import QtQuick
import QtQuick.Layouts
import qs.Common
import qs.Services
import qs.Widgets
import qs.Modules.Plugins
import Quickshell.Io
import "./lib.js" as TailscaleLib

PluginComponent {
    id: root

    property bool isConnected: false
    property bool binaryAvailable: true
    property string tailscaleIP: ""
    property string currentExitNode: ""
    property var peers: []
    property string clipboardCmd: ""

    layerNamespacePlugin: "tailscalectl"
    popoutWidth: 360
    popoutHeight: 400

    Timer {
        interval: 5000
        running: true
        repeat: true
        onTriggered: statusCheck.running = true
    }

    Component.onCompleted: {
        detectClipboard.running = true
    }

    Process {
        id: toggleProcess

        onExited: (code, status) => {
            if (code !== 0) {
                var action = root.isConnected ? "disconnect" : "connect"
                ToastService.showError("tailscalectl", TailscaleLib.errorMessage(action))
            }
            statusCheck.running = true
        }
    }

    Process {
        id: copyProcess
    }

    Process {
        id: exitNodeProcess

        onExited: (code, status) => {
            if (code !== 0) {
                ToastService.showError("tailscalectl", TailscaleLib.errorMessage("set"))
            }
            statusCheck.running = true
        }
    }

    Process {
        id: detectClipboard

        command: ["sh", "-c", "which dms >/dev/null 2>&1 && echo 'dms cl copy' || which wl-copy >/dev/null 2>&1 && echo 'wl-copy' || which clipmanctl >/dev/null 2>&1 && echo 'clipmanctl copy' || echo none"]

        stdout: StdioCollector {
            onStreamFinished: {
                root.clipboardCmd = TailscaleLib.parseClipboardDetection(this.text)
            }
        }

        onExited: (code, status) => {
            statusCheck.running = true
        }
    }

    Process {
        id: statusCheck

        command: ["tailscale", "status", "--json"]

        stdout: StdioCollector {
            onStreamFinished: {
                const state = TailscaleLib.parseStatusResult(this.text)
                root.isConnected = state.isConnected
                root.tailscaleIP = state.tailscaleIP
                root.currentExitNode = state.currentExitNode
                root.peers = state.peers
            }
        }

        onExited: (code, status) => {
            if (code !== 0) {
                root.isConnected = false
                root.tailscaleIP = ""
                root.currentExitNode = ""
                root.peers = []
                if (code === 127) {
                    root.binaryAvailable = false
                    ToastService.showError("tailscalectl", "Tailscale binary not found")
                } else {
                    ToastService.showError("tailscalectl", TailscaleLib.errorMessage("status"))
                }
            }
        }
    }

    function toggleTailscale() {
        if (!root.binaryAvailable) {
            ToastService.showError("tailscalectl", "Tailscale not available")
            return
        }
        toggleProcess.command = TailscaleLib.buildToggleCommand(root.isConnected)
        toggleProcess.running = true
    }

    function setExitNode(hostname) {
        if (!root.binaryAvailable) {
            ToastService.showError("tailscalectl", "Tailscale not available")
            return
        }
        exitNodeProcess.command = TailscaleLib.makeExitNodeCommand(hostname)
        exitNodeProcess.running = true
    }

    function copyToClipboard(text) {
        if (!root.clipboardCmd || root.clipboardCmd === "none") {
            ToastService.showError("tailscalectl", "No clipboard tool found")
            return
        }
        var cmd = TailscaleLib.buildCopyCommand(text, root.clipboardCmd)
        if (!cmd) {
            ToastService.showError("tailscalectl", "Invalid clipboard command")
            return
        }
        copyProcess.command = cmd
        copyProcess.running = true
        ToastService.showInfo("Copied " + text + " to clipboard")
    }

    popoutContent: Component {
        PopoutComponent {
            headerText: "Tailscale"
            detailsText: root.isConnected ? "Connected" : "Disconnected"
            showCloseButton: true

            Item {
                id: contentItem
                width: parent.width
                height: Theme.spacingM + statusRow.implicitHeight + Theme.spacingM + peerList.height + Theme.spacingM

                StyledText {
                    visible: !root.binaryAvailable
                    text: "Tailscale not available"
                    anchors.centerIn: parent
                    font.pixelSize: Theme.fontSizeSmall
                    color: Theme.surfaceVariantText
                }

                Row {
                    id: statusRow
                    y: Theme.spacingM
                    width: parent.width
                    spacing: Theme.spacingS
                    anchors.left: parent.left
                    anchors.leftMargin: Theme.spacingM
                    anchors.right: parent.right
                    anchors.rightMargin: Theme.spacingM

                    MouseArea {
                        cursorShape: Qt.PointingHandCursor
                        hoverEnabled: true
                        anchors.verticalCenter: parent.verticalCenter
                        width: toggleIcon.implicitWidth
                        height: toggleIcon.implicitHeight
                        onClicked: {
                            root.toggleTailscale()
                        }

