# -*- coding: utf-8 -*-

# Copyright (c) 2007 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a dialog to enter the URLs for the svn diff command.
"""


from PyQt5.QtCore import QRegExp, pyqtSlot
from PyQt5.QtWidgets import QDialog

from E5Gui.E5Application import e5App
from E5Gui import E5MessageBox

import pysvn

from .Ui_SvnUrlSelectionDialog import Ui_SvnUrlSelectionDialog

import Utilities


class SvnUrlSelectionDialog(QDialog, Ui_SvnUrlSelectionDialog):
    """
    Class implementing a dialog to enter the URLs for the svn diff command.
    """
    def __init__(self, vcs, tagsList, branchesList, path, parent=None):
        """
        Constructor
        
        @param vcs reference to the vcs object
        @param tagsList list of tags (list of strings)
        @param branchesList list of branches (list of strings)
        @param path pathname to determine the repository URL from (string)
        @param parent parent widget of the dialog (QWidget)
        """
        super(SvnUrlSelectionDialog, self).__init__(parent)
        self.setupUi(self)
        
        if not hasattr(pysvn.Client(), 'diff_summarize'):
            self.summaryCheckBox.setEnabled(False)
            self.summaryCheckBox.setChecked(False)
        
        self.vcs = vcs
        self.tagsList = tagsList
        self.branchesList = branchesList
        
        self.typeCombo1.addItems(["trunk/", "tags/", "branches/"])
        self.typeCombo2.addItems(["trunk/", "tags/", "branches/"])
        
        reposURL = self.vcs.svnGetReposName(path)
        if reposURL is None:
            E5MessageBox.critical(
                self,
                self.tr("Subversion Error"),
                self.tr(
                    """The URL of the project repository could not be"""
                    """ retrieved from the working copy. The operation will"""
                    """ be aborted"""))
            self.reject()
            return
        
        if self.vcs.otherData["standardLayout"]:
            # determine the base path of the project in the repository
            rx_base = QRegExp('(.+/)(trunk|tags|branches).*')
            if not rx_base.exactMatch(reposURL):
                E5MessageBox.critical(
                    self,
                    self.tr("Subversion Error"),
                    self.tr(
                        """The URL of the project repository has an"""
                        """ invalid format. The operation will"""
                        """ be aborted"""))
                self.reject()
                return
            
            reposRoot = rx_base.cap(1)
            self.repoRootLabel1.setText(reposRoot)
            self.repoRootLabel2.setText(reposRoot)
        else:
            project = e5App().getObject('Project')
            if (
                Utilities.normcasepath(path) !=
                Utilities.normcasepath(project.getProjectPath())
            ):
                path = project.getRelativePath(path)
                reposURL = reposURL.replace(path, '')
            self.repoRootLabel1.hide()
            self.typeCombo1.hide()
            self.labelCombo1.addItems([reposURL] + sorted(self.vcs.tagsList))
            self.labelCombo1.setEnabled(True)
            self.repoRootLabel2.hide()
            self.typeCombo2.hide()
            self.labelCombo2.addItems([reposURL] + sorted(self.vcs.tagsList))
            self.labelCombo2.setEnabled(True)
        
        msh = self.minimumSizeHint()
        self.resize(max(self.width(), msh.width()), msh.height())
        
    def __changeLabelCombo(self, labelCombo, type_):
        """
        Private method used to change the label combo depending on the
        selected type.
        
        @param labelCombo reference to the labelCombo object (QComboBox)
        @param type_ type string (string)
        """
        if type_ == "trunk/":
            labelCombo.clear()
            labelCombo.setEditText("")
            labelCombo.setEnabled(False)
        elif type_ == "tags/":
            labelCombo.clear()
            labelCombo.clearEditText()
            labelCombo.addItems(sorted(self.tagsList))
            labelCombo.setEnabled(True)
        elif type_ == "branches/":
            labelCombo.clear()
            labelCombo.clearEditText()
            labelCombo.addItems(sorted(self.branchesList))
            labelCombo.setEnabled(True)
        
    @pyqtSlot(str)
    def on_typeCombo1_currentIndexChanged(self, type_):
        """
        Private slot called when the selected type was changed.
        
        @param type_ selected type (string)
        """
        self.__changeLabelCombo(self.labelCombo1, type_)
        
    @pyqtSlot(str)
    def on_typeCombo2_currentIndexChanged(self, type_):
        """
        Private slot called when the selected type was changed.
        
        @param type_ selected type (string)
        """
        self.__changeLabelCombo(self.labelCombo2, type_)
        
    def getURLs(self):
        """
        Public method to get the entered URLs.
        
        @return tuple of list of two URL strings (list of strings) and
            a flag indicating a diff summary (boolean)
        """
        if self.vcs.otherData["standardLayout"]:
            url1 = (
                self.repoRootLabel1.text() +
                self.typeCombo1.currentText() +
                self.labelCombo1.currentText()
            )
            url2 = (
                self.repoRootLabel2.text() +
                self.typeCombo2.currentText() +
                self.labelCombo2.currentText()
            )
        else:
            url1 = self.labelCombo1.currentText()
            url2 = self.labelCombo2.currentText()
        
        return [url1, url2], self.summaryCheckBox.isChecked()
