# -*- coding: utf-8 -*-
"""
/***************************************************************************
 ExportToWebDialog

                              -------------------
        begin                : 2017-06-11
        copyright            : (C) 2017 Minoru Akagi
        email                : akaginch@gmail.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
"""
import os
from PyQt5.Qt import Qt
from PyQt5.QtCore import QDir
from PyQt5.QtWidgets import QDialog, QFileDialog, QMessageBox

from .build import ThreeJSExporter
from .qgis2threejstools import getTemplateConfig, logMessage, openHTMLFile, templateDir, temporaryOutputDir
from .ui.exporttowebdialog import Ui_ExportToWebDialog


class ExportToWebDialog(QDialog):

  def __init__(self, parent, qgisIface, settings):
    QDialog.__init__(self, parent)
    self.setAttribute(Qt.WA_DeleteOnClose)

    self.iface = qgisIface
    self.settings = settings

    self.ui = Ui_ExportToWebDialog()
    self.ui.setupUi(self)

    # populate template list items
    cbox = self.ui.comboBox_Template
    for i, entry in enumerate(QDir(templateDir()).entryList(["*.html", "*.htm"])):
      config = getTemplateConfig(entry)
      cbox.addItem(config.get("name", entry), entry)

      # set tool tip text
      desc = config.get("description", "")
      if desc:
        cbox.setItemData(i, desc, Qt.ToolTipRole)

    index = cbox.findData(settings.template())
    if index != -1:
      cbox.setCurrentIndex(index)

    self.templateChanged()

    # output directory
    self.ui.lineEdit_OutputDir.setText(os.path.dirname(settings.outputFileName()))

    # template specific settings
    for key, value in settings.options().items():
      if key == "AR.MND":
        self.ui.lineEdit_MND.setText(str(value))

    self.ui.comboBox_Template.currentIndexChanged.connect(self.templateChanged)
    self.ui.pushButton_Browse.clicked.connect(self.browseClicked)
    self.ui.pushButton_Export.clicked.connect(self.exportClicked)
    self.ui.pushButton_Cancel.clicked.connect(self.close)

  def templateChanged(self, index=None):
    # update settings widget visibility
    config = getTemplateConfig(self.ui.comboBox_Template.currentData())
    optset = set(config.get("options", "").split(","))
    optset.discard("")

    # template settings group box
    self.ui.groupBox.setVisible(bool(optset))

    if optset:
      for widget in [self.ui.label_MND, self.ui.lineEdit_MND]:
        widget.setVisible("AR.MND" in optset)

  def browseClicked(self):
    # directory select dialog
    d = self.ui.lineEdit_OutputDir.text() or QDir.homePath()
    d = QFileDialog.getExistingDirectory(self, self.tr("Select Output Directory"), d)
    if d:
      self.ui.lineEdit_OutputDir.setText(d)

  def exportClicked(self):
    # template
    self.settings.setTemplate(self.ui.comboBox_Template.currentData())

    options = self.settings.templateConfig().get("options", "")
    if options:
      optlist = options.split(",")

      if "AR.MND" in optlist:
        try:
          self.settings.setOption("AR.MND", float(self.ui.lineEdit_MND.text()))
        except Exception as e:
          QMessageBox.warning(self, "Qgis2threejs", "Invalid setting value for M.N. direction. Must be a numeric value.")
          return

    # output html file name
    out_dir = self.ui.lineEdit_OutputDir.text()
    filename = self.ui.lineEdit_Filename.text()
    is_temporary = (out_dir == "")
    if is_temporary:
      out_dir = temporaryOutputDir()
      #title, ext = os.path.splitext(filename)
      #filename = title + datetime.today().strftime("%Y%m%d%H%M%S") + ext

    filepath = os.path.join(out_dir, filename)
    if not is_temporary and os.path.exists(filepath):
      if QMessageBox.question(self, "Qgis2threejs", "The HTML file already exists. Do you want to overwrite it?", QMessageBox.Ok | QMessageBox.Cancel) != QMessageBox.Ok:
        return

    self.settings.setOutputFilename(filepath)

    err_msg = self.settings.checkValidity()
    if err_msg is not None:
      QMessageBox.warning(self, "Qgis2threejs", err_msg or "Invalid settings")
      return

    self.ui.pushButton_Export.setEnabled(False)
    self.progress(0)

    # export
    exporter = ThreeJSExporter(self.settings, self.progress)
    exporter.export()

    self.progress(100)

    if is_temporary:
      self.settings.setOutputFilename("")

    # store last settings
    # settings = QSettings()
    # settings.setValue("/Qgis2threejs/lastTemplate", self.settings.templatePath)

    if self.ui.checkBox_openPage.isChecked():
      if not openHTMLFile(filepath):
        return

    self.close()

  def progress(self, percentage=None, statusMsg=None):
    #TODO: [Web export] progress
    pass