/*
    Copyright (C) 2020-21 Sebastian J. Wolf and other contributors

    This file is part of Fernschreiber.

    Fernschreiber 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.

    Fernschreiber 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 Fernschreiber. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.6
import Sailfish.Silica 1.0
import WerkWolf.Fernschreiber 1.0
import "../components"
import "../js/twemoji.js" as Emoji

Page {
    id: aboutPage
    allowedOrientations: Orientation.All

    readonly property var userInformation : tdLibWrapper.userInformation

    SilicaFlickable {
        id: aboutContainer
        contentHeight: column.height
        anchors.fill: parent

        Column {
            id: column
            width: aboutPage.width
            spacing: Theme.paddingLarge

            PageHeader {
                title: qsTr("About Fernschreiber")
            }

            Image {
                id: wunderfitzImage
                source: "../../images/fernschreiber.svg"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                sourceSize {
                    width: width
                    height: height
                }
                fillMode: Image.PreserveAspectFit
                asynchronous: true
                width: Math.min(2 * Theme.itemSizeHuge, Math.min(aboutPage.width, aboutPage.height) / 2)
                height: width
            }

            Label {
                text: "Fernschreiber 0.10.1"
                horizontalAlignment: Text.AlignHCenter
                font.pixelSize: Theme.fontSizeExtraLarge
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Label {
                wrapMode: Text.Wrap
                x: Theme.horizontalPageMargin
                width: parent.width - ( 2 * Theme.horizontalPageMargin )
                horizontalAlignment: Text.AlignHCenter
                text: qsTr("A Telegram client for Sailfish OS")
                font.pixelSize: Theme.fontSizeSmall
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Label {
                text: qsTr("By Sebastian J. Wolf and <a href=\"https://github.com/Wunderfitz/harbour-fernschreiber#contributions\">other contributors</a>")
                font.pixelSize: Theme.fontSizeSmall
                width: parent.width - ( 2 * Theme.horizontalPageMargin )
                horizontalAlignment: Text.AlignHCenter
                wrapMode: Text.Wrap
                linkColor: Theme.highlightColor
                onLinkActivated: Qt.openUrlExternally(link)
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"mailto:sebastian@ygriega.de\">" + qsTr("Send E-Mail") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("mailto:sebastian@ygriega.de")
            }

            Separator {
                width: parent.width
                color: Theme.primaryColor
                horizontalAlignment: Qt.AlignHCenter
            }

            Label {
                text: qsTr("Licensed under GNU GPLv3")
                font.pixelSize: Theme.fontSizeSmall
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"https://github.com/Wunderfitz/harbour-fernschreiber\">" + qsTr("Sources on GitHub") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("https://github.com/Wunderfitz/harbour-fernschreiber")
            }

            SectionHeader {
                text: qsTr("About Telegram")
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                horizontalAlignment: Text.AlignHCenter
                text: qsTr("This product uses the Telegram API but is not endorsed or certified by Telegram.")
                font.pixelSize: Theme.fontSizeSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                horizontalAlignment: Text.AlignHCenter
                text: qsTr("TDLib version %1").arg(tdLibWrapper.getVersion())
                font.pixelSize: Theme.fontSizeSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Loader {
                id: userInformationLoader
                active: tdLibWrapper.authorizationState === TelegramAPI.AuthorizationReady
                width: parent.width
                sourceComponent: Component {
                    Column {

                        spacing: Theme.paddingSmall

                        Text {
                            x: Theme.horizontalPageMargin
                            width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                            horizontalAlignment: Text.AlignHCenter
                            text: qsTr("Logged in as %1").arg(Emoji.emojify(aboutPage.userInformation.first_name + " " + aboutPage.userInformation.last_name, Theme.fontSizeSmall))
                            font.pixelSize: Theme.fontSizeSmall
                            wrapMode: Text.Wrap
                            color: Theme.primaryColor
                            textFormat: Text.StyledText
                            anchors {
                                horizontalCenter: parent.horizontalCenter
                            }
                        }

