import inspect
import shutil
import os
from PyQt5.QtCore import QSize
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QTreeWidget, QTreeWidgetItem, QFileDialog, \
    QMessageBox, QInputDialog, QLineEdit, QPushButton, QHBoxLayout
import ftplib
from qgis.PyQt import QtWidgets
from PyQt5 import QtCore
QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
from PyQt5.QtWebEngineWidgets import *
from PyQt5.QtCore import QUrl
from typing import Optional
from PyQt5.QtWebEngineWidgets import QWebEngineView
from .FtpUitl import FtpOper
# from .ModelViewer import ModelWebView

class ModelWebView(QWebEngineView):
    def __init__(
            self,
            weburi: str,
            title: Optional[str] = "自定义窗口",
            windowW: Optional[int] = 1200,
            windowH: Optional[int] = 800,
    ):
        super().__init__()
        self.uri = weburi
        self.resize(windowW, windowH)
        self.setWindowTitle(title)
        self.page = QWebEnginePage()
        self.page.load(QUrl(self.uri))
        self.setPage(self.page)
class FtpManage(QtWidgets.QDockWidget):
    def __init__(self, iface):
        super().__init__()
        # 连接到FTP服务器
        self.ftpHost = '127.0.0.1'
        self.ftpPort = 2021
        self.ftpUsername = 'user1'
        self.ftpPassword = 'password'
        self.modelViewerUri = 'http://127.0.0.1:8091/website/#model='
        self.modelBaseUri = 'http://127.0.0.1:8090'
        self.ftpOper = FtpOper()
        self.ftpOper.ftp.connect(self.ftpHost, self.ftpPort)
        self.ftpOper.ftp.login(self.ftpUsername, self.ftpPassword)
        self.fileItem = None
        self.ftpItem = None
        self.setupUi()
        self.iface = iface

