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

# Copyright (c) 2003 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a dialog to enter the parameters for eric6_doc.
"""

from __future__ import unicode_literals

import sys
import os
import copy

from PyQt5.QtCore import pyqtSlot
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QColorDialog

from E5Gui.E5PathPicker import E5PathPickerModes

from .Ui_EricdocConfigDialog import Ui_EricdocConfigDialog
from DocumentationTools.Config import eric6docDefaultColors, \
    eric6docColorParameterNames
import Utilities

from eric6config import getConfig


class EricdocConfigDialog(QDialog, Ui_EricdocConfigDialog):
    """
    Class implementing a dialog to enter the parameters for eric6_doc.
    """
    def __init__(self, project, parms=None, parent=None):
        """
        Constructor
        
        @param project reference to the project object (Project.Project)
        @param parms parameters to set in the dialog
        @param parent parent widget of this dialog
        """
        super(EricdocConfigDialog, self).__init__(parent)
        self.setupUi(self)
        
        self.outputDirPicker.setMode(E5PathPickerModes.DirectoryMode)
        self.outputDirPicker.setDefaultDirectory(project.getProjectPath())
        
        self.ignoreDirPicker.setMode(E5PathPickerModes.DirectoryMode)
        self.ignoreDirPicker.setDefaultDirectory(project.getProjectPath())
        
        self.cssPicker.setMode(E5PathPickerModes.OpenFileMode)
        self.cssPicker.setDefaultDirectory(getConfig('ericCSSDir'))
        self.cssPicker.setFilters(self.tr(
            "Style sheet (*.css);;All files (*)"))
        
        self.qtHelpDirPicker.setMode(E5PathPickerModes.DirectoryMode)
        self.qtHelpDirPicker.setDefaultDirectory(project.getProjectPath())
        
        self.__okButton = self.buttonBox.button(QDialogButtonBox.Ok)
        
        self.__initializeDefaults()
        
        self.sampleText = self.tr(
            '''<?xml version="1.0" encoding="utf-8"?>'''
            '''<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"'''
            '''"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'''
            '''<html><head>'''
            '''<title></title>'''
            '''</head>'''
            '''<body style="background-color:{BodyBgColor};'''
            '''color:{BodyColor}">'''
            '''<h1 style="background-color:{Level1HeaderBgColor};'''
            '''color:{Level1HeaderColor}">'''
            '''Level 1 Header</h1>'''
            '''<h3 style="background-color:{Level2HeaderBgColor};'''
            '''color:{Level2HeaderColor}">'''
            '''Level 2 Header</h3>'''
            '''<h2 style="background-color:{CFBgColor};color:{CFColor}">'''
            '''Class and Function Header</h2>'''
            '''Standard body text with '''
            '''<a style="color:{LinkColor}">some links</a> embedded.'''
            '''</body></html>'''
        )
        
        # get a copy of the defaults to store the user settings
        self.parameters = copy.deepcopy(self.defaults)
        self.colors = eric6docDefaultColors.copy()
        
        # combine it with the values of parms
        if parms is not None:
            for key in parms:
                if key.endswith("Color"):
                    self.colors[key] = parms[key]
                else:
                    self.parameters[key] = parms[key]
        self.parameters['outputDirectory'] = \
            Utilities.toNativeSeparators(self.parameters['outputDirectory'])
        self.parameters['qtHelpOutputDirectory'] = \
            Utilities.toNativeSeparators(
                self.parameters['qtHelpOutputDirectory'])
        self.parameters['cssFile'] = \
            Utilities.toNativeSeparators(self.parameters['cssFile'])
        if self.parameters['cssFile'].startswith("%PYTHON%"):
            self.parameters['cssFile'] = self.parameters['cssFile'].replace(
                "%PYTHON%", Utilities.getPythonModulesDirectory())
        
