# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2021 Thomas Krijnen <thomas@aecgeeks.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.

import logging
import sys
from code import InteractiveConsole

from PyQt5 import QtCore, QtGui, QtWidgets

try:
    from PyQt5 import QtWidgets
except BaseException:
    QtWidgets = QtGui

try:
    from pyqode.core import api, modes, panels
    from pyqode.core.api import CodeEdit
    from pyqode.python import modes as pymodes
    from pyqode.python import panels as pypanels
    from pyqode.python.backend import server
    from pyqode.python.modes import PythonSH

    has_pyqode = True
except BaseException:
    has_pyqode = False
    CodeEdit = QtWidgets.QPlainTextEdit


class StdoutRedirector:
    """A class for redirecting stdout to this Text widget."""

    def __init__(self, widget):
        self.widget = widget
        self.isError = False

    def write(self, myStr):
        self.widget.moveCursor(QtGui.QTextCursor.End)
        if self.isError:
            self.widget.setTextColor(QtCore.Qt.red)
        else:
            self.widget.setTextColor(QtCore.Qt.white)
        self.widget.insertPlainText(myStr)
        self.widget.moveCursor(QtGui.QTextCursor.End)


class code_edit(QtWidgets.QWidget):
    class Console(InteractiveConsole):
        def __init__(*args):
            InteractiveConsole.__init__(*args)

        def enter(self, source):
            self.runcode(source)

    def runCode(self):
        sys.stdout = StdoutRedirector(self.output)
        sys.stderr = StdoutRedirector(self.output)
        sys.stderr.isError = True

        if not self.model:
            print("please load a model first", file=sys.stderr)
        else:
            self.c.enter(str(self.editor.toPlainText()))

        sys.stdout = sys.__stdout__
        sys.stderr = sys.__stderr__

    def select(self, product):
        self.c = self.Console({"model": self.model, "viewer": self.viewer, "selection": product})

    def __init__(self, viewer, snippets=None):
        self.model = None
        self.viewer = viewer
        QtWidgets.QWidget.__init__(self)
        self.layout = QtWidgets.QVBoxLayout(self)
        self.setLayout(self.layout)
        self.c = None
        self.tools = QtWidgets.QHBoxLayout(self)
        self.layout.addLayout(self.tools)
        self.runbutton = QtWidgets.QPushButton("Run")
        width = self.runbutton.fontMetrics().boundingRect("Run").width() + 20
        self.runbutton.setMaximumWidth(width)
        self.tools.addWidget(self.runbutton)
        self.runbutton.clicked.connect(self.runCode)

        editor = CodeEdit()
        if has_pyqode:
            editor.backend.start(server.__file__)
            editor.panels.append(panels.FoldingPanel())
            editor.panels.append(panels.LineNumberPanel())
            editor.panels.append(panels.SearchAndReplacePanel(), panels.SearchAndReplacePanel.Position.BOTTOM)
            editor.panels.append(panels.EncodingPanel(), api.Panel.Position.TOP)
            editor.add_separator()
            editor.panels.append(pypanels.QuickDocPanel(), api.Panel.Position.BOTTOM)
            sh = editor.modes.append(PythonSH(editor.document()))
            editor.modes.append(modes.CaretLineHighlighterMode())
            editor.modes.append(modes.CodeCompletionMode())
            editor.modes.append(modes.ExtendedSelectionMode())
            editor.modes.append(modes.FileWatcherMode())
            editor.modes.append(modes.OccurrencesHighlighterMode())
            editor.modes.append(modes.RightMarginMode())
            editor.modes.append(modes.SmartBackSpaceMode())
            editor.modes.append(modes.SymbolMatcherMode())
            editor.modes.append(modes.ZoomMode())
            editor.modes.append(pymodes.CommentsMode())
            editor.modes.append(pymodes.CalltipsMode())
            auto = pymodes.PyAutoCompleteMode()
            auto.logger.setLevel(logging.CRITICAL)
            editor.modes.append(auto)
            editor.modes.append(pymodes.PyAutoIndentMode())
            editor.modes.append(pymodes.PyIndenterMode())
            editor.show()
        else:
            editor.setStyleSheet("font-size: 10pt; font-family: Consolas, Courier;")

        self.editor = editor
        self.snippets = snippets
        if self.snippets:
            self.list = QtWidgets.QComboBox(self)
            self.replace_snippet(0)
            for snip_name in self.snippets.keys():
                self.list.addItem(snip_name)
            self.tools.addWidget(self.list)
            self.list.currentIndexChanged[int].connect(self.replace_snippet)

        self.layout.addWidget(self.editor)
        self.output = QtWidgets.QTextEdit()
        self.output.setReadOnly(True)
        self.output.setStyleSheet("font-size: 10pt; font-family: Consolas, Courier; background-color: #444;")
        self.layout.addWidget(self.output)

    def replace_snippet(self, number=None):
        snip = list(self.snippets.values())[number]
        if has_pyqode:
            self.editor.setPlainText(snip, "", "")
        else:
            self.editor.setPlainText(snip)

    def load_file(self, f, **kwargs):
        output = []
        sys.stdout = StdoutRedirector(self.output)
        self.model = f
        self.c = self.Console({"model": self.model, "selection": None, "viewer": self.viewer})
        sys.stdout = sys.__stdout__
