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

from tools import trace, timer

from View.ASubWindow import ASubMainWindow
from View.ListedSubWindow import ListedSubWindow

from PyQt5.QtGui import (
    QKeySequence,
)

from PyQt5.QtCore import (
    Qt, QVariant, QAbstractTableModel,
    QCoreApplication, QModelIndex, QRect, QThread,
    pyqtSlot, pyqtSignal,
)

from PyQt5.QtWidgets import (
    QDialogButtonBox, QPushButton, QLineEdit,
    QFileDialog, QTableView, QAbstractItemView,
    QUndoStack, QShortcut, QAction, QItemDelegate,
    QComboBox, QVBoxLayout, QHeaderView, QTabWidget,
    QProgressBar, QLabel, QTextEdit,
)

_translate = QCoreApplication.translate

class ReplWindow(ASubMainWindow, ListedSubWindow):
    def __init__(self, title="Debug REPL",
                 study=None, config=None,
                 solver=None, parent=None):
        self._title = title

        self._study = study
        self._config = config
        self._parent = parent

        super(ReplWindow, self).__init__(
            name=self._title, ui="DebugRepl", parent=parent
        )
        self.ui.setWindowTitle(self._title)

        self.__debug_exec_result__ = None
        self._history = []
        self._history_ind = 0

        self.setup_connections()

    def setup_connections(self):
        self._hup_sc = QShortcut(QKeySequence("Up"), self)
        self._hdown_sc = QShortcut(QKeySequence("Down"), self)
        self._hup_sc.activated.connect(self.history_up)
        self._hdown_sc.activated.connect(self.history_down)

        self.find(QPushButton, "pushButton").clicked.connect(self.eval_python)

    def history_up(self):
        if self._history_ind < len(self._history):
            self._history_ind += 1
            self.set_line_edit_text("lineEdit", self._history[-self._history_ind])

    def history_down(self):
        if self._history_ind > 0:
            self._history_ind -= 1
            self.set_line_edit_text("lineEdit", self._history[-self._history_ind])

    def eval_python(self):
        code = self.get_line_edit_text("lineEdit")
        self._history.append(code)
        self.set_line_edit_text("lineEdit", "")
        self._history_ind = 0

        code = "self.__debug_exec_result__ = " + code
        print(f"[DEBUG] ! {code}")
        value = exec(code)
        value = self.__debug_exec_result__

        msg = f"<font color=\"grey\"> # " + code + " #</font>"
        self.find(QTextEdit, "textEdit").append(msg)

        self.find(QTextEdit, "textEdit").append(str(value))