        self.ppath = project.getProjectPath()
        self.project = project
        
        self.recursionCheckBox.setChecked(self.parameters['useRecursion'])
        self.noindexCheckBox.setChecked(self.parameters['noindex'])
        self.noemptyCheckBox.setChecked(self.parameters['noempty'])
        self.outputDirPicker.setText(self.parameters['outputDirectory'])
        self.ignoreDirsList.clear()
        for d in self.parameters['ignoreDirectories']:
            self.ignoreDirsList.addItem(d)
        self.cssPicker.setText(self.parameters['cssFile'])
        self.sourceExtEdit.setText(
            ", ".join(self.parameters['sourceExtensions']))
        self.excludeFilesEdit.setText(
            ", ".join(self.parameters['ignoreFilePatterns']))
        self.sample.setHtml(self.sampleText.format(**self.colors))
        
        self.qtHelpGroup.setChecked(self.parameters['qtHelpEnabled'])
        self.qtHelpDirPicker.setText(self.parameters['qtHelpOutputDirectory'])
        self.qtHelpNamespaceEdit.setText(self.parameters['qtHelpNamespace'])
        self.qtHelpFolderEdit.setText(self.parameters['qtHelpVirtualFolder'])
        self.qtHelpFilterNameEdit.setText(self.parameters['qtHelpFilterName'])
        self.qtHelpFilterAttributesEdit.setText(
            self.parameters['qtHelpFilterAttributes'])
        self.qtHelpTitleEdit.setText(self.parameters['qtHelpTitle'])
        self.qtHelpGenerateCollectionCheckBox.setChecked(
            self.parameters['qtHelpCreateCollection'])
    
    def __initializeDefaults(self):
        """
        Private method to set the default values.
        
        These are needed later on to generate the commandline
        parameters.
        """
        self.defaults = {
            'useRecursion': False,
            'noindex': False,
            'noempty': False,
            'outputDirectory': '',
            'ignoreDirectories': [],
            'ignoreFilePatterns': [],
            'cssFile': '',
            'sourceExtensions': [],
            
            'qtHelpEnabled': False,
            'qtHelpOutputDirectory': '',
            'qtHelpNamespace': '',
            'qtHelpVirtualFolder': 'source',
            'qtHelpFilterName': 'unknown',
            'qtHelpFilterAttributes': '',
            'qtHelpTitle': '',
            'qtHelpCreateCollection': False,
        }
    
    def generateParameters(self):
        """
        Public method that generates the commandline parameters.
        
        It generates a list of strings to be used
        to set the QProcess arguments for the ericdoc call and
        a dictionary containing the non default parameters. This
        dictionary can be passed back upon object generation to overwrite
        the default settings.
        
        @return a tuple of the commandline parameters and non default
            parameters (list of strings, dictionary)
        """
        parms = {}
        args = []
        
        # 1. the program name
        args.append(sys.executable)
        args.append(
            Utilities.normabsjoinpath(getConfig('ericDir'), "eric6_doc.py"))
        
        # 2. the commandline options
        # 2a. general commandline options
        if self.parameters['outputDirectory'] != \
                self.defaults['outputDirectory']:
            parms['outputDirectory'] = Utilities.fromNativeSeparators(
                self.project.getRelativePath(
                    self.parameters['outputDirectory']))
            args.append('-o')
            if os.path.isabs(self.parameters['outputDirectory']):
                args.append(self.parameters['outputDirectory'])
            else:
                args.append(os.path.join(
                    self.ppath, self.parameters['outputDirectory']))
        else:
            self.parameters['outputDirectory'] = \
                self.defaults['outputDirectory']
            parms['outputDirectory'] = self.parameters['outputDirectory']
        if self.parameters['ignoreDirectories'] != \
                self.defaults['ignoreDirectories']:
            parms['ignoreDirectories'] = \
                self.parameters['ignoreDirectories'][:]
            for d in self.parameters['ignoreDirectories']:
                args.append('-x')
                args.append(d)
        if self.parameters['ignoreFilePatterns'] != \
                self.defaults['ignoreFilePatterns']:
            parms['ignoreFilePatterns'] = \
                self.parameters['ignoreFilePatterns'][:]
            for pattern in self.parameters['ignoreFilePatterns']:
                if pattern.strip():
                    args.append("--exclude-file={0}".format(pattern.strip()))
        if self.parameters['useRecursion'] != self.defaults['useRecursion']:
            parms['useRecursion'] = self.parameters['useRecursion']
            args.append('-r')
        if self.parameters['noindex'] != self.defaults['noindex']:
            parms['noindex'] = self.parameters['noindex']
            args.append('-i')
        if self.parameters['noempty'] != self.defaults['noempty']:
            parms['noempty'] = self.parameters['noempty']
            args.append('-e')
        if self.parameters['sourceExtensions'] != \
                self.defaults['sourceExtensions']:
            parms['sourceExtensions'] = self.parameters['sourceExtensions'][:]
            for ext in self.parameters['sourceExtensions']:
                if ext.strip():
                    args.append("--extension={0}".format(ext.strip()))
        
