# Table.py -- Pamhyr
# Copyright (C) 2023-2026  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.Tools.PamhyrTable import PamhyrTableModel

from View.SolverParameters.UndoCommand import *

from Solver.Solvers import solver_long_name, solver_type_list

logger = logging.getLogger()

_translate = QCoreApplication.translate


class ValueDelegate(QItemDelegate):
    """Use a combo box for solver parameters backed by an index."""

    def createEditor(self, parent, option, index):
        choices = index.model().value_choices(index)
        if choices is None:
            return QLineEdit(parent)

        editor = QComboBox(parent)
        for value, label in choices.items():
            editor.addItem(label, value)
        return editor

    def setEditorData(self, editor, index):
        if isinstance(editor, QComboBox):
            current = index.model().raw_value(index)
            editor.setCurrentIndex(editor.findData(current))
        else:
            editor.setText(str(index.model().raw_value(index)))

    def setModelData(self, editor, model, index):
        if isinstance(editor, QComboBox):
            model.setData(index, editor.currentData())
        else:
            model.setData(index, editor.text())

    def updateEditorGeometry(self, editor, option, index):
        editor.setGeometry(option.rect)


class TableModel(PamhyrTableModel):
    def _setup_lst(self):
        self._tab = self._opt_data
        self._lst = self._data.get_params(self._tab)

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

        row = index.row()
        column = index.column()
        cname = self._headers[column]

        if cname == "name":
            value = self._lst.get(row)[cname]

            if value in self._trad.get_dict("names"):
                value = self._trad.get_dict("names")[value]

            return value
        elif cname == "value":
            value = self._lst.get(row)[cname]

            choices = self.value_choices(index)
            if choices is not None:
                return choices.get(value, value)

            if value in self._trad.get_dict("yes_no"):
                value = self._trad.get_dict("yes_no")[value]

            return value

        return QVariant()

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

        choices = self.value_choices(index)
        if choices is not None:
            reverse_choices = {label: key for key, label in choices.items()}
            value = reverse_choices.get(value, value)
            if str(self.raw_value(index)) == str(value):
                return False

        elif self.is_same_data(index, value):
            return False

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

        try:
            if self._headers[column] == "value":
                if value in self._trad.get_dict("r_yes_no"):
                    value = self._trad.get_dict("r_yes_no")[value].lower()

                self._undo.push(
                    SetCommand(
                        self._lst, row,
                        "value", value
                    )
                )
        except Exception as e:
            logger.info(e)
            logger.debug(traceback.format_exc())

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

    def value_choices(self, index):
        if not index.isValid():
            return None
        name = self._lst.get(index.row())["name"]
        return self._trad.get_dict("indexed_values").get(name)

    def raw_value(self, index):
        return self._lst.get(index.row())["value"]

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

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