#!/usr/bin/env python3
"""
project: Backuppy
version: 0.9
file: install_gui.py
summary: python installer-script in GUI-mode (needs PySide2)
"""

# Standard library imports
import os

# Third party imports
from PySide2 import QtWidgets

# local imports
from install import EXCLUDE_FILE, EMAIL
from utils import set_language, get_lang_text, LANG_EN, LANG_DE

class BackuppyWizard(QtWidgets.QWizard):
    def __init__(self, parent=None, mydir=os.getcwd(), exclude_file=EXCLUDE_FILE):
        super().__init__(parent)

        # init instance variables
        self.mydir = mydir
        self.exclude_file = exclude_file
        self.exclude = None
        self.sourcedir = None
        self.targetdir = None
        self.rsync_cmd = None

        self.setWindowTitle(get_lang_text("intromsg1"))

        self.addPage(Page01(self))
        self.addPage(Page02(self))
        self.addPage(Page03(self))
        self.addPage(Page04(self))
        self.addPage(Page05(self))
        self.addPage(Page06(self))
        self.addPage(Page07(self))
        self.addPage(Page08(self))
        self.addPage(Page09(self))
        self.addPage(Page10(self))

        self.resize(640, 480)


class Page01(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.label = QtWidgets.QLabel(get_lang_text("welcome"))

        self.comboBox = QtWidgets.QComboBox(self)
        self.comboBox.addItem(LANG_EN)
        self.comboBox.addItem(LANG_DE)

        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label)
        layout.addWidget(self.comboBox)
        self.setLayout(layout)

    def validatePage(self):
        set_language(self.comboBox.currentText())

        return True


class Page02(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()

        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)
        self.setLayout(layout)

    def initializePage(self):
        self.setWindowTitle(get_lang_text("intromsg1"))

        self.label1.setText(get_lang_text("languagepack"))
        self.label2.setText(get_lang_text("intromsg2"))


class Page03(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label = QtWidgets.QLabel()
        self.groupbox = QtWidgets.QGroupBox()
        self.groupbox.setFlat(True)
        self.radio1 = QtWidgets.QRadioButton()
        self.radio2 = QtWidgets.QRadioButton()

        vbox = QtWidgets.QVBoxLayout()
        vbox.addWidget(self.radio1)
        vbox.addWidget(self.radio2)    
        vbox.addStretch(1)
        self.groupbox.setLayout(vbox)

        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label)
        layout.addWidget(self.groupbox)
        self.setLayout(layout)

    def initializePage(self):
        self.label.setText(get_lang_text("excludefile1"))
        self.radio1.setText(get_lang_text("Yes"))
        self.radio2.setText(get_lang_text("No"))
        self.radio1.setChecked(True)

    def validatePage(self):
        if self.radio1.isChecked():
            self.parent.exclude = True
        else:
            self.parent.exclude = False
        return True


class Page04(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label = QtWidgets.QLabel()
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label)
        self.setLayout(layout)

    def initializePage(self):
        if self.parent.exclude:
            self.label.setText(get_lang_text("excludefile2"))
        else:
            self.label.setText(get_lang_text("excludefile3"))

class Page05(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()
        self.efSourceDir = QtWidgets.QLineEdit()
        self.pbBrowse = QtWidgets.QPushButton("Browse")
        self.pbBrowse.clicked.connect(self.on_pbBrowse_clicked)
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)

        hLayout = QtWidgets.QHBoxLayout()
        hLayout.addWidget(self.efSourceDir)
        hLayout.addWidget(self.pbBrowse)

        layout.addLayout(hLayout)

        self.setLayout(layout)

    def initializePage(self):
        self.label1.setText(get_lang_text("srcdir1"))
        self.label2.setText(get_lang_text("srcdir2"))