        # 2b. style commandline options
        if self.parameters['cssFile'] != self.defaults['cssFile']:
            cssFile = self.project.getRelativePath(self.parameters['cssFile'])
            if cssFile.startswith(Utilities.getPythonModulesDirectory()):
                cssFile = cssFile.replace(
                    Utilities.getPythonModulesDirectory(), "%PYTHON%")
            parms['cssFile'] = Utilities.fromNativeSeparators(cssFile)
            args.append('-c')
            if os.path.isabs(self.parameters['cssFile']):
                args.append(self.parameters['cssFile'])
            else:
                args.append(
                    os.path.join(self.ppath, self.parameters['cssFile']))
        for key in self.colors:
            if self.colors[key] != eric6docDefaultColors[key]:
                parms[key] = self.colors[key]
                args.append("--{0}={1}".format(
                    eric6docColorParameterNames[key], self.colors[key]))
        
        # 2c. QtHelp commandline options
        parms['qtHelpEnabled'] = self.parameters['qtHelpEnabled']
        if self.parameters['qtHelpEnabled']:
            args.append('--create-qhp')
        if self.parameters['qtHelpOutputDirectory'] != \
           self.defaults['qtHelpOutputDirectory']:
            parms['qtHelpOutputDirectory'] = Utilities.fromNativeSeparators(
                self.project.getRelativePath(
                    self.parameters['qtHelpOutputDirectory']))
            if os.path.isabs(self.parameters['outputDirectory']):
                args.append("--qhp-outdir={0}".format(
                    self.parameters['qtHelpOutputDirectory']))
            else:
                args.append("--qhp-outdir={0}".format(
                    os.path.join(self.ppath,
                                 self.parameters['qtHelpOutputDirectory'])))
        if self.parameters['qtHelpNamespace'] != \
                self.defaults['qtHelpNamespace']:
            parms['qtHelpNamespace'] = self.parameters['qtHelpNamespace']
            args.append("--qhp-namespace={0}".format(
                self.parameters['qtHelpNamespace']))
        if self.parameters['qtHelpVirtualFolder'] != \
                self.defaults['qtHelpVirtualFolder']:
            parms['qtHelpVirtualFolder'] = \
                self.parameters['qtHelpVirtualFolder']
            args.append("--qhp-virtualfolder={0}".format(
                self.parameters['qtHelpVirtualFolder']))
        if self.parameters['qtHelpFilterName'] != \
                self.defaults['qtHelpFilterName']:
            parms['qtHelpFilterName'] = self.parameters['qtHelpFilterName']
            args.append("--qhp-filtername={0}".format(
                self.parameters['qtHelpFilterName']))
        if self.parameters['qtHelpFilterAttributes'] != \
           self.defaults['qtHelpFilterAttributes']:
            parms['qtHelpFilterAttributes'] = \
                self.parameters['qtHelpFilterAttributes']
            args.append("--qhp-filterattribs={0}".format(
                self.parameters['qtHelpFilterAttributes']))
        if self.parameters['qtHelpTitle'] != self.defaults['qtHelpTitle']:
            parms['qtHelpTitle'] = self.parameters['qtHelpTitle']
            args.append("--qhp-title={0}".format(
                self.parameters['qtHelpTitle']))
        if self.parameters['qtHelpCreateCollection'] != \
           self.defaults['qtHelpCreateCollection']:
            parms['qtHelpCreateCollection'] = \
                self.parameters['qtHelpCreateCollection']
            args.append('--create-qhc')
        
        return (args, parms)
    
    @pyqtSlot(str)
    def on_outputDirPicker_pathSelected(self, path):
        """
        Private slot handling the selection of an output directory.
        
