/*
 * Copyright (C) 2021-2022 Savoir-faire Linux Inc.
 * Author: Yang Wang <yang.wang@savoirfairelinux.com>
 * Author: Sébastien blin <sebastien.blin@savoirfairelinux.com>
 * Author: Mingrui Zhang <mingrui.zhang@savoirfairelinux.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 <https://www.gnu.org/licenses/>.
 */

import QtQuick
import QtQuick.Layouts

import net.jami.Models 1.1
import net.jami.Adapters 1.1
import net.jami.Constants 1.1

import "../../commoncomponents"


Rectangle {
    id: root

    property int preferredHeight: welcomePageColumnLayout.implicitHeight + 2 * JamiTheme.wizardViewPageBackButtonMargins + JamiTheme.wizardViewPageBackButtonSize
    property bool showTab: false
    property bool showAlreadyHave: false
    property bool showAdvanced: false

    signal showThisPage

    color: JamiTheme.secondaryBackgroundColor
    opacity: 0.93

    Connections {
        target: WizardViewStepModel

        function onMainStepChanged() {
            if (WizardViewStepModel.mainStep === WizardViewStepModel.MainSteps.Initial)
                root.showThisPage()
        }
    }

    // Make sure that welcomePage grab activeFocus initially (when there is no account)
    onVisibleChanged: {
        if (visible)
            forceActiveFocus()
    }

    KeyNavigation.tab: newAccountButton
    KeyNavigation.up: newAccountButton
    KeyNavigation.down: KeyNavigation.tab


    ColumnLayout {
        id: welcomePageColumnLayout

        spacing: JamiTheme.wizardViewPageLayoutSpacing

        anchors.horizontalCenter: parent.horizontalCenter
        anchors.top: parent.top
        anchors.topMargin: JamiTheme.wizardViewLayoutTopMargin
        width: Math.max(508, root.width - 100)


        ResponsiveImage {
            id: welcomeLogo

            Layout.alignment: Qt.AlignCenter | Qt.AlignTop

            Layout.preferredWidth: JamiTheme.welcomeLogoWidth
            Layout.preferredHeight: JamiTheme.welcomeLogoHeight

            source: JamiResources.jami_svg
        }

        Text {
            id: introduction

            Layout.alignment: Qt.AlignCenter
            Layout.topMargin: JamiTheme.wizardViewPageBackButtonMargins
            Layout.preferredWidth: Math.min(350, root.width - JamiTheme.preferredMarginSize * 2)

            text: JamiStrings.introductionJami
            color: JamiTheme.textColor
            horizontalAlignment: Text.AlignHCenter
            verticalAlignment: Text.AlignVCenter
            wrapMode : Text.WordWrap

            font.pixelSize: JamiTheme.wizardViewTitleFontPixelSize
            font.kerning: true
        }

        Text {
            id: description

            Layout.alignment: Qt.AlignCenter
            Layout.topMargin: JamiTheme.wizardViewPageBackButtonMargins
            Layout.preferredWidth: Math.min(440, root.width - JamiTheme.preferredMarginSize * 2)

            text: JamiStrings.description
            color: JamiTheme.textColor
            horizontalAlignment: Text.AlignHCenter
            verticalAlignment: Text.AlignVCenter
            wrapMode : Text.WordWrap
            lineHeight: 1.4

            font.pixelSize: JamiTheme.wizardViewDescriptionFontPixelSize
            font.kerning: true
        }

        MaterialButton {
            id: newAccountButton

            objectName: "newAccountButton"
            primary: true

            Layout.alignment: Qt.AlignCenter
            Layout.topMargin: 21
            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)

            text: JamiStrings.joinJami
            toolTipText: JamiStrings.createNewJamiAccount

            KeyNavigation.tab: alreadyHaveAccount
            KeyNavigation.up: backButton.visible ? backButton :
                                                   (showAdvancedButton.showAdvanced ?
                                                        newSIPAccountButton :
                                                        showAdvancedButton)
            KeyNavigation.down: KeyNavigation.tab

            onClicked: WizardViewStepModel.startAccountCreationFlow(WizardViewStepModel.AccountCreationOption.CreateJamiAccount)
        }

        MaterialButton {
            id: alreadyHaveAccount

            objectName: "alreadyHaveAccount"
            primary: true

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)

            Layout.alignment: Qt.AlignCenter

            text: JamiStrings.alreadyHaveAccount
            toolTipText: JamiStrings.useExistingAccount

            font.bold: true

            hoverEnabled: true

            KeyNavigation.tab: showAlreadyHave ? fromDeviceButton : showAdvancedButton


            KeyNavigation.up: newAccountButton
            KeyNavigation.down: KeyNavigation.tab

            onClicked: {
                boldFont = !boldFont
                showAlreadyHave = !showAlreadyHave
                showAdvanced = false
                fromDeviceButton.visible = showAlreadyHave
                fromBackupButton.visible = showAlreadyHave
                newRdvButton.visible = showAdvanced
                connectAccountManagerButton.visible = showAdvanced
                newSIPAccountButton.visible = showAdvanced

            }
        }

        MaterialButton {
            id: fromDeviceButton

            objectName: "fromDeviceButton"
            secondary: true
            color: JamiTheme.secAndTertiTextColor
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor

            Layout.alignment: Qt.AlignCenter

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)

            visible: false

            text: JamiStrings.importAccountFromAnotherDevice
            toolTipText: JamiStrings.linkFromAnotherDevice

            KeyNavigation.tab: fromBackupButton
            KeyNavigation.up: alreadyHaveAccount
            KeyNavigation.down: KeyNavigation.tab

            onClicked: WizardViewStepModel.startAccountCreationFlow(WizardViewStepModel.AccountCreationOption.ImportFromDevice)
        }

