// 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.Io
import QtQuick
import QtQuick.Controls
import "../.."
import "../appearance"
import "Sonix.js" as S
import Qt.labs.platform as P

// The boot logo editor: the canvas on the left, its controls on the right;
// Save and Upload live in the page header (BootlogoModule.qml) and call
// save() and upload() here.
Row {
    id: tab
    spacing: 24

    // Edited locally, written to Prefs after a pause, not on every drag step.
    property var cfg: Object.assign({}, Prefs.bootlogo)
    function set(ch) { tab.cfg = Object.assign({}, tab.cfg, ch); cfgWrite.restart(); }
    Timer { id: cfgWrite; interval: 600; onTriggered: Prefs.setBootlogo(tab.cfg) }
    // Keeps the last edit when the page closes inside the pause.
    Component.onDestruction: if (cfgWrite.running) Prefs.setBootlogo(tab.cfg)

    readonly property string folder: tab.cfg.folder || Quickshell.env("HOME") + "/Pictures/sonix-bootlogo"
    readonly property string cardDir: "/data/mnt/sd_0/Bootlogo"

    property bool busy: false
    property bool waiting: false
    property string status: ""
    property bool statusError: false
    readonly property bool canSave: canvas.ready && !tab.busy
    function say(t, err) { tab.status = t; tab.statusError = !!err; }

    readonly property var swatches: ["#ffffff", "#000000", "#3584e4", "#ff7800", "#e5a50a",
                                     "#2ec27e", "#9141ac", "#d56199", "udt"]
    readonly property var fontKeys: [["bungee", "Bungee + Inline"], ["mono", "Major Mono"],
                                     ["michroma", "Michroma"], ["audiowide", "Audiowide"]]

    // --- save and upload --------------------------------------------------

    // then(file) runs after a successful save.
    function save(then) {
        tab.busy = true;
        mk.then = then || null;
        mk.command = ["mkdir", "-p", tab.folder];
        mk.running = false;
        mk.running = true;
    }
    Process {
        id: mk
        property var then: null
        onExited: code => {
            if (code !== 0) { tab.busy = false; tab.say(`Cannot create ${tab.folder}`, true); return; }
            const base = tab.folder + "/" + S.stamp(new Date());
            canvas.save(base, (ok, err) => {
                tab.busy = false;
                if (!ok) { tab.say(err, true); return; }
                tab.say(`Saved ${base}.png`);
                if (mk.then) mk.then(base + ".png");
            });
        }
    }

    // The wait for Wi-Fi transfer is capped by time, 60s from the click.
    property real deadline: 0
    function upload() { tab.save(file => { tab.deadline = Date.now() + 60000; tab.send(file); }); }
    function send(file) {
        tab.busy = true;
        Sonix.upload(file, tab.cardDir, (code, out) => {
            // busy stays true through the wait; only a final answer clears it.
            if (code === 3 && Date.now() < tab.deadline) {
                tab.waiting = true;
                tab.say("Open Wi-Fi transfer on the player (Control centre) and leave it on screen.", true);
                retry.file = file;
                retry.restart();
                return;
            }
            tab.busy = false;
            tab.waiting = false;
            if (code === 0)
                tab.say("Uploaded. Pick it on the player: Settings > Appearance > Boot logo. You can leave Wi-Fi transfer now.");
            else if (code === 3)
                tab.say("Wi-Fi transfer did not answer for 60s. The copy is saved locally.", true);
            else
                tab.say(`Upload failed: ${out || "exit " + code}. The copy is saved locally.`, true);
        });
    }
    Timer { id: retry; property string file: ""; interval: 2000; onTriggered: tab.send(file) }

    // --- canvas -----------------------------------------------------------

    // 0.75 for display; the canvas itself stays 480x800 for the grab.
    Rectangle {
        width: 480 * 0.75 + 8
        height: 800 * 0.75 + 8
        radius: 14
        color: "black"
        border.width: 2
        border.color: Qt.alpha(Theme.text, 0.25)

        Item {
            x: 4; y: 4
            width: 480 * 0.75
            height: 800 * 0.75
            scale: 0.75
            transformOrigin: Item.TopLeft

            BootlogoCanvas {
                id: canvas
                cfg: tab.cfg
                text: tab.cfg.text || Quickshell.env("USER")
                moveText: moveTextBtn.chosen
                onTextMoved: (x, y) => tab.set({ x: Math.round(x), y: Math.round(y) })
            }
        }

        Text {
            anchors.centerIn: parent
            width: parent.width - 40
            visible: !canvas.ready
            wrapMode: Text.Wrap
            horizontalAlignment: Text.AlignHCenter
            text: canvas.loadError || "Choose a picture"
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
            color: canvas.loadError ? Theme.red : Theme.subtext
        }
    }

    // --- controls ---------------------------------------------------------

    component Heading: Text {
        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2; bold: true }
        color: Theme.text
    }

    component Swatches: Row {
        id: sw
        property string value: ""
        signal picked(string v)
        spacing: 6
        Repeater {
            model: tab.swatches
            delegate: Rectangle {
                required property string modelData
                width: 24; height: 24; radius: 6
                color: S.colour(modelData, Theme.accent)
                border.width: sw.value === modelData ? 3 : 1
                border.color: sw.value === modelData ? Theme.text : Qt.alpha(Theme.text, 0.3)
                Text {
                    visible: modelData === "udt"
                    anchors.centerIn: parent
                    text: "U"
                    font { family: Theme.fontFamily; pixelSize: 11; bold: true }
                    color: Theme.base
                }
                MouseArea {
                    anchors.fill: parent
                    cursorShape: Qt.PointingHandCursor
                    onClicked: sw.picked(modelData)
                }
            }
        }
    }

