# Window.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

from tools import trace, timer

from View.ASubWindow import ASubMainWindow
from View.ListedSubWindow import ListedSubWindow

from PyQt5.QtGui import (
    QKeySequence,
)

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, QVBoxLayout, QHeaderView, QTabWidget,
)

from Model.BoundaryCondition.BoundaryConditionTypes import (
    NotDefined, PonctualContribution,
    TimeOverZ, TimeOverDischarge, ZOverDischarge
)

from View.BoundaryCondition.UndoCommand import (
    SetNameCommand, SetNodeCommand, SetTypeCommand,
    AddCommand, DelCommand, SortCommand,
    MoveCommand, PasteCommand, DuplicateCommand,
)

from View.BoundaryCondition.Table import (
    TableModel, ComboBoxDelegate
)

from View.Network.GraphWidget import GraphWidget
from View.BoundaryCondition.translate import *
from View.BoundaryCondition.Edit.Window import EditBoundaryConditionWindow

_translate = QCoreApplication.translate

logger = logging.getLogger()

class BoundaryConditionWindow(ASubMainWindow, ListedSubWindow):
    def __init__(self, title="Boundary conditions", study=None, parent=None):
        self._title = title + " - " + study.name

        super(BoundaryConditionWindow, self).__init__(
            name=title, ui="BoundaryConditions", parent=parent
        )

        self._study = study
        self._bcs = self._study.river.boundary_condition

        self.setup_sc()
        self.setup_table()
        self.setup_graph()
        self.setup_connections()

        self.ui.setWindowTitle(self._title)

    def setup_sc(self):
        self._undo_stack = QUndoStack()

        self.undo_sc = QShortcut(QKeySequence.Undo, self)
        self.redo_sc = QShortcut(QKeySequence.Redo, self)
        self.copy_sc = QShortcut(QKeySequence.Copy, self)
        self.paste_sc = QShortcut(QKeySequence.Paste, self)

    def setup_table(self):
        self._table = {}

        for t in ["liquid", "solid", "suspenssion"]:
            table = self.find(QTableView, f"tableView_{t}")
            self._table[t] = TableModel(
                data = self._study.river,
                undo = self._undo_stack,
                tab = t,
            )
            table.setModel(self._table[t])

            self._delegate_type = ComboBoxDelegate(
                data = self._study.river,
                mode = "type",
                tab = t,
                parent=self
            )
            self._delegate_node = ComboBoxDelegate(
                data = self._study.river,
                mode = "node",
                tab = t,
                parent=self
            )

            table.setItemDelegateForColumn(
                1, self._delegate_type
            )
            table.setItemDelegateForColumn(
                2, self._delegate_node
            )

            table.setSelectionBehavior(QAbstractItemView.SelectRows)
            table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
            table.setAlternatingRowColors(True)

    def setup_graph(self):
        self.graph_widget = GraphWidget(
            self._study.river,
            min_size=None, size=(200,200),
            only_display=True,
            parent=self
        )
        self.graph_layout = self.find(QVBoxLayout, "verticalLayout")
        self.graph_layout.addWidget(self.graph_widget)

    def setup_connections(self):
        self.find(QAction, "action_add").triggered.connect(self.add)
        self.find(QAction, "action_del").triggered.connect(self.delete)
        self.find(QAction, "action_edit").triggered.connect(self.edit)
        self.find(QAction, "action_sort").triggered.connect(self.sort)

        self.undo_sc.activated.connect(self.undo)
        self.redo_sc.activated.connect(self.redo)
        self.copy_sc.activated.connect(self.copy)
        self.paste_sc.activated.connect(self.paste)

    def current_tab(self):
        return self.find(QTabWidget, "tabWidget")\
                   .currentWidget()\
                   .objectName()\
                   .replace("tab_", "")

    def index_selected_row(self):
        tab = self.current_tab()
        table = self.find(QTableView, f"tableView_{tab}")
        return table.selectionModel()\
                    .selectedRows()[0]\
                    .row()

    def index_selected_rows(self):
        tab = self.current_tab()
        table = self.find(QTableView, f"tableView_{tab}")
        return list(
            # Delete duplicate
            set(
                map(
                    lambda i: i.row(),
                    table.selectedIndexes()
                )
            )
        )

    def add(self):
        tab = self.current_tab()
        rows = self.index_selected_rows()
        if self._bcs.len(tab) == 0 or len(rows) == 0:
            self._table[tab].add(0)
        else:
            self._table[tab].add(rows[0])

    def delete(self):
        tab = self.current_tab()
        rows = self.index_selected_rows()
        if len(rows) == 0:
            return

        self._table[tab].delete(rows)

    def sort(self):
        tab = self.current_tab()
        self._table[tab].sort(False)

    def move_up(self):
        tab = self.current_tab()
        row = self.index_selected_row()
        self._table[tab].move_up(row)

    def move_down(self):
        tab = self.current_tab()
        row = self.index_selected_row()
        self._table[tab].move_down(row)

    def copy(self):
        logger.info("TODO: copy")

    def paste(self):
        logger.info("TODO: paste")

    def undo(self):
        tab = self.current_tab()
        self._table[tab].undo()

    def redo(self):
        tab = self.current_tab()
        self._table[tab].redo()

    def edit(self):
        tab = self.current_tab()
        rows = self.index_selected_rows()
        for row in rows:
            win = self.sub_win_filter_first(
                "Edit boundary condition",
                contain = [f"({self._bcs.get(tab, row).id})"]
            )

            if win is None:
                win = EditBoundaryConditionWindow(
                    data=self._bcs.get(tab, row),
                    study=self._study,
                    parent=self
                )
                win.show()
            else:
                win.activateWindow()