import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

// One stored session in the sidebar: its name (a rename, else its first
// prompt), how much is in it and when it was last written, and a way to drop
// it. The open one is marked. A file of its own because the sidebar lists them
// through a Repeater -- an inline component would not see modelData there.
Rectangle {
    id: srow
    property var entry: null
    readonly property bool open: entry !== null && entry.current === true

    objectName: "sessionRow:" + (entry !== null ? entry.id : "")
    implicitHeight: rowCol.implicitHeight + 8
    radius: Theme.radiusSm
    color: srow.open ? Theme.accentDim
                     : rowHover.hovered ? Theme.surfaceAlt : "transparent"
    border.width: 1
    border.color: srow.open ? Theme.accent : "transparent"

    signal activated(string id)
    signal removeRequested(string id)

    // "3h ago"; the entries carry ms since the epoch.
    function ago(ms) {
        if (!ms)
            return "never"
        const s = Math.max(0, (Date.now() - ms) / 1000)
        if (s < 60)
            return "just now"
        if (s < 3600)
            return Math.floor(s / 60) + "m ago"
        if (s < 86400)
            return Math.floor(s / 3600) + "h ago"
        return Math.floor(s / 86400) + "d ago"
    }

    HoverHandler { id: rowHover }

    MouseArea {
        anchors.fill: parent
        onClicked: srow.activated(srow.entry.id)
    }

    RowLayout {
        anchors {
            left: parent.left
            right: parent.right
            top: parent.top
            margins: 4
        }
        spacing: 2

        ColumnLayout {
            id: rowCol
            Layout.fillWidth: true
            Layout.leftMargin: 4
            spacing: 0

            Text {
                Layout.fillWidth: true
                elide: Text.ElideRight
                text: srow.entry !== null && srow.entry.title.length ? srow.entry.title
                    : srow.entry !== null && srow.entry.firstUser.length ? srow.entry.firstUser
                    : "(no prompt yet)"
                color: srow.open ? Theme.accentText : Theme.textDim
                font.pixelSize: Theme.smallSize
            }
            Text {
                Layout.fillWidth: true
                elide: Text.ElideRight
                text: {
                    if (srow.entry === null)
                        return ""
                    const n = srow.entry.messages
                    const when = srow.ago(srow.entry.mtime)
                    return n > 0 ? n + (n === 1 ? " message · " : " messages · ") + when
                                 : when
                }
                color: srow.open ? Theme.accentTextDim : Theme.textFaint
                font.pixelSize: Theme.smallSize
            }
        }

        ToolButton {
            objectName: "sessionDelete:" + (srow.entry !== null ? srow.entry.id : "")
            implicitWidth: 26
            implicitHeight: 26
            ToolTip.visible: hovered
            ToolTip.text: "Delete this session and its transcript"
            contentItem: ThemeIcon {
                name: "edit-delete"
                glyph: "×"
                size: 14
                color: parent.hovered ? Theme.err
                     : srow.open ? Theme.accentTextDim : Theme.textFaint
            }
            background: Rectangle {
                radius: Theme.radiusSm
                color: parent.hovered ? Theme.surfaceHi : "transparent"
            }
            onClicked: srow.removeRequested(srow.entry.id)
        }
    }
}