// SPDX-FileCopyrightText: 2018 Martin Kacej <m.kacej@atlas.sk>
// SPDX-FileCopyrightText: 2020 Dimitris Kardarakos <dimkard@posteo.net>
// SPDX-FileCopyrightText: 2021-2022 Devin Lin <espidev@gmail.com>
// SPDX-License-Identifier: GPL-2.0-or-later

import QtQuick 2.12
import QtQuick.Layouts 1.2
import QtQuick.Controls 2.12 as Controls

import org.kde.plasma.networkmanagement 0.2 as PlasmaNM
import org.kde.kirigami 2.19 as Kirigami
import org.kde.kcmutils as KCM
import org.kde.kirigamiaddons.labs.mobileform 0.1 as MobileForm

import cellularnetworkkcm 1.0

KCM.SimpleKCM {
    id: root
    objectName: "mobileDataMain"

    leftPadding: 0
    rightPadding: 0
    topPadding: Kirigami.Units.gridUnit
    bottomPadding: Kirigami.Units.gridUnit
    
    Kirigami.PlaceholderMessage {
        id: noModem
        anchors.centerIn: parent
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.margins: Kirigami.Units.gridUnit
        
        visible: !enabledConnections.wwanHwEnabled || !availableDevices.modemDeviceAvailable || !kcm.modemFound
        icon.name: "auth-sim-missing"
        text: i18n("Modem not available")
    }
    
    ColumnLayout {
        spacing: 0
        width: root.width
        visible: !noModem.visible
        
        PlasmaNM.Handler {
            id: nmHandler
        }

        PlasmaNM.AvailableDevices {
            id: availableDevices
        }

        PlasmaNM.EnabledConnections {
            id: enabledConnections
        }
        
        SimPage {
            id: simPage
            visible: false
        }
        
        MessagesList {
            Layout.fillWidth: true
            Layout.margins: Kirigami.Units.gridUnit
            model: kcm.messages
        }
        
        MobileForm.FormCard {
            Layout.fillWidth: true
            
            contentItem: ColumnLayout {
                spacing: 0
                
                MobileForm.FormSwitchDelegate {
                    id: mobileDataSwitch
                    text: i18n("Mobile data")
                    description: {
                        if (!kcm.modemFound) {
                            return "";
                        } else if (!kcm.selectedModem.hasSim) {
                            return i18n("No SIM is inserted.")
                        } if (!kcm.selectedModem.mobileDataSupported) {
                            return i18n("Mobile data is not available with this modem.")
                        } else if (kcm.selectedModem.needsAPNAdded) {
                            return i18n("An APN needs to be configured to have mobile data.");
                        } else {
                            return i18n("Whether mobile data is enabled.");
                        }
                    }
                    
                    property bool manuallySet: false
                    property bool shouldBeChecked: kcm.selectedModem && kcm.selectedModem.mobileDataEnabled
                    onShouldBeCheckedChanged: {
                        checked = shouldBeChecked;
                    }
                    
                    enabled: kcm.selectedModem.mobileDataSupported && !kcm.selectedModem.needsAPNAdded
                    checked: shouldBeChecked
                    
                    onCheckedChanged: {
                        // prevent binding loops
                        if (manuallySet) {
                            manuallySet = false;
                            return;
                        }
                        
                        if (kcm.selectedModem.mobileDataEnabled != checked) {
                            manuallySet = true;
                            kcm.selectedModem.mobileDataEnabled = checked;
                        }
                    }
                }
                
                MobileForm.FormDelegateSeparator { above: mobileDataSwitch; below: dataUsageButton }
                
                MobileForm.FormButtonDelegate {
                    id: dataUsageButton
                    text: i18n("Data Usage")
                    description: i18n("View data usage.")
                    icon.name: "office-chart-bar"
                    
                    enabled: false
                }
            }
        }
        
        MobileForm.FormCard {
            Layout.fillWidth: true
            Layout.topMargin: Kirigami.Units.gridUnit
            
            contentItem: ColumnLayout {
                spacing: 0
                
                MobileForm.FormCardHeader {
                    title: kcm.sims.count == 1 ? i18n("SIM") : i18n("SIMs")
                }
                
                Repeater {
                    id: repeater
                    model: kcm.sims
                    
                    delegate: ColumnLayout {
                        Layout.fillWidth: true
                        
                        Kirigami.Separator {
                            visible: model.index !== 0
                            Layout.leftMargin: Kirigami.Units.gridUnit
                            Layout.rightMargin: Kirigami.Units.gridUnit
                            Layout.fillWidth: true
                            opacity: (!(model.index && repeater.itemAt(model.index - 1).controlHovered) && !simDelegate.controlHovered) ? 0.5 : 0
                        }
                        
                        MobileForm.FormButtonDelegate {
                            id: simDelegate
                            text: i18n("SIM %1", modelData.displayId)
                            description: i18n("View SIM %1 details.", modelData.displayId)
                            icon.name: "auth-sim-symbolic"
                            onClicked: {
                                simPage.sim = modelData;
                                simPage.visible = true;
                                kcm.push(simPage);
                            }
                        }
                    }
                }
            }
        }
    }
}