import sys
import os

from PyQt5.QtCore import QObject, QDateTime
from PyQt5.QtWidgets import QApplication
from PyQt5.QtGui import QGuiApplication

"""模块路径加到当前模块扫描的路径里"""
sys.path.append(os.path.dirname(__file__))
# import numpy as np
# import cv2
"""
@项目 ：ThreadLoop
@文件 ：LinkList.py    
@作者 ：xsh
@时间 ：2021/11/21 15:47
@功能 :
@说明 ：

"""
from LinkNode import myThread, LinkNode


class LinkList(QObject):
    MaxLen: int  # 链表最大长度
    Size: int  # 当前长度
    Head: LinkNode  # 头节点
    Tail: LinkNode  # 尾节点
    Current: LinkNode  # 当前节点
    Info: str  # 节点信息

    def __init__(self, info='', maxLen=int(50), parent=None):
        super(LinkList, self).__init__(parent)
        self.Info = info
        self.MaxLen = maxLen
        self.Size = 0
        self.Head = None  # 头节点
        self.Tail = None  # 尾节点
        self.Current = None  # 当前节点
        self.setMaxLen(maxLen)


    def __initAllValue(self):
        self.Size = 0
        self.Head = LinkNode(self.Size - 1)
        self.Tail = LinkNode(self.Size - 2)
        self.Current = LinkNode(self.Size)

        self.Head.LastNode = self.Tail
        self.Head.NextNode = self.Current

        self.Current.LastNode = self.Head
        self.Current.NextNode = self.Tail

        self.Tail.LastNode = self.Current
        self.Tail.NextNode = self.Head

    """删除所有节红框"""

    def __delAllNode(self):
        if self.Head is None:
            return
        Head = self.Head

        while Head.NextNode is not None:
            oldNode = Head
            Head = Head.NextNode
            self.__deleteNode(oldNode)
            self.Size -= 1
        self.__deleteNode(Head)
        self.Size = 0

    """删除指定的节点"""

    def __deleteNode(self, Node: LinkNode):
        Node.Stop()
        while Node.isRunning():
            pass
        del Node
        Node = None

    """追加一个节点"""

    def appendNode(self):
        if self.Current == self.Head:
            self.Current = self.Head.NextNode
        if self.Current == self.Tail:
            self.Current = self.Head.NextNode
        CurrentIndex = self.Current.CurrentThreadNumber + 1
        NewNode = LinkNode(CurrentIndex)
        NewNode.NextNode = self.Current.NextNode
        NewNode.LastNode = self.Current
        self.Current.NextNode = NewNode
        ChangeNode = NewNode.NextNode
        while ChangeNode != self.Tail:
            CurrentIndex += 1
            ChangeNode.CurrentThreadNumber = CurrentIndex
            ChangeNode = ChangeNode.NextNode
        self.Current = NewNode
        self.Size += 1

    """播入一个节点"""

    def insertNode(self):
        if self.Current == self.Head:
            self.Current = self.Head.NextNode
        if self.Current == self.Tail:
            self.Current = self.Head.NextNode
        CurrentIndex = self.Current.CurrentThreadNumber
        NewNode = LinkNode(CurrentIndex)
        NewNode.LastNode = self.Current.LastNode
        NewNode.NextNode = self.Current

        self.Current.LastNode = NewNode
        ChangeNode = self.Current
        while ChangeNode != self.Tail:
            CurrentIndex += 1
            ChangeNode.CurrentThreadNumber = CurrentIndex
            ChangeNode = ChangeNode.NextNode

        self.Current = NewNode
        self.Size += 1

    """暂停所有节点"""

    def PauseAllNode(self):
        Head = self.Head
        while Head != self.Tail:
            Head.Pause()
            Head = Head.NextNode

    """停止所有节点线程"""

    def StopAllNode(self):
        Head = self.Head
        while Head != self.Tail:
            Head.Stop()
            Head = Head.NextNode

    """根据最大线程长度，初始化链表"""

    def InitNode(self):
        if self.MaxLen < 1:
            return
        while self.Size < self.MaxLen:
            self.appendNode()
        self.Current = self.Head.NextNode
        print("当前时间:{0} 创建{1}成功, 长度为:{2}".format(
            QDateTime.currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz"),
            self.Info,
            self.MaxLen))
    def setMaxLen(self, maxLen=50):
        if maxLen < 1:
            return
        self.MaxLen = maxLen
        self.__delAllNode()
        self.__initAllValue()
        self.InitNode()

    def Start(self, *args):
        Current = self.Current
        if Current.isRunning():
            if not Current.isFree():
                while not Current.isFree():
                    if Current == self.Tail:
                        Current = self.Head.NextNode
                    if Current == self.Head:
                        Current = self.Head.NextNode
                    Current = Current.NextNode
        Current.Start(*args)
        self.Current = Current
    def DrawNode(self):
        Head = self.Head
        while Head != self.Tail:
            print("当前线程ID:{0}-{1}".format(Head.CurrentThreadNumber, Head.CurrentThread.currentThreadId()))
            Head = Head.NextNode
        print("当前线程ID:{0}-{1}".format(Head.CurrentThreadNumber, Head.CurrentThread.currentThreadId()))