# ============================================================
# Auto Zoomer - plugin for Falkon
# Copyright (C) 2019 Juraj Oravec <sgd.orava@gmail.com>
#
# 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 <http://www.gnu.org/licenses/>.
# ============================================================

import Falkon
import os
from PySide2 import QtCore, QtGui, QtWidgets
from autoZoomer.settingsDialog import SettingsDialog
from autoZoomer.str2bool import str2bool
from autoZoomer.i18n import i18n


class AutoZoomer(QtCore.QObject):
    menuAction = None
    data = None
    remove = None
    config = None

    configChanged = QtCore.Signal()

    def __init__(self, settingsPath, parent=None):
        super().__init__(parent)

        self.config = {
            "settingsFile": os.path.join(settingsPath, "autoZoomer", "settings.ini"),
            "active": True,
            "defaultZoom": True,
            "shortcut": ""
        }
        self.data = {}
        self.remove = []

        self.loadSettings()

    def showSettings(self, parent=None):
        settings = SettingsDialog(self.config, self.data, self.remove, parent)
        settings.accepted.connect(self.saveSettings)
        settings.accepted.connect(self.configChanged)
        settings.exec_()

    def loadSettings(self):
        settings = QtCore.QSettings(self.config["settingsFile"], QtCore.QSettings.IniFormat)

        settings.beginGroup("AutoZoomer")
        self.config["active"] = str2bool(settings.value("active", True))
        self.config["defaultZoom"] = str2bool(settings.value("defaultZoom", True))
        self.config["shortcut"] = str(settings.value("shortcut", ""))
        settings.endGroup()

        for group in settings.childGroups():
            if group == "AutoZoomer":
                continue

            settings.beginGroup(group)
            self.data[group] = {
                "active": str2bool(settings.value("active", False)),
                "zoom": int(settings.value("zoom", 6))
            }
            settings.endGroup()

    def saveSettings(self):
        settings = QtCore.QSettings(self.config["settingsFile"], QtCore.QSettings.IniFormat)

        settings.beginGroup("AutoZoomer")
        settings.setValue("active", self.config["active"])
        settings.setValue("defaultZoom", self.config["defaultZoom"])
        settings.setValue("shortcut", self.config["shortcut"])
        settings.endGroup()

        for host in self.remove:
            settings.remove(host)
        self.remove.clear()

        for key, value in self.data.items():
            settings.beginGroup(key)
            settings.setValue("active", value["active"])
            settings.setValue("zoom", value["zoom"])
            settings.endGroup()

        settings.sync()

    def onLoadFinished(self, page):
        if not self.config["active"]:
            return

        view = page.view()
        host = page.url().host()

        if host in self.data.keys():
            if self.data[host]["active"]:
                if view.zoomLevel() != self.data[host]["zoom"]:
                    view.setZoomLevel(self.data[host]["zoom"])
        elif self.config["defaultZoom"]:
            defaultZoom = Falkon.Settings.staticSettings().defaultZoomLevel

            if view.zoomLevel() != defaultZoom:
                view.setZoomLevel(defaultZoom)

    def createMenuAction(self, parent=None, shortcut=False):
        menuAction = Falkon.Action(
            QtGui.QIcon(os.path.join(os.path.dirname(__file__), "icon.svg")),
            i18n("Save current zoom level"),
            parent
        )
        if self.config["shortcut"] and shortcut:
            menuAction.setShortcut(QtGui.QKeySequence(self.config["shortcut"]))
        menuAction.triggered.connect(self.onMenuActionTriggered)

        return menuAction

    def onMenuActionTriggered(self):
        view = Falkon.MainApplication.instance().getWindow().weView()
        host = view.page().url().host()
        zoom = view.zoomLevel()

        print(host, zoom)
        self.addItem(host=host, zoom=zoom)

    def onPopulateExtensionsMenu(self, menu):
        menuAction = self.createMenuAction(menu)

        menu.addAction(menuAction)

    def addItem(self, host, zoom=6, active=True):
        if not host:
            return

        if host in self.data.keys():
            self.data[host]["zoom"] = zoom
            self.data[host]["active"] = active
        else:
            self.data[host] = {
                "active": active,
                "zoom": zoom
            }