORE) .
                "'{$key}' => {$value},";
        }

        return  $code .  self::indentAndLineFeed($indent - 1, self::BEFORE) . ']';
    }

    /**
     * 数组合法的字符串代码 @不换行
     * @param array $array
     * @return string
     */
    private static function toLegalArrayCodeNotLineFeed(array $array)
    {
        return '[\'' . implode("','", $array) . '\']';
    }

    /**
     * @param array $array
     * @param int   $indent
     * @return string
     */
    private static function toLegalArrayCodeLineFeedNotKey(array $array, int $indent)
    {
        $code = '[%s\'' . implode("'," . self::indentAndLineFeed($indent, self::BEFORE) . "'", $array) . '\'%1$s]';
        return sprintf($code, self::indentAndLineFeed($indent - 1, self::BEFORE));
    }
}