    def on_pbBrowse_clicked(self):
        options = QtWidgets.QFileDialog.Options() | QtWidgets.QFileDialog.ShowDirsOnly
        dirName = QtWidgets.QFileDialog.getExistingDirectory(self, "Select Directory", None, options)
        self.efSourceDir.setText(dirName)

    def validatePage(self):
        self.parent.sourcedir = self.efSourceDir.text()

        return True


class Page06(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()
        self.label3 = QtWidgets.QLabel()
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)
        layout.addWidget(self.label3)
        self.setLayout(layout)

    def initializePage(self):
        self.label1.setText(get_lang_text("srcdir3_1"))
        bold_text = f"<p><strong>{self.parent.sourcedir}</strong></p>" 
        self.label2.setText(bold_text)
        self.label3.setText(get_lang_text("srcdir3_2"))


class Page07(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label1 = QtWidgets.QLabel()
        self.efTargetDir = QtWidgets.QLineEdit()
        self.pbBrowse = QtWidgets.QPushButton("Browse")
        self.pbBrowse.clicked.connect(self.on_pbBrowse_clicked)
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)

        hLayout = QtWidgets.QHBoxLayout()
        hLayout.addWidget(self.efTargetDir)
        hLayout.addWidget(self.pbBrowse)

        layout.addLayout(hLayout)

        self.setLayout(layout)

    def initializePage(self):
        self.label1.setText(get_lang_text("targetdir1"))

    def on_pbBrowse_clicked(self):
        options = QtWidgets.QFileDialog.Options() | QtWidgets.QFileDialog.ShowDirsOnly
        dirName = QtWidgets.QFileDialog.getExistingDirectory(self, "Select Directory", None, options)
        self.efTargetDir.setText(dirName)

    def validatePage(self):
        self.parent.targetdir = self.efTargetDir.text()

        return True


class Page08(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()
        self.label3 = QtWidgets.QLabel()
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)
        layout.addWidget(self.label3)
        self.setLayout(layout)

    def initializePage(self):
        self.label1.setText(get_lang_text("targetdir2_1"))
        bold_text = f"<p><strong>{self.parent.targetdir}</strong></p>" 
        self.label2.setText(bold_text)
        self.label3.setText(get_lang_text("targetdir2_2"))

    def validatePage(self):
        exclude_file = os.path.join(self.parent.mydir, self.parent.exclude_file)

        self.parent.rsync_cmd = f"rsync -aqp --exclude-from={exclude_file} {self.parent.sourcedir} {self.parent.targetdir}"

        return True


class Page09(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.parent = parent

        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)
        self.setLayout(layout)

    def initializePage(self):
        self.label1.setText(get_lang_text("collect"))
        bold_text = f"<p><strong>{self.parent.rsync_cmd}</strong></p>" 
        self.label2.setText(bold_text)


class Page10(QtWidgets.QWizardPage):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.label1 = QtWidgets.QLabel()
        self.label2 = QtWidgets.QLabel()
        self.label3 = QtWidgets.QLabel()
        layout = QtWidgets.QVBoxLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.label2)
        layout.addWidget(self.label3)
        self.setLayout(layout)

        self.setFinalPage(True)

    def initializePage(self):
        self.label1.setText(get_lang_text("outro1"))
        self.label2.setText(get_lang_text("outro2"))
        global EMAIL
        urlLink = f"<a href='mailto: {EMAIL}'>{EMAIL}</a>" 
        self.label3.setText(urlLink)
        self.label3.setOpenExternalLinks(True)

    def validatePage(self):
        return True


def main_install_gui(mydir, exclude_file):
    app = QtWidgets.QApplication()
    wizard = BackuppyWizard(parent=None, mydir=mydir, exclude_file=exclude_file)
    wizard.show()

    app.exec_()

    return True, wizard.exclude, wizard.rsync_cmd

if __name__ == '__main__':
    is_finalized, is_exclude, rsync_cmd = main_install_gui(mydir=os.getcwd(), exclude_file=EXCLUDE_FILE)