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

from copy import deepcopy
from tools import trace, timer

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

from Model.BoundaryCondition.BoundaryCondition import BoundaryCondition
from Model.BoundaryCondition.BoundaryConditionList import BoundaryConditionList

class SetNameCommand(QUndoCommand):
    def __init__(self, lst, index, new_value):
        QUndoCommand.__init__(self)

        self._lst = lst
        self._index = index
        self._old = self._lst[self._index].name
        self._new = new_value

    def undo(self):
        self._lst[self._index].name = self._old

    def redo(self):
        self._lst[self._index].name = self._new

class SetNodeCommand(QUndoCommand):
    def __init__(self, lst, index, node):
        QUndoCommand.__init__(self)

        self._lst = lst
        self._index = index
        self._old = self._lst[index].node
        self._new = node

    def undo(self):
        self._lst[self._index].node = self._old

    def redo(self):
        self._lst[self._index].node = self._new

class SetTypeCommand(QUndoCommand):
    def __init__(self, lst, index, _type):
        QUndoCommand.__init__(self)

        self._lst = lst
        self._index = index
        self._type = _type
        self._old = self._lst[index]
        self._new = self._lst[index].convert(self._type)

    def undo(self):
        self._lst[self._index] = self._old

    def redo(self):
        self._lst[self._index] = self._new

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

        self._lst = lst
        self._index = index
        self._new = None

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

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

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

        self._lst = lst
        self._rows = rows

        self._bc = []
        for row in rows:
            self._bc.append((row, self._lst[row]))
        self._bc.sort()

    def undo(self):
        for row, el in self._bc:
            self._lst.insert(row, el)

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

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

        self._lst = lst
        self._reverse = _reverse

        self._old = self._lst.copy()
        self._indexes = None

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

    def redo(self):
        self._lst.sort(
            reverse=self._reverse,
            key=lambda x: x.name
        )
        if self._indexes is None:
            self._indexes = list(
                map(
                    lambda p: self._old.index(p),
                    self._lst
                )
            )
            self._old = None


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

        self._lst = lst
        self._up = up == "up"
        self._i = i

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

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


class PasteCommand(QUndoCommand):
    def __init__(self, lst, row, bc):
        QUndoCommand.__init__(self)

        self._lst = lst
        self._row = row
        self._bc = deepcopy(bc)
        self._bc.reverse()

    def undo(self):
        self._lst.delete(self._bc)

    def redo(self):
        for bc in self._bc:
            self._lst.insert(self._row, bc)


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

        self._lst = lst
        self._rows = rows
        self._bc = deepcopy(bc)
        self._bc.reverse()

    def undo(self):
        self._lst.delete(self._bc)

    def redo(self):
        for profile in self._profiles:
            self._lst.insert(self._rows[0], profile)