                        ProfileThumbnail {
                            photoData: ((typeof aboutPage.userInformation.profile_photo !== "undefined") ? aboutPage.userInformation.profile_photo.small : {})
                            width: Theme.itemSizeExtraLarge
                            height: Theme.itemSizeExtraLarge
                            replacementStringHint: aboutPage.userInformation.first_name + " " + aboutPage.userInformation.last_name
                            anchors {
                                horizontalCenter: parent.horizontalCenter
                            }
                        }

                        Label {
                            x: Theme.horizontalPageMargin
                            width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                            horizontalAlignment: Text.AlignHCenter
                            text: qsTr("Phone number: +%1").arg(aboutPage.userInformation.phone_number)
                            font.pixelSize: Theme.fontSizeSmall
                            wrapMode: Text.Wrap
                            anchors {
                                horizontalCenter: parent.horizontalCenter
                            }
                        }
                        BackgroundItem {
                            width: parent.width

                            BackgroundItem {
                                id: logOutItem
                                width: parent.width
                                function showRemorseItem() {
                                    remorse.execute(logOutItem, qsTr("Logged out"), function() {
                                        tdLibWrapper.logout();
                                        pageStack.pop();
                                    });
                                }
                                RemorseItem {
                                    id: remorse
                                }
                                Button {
                                   id: logOutButton
                                    text: qsTr("Log Out")
                                    anchors {
                                        horizontalCenter: parent.horizontalCenter
                                    }
                                    onClicked: {
                                        logOutItem.showRemorseItem();
                                    }
                                }
                            }
                        }

                        Button {
                            id: activeSessionsButton
                            text: qsTr("Active Sessions")
                            anchors {
                                horizontalCenter: parent.horizontalCenter
                            }
                            onClicked: {
                                pageStack.push(Qt.resolvedUrl("ActiveSessionsPage.qml"));
                            }
                        }
                    }
                }
            }

            Button {
                text: qsTr("Terms of Service")
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                onClicked: {
                    Qt.openUrlExternally("https://telegram.org/tos");
                }
            }

            Button {
                text: qsTr("Privacy Policy")
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                onClicked: {
                    Qt.openUrlExternally("https://telegram.org/privacy")
                }
            }

            SectionHeader {
                text: qsTr("Credits")
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                text: qsTr("This project uses the Telegram Database Library (TDLib). Thanks for making it available under the conditions of the Boost Software License 1.0!")
                font.pixelSize: Theme.fontSizeExtraSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"https://github.com/tdlib/td\">" + qsTr("Open Telegram Database Library on GitHub") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("https://github.com/tdlib/td")
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                text: qsTr("This project uses twemoji. Copyright 2018 Twitter, Inc. and other contributors. Thanks for making it available under the conditions of the MIT License (coding) and CC-BY 4.0 (graphics)!")
                font.pixelSize: Theme.fontSizeExtraSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"https://github.com/twitter/twemoji\">" + qsTr("Open twemoji on GitHub") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("https://github.com/twitter/twemoji")
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                text: qsTr("This project uses rlottie. Copyright 2020 Samsung Electronics Co., Ltd. and other contributors. Thanks for making it available under the conditions of the MIT License!")
                font.pixelSize: Theme.fontSizeExtraSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"https://github.com/Samsung/rlottie\">" + qsTr("Open rlottie on GitHub") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("https://github.com/Samsung/rlottie")
            }

            Label {
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                text: qsTr("This project uses OpenStreetMap Nominatim for reverse geocoding of location attachments. Thanks for making it available as web service!")
                font.pixelSize: Theme.fontSizeExtraSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            Text {
                text: "<a href=\"https://wiki.openstreetmap.org/wiki/Nominatim\">" + qsTr("Open OSM Nominatim Wiki") + "</a>"
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
                font.pixelSize: Theme.fontSizeSmall
                linkColor: Theme.highlightColor

                onLinkActivated: Qt.openUrlExternally("https://wiki.openstreetmap.org/wiki/Nominatim")
            }

            Label {
                id: separatorLabel
                x: Theme.horizontalPageMargin
                width: parent.width  - ( 2 * Theme.horizontalPageMargin )
                font.pixelSize: Theme.fontSizeExtraSmall
                wrapMode: Text.Wrap
                anchors {
                    horizontalCenter: parent.horizontalCenter
                }
            }

            VerticalScrollDecorator {}
        }

    }
}