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

from tools import trace, timer

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

from PyQt5.QtWidgets import (
    QDialogButtonBox, QPushButton, QLineEdit,
    QFileDialog, QTableView, QAbstractItemView,
    QUndoStack, QShortcut, QAction, QItemDelegate,
    QComboBox,
)

from View.SedimentLayers.Edit.UndoCommand import *
from View.SedimentLayers.Edit.translate import *

_translate = QCoreApplication.translate


class TableModel(QAbstractTableModel):
    def __init__(self, study=None, sl=None, undo=None):
        super(QAbstractTableModel, self).__init__()
        self._headers = list(table_headers.keys())
        self._study = study
        self._undo = undo
        self._sl = sl

    def flags(self, index):
        options = Qt.ItemIsEnabled | Qt.ItemIsSelectable
        options |= Qt.ItemIsEditable

        return options

    def rowCount(self, parent):
        return len(self._sl)

    def columnCount(self, parent):
        return len(self._headers)

    def data(self, index, role):
        if role != Qt.ItemDataRole.DisplayRole:
            return QVariant()

        row = index.row()
        column = index.column()

        if self._headers[column] == "name":
            return self._sl.get(row).name
        elif self._headers[column] == "type":
            return self._sl.get(row).type
        elif self._headers[column] == "height":
            return self._sl.get(row).height

        return QVariant()

    def headerData(self, friction, orientation, role):
        if role == Qt.ItemDataRole.DisplayRole and orientation == Qt.Orientation.Horizontal:
            return table_headers[self._headers[friction]]

        return QVariant()

    def setData(self, index, value, role=Qt.EditRole):
        if not index.isValid() or role != Qt.EditRole:
            return False

        row = index.row()
        column = index.column()

        if self._headers[column] == "name":
            self._undo.push(
                SetNameCommand(
                    self._sl, row, value
                )
            )
        if self._headers[column] == "type":
            self._undo.push(
                SetTypeCommand(
                    self._sl, row, value
                )
            )
        if self._headers[column] == "height":
            self._undo.push(
                SetHeightCommand(
                    self._sl, row, value
                )
            )

        self.dataChanged.emit(index, index)
        return True

    def add(self, row, parent=QModelIndex()):
        self.beginInsertRows(parent, row, row - 1)

        self._undo.push(
            AddCommand(
                self._sl, row
            )
        )

        self.endInsertRows()
        self.layoutChanged.emit()

    def delete(self, rows, parent=QModelIndex()):
        self.beginRemoveRows(parent, rows[0], rows[-1])

        self._undo.push(
            DelCommand(
                self._sl, rows
            )
        )

        self.endRemoveRows()
        self.layoutChanged.emit()

    def move_up(self, row, parent=QModelIndex()):
        if row <= 0:
            return

        target = row + 2

        self.beginMoveRows(parent, row - 1, row - 1, parent, target)

        self._undo.push(
            MoveCommand(
                self._sl, "up", row
            )
        )

        self.endMoveRows()
        self.layoutChanged.emit()

    def move_down(self, row, parent=QModelIndex()):
        if row > len(self._sl):
            return

        target = row

        self.beginMoveRows(parent, row + 1, row + 1, parent, target)

        self._undo.push(
            MoveCommand(
                self._sl, "down", row
            )
        )

        self.endMoveRows()
        self.layoutChanged.emit()

    def undo(self):
        self._undo.undo()
        self.layoutChanged.emit()

    def redo(self):
        self._undo.redo()
        self.layoutChanged.emit()