    Column {
        width: 380
        spacing: 12

        Heading { text: "Picture" }
        Row {
            spacing: 8
            Button { text: "Choose picture…"; onClicked: pick.open() }
            Button { text: "Reset"; enabled: canvas.ready; onClicked: canvas.recentre() }
        }
        Row {
            spacing: 8
            Button {
                text: "Move picture"
                border.color: !moveTextBtn.chosen ? Theme.accent : Qt.alpha(Theme.text, 0.2)
                onClicked: moveTextBtn.chosen = false
            }
            Button {
                id: moveTextBtn
                property bool chosen: false
                text: "Move text"
                border.color: chosen ? Theme.accent : Qt.alpha(Theme.text, 0.2)
                onClicked: chosen = true
            }
        }
        Text {
            text: "Drag on the preview; the wheel zooms the picture."
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 5 }
            color: Theme.subtext
        }

        Heading { text: "Text" }
        Field {
            width: 260
            placeholder: Quickshell.env("USER")
            Component.onCompleted: value = tab.cfg.text
            onValueChanged: if (value !== tab.cfg.text) tab.set({ text: value })
        }
        Flow {
            width: parent.width
            spacing: 6
            Repeater {
                model: tab.fontKeys
                delegate: Button {
                    required property var modelData
                    text: modelData[1]
                    font.family: canvas.families[modelData[0]]
                    border.color: tab.cfg.font === modelData[0] ? Theme.accent : Qt.alpha(Theme.text, 0.2)
                    onClicked: tab.set({ font: modelData[0] })
                }
            }
        }
        Row {
            spacing: 8
            Button { text: "Top"; onClicked: tab.set({ x: 240, y: 120 }) }
            Button { text: "Centre"; onClicked: tab.set({ x: 240, y: 400 }) }
            Button { text: "Bottom"; onClicked: tab.set({ x: 240, y: 690 }) }
        }
        Row {
            spacing: 8
            Text {
                width: 60
                anchors.verticalCenter: parent.verticalCenter
                text: "Size"
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                color: Theme.subtext
            }
            Slider {
                width: 260
                from: 40; to: 240; stepSize: 1
                value: tab.cfg.size
                onMoved: tab.set({ size: Math.round(value) })
            }
        }

        Heading { text: "Colours" }
        Row {
            spacing: 8
            Text {
                width: 60
                anchors.verticalCenter: parent.verticalCenter
                text: "Fill"
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                color: Theme.subtext
            }
            Swatches { value: tab.cfg.fill; onPicked: v => tab.set({ fill: v }) }
        }
        Row {
            spacing: 8
            Text {
                width: 60
                anchors.verticalCenter: parent.verticalCenter
                text: tab.cfg.font === "bungee" ? "Inline" : "Shadow"
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                color: Theme.subtext
            }
            Swatches { value: tab.cfg.second; onPicked: v => tab.set({ second: v }) }
        }
        Button { text: "Swap colours"; onClicked: tab.set({ fill: tab.cfg.second, second: tab.cfg.fill }) }
        Row {
            visible: tab.cfg.font !== "bungee"
            spacing: 8
            Text {
                width: 60
                anchors.verticalCenter: parent.verticalCenter
                text: "Offset"
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                color: Theme.subtext
            }
            Slider {
                width: 160
                from: 0; to: 30; stepSize: 1
                value: tab.cfg.offset
                onMoved: tab.set({ offset: Math.round(value) })
            }
            Repeater {
                model: [["nw", "↖"], ["ne", "↗"], ["sw", "↙"], ["se", "↘"]]
                delegate: Button {
                    required property var modelData
                    text: modelData[1]
                    border.color: tab.cfg.dir === modelData[0] ? Theme.accent : Qt.alpha(Theme.text, 0.2)
                    onClicked: tab.set({ dir: modelData[0] })
                }
            }
        }

        Heading { text: "Output" }
        Row {
            spacing: 8
            Text {
                width: 260
                anchors.verticalCenter: parent.verticalCenter
                elide: Text.ElideMiddle
                text: tab.folder
                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
                color: Theme.text
            }
            Button { text: "Change…"; onClicked: pickFolder.open() }
        }
        Text {
            width: parent.width
            wrapMode: Text.Wrap
            text: "Save writes the logo and a transparent mask of the text. Upload also sends the logo to the card's Bootlogo folder; Wi-Fi transfer must be open on the player."
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 5 }
            color: Theme.subtext
        }
    }

    // A FileDialog hands back a file:// URL.
    function pathOf(u) { return decodeURIComponent(u.toString().replace(/^file:\/\//, "")); }

    // Qt.labs.platform, not QtQuick.Dialogs: the Quick dialog opens light on
    // this desktop (AGENTS.md); this one takes the widget style.
    P.FileDialog {
        id: pick
        title: "Choose a picture"
        fileMode: P.FileDialog.OpenFile
        folder: "file://" + Quickshell.env("HOME") + "/Pictures"
        nameFilters: ["Pictures (*.jpg *.jpeg *.png *.JPG *.JPEG *.PNG)"]
        onAccepted: canvas.source = pick.file
    }
    P.FolderDialog {
        id: pickFolder
        title: "Output folder"
        folder: "file://" + tab.folder
        currentFolder: "file://" + tab.folder
        onAccepted: tab.set({ folder: tab.pathOf(pickFolder.folder) })
    }
}