        @param path path of the output directory
        @type str
        """
        # make it relative, if it is in a subdirectory of the project path
        dn = self.project.getRelativePath(path)
        while dn.endswith(os.sep):
            dn = dn[:-1]
        self.outputDirPicker.setText(dn)
    
    @pyqtSlot(str)
    def on_ignoreDirPicker_pathSelected(self, path):
        """
        Private slot handling the selection of a directory to be ignored.
        
        @param path path of the directory to be ignored
        @type str
        """
        # make it relative, if it is in a subdirectory of the project path
        dn = self.project.getRelativePath(path)
        while dn.endswith(os.sep):
            dn = dn[:-1]
        self.ignoreDirPicker.setText(dn)

    @pyqtSlot()
    def on_addButton_clicked(self):
        """
        Private slot to add the directory displayed to the listview.
        
        The directory in the ignore directories
        line edit is moved to the listbox above and the edit is cleared.
        """
        basename = os.path.basename(self.ignoreDirPicker.text())
        if basename:
            self.ignoreDirsList.addItem(basename)
            self.ignoreDirPicker.clear()

    @pyqtSlot()
    def on_deleteButton_clicked(self):
        """
        Private slot to delete the currently selected directory of the listbox.
        """
        itm = self.ignoreDirsList.takeItem(self.ignoreDirsList.currentRow())
        del itm
    
    @pyqtSlot(str)
    def on_cssPicker_pathSelected(self, path):
        """
        Private slot handling the selection of a css style sheet.
        
        @param path path of the css style sheet
        @type str
        """
        # make it relative, if it is in a subdirectory of the project path
        cf = self.project.getRelativePath(path)
        self.cssPicker.setText(cf)

    def __selectColor(self, colorKey):
        """
        Private method to select a color.
        
        @param colorKey key of the color to select (string)
        """
        color = QColorDialog.getColor(QColor(self.colors[colorKey]))
        if color.isValid():
            self.colors[colorKey] = color.name()
            self.sample.setHtml(self.sampleText.format(self.colors))

    @pyqtSlot()
    def on_bodyFgButton_clicked(self):
        """
        Private slot to select the body foreground color.
        """
        self.__selectColor('BodyColor')
    
    @pyqtSlot()
    def on_bodyBgButton_clicked(self):
        """
        Private slot to select the body background color.
        """
        self.__selectColor('BodyBgColor')
    
    @pyqtSlot()
    def on_l1FgButton_clicked(self):
        """
        Private slot to select the level 1 header foreground color.
        """
        self.__selectColor('Level1HeaderColor')
    
    @pyqtSlot()
    def on_l1BgButton_clicked(self):
        """
        Private slot to select the level 1 header background color.
        """
        self.__selectColor('Level1HeaderBgColor')
    
    @pyqtSlot()
    def on_l2FgButton_clicked(self):
        """
        Private slot to select the level 2 header foreground color.
        """
        self.__selectColor('Level2HeaderColor')
    
    @pyqtSlot()
    def on_l2BgButton_clicked(self):
        """
        Private slot to select the level 2 header background color.
        """
        self.__selectColor('Level2HeaderBgColor')
    
    @pyqtSlot()
    def on_cfFgButton_clicked(self):
        """
        Private slot to select the class/function header foreground color.
        """
        self.__selectColor('CFColor')
    
    @pyqtSlot()
    def on_cfBgButton_clicked(self):
        """
        Private slot to select the class/function header background color.
        """
        self.__selectColor('CFBgColor')
    
    @pyqtSlot()
    def on_linkFgButton_clicked(self):
        """
        Private slot to select the foreground color of links.
        """
        self.__selectColor('LinkColor')
    
    def __checkQtHelpOptions(self):
        """
        Private slot to check the QtHelp options and set the ok button
        accordingly.
        """
        setOn = True
        if self.qtHelpGroup.isChecked():
            if not self.qtHelpNamespaceEdit.text():
                setOn = False
            if not self.qtHelpFolderEdit.text():
                setOn = False
            else:
                if '/' in self.qtHelpFolderEdit.text():
                    setOn = False
            if not self.qtHelpTitleEdit.text():
                setOn = False
        
        self.__okButton.setEnabled(setOn)
    
    @pyqtSlot(bool)
    def on_qtHelpGroup_toggled(self, enabled):
        """
        Private slot to toggle the generation of QtHelp files.
        
