<?php


namespace Lib\Imap\Request;

use Lib\Imap\Imap;
use Lib\Imap\Parse\MessageItem;

/**
 * 登录
 * @author：dc
 * @time 2024/9/13 17:09
 * Class Login
 * @package Lib\Imap\Request
 */
class Folder extends Request{

    protected string $folder;

    /**
     * 未读数量 有的邮箱是不会返回未读数量的
     * @var int
     */
    protected int $unseen = 0;

    /**
     * 总数
     * @var int
     */
    protected int $total = 0;

    /**
     * 最近邮件的数量
     * @var int
     */
    protected int $recent = 0;



    /**
     * 标签
     * @var array
     */
    protected array $flags = [];

    /**
     * 是否初始了，就是是否select 文件夹
     * @var bool
     */
    private bool $isInit = false;


    /**
     * Folder constructor.
     * @param Imap $imap
     * @param string $folder
     */
    public function __construct(Imap $imap, string $folder)
    {
        parent::__construct($imap);

        $this->folder = $folder;
    }


    /**
     * 文件夹名称
     * @return string
     * @author：dc
     * @time 2024/9/26 11:06
     */
    public function getName(){
        return $this->folder;
    }


    public function exec(): static
    {

        if(!$this->imap->checkedFolder($this->folder)){
            $this->cmd('SELECT "%s"',$this->folder);

//        ["* 128 EXISTS\r\n","* 2 RECENT\r\n","* OK [UIDVALIDITY 1] UIDs valid\r\n","* FLAGS (\\Answered \\Seen \\Deleted \\Draft \\Flagged)\r\n","* OK [PERMANENTFLAGS (\\Answered \\Seen \\Deleted \\Draft \\Flagged)] Limited\r\n","TAG3 OK [READ-WRITE] SELECT completed\r\n"]
            if($this->isOk()){
                $this->isInit = true;

                foreach ($this->result as $item){
                    $item = trim($item);
                    // 总数量
                    if(preg_match("/^\* (\d+) EXISTS$/i",$item,$m)){
                        $this->total = (int) $m[1];
                    }
                    // 最近的
                    elseif (preg_match("/^\* (\d+) RECENT$/i",$item,$m)){
                        $this->recent = (int) $m[1];
                    }
                    // 未读
                    elseif (preg_match("/^\*.*\[UNSEEN (\d+)\]/i",$item,$m)){
                        $this->unseen = (int) $m[1];
                    }
                    // tag
                    elseif (preg_match("/^\* FLAGS \((.*)\)$/i",$item,$m)){
                        $this->flags = explode(' ',$m[1]);
                    }

                }
                // 设置
                $this->imap->setCheckedFolder($this->folder);
            }

        }


        return $this;
    }


    /**
     * 邮件列表
     * @return Msg
     * @author：dc
     * @time 2024/9/14 11:36
     */
    public function msg():Msg {
        return new Msg($this->imap,$this);
    }


    /**
     * 当前文件夹 可以使用的标签
     * @return array
     */
    public function getFlags(): array
    {
        return $this->getData('flags');
    }

    /**
     * 最近收到的邮件 数量
     * @return int
     */
    public function getRecent(): int
    {
        return $this->getData('recent');
    }

    /**
     * 当前文件夹有多少未读数量
     * @return int
     */
    public function getUnseen(): int
    {
        return $this->getData('unseen');
    }


    /**
     * 读取 文件夹 下面有多少 邮件 总数
     * @return int
     */
    public function getTotal(): int
    {
        return $this->getData('total');
    }

    /**
     * 读取文件夹属性
     * @param string $name
     * @return int|array
     * @author：dc
     * @time 2024/9/24 9:20
     */
    public function getData(string $name=''):int|array {
        if(!$this->isInit){
            $this->exec();
        }
        switch ($name){
            case 'total':{return $this->total;}
            case 'unseen':{return $this->unseen;}
            case 'recent':{return $this->recent;}
            case 'flags':{return $this->flags;}
            default:{
                return [
                    'total'=>$this->total,
                    'unseen'=>$this->unseen,
                    'recent'=> $this->recent,
                    'flags'=> $this->flags
                ];
            }
        }
    }


    /**
     * 关闭当前目录 一般情况用不到
     * @return bool
     * @author：dc
     * @time 2024/9/19 14:04
     */
    public function close():bool {
        // 必须初始了 并且在当前文件夹下面
        if($this->isInit && $this->imap->checkedFolder($this->folder)){
            $this->cmd('CLOSE');
            return $this->isOk();
        }
        return true;
    }

    /**
     * 创建目录
     * @return bool
     * @author：dc
     * @time 2024/9/20 13:43
     */
    public function create():bool {
        $this->cmd('CREATE "%s"',$this->folder);
        return $this->isOk();
    }

    /**
     * 修改目录
     * @param string $newFolder 新的文件夹名称
     * @param bool $is_utf7 是否是utf7的编码
     * @return bool
     * @author：dc
     * @time 2024/9/20 13:47
     */
    public function rename(string $newFolder, bool $is_utf7 = true):bool {
        // 需要转码
        if(!$is_utf7) $newFolder  =   mb_convert_encoding($newFolder,'UTF7-IMAP','UTF-8');

//        RENAME oldfolder newfolder
        $this->cmd('RENAME "%s" "%s"',$this->folder,$newFolder);

        return $this->isOk();
    }

    /**
     * 删除 目录
     * @return bool
     * @author：dc
     * @time 2024/9/20 13:50
     */
    public function delete():bool {

        $this->cmd('DELETE "%s"',$this->folder);

        return $this->isOk();
    }


    /**
     * 清除 已标记为删除的邮件 不可逆
     * @return bool
     * @author：dc
     * @time 2024/3/14 14:12
     */
    public function expunge():bool {
        return (new Expunge($this->imap))->isOk();
    }

    /**
     * 订阅
     * @return bool
     * @author：dc
     * @time 2024/9/24 10:40
     */
    public function subscribe(){
        $this->cmd('SUBSCRIBE "%s"',$this->folder);

        return $this->isOk();
    }

    /**
     * 取消订阅
     * @return bool
     * @author：dc
     * @time 2024/9/24 10:40
     */
    public function unsubscribe(){
        $this->cmd('UNSUBSCRIBE "%s"',$this->folder);

        return $this->isOk();
    }


}