/*
 * Copyright (c) 2022, the SerenityOS developers.
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include "EffectsSettingsWidget.h"
#include <Applications/DisplaySettings/EffectsSettingsGML.h>
#include <LibCore/ConfigFile.h>
#include <LibGUI/CheckBox.h>
#include <LibGUI/ComboBox.h>
#include <LibGUI/ConnectionToWindowServer.h>
#include <LibGUI/ItemListModel.h>

namespace GUI {

namespace DisplaySettings {

ErrorOr<NonnullRefPtr<EffectsSettingsWidget>> EffectsSettingsWidget::try_create()
{
    auto effects_settings_widget = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) EffectsSettingsWidget()));
    TRY(effects_settings_widget->setup_interface());
    return effects_settings_widget;
}

ErrorOr<void> EffectsSettingsWidget::setup_interface()
{
    TRY(load_from_gml(effects_settings_gml));

    m_geometry_combobox = find_descendant_of_type_named<ComboBox>("geometry_combobox");
    m_geometry_combobox->set_only_allow_values_from_model(true);
    m_geometry_combobox->on_change = [this](auto&, auto&) {
        m_system_effects.set_geometry(static_cast<ShowGeometry>(m_geometry_combobox->selected_index()));
        set_modified(true);
    };

    m_tile_window_combobox = find_descendant_of_type_named<ComboBox>("tile_window_combobox");
    m_tile_window_combobox->set_only_allow_values_from_model(true);
    m_tile_window_combobox->on_change = [this](auto&, auto&) {
        m_system_effects.set_tile_window(static_cast<WindowServer::TileWindow>(m_tile_window_combobox->selected_index()));
        set_modified(true);
    };

    if (auto result = load_settings(); result.is_error()) {
        warnln("Failed to load [Effects] from WindowServer.ini");
        return {};
    }

    auto& animate_menus = *find_descendant_of_type_named<GUI::CheckBox>("animate_menus_checkbox");
    animate_menus.set_checked(m_system_effects.animate_menus());
    animate_menus.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::AnimateMenus, checked))
            set_modified(true);
    };
    auto& flash_menus = *find_descendant_of_type_named<GUI::CheckBox>("flash_menus_checkbox");
    flash_menus.set_checked(m_system_effects.flash_menus());
    flash_menus.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::FlashMenus, checked))
            set_modified(true);
    };
    auto& animate_windows = *find_descendant_of_type_named<GUI::CheckBox>("animate_windows_checkbox");
    animate_windows.set_checked(m_system_effects.animate_windows());
    animate_windows.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::AnimateWindows, checked))
            set_modified(true);
    };
    auto& smooth_scrolling = *find_descendant_of_type_named<GUI::CheckBox>("smooth_scrolling_checkbox");
    smooth_scrolling.set_checked(m_system_effects.smooth_scrolling());
    smooth_scrolling.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::SmoothScrolling, checked))
            set_modified(true);
    };
    auto& tab_accents = *find_descendant_of_type_named<GUI::CheckBox>("tab_accents_checkbox");
    tab_accents.set_checked(m_system_effects.tab_accents());
    tab_accents.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::TabAccents, checked))
            set_modified(true);
    };
    auto& splitter_knurls = *find_descendant_of_type_named<GUI::CheckBox>("splitter_knurls_checkbox");
    splitter_knurls.set_checked(m_system_effects.splitter_knurls());
    splitter_knurls.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::SplitterKnurls, checked))
            set_modified(true);
    };
    auto& tooltips = *find_descendant_of_type_named<GUI::CheckBox>("tooltips_checkbox");
    tooltips.set_checked(m_system_effects.tooltips());
    tooltips.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::Tooltips, checked))
            set_modified(true);
    };
    auto& menu_shadow = *find_descendant_of_type_named<GUI::CheckBox>("menu_shadow_checkbox");
    menu_shadow.set_checked(m_system_effects.menu_shadow());
    menu_shadow.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::MenuShadow, checked))
            set_modified(true);
    };
    auto& window_shadow = *find_descendant_of_type_named<GUI::CheckBox>("window_shadow_checkbox");
    window_shadow.set_checked(m_system_effects.window_shadow());
    window_shadow.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::WindowShadow, checked))
            set_modified(true);
    };
    auto& tooltip_shadow = *find_descendant_of_type_named<GUI::CheckBox>("tooltip_shadow_checkbox");
    tooltip_shadow.set_checked(m_system_effects.tooltip_shadow());
    tooltip_shadow.on_checked = [this](bool checked) {
        if (m_system_effects.set_effect(Effects::TooltipShadow, checked))
            set_modified(true);
    };

    return {};
}

ErrorOr<void> EffectsSettingsWidget::load_settings()
{
    auto ws_config = TRY(Core::ConfigFile::open("/etc/WindowServer.ini"));
    Vector<bool> effects = {
        ws_config->read_bool_entry("Effects", "AnimateMenus", true),
        ws_config->read_bool_entry("Effects", "FlashMenus", true),
        ws_config->read_bool_entry("Effects", "AnimateWindows", true),
        ws_config->read_bool_entry("Effects", "SmoothScrolling", true),
        ws_config->read_bool_entry("Effects", "TabAccents", true),
        ws_config->read_bool_entry("Effects", "SplitterKnurls", true),
        ws_config->read_bool_entry("Effects", "Tooltips", true),
        ws_config->read_bool_entry("Effects", "MenuShadow", true),
        ws_config->read_bool_entry("Effects", "WindowShadow", true),
        ws_config->read_bool_entry("Effects", "TooltipShadow", true),
    };
    auto geometry = WindowServer::ShowGeometryTools::string_to_enum(ws_config->read_entry("Effects", "ShowGeometry", "OnMoveAndResize"));
    auto tile_window = WindowServer::TileWindowTools::string_to_enum(ws_config->read_entry("Effects", "TileWindow", "ShowTileOverlay"));
    m_system_effects = { effects, geometry, tile_window };

    static constexpr Array geometry_list = {
        "On Move and Resize"sv,
        "On Move only"sv,
        "On Resize only"sv,
        "Never"sv
    };
    for (size_t i = 0; i < geometry_list.size(); ++i)
        TRY(m_geometry_list.try_append(TRY(String::from_utf8(geometry_list[i]))));
    m_geometry_combobox->set_model(ItemListModel<String>::create(m_geometry_list));
    m_geometry_combobox->set_selected_index(to_underlying(m_system_effects.geometry()));

    static constexpr Array tile_window_list = {
        "Tile immediately"sv,
        "Show tile overlay"sv,
        "Never"sv
    };
    for (size_t i = 0; i < tile_window_list.size(); ++i)
        TRY(m_tile_window_list.try_append(TRY(String::from_utf8(tile_window_list[i]))));
    m_tile_window_combobox->set_model(ItemListModel<String>::create(m_tile_window_list));
    m_tile_window_combobox->set_selected_index(static_cast<size_t>(m_system_effects.tile_window()));

    return {};
}

void EffectsSettingsWidget::apply_settings()
{
    ConnectionToWindowServer::the().async_set_system_effects(m_system_effects.effects(), to_underlying(m_system_effects.geometry()), to_underlying(m_system_effects.tile_window()));
}

}

}