#!/usr/bin/env python3
#############################################################################
##
## Copyright (C) 2010 Hans-Peter Jansen <hpj@urpla.net>.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
##   * Redistributions of source code must retain the above copyright
##     notice, this list of conditions and the following disclaimer.
##   * Redistributions in binary form must reproduce the above copyright
##     notice, this list of conditions and the following disclaimer in
##     the documentation and/or other materials provided with the
##     distribution.
##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
##     the names of its contributors may be used to endorse or promote
##     products derived from this software without specific prior written
##     permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
###########################################################################

import os
import sys
import traceback
from PyQt5 import uic
from PyQt5.QtCore import pyqtSlot, QFile, QTextStream
from PyQt5.QtWidgets import (QApplication, QDialog)

import gcode
from qt5_graphics import Lcnc_3dGraphics
from qtvcp.core import Info, Path, Action

from qtvcp import logger
LOG = logger.getLogger(__name__)
#LOG = logger.initBaseLogger('QTvcp1', log_file=None, log_level=logger.DEBUG)

INFO = Info()
PATH = Path()
ACTION = Action()
DATADIR = os.path.abspath( os.path.dirname( __file__ ) )

class NurbsEditor(QDialog):
    def __init__(self, parent=None, path=None):
        super(NurbsEditor, self).__init__(parent)
        self.setMinimumSize(500, 500)
        self.bluck_update = True

        # Load the widgets UI file:
        self.filename = os.path.join(INFO.LIB_PATH,'widgets_ui', 'nurbs_editor.ui')
        try:
            self.instance = uic.loadUi(self.filename, self)
        except AttributeError as e:
            #exc_type, exc_value, exc_traceback = sys.exc_info()
            formatted_lines = traceback.format_exc().splitlines()
            print()
            print("Ui loadinr error",formatted_lines[0])
            #traceback.print_tb(exc_traceback, limit=1, file=sys.stdout)
            print(formatted_lines[-1])
            if 'slotname' in formatted_lines[-2]:
                LOG.critical('Missing slot name {}'.format(e))
            else:
                LOG.critical(e)

        self.setWindowTitle('NurbsEditor Dialog');


        self.workpath = os.path.join( "/tmp/LINUXCNCtempWork.ngc")
        self.emptypath = os.path.join( "/tmp/LINUXCNCtempEmpty.ngc")

        emptyfile = open(self.emptypath, "w")
        print(("m2"), file=emptyfile)
        emptyfile.close()

        self.set_spinbuttons_default()
        self.graphics = Lcnc_3dGraphics()

        self.setGraphicsDisplay()
        self.main.addWidget(self.graphics)
        self.updateDisplay(self.emptypath)
        self.update()

    def setGraphicsDisplay(self):
        # class patch to catch gcode errors - in theory
        self.graphics.report_gcode_error = self.report_gcode_error
        # reset trverse color so other displays don;t change
        self.defaultColor = self.graphics.colors['traverse']
        self.graphics.current_view = 'z'
        self.graphics.metric_units = INFO.MACHINE_IS_METRIC
        self.graphics.use_gradient_background = True
        self.graphics.show_tool = False
        self.graphics.grid_size = 2
        self.graphics.cancel_rotate = True

    def set_spinbuttons_default(self):
        self.use_ctrl1.setChecked(True)
        self.use_ctrl2.setChecked(True)
        self.use_ctrl3.setChecked(True)
        self.use_ctrl4.setChecked(True)

        self.x1.setValue(3.53)
        self.x2.setValue(5.53)
        self.x3.setValue(3.52)
        self.x4.setValue(0)

        self.y1.setValue(-1.50)
        self.y2.setValue(-11.01)
        self.y3.setValue(-24.00)
        self.y4.setValue(-29.56)

        self.w1.setValue(2)
        self.w2.setValue(1)
        self.w3.setValue(1)
        self.w4.setValue(1)
        self.gridSpace.setValue(2)

        self.unblock()

    def checkChanged(self):
        c = 0
        for i in range(1,8):
            u = 'use_ctrl{}'.format(i)
            if self[u].isChecked(): c +=1
        if c < 2:
            self.sender().setChecked(True)
        elif not self.bluck_update:
            self.update()

    def spinChanged(self,data):
        if self.bluck_update: return
        self.update()

    def gridSpinChanged(self):
        if self.bluck_update: return
        self.graphics.grid_size = self.gridSpace.value()
        self.graphics.updateGL()

    def block(self):
        self.bluck_update = True
    def unblock(self):
        self.bluck_update = False

    def invertX(self):
        self.block()
        for i in range(1,8):
            X = 'x{}'.format(i)
            self[X].setValue(self[X].value() * -1)
        self.rapidX.setValue(self.rapidX.value() * -1)
        self.unblock()
        self.update()

    def invertY(self):
        self.block()
        for i in range(1,8):
            Y = 'y{}'.format(i)
            self[Y].setValue(self[Y].value() * -1)
        self.rapidY.setValue(self.rapidY.value() * -1)
        self.unblock()
        self.update()

    def resetView(self):
        self.graphics.set_current_view()

    def update(self):
        self.graphics.colors['traverse'] = (0.0, 1.0, 0.0)
        self.workfile = open(self.workpath, "w")

