// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// 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.

import Quickshell
import Quickshell.Widgets
import QtQuick
import ".."
import "../modules/vm"
import "calendar"
import "Logic.js" as Logic

// Date and time at rest, with one dot per VM that is not plainly shut off.
// During a flick: the workspace's desktop icon, the app's icon and its name.
// A click opens the calendar panel in this capsule.
Capsule {
    id: pill

    property bool flicking: false
    property string flickWs: ""
    property string flickApp: ""
    property string panel: ""

    signal openCalendar()
    signal closeCalendar()

    expanded: panel === "calendar"
    panelWidth: 620
    panelHeight: calendarPanel.implicitHeight + 28

    // The island calls these: focus moves into the panel when it opens, and
    // Escape asks the panel before closing it.
    function focusPanel() { calendarPanel.reset(); calendarPanel.forceActiveFocus(); }
    function back() { return calendarPanel.back(); }

    readonly property var entry: flickApp ? DesktopEntries.heuristicLookup(flickApp) : null
    readonly property string wsIcon: Workspaces.icon(flickWs)
    // Resolved paths, not names, decide what shows: a name the icon theme
    // lacks resolves to "", and testing the name left a blank slot where the
    // workspace number should have been.
    readonly property string wsPath: wsIcon ? Quickshell.iconPath(wsIcon, true) : ""
    readonly property string appPath:
        flickApp ? Quickshell.iconPath(entry?.icon || flickApp, true) : ""

    restWidth: (flicking ? flickRow.implicitWidth : restRow.implicitWidth) + 28

    SystemClock { id: clock; precision: SystemClock.Minutes }

    Row {
        id: restRow
        anchors.centerIn: parent
        spacing: 10
        opacity: pill.flicking || pill.expanded ? 0 : 1
        Behavior on opacity { NumberAnimation { duration: 150 } }

        Text {
            anchors.verticalCenter: parent.verticalCenter
            text: Qt.formatDateTime(clock.date, "ddd dd/MM")
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
            color: Theme.subtext
        }
        Text {
            anchors.verticalCenter: parent.verticalCenter
            text: Qt.formatDateTime(clock.date, "HH:mm")
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize; weight: Font.DemiBold }
            color: Theme.text
        }
        Repeater {
            model: Virsh.names.filter(n => Logic.vmRole(Virsh.vms[n]) !== "")
            delegate: Rectangle {
                required property string modelData
                anchors.verticalCenter: parent.verticalCenter
                width: 8
                height: 8
                radius: 4
                color: Theme[Logic.vmRole(Virsh.vms[modelData])]
            }
        }
    }

    Row {
        id: flickRow
        anchors.centerIn: parent
        spacing: 8
        opacity: pill.flicking && !pill.expanded ? 1 : 0
        Behavior on opacity { NumberAnimation { duration: 150 } }

        // The desktop sits in a badge so it does not read as a second app
        // icon next to the real one.
        Rectangle {
            anchors.verticalCenter: parent.verticalCenter
            implicitWidth: Math.max(26, wsContent.implicitWidth + 10)
            implicitHeight: 24
            radius: 6
            color: Qt.alpha(Theme.surface, 0.9)
            border.width: 1
            border.color: Qt.alpha(Theme.accent, 0.6)

            Item {
                id: wsContent
                anchors.centerIn: parent
                implicitWidth: pill.wsPath !== "" ? wsIconImage.implicitWidth : wsNumber.implicitWidth
                implicitHeight: 18

                IconImage {
                    id: wsIconImage
                    anchors.centerIn: parent
                    visible: pill.wsPath !== ""
                    implicitSize: 16
                    source: pill.wsPath
                }
                // A named workspace, or one past eight, has no icon: its number.
                Text {
                    id: wsNumber
                    anchors.centerIn: parent
                    visible: pill.wsPath === ""
                    text: pill.flickWs
                    font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2; weight: Font.DemiBold }
                    color: Theme.accent
                }
            }
        }
        IconImage {
            anchors.verticalCenter: parent.verticalCenter
            visible: pill.appPath !== ""
            implicitSize: 18
            source: pill.appPath
        }
        Text {
            anchors.verticalCenter: parent.verticalCenter
            visible: pill.flickApp !== ""
            text: pill.entry?.name || pill.flickApp
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 1 }
            color: Theme.text
        }
    }

    // At rest the whole pill is the button; open, the panel takes the clicks.
    MouseArea {
        anchors.fill: parent
        enabled: !pill.expanded
        cursorShape: Qt.PointingHandCursor
        onClicked: pill.openCalendar()
    }

    CalendarPanel {
        id: calendarPanel
        x: 14
        y: 14
        width: pill.panelWidth - 28
        opacity: pill.expanded ? 1 : 0
        visible: opacity > 0
        Behavior on opacity { NumberAnimation { duration: 160 } }
        onCloseRequested: pill.closeCalendar()
    }
}