# Table.py -- Pamhyr
# Copyright (C) 2023  INRAE
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

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

import logging
import traceback

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.Stricklers.UndoCommand import (
    SetNameCommand, SetCommentCommand,
    SetMinorCommand, SetMediumCommand,
    AddCommand, DelCommand, SortCommand,
)

from View.Stricklers.translate import *

logger = logging.getLogger()

_translate = QCoreApplication.translate

class TableModel(QAbstractTableModel):
    def __init__(self, data=None, undo=None, tab=""):
        super(QAbstractTableModel, self).__init__()
        self._headers = list(table_headers.keys())
        self._data = data
        self._undo = undo

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

        return options

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

    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._data.get(row).name
        elif self._headers[column] == "comment":
            return self._data.get(row).comment
        elif self._headers[column] == "minor":
            return self._data.get(row).minor
        elif self._headers[column] == "medium":
            return self._data.get(row).medium

        return QVariant()

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

        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()

        try:
            if self._headers[column] == "name":
                self._undo.push(
                    SetNameCommand(
                        self._data, row, value
                    )
                )
            elif self._headers[column] == "comment":
                self._undo.push(
                    SetCommentCommand(
                        self._data, row, value
                    )
                )
            elif self._headers[column] == "minor":
                self._undo.push(
                    SetMinorCommand(
                        self._data, row, value
                    )
                )
            elif self._headers[column] == "medium":
                self._undo.push(
                    SetMediumCommand(
                        self._data, row, value
                    )
                )
        except Exception as e:
            logger.info(e)
            logger.debug(traceback.format_exc())

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

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

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

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

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

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

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

    def sort(self, _reverse, parent=QModelIndex()):
        self.layoutAboutToBeChanged.emit()

        self._undo.push(
            SortCommand(
                self._data, False
            )
        )

        self.layoutAboutToBeChanged.emit()
        self.layoutChanged.emit()

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

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