// 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 QtQuick
import "../.."

// One section per action, in the order they are done, each hidden when it
// has nothing and no error. Read-only: installing and building stay in the
// terminal.
Column {
    id: page

    required property var up
    readonly property var d: up.doc

    spacing: 16

    function tracked(list) {
        return list.map(r => ({ name: r.name, repo: r.repo, ver: r.from + " → " + r.to }));
    }

    readonly property var sections: !d ? [] : [
        { title: "Slackware upgrades", err: d.errors.mirror || "",
          rows: d.slackware.upgrade.map(r => ({ name: r.name, repo: "", ver: r.from + " → " + r.to })) },
        { title: "New in Slackware", err: "",
          rows: d.slackware.new.map(r => ({ name: r.name, repo: "", ver: r.version })) },
        { title: "Removed from Slackware", err: "",
          rows: d.slackware.removed.map(r => ({ name: r.name, repo: "", ver: "removed " + r.date })) },
        { title: "Upgrade here", err: d.errors.repo || "", rows: tracked(d.upgrade) },
        { title: "Awaiting build", err: "", rows: tracked(d.build) },
        { title: "Upstream newer", err: d.errors.nvchecker || "", rows: tracked(d.upstream) },
        { title: "App updates", err: "", rows: tracked(d.apps) },
    ]

    function ago(t) {
        const m = Math.round((Date.now() / 1000 - t) / 60);
        return m < 1 ? "just now" : m < 60 ? m + " min ago" : Math.round(m / 60) + " h ago";
    }

    Text {
        visible: page.d !== null && page.up.toInstall === 0 && page.up.toBuild === 0
                 && page.d.upstream.length === 0 && page.d.apps.length === 0
        text: "Up to date"
        color: Theme.subtext
        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
    }

    Repeater {
        model: page.sections

        Column {
            required property var modelData
            width: page.width
            spacing: 4
            visible: modelData.rows.length > 0 || modelData.err !== ""

            Text {
                text: modelData.title + (modelData.rows.length ? "  " + modelData.rows.length : "")
                color: Theme.text
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 1; bold: true }
            }

            Text {
                visible: modelData.err !== ""
                text: modelData.err
                color: Theme.subtext
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3; italic: true }
            }

            Repeater {
                model: modelData.rows

                Item {
                    required property var modelData
                    width: page.width
                    height: 22

                    Text {
                        anchors { left: parent.left; right: repo.left; rightMargin: 8; verticalCenter: parent.verticalCenter }
                        elide: Text.ElideRight
                        textFormat: Text.PlainText
                        text: modelData.name
                        color: Theme.text
                        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                    }
                    Text {
                        id: repo
                        anchors { right: ver.left; rightMargin: 12; verticalCenter: parent.verticalCenter }
                        text: modelData.repo
                        color: Theme.subtext
                        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 4 }
                    }
                    Text {
                        id: ver
                        anchors { right: parent.right; verticalCenter: parent.verticalCenter }
                        textFormat: Text.PlainText
                        text: modelData.ver
                        color: Theme.subtext
                        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                    }
                }
            }
        }
    }

    Row {
        spacing: 10

        Text {
            anchors.verticalCenter: parent.verticalCenter
            text: page.up.checking ? "checking…"
                : page.d && page.d.checked ? "checked " + page.ago(page.d.checked) : ""
            color: Theme.subtext
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
        }

        Button {
            text: "Refresh"
            enabled: !page.up.checking
            onClicked: page.up.run(true)
        }
    }
}