    def setupUi(self):
        current_directory = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))  # 获取当前路径
        # 构建布局
        self.mainLayout = QVBoxLayout()
        self.setLayout(self.mainLayout)
        self.layoutH = QHBoxLayout()  # 按钮布局
        self.layoutV = QVBoxLayout()  # 树结构的布局
        self.mainLayout.addLayout(self.layoutH)
        self.mainLayout.addLayout(self.layoutV)  # 为窗体添加布局
        self.resize(600, 500)
        self.setWindowTitle("文件服务器")
        self.setWindowIcon(QIcon(os.path.join(current_directory + "\\icon", "logo.png")))
        # 功能按钮区域
        self.uploadFileButton = QPushButton(self)
        self.uploadFileButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件上传.png")))
        self.uploadFileButton.setIconSize(QSize(32, 32))
        self.uploadFileButton.setFixedSize(36, 36)
        self.uploadFileButton.setToolTip("上传文件")
        self.uploadFileButton.clicked.connect(self.actionUploadHandler)
        self.layoutH.addWidget(self.uploadFileButton)
        self.uploadFolderButton = QPushButton(self)
        self.uploadFolderButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件夹上传.png")))
        self.uploadFolderButton.setIconSize(QSize(32, 32))
        self.uploadFolderButton.setFixedSize(36, 36)
        self.uploadFolderButton.setToolTip("上传文件夹")
        self.uploadFolderButton.clicked.connect(self.actionUploadDirHandler)
        self.layoutH.addWidget(self.uploadFolderButton)
        self.downloadButton = QPushButton(self)
        self.downloadButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件下载.png")))
        self.downloadButton.setIconSize(QSize(32, 32))
        self.downloadButton.setFixedSize(36, 36)
        self.downloadButton.setToolTip("下载")
        self.downloadButton.clicked.connect(self.actionDownloadHandler)
        self.layoutH.addWidget(self.downloadButton)
        self.createDirButton = QPushButton(self)
        self.createDirButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "新建文件夹.png")))
        self.createDirButton.setIconSize(QSize(32, 32))
        self.createDirButton.setFixedSize(36, 36)
        self.createDirButton.setToolTip("新建目录")
        self.createDirButton.clicked.connect(self.actionCreateHandler)
        self.layoutH.addWidget(self.createDirButton)
        self.renameButton = QPushButton(self)
        self.renameButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件重命名.png")))
        self.renameButton.setIconSize(QSize(32, 32))
        self.renameButton.setFixedSize(36, 36)
        self.renameButton.setToolTip("重命名")
        self.renameButton.clicked.connect(self.actionRenameHandler)
        self.layoutH.addWidget(self.renameButton)
        self.deleteButton = QPushButton(self)
        self.deleteButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件删除.png")))
        self.deleteButton.setIconSize(QSize(32, 32))
        self.deleteButton.setFixedSize(36, 36)
        self.deleteButton.setToolTip("删除")
        self.deleteButton.clicked.connect(self.actionDeleteHandler)
        self.layoutH.addWidget(self.deleteButton)
        self.modelViewButton = QPushButton(self)
        self.modelViewButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "模型查看.png")))
        self.modelViewButton.setIconSize(QSize(32, 32))
        self.modelViewButton.setFixedSize(36, 36)
        self.modelViewButton.setToolTip("查看模型")
        self.modelViewButton.clicked.connect(self.action3DHandler)
        self.layoutH.addWidget(self.modelViewButton)
        self.openFileButton = QPushButton(self)
        self.openFileButton.setIcon(QIcon(os.path.join(current_directory + "\\icon", "文件查看.png")))
        self.openFileButton.setIconSize(QSize(32, 32))
        self.openFileButton.setFixedSize(36, 36)
        self.openFileButton.setToolTip("查看文件")
        self.openFileButton.clicked.connect(self.actionFileOpenHandler)
        self.layoutH.addWidget(self.openFileButton)
        # 目录树结构区
        self.treeWidget = QTreeWidget()  # QTreeWidget组件定义
        self.treeWidget.headerItem().setText(0, "列表")  # FTP服务器节点树
        self.treeWidget.headerItem().setText(1, "类型")  # 节点对应的类型：文件，文件夹
        self.treeWidget.headerItem().setText(2, "路径")  # 当前节点在FTP服务器中的路径，方便文件操作时获取服务器中路径，为隐藏列
        self.treeWidget.setColumnWidth(0, 375)  # 给第1列设置列宽
        self.rootItem = QTreeWidgetItem()
        self.rootItem.setText(0, str(self.ftpOper.ftp.host))  # 给根节点增加文本
        self.treeWidget.addTopLevelItem(self.rootItem)  # 增加根节点
        self.layoutV.addWidget(self.treeWidget)  # 将组件添加到布局中
        self.treeWidget.setColumnHidden(2, True)  # 隐藏路径列

    def actionUploadHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            if self.currentItem.text(1) == '文件':  # 如果选中文件节点则获取此节点的父节点
                self.ftp_path = self.currentItem.parent().text(2)
                self.ftpItem = self.currentItem.parent()
            elif self.currentItem.text(1) == '文件夹':
                self.ftp_path = self.currentItem.text(2)
                self.ftpItem = self.currentItem
            file_paths, _ = QFileDialog.getOpenFileNames(None, '选择文件', '', 'All Files (*)')
            if len(file_paths) > 0:
                for file_path in file_paths:
                    self.file_name = os.path.basename(file_path)
                    self.ftpOper.uploadfile(file_path, self.ftp_path)
                    self.fileItem = QTreeWidgetItem()
                    self.fileItem.setText(0, self.file_name)
                    self.fileItem.setText(1, '文件')
                    self.fileItem.setText(2, self.ftp_path + '/' + self.file_name)
                    # 已有同名节点不再增加此名称的节点
                    havesame = self.findTreeSameNode(self.ftpItem, self.file_name)
                    if not havesame:
                        self.ftpItem.addChild(self.fileItem)
                QMessageBox.information(self, "提示信息", "文件上传完成")
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 文件上传时查找目录树此节点的子节点中是否已有此名称
    def findTreeSameNode(self, thisitem, filename):
        for i in range(thisitem.childCount()):
            child = thisitem.child(i)
            if child.text(0) == filename:
                return True
            else:
                return False

