import QtQuick
import Quickshell
import Quickshell.Bluetooth
import qs.Common
import qs.Services
import qs.Widgets

Item {
    id: widget

    readonly property var adapter: BluetoothService.adapter
    readonly property bool adapterEnabled: BluetoothService.enabled
    readonly property var devices: BluetoothService.pairedDevices || []

    function batteryText(device) {
        if (device && device.batteryAvailable && device.battery > 0)
            return Math.round(device.battery * 100) + "%";

        return "";
    }

    Row {
        id: header

        anchors.top: parent.top
        anchors.left: parent.left
        anchors.right: parent.right
        height: 34
        spacing: Theme.spacingS

        DankIcon {
            anchors.verticalCenter: parent.verticalCenter
            name: widget.adapterEnabled ? "bluetooth" : "bluetooth_disabled"
            size: Theme.iconSize - 6
            color: widget.adapterEnabled ? Theme.primary : Theme.surfaceVariantText
        }

        StyledText {
            anchors.verticalCenter: parent.verticalCenter
            width: parent.width - Theme.iconSize - scanButton.width - toggle.width - parent.spacing * 3
            text: widget.adapter ? (widget.adapterEnabled ? "On" : "Off") : "No adapter"
            font.pixelSize: Theme.fontSizeSmall
            color: Theme.surfaceVariantText
            elide: Text.ElideRight
        }

        DankActionButton {
            id: scanButton

            anchors.verticalCenter: parent.verticalCenter
            iconName: "search"
            buttonSize: 30
            iconSize: 17
            iconColor: BluetoothService.discovering ? Theme.primary : Theme.surfaceText
            enabled: widget.adapterEnabled
            onClicked: {
                if (widget.adapter)
                    widget.adapter.discovering = !widget.adapter.discovering;
            }
        }

        DankToggle {
            id: toggle

            anchors.verticalCenter: parent.verticalCenter
            hideText: true
            checked: widget.adapterEnabled
            enabled: widget.adapter !== null
            onToggled: isChecked => {
                if (widget.adapter)
                    widget.adapter.enabled = isChecked;
            }
        }
    }

    DankListView {
        id: deviceList

        anchors.top: header.bottom
        anchors.topMargin: Theme.spacingXS
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.bottom: parent.bottom
        clip: true
        spacing: Theme.spacingXS
        visible: widget.adapterEnabled && widget.devices.length > 0
        model: widget.devices

        delegate: Rectangle {
            id: deviceItem

            required property var modelData

            readonly property bool isConnected: modelData.connected
            readonly property bool isBusy: BluetoothService.isDeviceBusy(modelData)

            width: deviceList.width
            height: 46
            radius: Theme.cornerRadius
            color: isConnected ? Theme.primarySelected : (deviceArea.containsMouse ? Theme.surfaceHover : Theme.withAlpha(Theme.surfaceLight, Theme.popupTransparency))
            border.color: isConnected ? Theme.primary : Theme.outlineLight
            border.width: isConnected ? 1 : Theme.layerOutlineWidth

            DankIcon {
                id: deviceIcon

                anchors.left: parent.left
                anchors.leftMargin: Theme.spacingM
                anchors.verticalCenter: parent.verticalCenter
                name: BluetoothService.getDeviceIcon(deviceItem.modelData)
                size: Theme.iconSize - 6
                color: deviceItem.isConnected ? Theme.primary : Theme.surfaceText
            }

            Column {
                anchors.left: deviceIcon.right
                anchors.leftMargin: Theme.spacingS
                anchors.right: busyIndicator.left
                anchors.rightMargin: Theme.spacingS
                anchors.verticalCenter: parent.verticalCenter
                spacing: 0

                StyledText {
                    width: parent.width
                    text: deviceItem.modelData.name || deviceItem.modelData.address
                    font.pixelSize: Theme.fontSizeMedium
                    font.weight: deviceItem.isConnected ? Font.Medium : Font.Normal
                    color: Theme.surfaceText
                    elide: Text.ElideRight
                }

                StyledText {
                    width: parent.width
                    text: {
                        const battery = widget.batteryText(deviceItem.modelData);
                        const state = deviceItem.isBusy ? "Working…" : (deviceItem.isConnected ? "Connected" : "Disconnected");
                        return battery !== "" ? state + " · " + battery : state;
                    }
                    font.pixelSize: Theme.fontSizeSmall
                    color: Theme.surfaceVariantText
                    elide: Text.ElideRight
                }
            }

            DankSpinner {
                id: busyIndicator

                anchors.right: parent.right
                anchors.rightMargin: Theme.spacingM
                anchors.verticalCenter: parent.verticalCenter
                size: 18
                running: deviceItem.isBusy
                visible: deviceItem.isBusy
            }

            MouseArea {
                id: deviceArea

                anchors.fill: parent
                hoverEnabled: true
                enabled: !deviceItem.isBusy
                cursorShape: enabled ? Qt.PointingHandCursor : Qt.ArrowCursor
                onClicked: {
                    if (deviceItem.isConnected)
                        deviceItem.modelData.disconnect();
                    else
                        BluetoothService.connectDeviceWithTrust(deviceItem.modelData);
                }
            }
        }
    }

    Column {
        anchors.centerIn: parent
        spacing: Theme.spacingS
        visible: !deviceList.visible

        DankIcon {
            anchors.horizontalCenter: parent.horizontalCenter
            name: "bluetooth_disabled"
            size: Theme.iconSizeLarge
            color: Theme.surfaceVariantText
        }

        StyledText {
            anchors.horizontalCenter: parent.horizontalCenter
            text: widget.adapterEnabled ? "No paired devices" : "Bluetooth is off"
            font.pixelSize: Theme.fontSizeSmall
            color: Theme.surfaceVariantText
        }
    }
}