        MaterialButton {
            id: fromBackupButton

            objectName: "fromBackupButton"
            secondary: true
            color: JamiTheme.secAndTertiTextColor
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor

            visible: false

            Layout.alignment: Qt.AlignCenter
            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)

            text: JamiStrings.importAccountFromBackup
            toolTipText: JamiStrings.connectFromBackup

            KeyNavigation.tab: showAdvancedButton
            KeyNavigation.up: fromDeviceButton
            KeyNavigation.down: KeyNavigation.tab

            onClicked: WizardViewStepModel.startAccountCreationFlow(WizardViewStepModel.AccountCreationOption.ImportFromBackup)
        }


        MaterialButton {
            id: showAdvancedButton

            objectName: "showAdvancedButton"
            tertiary: true
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor

            Layout.alignment: Qt.AlignCenter
            Layout.bottomMargin: newSIPAccountButton.visible ?
                                     0 : JamiTheme.wizardViewPageBackButtonMargins

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)
            text: JamiStrings.advancedFeatures
            toolTipText: showAdvanced ? JamiStrings.hideAdvancedFeatures :
                                        JamiStrings.showAdvancedFeatures


            KeyNavigation.tab: showAdvanced ? newRdvButton : btnAboutPopUp
            KeyNavigation.up: showAlreadyHave ? fromBackupButton : alreadyHaveAccount
            KeyNavigation.down: KeyNavigation.tab

            onClicked: {
                boldFont = !boldFont
                showAdvanced = !showAdvanced
                showAlreadyHave = false
                newRdvButton.visible = showAdvanced
                connectAccountManagerButton.visible = showAdvanced
                newSIPAccountButton.visible = showAdvanced
                fromDeviceButton.visible = showAlreadyHave
                fromBackupButton.visible = showAlreadyHave
            }
        }

        MaterialButton {
            id: newRdvButton

            objectName: "newRdvButton"
            secondary: true
            color: JamiTheme.secAndTertiTextColor
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor

            Layout.alignment: Qt.AlignCenter

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)
            visible: false

            text: JamiStrings.createNewRV
            toolTipText: JamiStrings.createNewRV

            KeyNavigation.tab: connectAccountManagerButton
            KeyNavigation.up: showAdvancedButton
            KeyNavigation.down: connectAccountManagerButton

            onClicked: WizardViewStepModel.startAccountCreationFlow(WizardViewStepModel.AccountCreationOption.CreateRendezVous)
        }

        MaterialButton {
            id: connectAccountManagerButton

            objectName: "connectAccountManagerButton"
            secondary: true
            color: JamiTheme.secAndTertiTextColor
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor

            Layout.alignment: Qt.AlignCenter

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)
            visible: false

            text: JamiStrings.connectJAMSServer
            toolTipText: JamiStrings.createFromJAMS

            KeyNavigation.tab: newSIPAccountButton
            KeyNavigation.up: newRdvButton
            KeyNavigation.down: newSIPAccountButton

            onClicked: WizardViewStepModel.startAccountCreationFlow(WizardViewStepModel.AccountCreationOption.ConnectToAccountManager)
        }

        MaterialButton {
            id: newSIPAccountButton

            objectName: "newSIPAccountButton"
            secondary: true
            color: JamiTheme.secAndTertiTextColor
            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor
            pressedColor: JamiTheme.buttonTintedBluePressed

            Layout.alignment: Qt.AlignCenter
            Layout.bottomMargin: JamiTheme.wizardViewPageBackButtonMargins

            preferredWidth: Math.min(JamiTheme.wizardButtonWidth, root.width - JamiTheme.preferredMarginSize * 2)
            visible: false

            text: JamiStrings.addSIPAccount
            toolTipText: JamiStrings.createNewSipAccount

            KeyNavigation.tab: btnAboutPopUp
            KeyNavigation.up: connectAccountManagerButton
            KeyNavigation.down: KeyNavigation.tab

            onClicked: WizardViewStepModel.startAccountCreationFlow(
                           WizardViewStepModel.AccountCreationOption.CreateSipAccount)
        }


        MaterialButton {
            id: btnAboutPopUp

            Layout.alignment: Qt.AlignBottom | Qt.AlignHCenter
            Layout.bottomMargin: JamiTheme.preferredMarginSize

            preferredWidth: JamiTheme.aboutButtonPreferredWidth

            secHoveredColor: JamiTheme.secAndTertiHoveredBackgroundColor
            tertiary: true

            KeyNavigation.tab: backButton.visible ? backButton : newAccountButton
            KeyNavigation.up: connectAccountManagerButton
            KeyNavigation.down: KeyNavigation.tab

            text: JamiStrings.aboutJami

            onClicked: aboutPopUpDialog.open()
        }
    }

    BackButton {
        id: backButton

        objectName: "welcomePageBackButton"

        anchors.left: parent.left
        anchors.top: parent.top
        anchors.margins: JamiTheme.wizardViewPageBackButtonMargins

        Connections {
            target: LRCInstance

            function onAccountListChanged() {
                backButton.visible = UtilsAdapter.getAccountListSize()
            }
        }

        preferredSize: JamiTheme.wizardViewPageBackButtonSize

        visible: UtilsAdapter.getAccountListSize()

        KeyNavigation.tab: newAccountButton
        KeyNavigation.up: showAdvanced ? newSIPAccountButton : showAdvancedButton
        KeyNavigation.down: KeyNavigation.tab

        onClicked: WizardViewStepModel.previousStep()

    }

}