    # 文件夹上传操作
    def actionUploadDirHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            if self.currentItem.text(1) == '文件':  # 如果选中文件节点则获取此节点的父节点
                self.ftp_path = self.currentItem.parent().text(2)
                self.ftpItem = self.currentItem.parent()
            else:
                self.ftp_path = self.currentItem.text(2)
                self.ftpItem = self.currentItem
            dir_path = QFileDialog.getExistingDirectory(None, "选择文件夹", "")
            if dir_path:
                self.ftpOper.uploaddir(dir_path, self.ftp_path)
                dirname = os.path.split(dir_path)[-1]  # 文件夹名称
                rootchildItem = QTreeWidgetItem()
                rootchildItem.setText(0, dirname)
                rootchildItem.setText(1, '文件夹')
                rootchildItem.setText(2, self.ftp_path + '/' + dirname)
                self.ftpItem.addChild(rootchildItem)
                self.traverseLocalDirectory(dir_path, rootchildItem, self.ftp_path + '/' + dirname)
                QMessageBox.information(self, "提示信息", "文件夹上传完成")
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 遍历本地目录，构建可视化树结构
    def traverseLocalDirectory(self, dirpath, item, ftppath):
        for file in os.listdir(dirpath):
            src = os.path.join(dirpath, file)
            childItem = QTreeWidgetItem()
            childItem.setText(0, file)
            if os.path.isfile(src):
                childItem.setText(1, '文件')
                childItem.setText(2, ftppath + '/' + file)
                item.addChild(childItem)
            elif os.path.isdir(src):
                childItem.setText(1, '文件夹')
                childItem.setText(2, ftppath + '/' + file)
                item.addChild(childItem)
                # 递归调用自身
                self.traverseLocalDirectory(src, childItem, ftppath + '/' + file)

