"""
 @file
 @brief This file contains the changelog treeview, used by the about window
 @author Noah Figg <eggmunkee@hotmail.com>
 @author Jonathan Thomas <jonathan@openshot.org>

 @section LICENSE

 Copyright (c) 2008-2018 OpenShot Studios, LLC
 (http://www.openshotstudios.com). This file is part of
 OpenShot Video Editor (http://www.openshot.org), an open-source project
 dedicated to delivering high quality video editing and animation solutions
 to the world.

 OpenShot Video Editor 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.

 OpenShot Video Editor 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 OpenShot Library.  If not, see <http://www.gnu.org/licenses/>.
 """

import webbrowser
from functools import partial

from PyQt5.QtCore import Qt, QRegExp
from PyQt5.QtWidgets import QListView, QTreeView, QAbstractItemView, QSizePolicy, QHeaderView, QApplication
from PyQt5.QtGui import QCursor

from classes.logger import log
from classes.app import get_app
from windows.models.changelog_model import ChangelogModel
from .menu import StyledContextMenu


class ChangelogTreeView(QTreeView):
    """ A ListView QWidget used on the changelog window """
    def resize_contents(self):
        pass

    def refresh_view(self):
        """Format columns and sort"""
        # Model already populated

        # Format columns
        self.header().setSectionResizeMode(0, QHeaderView.Fixed)
        self.header().setSectionResizeMode(1, QHeaderView.Fixed)
        self.setColumnWidth(0, 70)
        self.setColumnWidth(1, 85)
        self.setColumnWidth(2, 125)
        self.setColumnWidth(3, 200)

    def filter_changed(self, text=""):
        """Apply filter text to proxy model"""
        self.model().setFilterRegExp(QRegExp(text, Qt.CaseInsensitive))
        self.model().setFilterKeyColumn(-1)
        self.model().sort(1, Qt.AscendingOrder)

    def contextMenuEvent(self, event):
        log.info('contextMenuEvent')
        _ = get_app()._tr

        # Get data model and selection
        model = self.model()
        index = self.indexAt(event.pos())
        if index.isValid():
            selected_hash = model.index(index.row(), 0).data()

            menu = StyledContextMenu(parent=self)
            copy_action = menu.addAction(_("Copy Hash"))
            copy_action.triggered.connect(partial(self.CopyHashMenuTriggered, selected_hash))
            github_action = menu.addAction(_("View on GitHub"))
            github_action.triggered.connect(partial(self.ChangelogMenuTriggered, selected_hash))
            menu.popup(QCursor.pos())

    def CopyHashMenuTriggered(self, hash=""):
        log.info("CopyHashMenuTriggered")
        clipboard = QApplication.clipboard()
        clipboard.setText(hash)

    def ChangelogMenuTriggered(self, hash=""):
        log.info("ChangelogMenuTriggered")

        try:
            webbrowser.open(self.commit_url % hash)
        except:
            log.warning('Failed to launch web browser to %s' % self.commit_url)

    def __init__(self, commits, commit_url, *args):
        # Invoke parent init
        QListView.__init__(self, *args)

        # Get a reference to the window object
        self.win = get_app().window

        # Get Model data
        self.changelog_model = ChangelogModel(commits)
        self.selected = []

        # Populate model
        self.changelog_model.update_model()

        # Setup header columns
        self.setModel(self.changelog_model.proxy_model)
        self.setIndentation(0)
        self.setSelectionBehavior(QTreeView.SelectRows)
        self.setSelectionBehavior(QAbstractItemView.SelectRows)
        self.setSelectionMode(QAbstractItemView.ExtendedSelection)
        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        self.setWordWrap(True)
        self.setStyleSheet('QTreeView::item { padding-top: 2px; }')
        self.selectionModel().deleteLater()
        self.setSelectionModel(self.changelog_model.selection_model)
        self.commit_url = commit_url

        # Refresh view
        self.refresh_view()
