<?php
namespace app\controller;

use PDO;
use Exception;
use app\BaseController;
use think\facade\View;
use think\facade\Cache;

class Install extends BaseController
{
    public function index()
    {
        if (file_exists(app()->getRootPath().'.env')){
            return '当前已经安装成功，如果需要重新安装，请手动删除根目录.env文件';
        }
        if(request()->isPost()){
            $mysql_host = input('post.mysql_host', null, 'trim');
            $mysql_port = intval(input('post.mysql_port', '3306'));
            $mysql_user = input('post.mysql_user', null, 'trim');
            $mysql_pwd = input('post.mysql_pwd', null, 'trim');
            $mysql_name = input('post.mysql_name', null, 'trim');
            $mysql_prefix = input('post.mysql_prefix', 'cloud_', 'trim');
            $admin_username = input('post.admin_username', null, 'trim');
            $admin_password = input('post.admin_password', null, 'trim');

            if(!$mysql_host || !$mysql_user || !$mysql_pwd || !$mysql_name || !$admin_username || !$admin_password){
                return json(['code'=>0, 'msg'=>'必填项不能为空']);
            }

            $configdata = file_get_contents(app()->getRootPath().'.env.example');
            $configdata = str_replace(['{dbhost}','{dbname}','{dbuser}','{dbpwd}','{dbport}','{dbprefix}'], [$mysql_host, $mysql_name, $mysql_user, $mysql_pwd, $mysql_port, $mysql_prefix], $configdata);

            try{
                $DB=new PDO("mysql:host=".$mysql_host.";dbname=".$mysql_name.";port=".$mysql_port,$mysql_user,$mysql_pwd);
            }catch(Exception $e){
                if($e->getCode() == 2002){
                    $errorMsg='连接数据库失败：数据库地址填写错误！';
                }elseif($e->getCode() == 1045){
                    $errorMsg='连接数据库失败：数据库用户名或密码填写错误！';
                }elseif($e->getCode() == 1049){
                    $errorMsg='连接数据库失败：数据库名不存在！';
                }else{
                    $errorMsg='连接数据库失败：'.$e->getMessage();
                }
                return json(['code'=>0, 'msg'=>$errorMsg]);
            }
            $DB->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
            $DB->exec("set sql_mode = ''");
            $DB->exec("set names utf8");

            $sqls=file_get_contents(app()->getRootPath().'install.sql');
            $sqls=explode(';', $sqls);
            $sqls[]="REPLACE INTO `".$mysql_prefix."config` VALUES ('syskey', '".random(16)."')";
            $sqls[]="REPLACE INTO `".$mysql_prefix."config` VALUES ('admin_username', '".addslashes($admin_username)."')";
            $sqls[]="REPLACE INTO `".$mysql_prefix."config` VALUES ('admin_password', '".addslashes($admin_password)."')";
            $success=0;$error=0;$errorMsg=null;
            foreach ($sqls as $value) {
                $value=trim($value);
                if(empty($value))continue;
                $value = str_replace('cloud_',$mysql_prefix,$value);
                if($DB->exec($value)===false){
                    $error++;
                    $dberror=$DB->errorInfo();
                    $errorMsg.=$dberror[2]."\n";
                }else{
                    $success++;
                }
            }
            if(empty($errorMsg)){
                if(!file_put_contents(app()->getRootPath().'.env', $configdata)){
                    return json(['code'=>0, 'msg'=>'保存失败，请确保网站根目录有写入权限']);
                }
                Cache::clear();
                return json(['code'=>1, 'msg'=>'安装完成！成功执行SQL语句'.$success.'条']);
            }else{
                return json(['code'=>0, 'msg'=>$errorMsg]);
            }
        }
        return view();
    }
    
}