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

from copy import deepcopy
from tools import trace, timer

from PyQt5.QtWidgets import (
    QMessageBox, QUndoCommand, QUndoStack,
)

from Model.LateralContribution.LateralContribution import LateralContribution

class SetDataCommand(QUndoCommand):
    def __init__(self, data, index, column, new_value):
        QUndoCommand.__init__(self)

        self._data = data
        self._index = index
        self._column = column
        self._old = self._data.get_i(self._index)[self._column]
        self._new = new_value

    def undo(self):
        self._data._set_i_c_v(self._index, self._column, self._old)

    def redo(self):
        self._data._set_i_c_v(self._index, self._column, self._new)

class AddCommand(QUndoCommand):
    def __init__(self, data, index):
        QUndoCommand.__init__(self)

        self._data = data
        self._index = index
        self._new = None

    def undo(self):
        self._data.delete_i([self._index])

    def redo(self):
        if self._new is None:
            self._new = self._data.add(self._index)
        else:
            self._data.insert(self._index, self._new)

class DelCommand(QUndoCommand):
    def __init__(self, data, rows):
        QUndoCommand.__init__(self)

        self._data = data
        self._rows = rows

        self._lc = []
        for row in rows:
            self._lc.append((row, self._data.get_i(row)))
        self._lc.sort()

    def undo(self):
        for row, el in self._lc:
            self._data.insert(row, el)

    def redo(self):
        self._data.delete_i(self._rows)

class SortCommand(QUndoCommand):
    def __init__(self, data, _reverse):
        QUndoCommand.__init__(self)

        self._data = data
        self._reverse = _reverse

        self._old = self._data.data
        self._indexes = None

    def undo(self):
        ll = self._data.data
        self._data.sort(
            key=lambda x: self._indexes[ll.index(x)]
        )

    def redo(self):
        self._data.sort(
            _reverse=self._reverse,
            key=lambda x: x[0]
        )
        if self._indexes is None:
            self._indexes = list(
                map(
                    lambda p: self._old.index(p),
                    self._data.data
                )
            )
            self._old = None


class MoveCommand(QUndoCommand):
    def __init__(self, data, up, i):
        QUndoCommand.__init__(self)

        self._data = data
        self._up = up == "up"
        self._i = i

    def undo(self):
        if self._up:
            self._data.move_up(self._i)
        else:
            self._data.move_down(self._i)

    def redo(self):
        if self._up:
            self._data.move_up(self._i)
        else:
            self._data.move_down(self._i)


class PasteCommand(QUndoCommand):
    def __init__(self, data, row, lcs):
        QUndoCommand.__init__(self)

        self._data = data
        self._row = row
        self._lcs = lcs
        self._lcs.reverse()

    def undo(self):
        self._data.delete(self._lcs)

    def redo(self):
        for bc in self._lcs:
            self._data.insert(self._row, bc)


class DuplicateCommand(QUndoCommand):
    def __init__(self, data, rows, bc):
        QUndoCommand.__init__(self)

        self._data = data
        self._rows = rows
        self._lc = deepcopy(bc)
        self._lc.reverse()

    def undo(self):
        self._data.delete(self._lc)

    def redo(self):
        for bc in self._lcs:
            self._data.insert(self._rows[0], bc)