// ------------------------------------------------------ //
// Extension Settings Menu for Simple Tiling - Version 2  //
// © 2025 domoel – MIT                                    //
// ------------------------------------------------------ //

// ---------------------------------------------------- //
// Global Imports                                       //
// ---------------------------------------------------- //
'use strict';

const { Gtk, GObject, Gio } = imports.gi;
const ExtensionUtils = imports.misc.extensionUtils;

const SCHEMA_NAME = 'org.gnome.shell.extensions.simple-tiling.domoel';

// ---------------------------------------------------- //
// Definition of Row Model                              //
// ---------------------------------------------------- //
const COLUMN_ID = 0;
const COLUMN_DESC = 1;
const COLUMN_KEY = 2;
const COLUMN_MODS = 3;

function init() {}

function buildPrefsWidget() {
    const settings = ExtensionUtils.getSettings(SCHEMA_NAME);
    
    const prefsWidget = new Gtk.Box({
        orientation: Gtk.Orientation.VERTICAL,
        margin_top: 20,
        margin_bottom: 20,
        margin_start: 20,
        margin_end: 20,
        spacing: 18,
        visible: true,
    });
    
    // ---------------------------------------------------- //
    // Section for Keybindings                              //
    // ---------------------------------------------------- //
    const keysTitle = new Gtk.Label({ label: '<b>Tastenkürzel</b>', use_markup: true, halign: Gtk.Align.START, visible: true });
    const keysFrame = new Gtk.Frame({ label_widget: keysTitle, shadow_type: Gtk.ShadowType.NONE, visible: true });
    let keysBox = new Gtk.Box({ orientation: Gtk.Orientation.VERTICAL, margin: 12, spacing: 6, visible: true });
    keysFrame.add(keysBox);
    
    let store = new Gtk.ListStore();
    store.set_column_types([ GObject.TYPE_STRING, GObject.TYPE_STRING, GObject.TYPE_INT, GObject.TYPE_INT ]);

    addKeybinding(store, settings, 'swap-master-window', 'Master-Fenster tauschen');
    addKeybinding(store, settings, 'swap-left-window', 'Nach links tauschen');
    addKeybinding(store, settings, 'swap-right-window', 'Nach rechts tauschen');
    addKeybinding(store, settings, 'swap-up-window', 'Nach oben tauschen');
    addKeybinding(store, settings, 'swap-down-window', 'Nach unten tauschen');
    
    let treeView = new Gtk.TreeView({ model: store, headers_visible: false, hexpand: true, visible: true });
    keysBox.add(treeView);

    let descRenderer = new Gtk.CellRendererText();
    let descColumn = new Gtk.TreeViewColumn({ expand: true });
    descColumn.pack_start(descRenderer, true);
    descColumn.add_attribute(descRenderer, 'text', COLUMN_DESC);
    treeView.append_column(descColumn);

    let accelRenderer = new Gtk.CellRendererAccel({ 'accel-mode': Gtk.CellRendererAccelMode.GTK, 'editable': true });
    let accelColumn = new Gtk.TreeViewColumn();
    accelColumn.pack_end(accelRenderer, false);
    accelColumn.add_attribute(accelRenderer, 'accel-key', COLUMN_KEY);
    accelColumn.add_attribute(accelRenderer, 'accel-mods', COLUMN_MODS);
    treeView.append_column(accelColumn);
    
    accelRenderer.connect('accel-edited', (renderer, path_string, key, mods, hw_code) => {
        let [ok, iter] = store.get_iter_from_string(path_string);
        if (!ok) return;
        store.set(iter, [COLUMN_KEY, COLUMN_MODS], [key, mods]);
        let id = store.get_value(iter, COLUMN_ID);
        let accelString = Gtk.accelerator_name(key, mods);
        settings.set_strv(id, [accelString]);
    });

    accelRenderer.connect('accel-cleared', (renderer, path_string) => {
        let [ok, iter] = store.get_iter_from_string(path_string);
        if (!ok) return;
        store.set(iter, [COLUMN_KEY, COLUMN_MODS], [0, 0]);
        let id = store.get_value(iter, COLUMN_ID);
        settings.set_strv(id, []);
    });

    prefsWidget.add(keysFrame);
    