    # 文件下载操作
    def actionDownloadHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            dir_path = QFileDialog.getExistingDirectory(None, "选择文件夹", "")
            if dir_path:
                if self.currentItem.text(1) == '文件':
                    localfilepath = dir_path + '/' + self.currentItem.text(0)
                    reomtefilepath = self.currentItem.text(2)
                    self.ftpOper.downloadfile(localfilepath, reomtefilepath)
                else:
                    localdirpath = dir_path + '/' + self.currentItem.text(0)
                    remotedirpath = self.currentItem.text(2)
                    self.ftpOper.downloaddir(localdirpath, remotedirpath)
                QMessageBox.information(self, "提示信息", "下载完成")
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 文件删除操作
    def actionDeleteHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            questiontext = '是否要删除所选中的:【' + self.currentItem.text(0) + '】？'
            question = QMessageBox.question(None, '删除确认', questiontext)
            if question == QMessageBox.Yes:
                reomtefilepath = self.currentItem.text(2)
                if self.currentItem.text(1) == '文件':
                    remotepath, remotefile_name = os.path.split(reomtefilepath)
                    self.ftpOper.deletfile(remotefile_name, remotepath)  # 删除FTP服务端文件
                    self.currentItem.parent().removeChild(self.currentItem)  # 删除目录树对应的节点
                else:
                    self.ftpOper.deletedir(reomtefilepath)
                    self.currentItem.parent().removeChild(self.currentItem)  # 删除目录树对应的节点
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 创建文件夹操作
    def actionCreateHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            dirname, ok = QInputDialog.getText(QWidget(), '新建文件夹', '请输入文件夹名称：')
            if ok:
                if self.currentItem.text(1):
                    if self.currentItem.text(1) == '文件':  # 如果选中文件节点则获取此节点的父节点
                        self.dirpath = self.currentItem.parent().text(2)
                        self.ftpItem = self.currentItem.parent()
                    else:
                        self.dirpath = self.currentItem.text(2)
                        self.ftpItem = self.currentItem
                else:
                    self.dirpath = ''
                    self.ftpItem = self.currentItem
                self.newdirpath = self.dirpath + '/' + dirname
                self.rusulttext = self.ftpOper.makedir(dirname, self.dirpath, self.newdirpath)
                if self.rusulttext == '文件夹创建成功':
                    self.fileItem = QTreeWidgetItem()
                    self.fileItem.setText(0, dirname)
                    self.fileItem.setText(1, '文件夹')
                    self.fileItem.setText(2, self.newdirpath)
                    self.ftpItem.addChild(self.fileItem)
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 重命名操作
    def actionRenameHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            extension = None
            oldname = None
            oldpath = None
            if self.currentItem.text(1) == '文件':
                oldname, oldextension = os.path.splitext(self.currentItem.text(0))
            elif self.currentItem.text(1) == '文件夹':
                oldname = self.currentItem.text(0)
            newname, ok = QInputDialog.getText(QWidget(), '重命名', '请输入新名称', QLineEdit.Normal, oldname)
            if ok:
                if self.currentItem.text(1) == '文件':
                    oldpath = self.currentItem.text(2)
                    pathparent, name1 = os.path.split(oldpath)
                    name2, extension = os.path.splitext(name1)
                    newpath = pathparent + '/' + newname + extension
                else:
                    oldpath = self.currentItem.text(2)
                    if not (self.currentItem.parent().text(1)):  # 根目录
                        newpath = '/' + newname
                    else:
                        pathparent, name1 = os.path.split(oldpath)
                        newpath = pathparent + '/' + newname
                result = self.ftpOper.rename(oldpath, newpath)
                if result:
                    if extension:
                        self.currentItem.setText(0, newname + extension)
                    else:
                        self.currentItem.setText(0, newname)
                    self.currentItem.setText(2, newpath)
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 查看三维模型操作
    def action3DHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            if (self.currentItem.text(1) == '文件'):
                modelUrl = self.modelViewerUri + self.modelBaseUri + self.currentItem.text(2)
                self.modelWebView = ModelWebView(weburi=modelUrl, title='数管系统三维模型浏览')
                self.modelWebView.show()
            else:
                QMessageBox.information(self, "提示信息", "请选择文件类型树节点")
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 打开文件操作
    def actionFileOpenHandler(self):
        if self.treeWidget.currentItem():
            self.currentItem = self.treeWidget.currentItem()
            if (self.currentItem.text(1) == '文件'):
                localdir = os.path.abspath(os.curdir)
                localtempdir = localdir + '/temp'
                if os.path.exists(localtempdir):
                    if self.currentItem.text(1) == '文件':
                        localfilepath = localtempdir + '/' + self.currentItem.text(0)
                        reomtefilepath = self.currentItem.text(2)
                        if os.path.exists(localfilepath):
                            try:
                                os.startfile(localfilepath)  # 打开本地文件
                            except Exception as e:
                                print(e)
                        else:
                            self.ftpOper.downloadfile(localfilepath, reomtefilepath)  # 下载到本地临时文件夹
                            try:
                                os.startfile(localfilepath)  # 打开本地文件
                            except Exception as e:
                                print(e)
            else:
                QMessageBox.information(self, "提示信息", "请选择文件类型树节点")
        else:
            QMessageBox.information(self, "提示信息", "请选择树节点")

    # 创建本地文件临时文件夹
    def createTempDir(self):
        localdir = os.path.abspath(os.curdir)
        localtempdir = localdir + '/temp'
        if not (os.path.exists(localtempdir)):  # 如不存在，创建本地临时文件夹
            os.makedirs(localtempdir)
        else:  # 如存在，删除后重新创建本地临时文件夹
            shutil.rmtree(localtempdir)
            os.mkdir(localtempdir)

    # 遍历FTP服务端目录，构建可视化树结构
    def traverseFTPDirectory(self, ftp, path, item):
        ftp.cwd(path)
        file_list = ftp.nlst()
        for file in file_list:
            try:
                ftp.cwd(path + '/' + file)  # 尝试切换到子目录
                # 添加子节点
                childItem = QTreeWidgetItem()
                childItem.setText(0, file)
                childItem.setText(1, '文件夹')
                childItem.setText(2, (path + '/' + file).replace('//', '/'))
                item.addChild(childItem)
                # 递归调用自身
                self.traverseFTPDirectory(ftp, (path + '/' + file).replace('//', '/'), childItem)
                ftp.cwd('..')  # 返回到上一级目录
            except ftplib.error_perm:
                # 添加子节点
                childItem = QTreeWidgetItem()
                childItem.setText(0, file)
                childItem.setText(1, '文件')
                childItem.setText(2, (path + '/' + file).replace('//', '/'))
                item.addChild(childItem)