// Bing Wallpaper GNOME extension
// Copyright (C) 2017-2023 Michael Carroll
// This extension is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// See the GNU General Public License, version 3 or later for details.
// Based on GNOME shell extension NASA APOD by Elia Argentieri https://github.com/Elinvention/gnome-shell-extension-nasa-apod

import Gtk from 'gi://Gtk';
import Gdk from 'gi://Gdk';
import Gio from 'gi://Gio';
import Soup from 'gi://Soup';
import Adw from 'gi://Adw';
import {ExtensionPreferences, gettext as _} from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js';
import * as Config from 'resource:///org/gnome/Shell/Extensions/js/misc/config.js';
import * as Utils from './utils.js';
import Carousel from './carousel.js';

const BingImageURL = Utils.BingImageURL;

var DESKTOP_SCHEMA = 'org.gnome.desktop.background';

var PREFS_DEFAULT_WIDTH = 950;
var PREFS_DEFAULT_HEIGHT = 950;

export default class BingWallpaperExtensionPreferences extends ExtensionPreferences {
    fillPreferencesWindow(window) {
        // formally globals
        let settings = this.getSettings(Utils.BING_SCHEMA);
        let desktop_settings = this.getSettings(Utils.DESKTOP_SCHEMA);

        window.set_default_size(PREFS_DEFAULT_WIDTH, PREFS_DEFAULT_HEIGHT);

        let icon_image = null;
        let provider = new Gtk.CssProvider();

        let carousel = null;
        let httpSession = null;

        let log = (msg) => { // avoids need for globals
            if (settings.get_boolean('debug-logging'))
                console.log("BingWallpaper extension: " + msg); // disable to keep the noise down in journal
        }

        // Prepare labels and controls
        let buildable = new Gtk.Builder();
        // GTK4 removes some properties, and builder breaks when it sees them
        buildable.add_from_file( this.dir.get_path() + '/ui/Settings4.ui' );
        provider.load_from_path(this.dir.get_path() + '/ui/prefs.css');
        Gtk.StyleContext.add_provider_for_display(
            Gdk.Display.get_default(),
            provider,
            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);

        let box = buildable.get_object('prefs_widget');

        // fix size of prefs window in GNOME shell 40+ (but super racy, so is unreliable)

        buildable.get_object('extension_version').set_text(this.metadata.version.toString());
        buildable.get_object('extension_name').set_text(this.metadata.name.toString());

        // assign variables to UI objects we've loaded
        let hideSwitch = buildable.get_object('hide');
        let iconEntry = buildable.get_object('icon');
        let notifySwitch = buildable.get_object('notify');
        let bgSwitch = buildable.get_object('background');
        let styleEntry = buildable.get_object('background_style');
        let fileChooserBtn = buildable.get_object('download_folder');
        let fileChooser = buildable.get_object('file_chooser'); // this should only exist on Gtk4
        let folderOpenBtn = buildable.get_object('button_open_download_folder');
        let marketEntry = buildable.get_object('market');
        let resolutionEntry = buildable.get_object('resolution');
        let historyEntry = buildable.get_object('history');
        icon_image = buildable.get_object('icon_image');
        let overrideSwitch = buildable.get_object('lockscreen_override');
        let strengthEntry = buildable.get_object('entry_strength');
        let brightnessEntry = buildable.get_object('entry_brightness');
        let debugSwitch = buildable.get_object('debug_switch');
        let revertSwitch = buildable.get_object('revert_switch');
        let unsafeSwitch = buildable.get_object('unsafe_switch');
        let randomIntervalEntry = buildable.get_object('entry_random_interval');
        let change_log = buildable.get_object('change_log');
        let buttonGDMdefault = buildable.get_object('button_default_gnome');
        let buttonnoblur = buildable.get_object('button_no_blur');
        let buttonslightblur = buildable.get_object('button_slight_blur');
        let buttonImportData = buildable.get_object('button_json_import');
        let buttonExportData = buildable.get_object('button_json_export');
        let switchAlwaysExport = buildable.get_object('always_export_switch');
        let switchEnableShuffle = buildable.get_object('shuffle_enabled_switch');
        let entryShuffleMode = buildable.get_object('shuffle_mode_combo');
        let carouselFlowBox = (Gtk.get_major_version() == 4) ? buildable.get_object('carouselFlowBox'): null;

        try {
            httpSession = new Soup.Session();
            httpSession.user_agent = 'User-Agent: Mozilla/5.0 (X11; GNOME Shell/' + Config.PACKAGE_VERSION + '; Linux x86_64; +https://github.com/neffo/bing-wallpaper-gnome-extension ) BingWallpaper Gnome Extension/' + this.metadata.version;
        }
        catch (e) {
            log("Error creating httpSession: " + e);
        }

        // check that these are valid (can be edited through dconf-editor)
        Utils.validate_resolution(settings);
        Utils.validate_icon(settings, this.path, icon_image);

        // Indicator & notifications
        settings.bind('hide', hideSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('notify', notifySwitch, 'active', Gio.SettingsBindFlags.DEFAULT);

        // add markets to dropdown list (aka a GtkComboText)
        Utils.icon_list.forEach((iconname, index) => {
            iconEntry.append(iconname, iconname);
        });

        // user selectable indicator icons
        settings.bind('icon-name', iconEntry, 'active_id', Gio.SettingsBindFlags.DEFAULT);
        settings.connect('changed::icon-name', () => {
            Utils.validate_icon(settings, this.path, icon_image);
        });
        iconEntry.set_active_id(settings.get_string('icon-name'));