        @param enabled flag indicating the state (boolean)
        """
        self.__checkQtHelpOptions()
    
    @pyqtSlot(str)
    def on_qtHelpNamespaceEdit_textChanged(self, txt):
        """
        Private slot to check the namespace.
        
        @param txt text of the line edit (string)
        """
        self.__checkQtHelpOptions()
    
    @pyqtSlot(str)
    def on_qtHelpFolderEdit_textChanged(self, txt):
        """
        Private slot to check the virtual folder.
        
        @param txt text of the line edit (string)
        """
        self.__checkQtHelpOptions()
    
    @pyqtSlot(str)
    def on_qtHelpTitleEdit_textChanged(self, txt):
        """
        Private slot to check the title.
        
        @param txt text of the line edit (string)
        """
        self.__checkQtHelpOptions()
    
    @pyqtSlot(str)
    def on_qtHelpDirPicker_pathSelected(self, path):
        """
        Private slot handling the selection of the output directory for the
        QtHelp files.
        
        @param path path of the the output directory for the QtHelp files
        @type str
        """
        # make it relative, if it is in a subdirectory of the project path
        dn = self.project.getRelativePath(path)
        while dn.endswith(os.sep):
            dn = dn[:-1]
        self.qtHelpDirPicker.setText(dn)
    
    def accept(self):
        """
        Public slot called by the Ok button.
        
        It saves the values in the parameters dictionary.
        """
        self.parameters['useRecursion'] = self.recursionCheckBox.isChecked()
        self.parameters['noindex'] = self.noindexCheckBox.isChecked()
        self.parameters['noempty'] = self.noemptyCheckBox.isChecked()
        outdir = self.outputDirPicker.text()
        if outdir != '':
            outdir = os.path.normpath(outdir)
            if outdir.endswith(os.sep):
                outdir = outdir[:-1]
        self.parameters['outputDirectory'] = outdir
        self.parameters['ignoreDirectories'] = []
        for row in range(0, self.ignoreDirsList.count()):
            itm = self.ignoreDirsList.item(row)
            self.parameters['ignoreDirectories'].append(
                os.path.normpath(itm.text()))
        cssFile = self.cssPicker.text()
        if cssFile != '':
            cssFile = os.path.normpath(cssFile)
        self.parameters['cssFile'] = cssFile
        extensions = self.sourceExtEdit.text().split(',')
        self.parameters['sourceExtensions'] = \
            [ext.strip() for ext in extensions if ext.strip()]
        patterns = self.excludeFilesEdit.text().split(',')
        self.parameters['ignoreFilePatterns'] = \
            [pattern.strip() for pattern in patterns if pattern.strip()]
        
        self.parameters['qtHelpEnabled'] = self.qtHelpGroup.isChecked()
        self.parameters['qtHelpOutputDirectory'] = self.qtHelpDirPicker.text()
        self.parameters['qtHelpNamespace'] = self.qtHelpNamespaceEdit.text()
        self.parameters['qtHelpVirtualFolder'] = self.qtHelpFolderEdit.text()
        self.parameters['qtHelpFilterName'] = self.qtHelpFilterNameEdit.text()
        self.parameters['qtHelpFilterAttributes'] = \
            self.qtHelpFilterAttributesEdit.text()
        self.parameters['qtHelpTitle'] = self.qtHelpTitleEdit.text()
        self.parameters['qtHelpCreateCollection'] = \
            self.qtHelpGenerateCollectionCheckBox.isChecked()
        
        # call the accept slot of the base class
        super(EricdocConfigDialog, self).accept()