    
    // ---------------------------------------------------- //
    // Section for Window Gaps                              //
    // ---------------------------------------------------- //
    const gapsTitle = new Gtk.Label({ label: '<b>Abstände (Gaps)</b>', use_markup: true, halign: Gtk.Align.START, visible: true });
    const gapsFrame = new Gtk.Frame({ label_widget: gapsTitle, shadow_type: Gtk.ShadowType.NONE, visible: true });
    const gapsGrid = new Gtk.Grid({ margin: 12, column_spacing: 12, row_spacing: 12, visible: true });
    gapsFrame.add(gapsGrid);

    addSpinButtonRow(gapsGrid, settings, "Innerer Abstand (zwischen Fenstern)", "inner-gap", 0);
    addSpinButtonRow(gapsGrid, settings, "Äußerer Abstand (horizontal)", "outer-gap-horizontal", 1);
    addSpinButtonRow(gapsGrid, settings, "Äußerer Abstand (vertikal)", "outer-gap-vertical", 2);

    prefsWidget.add(gapsFrame);

    // ---------------------------------------------------- //
    // Section for Window Behavior (Master vs. Stack)       //
    // ---------------------------------------------------- //
    const behaviorTitle = new Gtk.Label({ label: '<b>Verhalten</b>', use_markup: true, halign: Gtk.Align.START, visible: true });
    const behaviorFrame = new Gtk.Frame({ label_widget: behaviorTitle, shadow_type: Gtk.ShadowType.NONE, visible: true });
    const behaviorGrid = new Gtk.Grid({ margin: 12, column_spacing: 12, row_spacing: 12, visible: true });
    behaviorFrame.add(behaviorGrid);
    
    const comboLabel = new Gtk.Label({ label: "Neues Fenster öffnen als", halign: Gtk.Align.START, visible: true });
    behaviorGrid.attach(comboLabel, 0, 0, 1, 1);

    const comboBox = new Gtk.ComboBoxText({ visible: true, halign: Gtk.Align.END });
    comboBox.append('stack', 'Stack-Fenster (Standard)');
    comboBox.append('master', 'Master-Fenster');
    
    comboBox.set_active_id(settings.get_string('new-window-behavior'));

    comboBox.connect('changed', () => {
        settings.set_string('new-window-behavior', comboBox.get_active_id());
    });
    
    behaviorGrid.attach(comboBox, 1, 0, 1, 1);
    prefsWidget.add(behaviorFrame);

    return prefsWidget;
}

function addKeybinding(model, settings, id, description) {
    let [key, mods] = [0, 0];
    
    const strv = settings.get_strv(id);
    if (strv && strv.length > 0 && strv[0]) {
        [key, mods] = Gtk.accelerator_parse(strv[0]);
    }

    let iter = model.append();
    model.set(iter, 
        [COLUMN_ID, COLUMN_DESC, COLUMN_KEY, COLUMN_MODS], 
        [id, description, key, mods]
    );
}

function addSpinButtonRow(grid, settings, description, key, position) {
    const label = new Gtk.Label({ label: description, halign: Gtk.Align.START, visible: true });
    grid.attach(label, 0, position, 1, 1);

    const adjustment = new Gtk.Adjustment({ lower: 0, upper: 50, step_increment: 1 });
    const spinButton = new Gtk.SpinButton({
        adjustment: adjustment,
        climb_rate: 1,
        digits: 0,
        halign: Gtk.Align.END,
        visible: true,
    });
    settings.bind(key, spinButton, 'value', Gio.SettingsBindFlags.DEFAULT);
    grid.attach(spinButton, 1, position, 1, 1);
}