        // connect switches to settings changes
        settings.bind('set-background', bgSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('debug-logging', debugSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('revert-to-current-image', revertSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('override-unsafe-wayland', unsafeSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('random-interval', randomIntervalEntry, 'value', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('always-export-bing-json', switchAlwaysExport, 'active', Gio.SettingsBindFlags.DEFAULT);

        // button opens Nautilus at our image folder
        folderOpenBtn.connect('clicked', (widget) => {
            Utils.openImageFolder(settings);
        });

        // we populate the tab (gtk4+, gnome 40+), this was previously a button to open a new window in gtk3
        carousel = new Carousel(settings, null, null, carouselFlowBox, this.dir.get_path()); // auto load carousel

        // this is intended for migrating image folders between computers (or even sharing) or backups
        // we export the Bing JSON data to the image directory, so this folder becomes portable
        buttonImportData.connect('clicked', () => {
            Utils.importBingJSON(settings);
        });
        buttonExportData.connect('clicked', () => {
            Utils.exportBingJSON(settings);
        });

        //download folder
        fileChooserBtn.set_label(Utils.getWallpaperDir(settings));

        fileChooserBtn.connect('clicked', (widget) => {
            let parent = widget.get_root();
            let curWallpaperDir = Gio.File.new_for_path(Utils.getWallpaperDir(settings));
            fileChooser.set_current_folder(curWallpaperDir.get_parent());
            fileChooser.set_action(Gtk.FileChooserAction.SELECT_FOLDER);
            fileChooser.set_transient_for(parent);
            fileChooser.set_accept_label(_('Select folder'));
            fileChooser.show();
        });

        fileChooser.connect('response', (widget, response) => {
            if (response !== Gtk.ResponseType.ACCEPT) {
                return;
            }
            let fileURI = fileChooser.get_file().get_path().replace('file://', '');
            fileChooserBtn.set_label(fileURI);
            Utils.moveImagesToNewFolder(settings, Utils.getWallpaperDir(settings), fileURI);
            Utils.setWallpaperDir(settings, fileURI);
        });

        // in Gtk 4 instead we use a DropDown, but we need to treat it a bit special
        let market_grid = buildable.get_object('market_grid');
        marketEntry = Gtk.DropDown.new_from_strings(Utils.marketName);
        marketEntry.set_selected(Utils.markets.indexOf(settings.get_string('market')));
        market_grid.attach(marketEntry, 1, 0, 1, 2);
        marketEntry.connect('notify::selected-item', () => {
            let id = marketEntry.get_selected();
            settings.set_string('market', Utils.markets[id]);
        });

        settings.connect('changed::market', () => {
            marketEntry.set_selected(Utils.markets.indexOf(settings.get_string('market')));
        });

        settings.connect('changed::download-folder', () => {
            fileChooserBtn.set_label(Utils.getWallpaperDir(settings));
        });


        // Resolution
        Utils.resolutions.forEach((res) => { // add res to dropdown list (aka a GtkComboText)
            resolutionEntry.append(res, res);
        });
        
        settings.bind('resolution', resolutionEntry, 'active_id', Gio.SettingsBindFlags.DEFAULT);

        settings.connect('changed::resolution', () => {
            Utils.validate_resolution(settings);
        });

        // shuffle modes
        settings.bind('random-mode-enabled', switchEnableShuffle, 'active', Gio.SettingsBindFlags.DEFAULT);
        Utils.randomIntervals.forEach((x) => {
            entryShuffleMode.append(x.value, _(x.title));
        });
        settings.bind('random-interval-mode', entryShuffleMode, 'active_id', Gio.SettingsBindFlags.DEFAULT);

        // selected image can no longer be changed through a dropdown (didn't scale)
        settings.bind('selected-image', historyEntry, 'label', Gio.SettingsBindFlags.DEFAULT);
        settings.connect('changed::selected-image', () => {
            Utils.validate_imagename(settings);
        });
        
        // background styles (e.g. zoom or span)
        Utils.backgroundStyle.forEach((style) => {
            styleEntry.append(style, style);
        });
        desktop_settings.bind('picture-options', styleEntry, 'active_id', Gio.SettingsBindFlags.DEFAULT);
    
        // GDM3 lockscreen blur override
        settings.bind('override-lockscreen-blur', overrideSwitch, 'active', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('lockscreen-blur-strength', strengthEntry, 'value', Gio.SettingsBindFlags.DEFAULT);
        settings.bind('lockscreen-blur-brightness', brightnessEntry, 'value', Gio.SettingsBindFlags.DEFAULT);

        // add a couple of preset buttons
        buttonGDMdefault.connect('clicked', (widget) => {
            Utils.set_blur_preset(settings, Utils.PRESET_GNOME_DEFAULT);
        });
        buttonnoblur.connect('clicked', (widget) => {
            Utils.set_blur_preset(settings, Utils.PRESET_NO_BLUR);
        });
        buttonslightblur.connect('clicked', (widget) => {
            Utils.set_blur_preset(settings, Utils.PRESET_SLIGHT_BLUR);
        });

        // fetch
        if (httpSession)
            Utils.fetch_change_log(this.metadata.version.toString(), change_log, httpSession);

        const page = new Adw.PreferencesPage();
        const group = new Adw.PreferencesGroup();

        group.add(box);
        page.add(group);

        window.add(page);
    }
}