# -*- coding: utf-8 -*-
"""
/***************************************************************************
 SUEWSConverter
                                 A QGIS plugin
 Converts SUEWS input data between versions
 Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
                              -------------------
        begin                : 2019-12-06
        git sha              : $Format:%H$
        copyright            : (C) 2019 by Fredrik Lindberg
        email                : fredrikl@gvc.gu.se
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
"""
from qgis.PyQt.QtCore import QSettings, QTranslator, QCoreApplication
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt.QtWidgets import QAction, QFileDialog, QMessageBox
# from qgis.gui import QgsMessageBar
import webbrowser
from qgis.core import Qgis
from pathlib import Path
# import tempfile

# Initialize Qt resources from file resources.py
from .resources import *
# Import the code for the dialog
from .suews_converter_dialog import SUEWSConverterDialog
import os.path


class SUEWSConverter:
    """QGIS Plugin Implementation."""

    def __init__(self, iface):
        """Constructor.

        :param iface: An interface instance that will be passed to this class
            which provides the hook by which you can manipulate the QGIS
            application at run time.
        :type iface: QgsInterface
        """
        # Save reference to the QGIS interface
        self.iface = iface
        # initialize plugin directory
        self.plugin_dir = os.path.dirname(__file__)
        # initialize locale
        locale = QSettings().value('locale/userLocale')[0:2]
        locale_path = os.path.join(
            self.plugin_dir,
            'i18n',
            'SUEWSConverter_{}.qm'.format(locale))

        if os.path.exists(locale_path):
            self.translator = QTranslator()
            self.translator.load(locale_path)
            QCoreApplication.installTranslator(self.translator)

        # Declare instance attributes
        self.actions = []
        self.menu = self.tr(u'&SUEWS Converter')

        self.dlg = SUEWSConverterDialog()

        self.dlg.runButton.clicked.connect(self.start_progress)
        self.dlg.pushButtonLoad.clicked.connect(self.folder_path_in)
        self.dlg.pushButtonSave.clicked.connect(self.folder_path_out)
        self.dlg.helpButton.clicked.connect(self.help)
        self.fileDialog = QFileDialog()
        self.fileDialog.setNameFilter("(*.yml)")
        # self.fileDialog.setFileMode(QFileDialog.Directory)
        # self.fileDialog.setOption(QFileDialog.ShowDirsOnly, True)
        self.fileDialognml = QFileDialog()
        self.fileDialognml.setNameFilter("(RunControl.nml)")

        # Check if plugin was started the first time in current QGIS session
        # Must be set in initGui() to survive plugin reloads
        self.first_start = None

    # noinspection PyMethodMayBeStatic
    def tr(self, message):
        """Get the translation for a string using Qt translation API.

        We implement this ourselves since we do not inherit QObject.

        :param message: String for translation.
        :type message: str, QString

        :returns: Translated version of message.
        :rtype: QString
        """
        # noinspection PyTypeChecker,PyArgumentList,PyCallByClass
        return QCoreApplication.translate('SUEWSConverter', message)


    def add_action(
        self,
        icon_path,
        text,
        callback,
        enabled_flag=True,
        add_to_menu=True,
        add_to_toolbar=True,
        status_tip=None,
        whats_this=None,
        parent=None):

        icon = QIcon(icon_path)
        action = QAction(icon, text, parent)
        action.triggered.connect(callback)
        action.setEnabled(enabled_flag)

        if status_tip is not None:
            action.setStatusTip(status_tip)

        if whats_this is not None:
            action.setWhatsThis(whats_this)

        if add_to_toolbar:
            # Adds plugin icon to Plugins toolbar
            self.iface.addToolBarIcon(action)

        if add_to_menu:
            self.iface.addPluginToMenu(
                self.menu,
                action)

        self.actions.append(action)

        return action

    def initGui(self):
        """Create the menu entries and toolbar icons inside the QGIS GUI."""

        icon_path = ':/plugins/suews_converter/icon.png'
        self.add_action(
            icon_path,
            text=self.tr(u''),
            callback=self.run,
            parent=self.iface.mainWindow())

        # will be set False in run()
        self.first_start = True

    def unload(self):
        """Removes the plugin menu item and icon from QGIS GUI."""
        for action in self.actions:
            self.iface.removePluginMenu(
                self.tr(u'&SUEWS Converter'),
                action)
            self.iface.removeToolBarIcon(action)

    def folder_path_out(self):
        self.fileDialog.open()
        result = self.fileDialog.exec()
        if result == 1:
            self.folderPathOut = self.fileDialog.selectedFiles()
            file_path = self.folderPathOut[0]
            if not file_path.lower().endswith(".yml"):
                file_path += ".yml"
            self.dlg.textOutput.setText(file_path)

    def folder_path_in(self):
        self.fileDialognml.open()
        result = self.fileDialognml.exec()
        if result == 1:
            self.folderPathOut = self.fileDialognml.selectedFiles()
            self.dlg.textInput.setText(self.folderPathOut[0])

        # self.fileDialog.open()
        # result = self.fileDialog.exec_()
        # if result == 1:
        #     self.folderPathOut = self.fileDialog.selectedFiles()
        #     self.dlg.textInput.setText(self.folderPathOut[0])

    def run(self):
        """Run method that performs all the real work"""

        try:
            # from supy.util._converter import convert_table
            from supy.util.converter import convert_to_yaml
        except Exception as e:
            QMessageBox.critical(None, 'SUEWS Converter', 'This plugin requires the correct version of supy package to be installed OR upgraded. '
                                        'See Section 2.3 in the UMEP-manual for further information on how ' 
                                        'to install external python packages in QGIS3.')
            return

        # Create the dialog with elements (after translation) and keep reference
        # Only create GUI ONCE in callback, so that it will only load when the plugin is started
        if self.first_start == True:
            self.first_start = False

        # show the dialog
        self.dlg.show()
        # Run the dialog event loop
        self.dlg.exec()

    def help(self):
        url = 'https://umep-docs.readthedocs.io/en/latest/pre-processor/Urban%20Energy%20Balance%20SUEWS%20Converter.html'
        webbrowser.open_new_tab(url)

    def start_progress(self):
        try:
            from supy.util.converter import convert_to_yaml
        except:
            pass

        fromDir = self.dlg.textInput.text()
        toDir = self.dlg.textOutput.text()

        # fromDir = self.dlg.textInput.text().rstrip('RunControl.nml')
        # toDir = self.dlg.textOutput.text().rstrip('*.yml')
        # fromVer = self.dlg.comboBoxOld.currentText()
        # toVer = self.dlg.comboBoxNew.currentText()
        # print([fromDir + ',' + toDir + ',' + fromVer + ',' + toVer])
        try:
            # convert_table(fromDir, toDir, fromVer, toVer)
            convert_to_yaml(fromDir, toDir)
            self.iface.messageBar().pushMessage("SUEWS Converter", "Data successfully converted to lastest version",
                                                 level=Qgis.MessageLevel.Success)
            # self.iface.messageBar().pushMessage("SUEWS Converter", "Data successfully converted between: "
            #             + fromVer + " to " + toVer, level=Qgis.Success)
        except Exception as e:
            QMessageBox.critical(self.dlg, "An error occurred", str(e) + "\r\n\r\n"
                                "Check: " + str(list(Path.cwd().glob('SuPy.log'))[0]) + "\r\n\r\n"
                                "Please report any errors to https://github.com/UMEP-dev/UMEP/issues")
            return