        ###############################
        # Setup
        ###############################
        t = self.toolNum.value()
        if t:
            print(('T{} M6 G43').format(self.toolNum.value()), file=self.workfile)
        print(('( Starting position )'), file=self.workfile)
        print(('G0 X {} Y {} Z {}').format(self.rapidX.value(),self.rapidY.value(),self.rapidZ.value()), file=self.workfile)

        ###############################
        # Nurbs block
        ###############################
        print((''), file=self.workfile)
        print(('( Nurbs block )'), file=self.workfile)
        f = self.feedRate.value()
        if f:
            print(('F{}').format(self.feedRate.value()), file=self.workfile)
        #print >> self.workfile, ('F')
        print(('G5.2'), file=self.workfile)
        for i in range(1,8):
            u = 'use_ctrl{}'.format(i)
            X = 'x{}'.format(i)
            Y = 'y{}'.format(i)
            P = 'w{}'.format(i)
            if self[u].isChecked():
                print(('X {} Y {} P {}').format(self[X].value(),self[Y].value(),self[P].value()), file=self.workfile)
        print(('G5.3'), file=self.workfile)

        ##############################
        # rapids to show boundary
        ##############################
        print((''), file=self.workfile)
        print(('( Show control points with rapid lines )'), file=self.workfile)
        print(('G0 X {} Y {} Z {}').format(self.rapidX.value(),self.rapidY.value(),self.rapidZ.value()), file=self.workfile)
        for i in range(1,8):
            u = 'use_ctrl{}'.format(i)
            X = 'x{}'.format(i)
            Y = 'y{}'.format(i)
            if self[u].isChecked():
                print(('G0 X{} y{}').format(self[X].value(),self[Y].value()), file=self.workfile)

        ##############################
        # cleanup
        ##############################
        print(('m2'), file=self.workfile)

        self.workfile.close()
        self.updateDisplay(self.workpath)
        self.graphics.colors['traverse'] = self.defaultColor

    def finalizeGcode(self):
        gcode = self.gcodeText.toPlainText()
        file = QFile(self.workpath)
        if file.open(QFile.WriteOnly):
            QTextStream(file) << gcode

    def updateDisplay(self,fn):
        self.graphics.load(fn)

    def load_dialog(self):
        #self.updateDisplay(self.emptypath)
        self.graphics.current_view = 'z'
        self.show() # must be realized before view will change
        self.graphics.set_current_view()
        #self.activateWindow()

    @pyqtSlot()
    def on_makeButton_clicked(self):
        print('make')
        file = QFile(self.workpath)
        file.open(QFile.ReadOnly)
        gcode = file.readAll()
        try:
            # Python v2.
            gcode = str(gcode, encoding='utf8')
        except NameError:
            # Python v3.
            gcode = str(gcode, encoding='utf8')
        self.gcodeText.setPlainText(gcode)

    @pyqtSlot()
    def on_applyButton_clicked(self):
        self.finalizeGcode()
        ACTION.OPEN_PROGRAM(self.workpath)

    @pyqtSlot()
    def on_closeButton_clicked(self):
        self.close()

    def __getitem__(self, item):
        return getattr(self, item)
    def __setitem__(self, item, value):
        return setattr(self, item, value)


###############
# class patch
############
    def report_gcode_error(self, result, seq, filename):
        error_str = gcode.strerror(result)
        errortext = "G-Code error in " + os.path.basename(filename) + "\n" + "Near line " \
                    + str(seq) + " of\n" + filename + "\n" + error_str + "\n"
        print(errortext)

###########
# Testing
###########
if __name__ == '__main__':

    app = QApplication(sys.argv)
    if len(sys.argv) == 1:
        inifilename = None
    elif len(sys.argv) == 2:
        inifilename = sys.argv[1]
    else:
        sys.exit(1)
    window = NurbsEditor(path = inifilename)
    window.load_dialog()
    sys.exit(app.exec_())