                        DankIcon {
                            id: toggleIcon
                            name: root.isConnected ? "power" : "power_off"
                            size: Theme.iconSize
                            color: Theme.primary
                            anchors.centerIn: parent
                        }
                    }

                    StyledText {
                        text: root.tailscaleIP || "—"
                        font.pixelSize: Theme.fontSizeSmall
                        color: Theme.primary
                        anchors.verticalCenter: parent.verticalCenter
                    }

                    Item { width: 1; height: 1; Layout.fillWidth: true }

                    StyledText {
                        text: "Exit node: " + (root.currentExitNode || "None")
                        font.pixelSize: Theme.fontSizeSmall
                        color: Theme.surfaceVariantText
                        anchors.verticalCenter: parent.verticalCenter
                    }

                    MouseArea {
                        visible: root.currentExitNode !== ""
                        cursorShape: Qt.PointingHandCursor
                        hoverEnabled: true
                        anchors.verticalCenter: parent.verticalCenter
                        width: clearExitNodeText.implicitWidth
                        height: clearExitNodeText.implicitHeight
                        onClicked: {
                            root.setExitNode("")
                        }

                        StyledText {
                            id: clearExitNodeText
                            text: "×"
                            font.pixelSize: Theme.fontSizeSmall
                            color: Theme.surfaceVariantText
                        }
                    }
                }

                ListView {
                    id: peerList
                    y: Theme.spacingM + statusRow.implicitHeight + Theme.spacingM
                    width: parent.width - Theme.spacingM * 2
                    height: Math.min(root.peers.length * (Theme.fontSizeSmall + Theme.spacingXS), 200)
                    anchors.left: parent.left
                    anchors.leftMargin: Theme.spacingM
                    model: root.peers
                    interactive: true
                    boundsBehavior: Flickable.DragAndOvershootBounds

                    delegate: Item {
                        width: peerList.width
                        height: Theme.fontSizeSmall + Theme.spacingXS

                        Row {
                            anchors.fill: parent
                            spacing: Theme.spacingS
                            anchors.verticalCenter: parent.verticalCenter

                            MouseArea {
                                cursorShape: Qt.PointingHandCursor
                                hoverEnabled: true
                                anchors.verticalCenter: parent.verticalCenter
                                width: peerHostnameText.implicitWidth
                                height: peerHostnameText.implicitHeight
                                onClicked: {
                                    root.copyToClipboard(modelData.hostname)
                                }

                                StyledText {
                                    id: peerHostnameText
                                    text: modelData.hostname
                                    font.pixelSize: Theme.fontSizeSmall
                                    color: modelData.online ? Theme.primary : Theme.surfaceVariantText
                                }
                            }

                            MouseArea {
                                cursorShape: Qt.PointingHandCursor
                                hoverEnabled: true
                                anchors.verticalCenter: parent.verticalCenter
                                width: peerIpText.implicitWidth
                                height: peerIpText.implicitHeight
                                onClicked: {
                                    root.copyToClipboard(modelData.ip)
                                }

                                StyledText {
                                    id: peerIpText
                                    text: modelData.ip
                                    font.pixelSize: Theme.fontSizeSmall
                                    color: Theme.surfaceVariantText
                                }
                            }

                            MouseArea {
                                visible: modelData.exitNode
                                cursorShape: Qt.PointingHandCursor
                                hoverEnabled: true
                                anchors.verticalCenter: parent.verticalCenter
                                width: exitNodeButton.implicitWidth
                                height: exitNodeButton.implicitHeight
                                onClicked: {
                                    root.setExitNode(modelData.hostname)
                                }

                                StyledText {
                                    id: exitNodeButton
                                    text: "↗"
                                    font.pixelSize: Theme.fontSizeSmall
                                    color: root.currentExitNode === modelData.hostname ? Theme.primary : Theme.surfaceVariantText
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    // propagateComposedEvents: true so that right-clicks both trigger our context menu
    // *and* bubble to any parent MouseArea (e.g. for shell-level drag handling).
    // Documented because the default (false) is far more common and this choice
    // frequently surprises future maintainers.
    MouseArea {
        anchors.fill: parent
        acceptedButtons: Qt.RightButton
        propagateComposedEvents: true
        onClicked: {
            root.toggleTailscale()
        }
    }

    horizontalBarPill: Component {
        Row {
            spacing: Theme.spacingS

            DankIcon {
                name: root.isConnected ? "vpn_key" : "vpn_key_off"
                size: Theme.iconSize
                color: root.isConnected ? Theme.primary : Theme.surfaceText
            }
        }
    }

    verticalBarPill: Component {
        Column {
            spacing: Theme.spacingXS

            DankIcon {
                name: root.isConnected ? "vpn_key" : "vpn_key_off"
                size: Theme.iconSize
                color: root.isConnected ? Theme.primary : Theme.surfaceText
            }
        }
    }
}