/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * Copyright (c) 2022, the SerenityOS developers.
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include "Resources.h"
#include "UndoSelection.h"
#include <LibGUI/ActionGroup.h>
#include <LibGUI/FilteringProxyModel.h>
#include <LibGUI/GlyphMapWidget.h>
#include <LibGUI/UndoStack.h>
#include <LibGUI/Widget.h>
#include <LibGfx/Font/BitmapFont.h>

namespace FontEditor {

extern Resources g_resources;

class GlyphEditorWidget;

class MainWidget final : public GUI::Widget {
    C_OBJECT(MainWidget)
public:
    static ErrorOr<NonnullRefPtr<MainWidget>> try_create();

    virtual ~MainWidget() override = default;

    void show_error(Error, StringView action, StringView filename = {});
    void reset();

    ErrorOr<void> initialize(StringView path, RefPtr<Gfx::BitmapFont>&&);
    ErrorOr<void> initialize_menubar(GUI::Window&);

    ErrorOr<void> open_file(StringView, NonnullOwnPtr<Core::File>);
    ErrorOr<void> save_file(StringView, NonnullOwnPtr<Core::File>);
    bool request_close();

    String const& path() { return m_path; }

private:
    MainWidget() = default;

    ErrorOr<void> create_widgets();
    ErrorOr<void> create_actions();
    ErrorOr<void> create_models();
    ErrorOr<void> create_toolbars();
    ErrorOr<void> create_undo_stack();
    ErrorOr<RefPtr<GUI::Window>> create_preview_window();

    virtual void drag_enter_event(GUI::DragEvent&) override;
    virtual void drop_event(GUI::DropEvent&) override;

    void undo();
    void redo();
    void restore_state();
    void did_modify_font();

    void update_action_text();
    void update_statusbar();
    void update_preview();
    void update_title();

    void set_scale_and_save(i32);
    void set_actions_enabled(bool);
    void set_widgets_enabled(bool);

    ErrorOr<void> copy_selected_glyphs();
    ErrorOr<void> cut_selected_glyphs();
    void paste_glyphs();
    void delete_selected_glyphs();

    void push_undo(StringView action_text);
    void reset_selection();

    RefPtr<GUI::GlyphMapWidget> m_glyph_map_widget;
    RefPtr<GlyphEditorWidget> m_glyph_editor_widget;

    RefPtr<GUI::Action> m_new_action;
    RefPtr<GUI::Action> m_open_action;
    RefPtr<GUI::Action> m_save_action;
    RefPtr<GUI::Action> m_save_as_action;

    RefPtr<GUI::Action> m_cut_action;
    RefPtr<GUI::Action> m_copy_action;
    RefPtr<GUI::Action> m_paste_action;
    RefPtr<GUI::Action> m_delete_action;

    RefPtr<GUI::Action> m_copy_text_action;
    RefPtr<GUI::Action> m_select_all_action;

    RefPtr<GUI::Action> m_undo_action;
    RefPtr<GUI::Action> m_redo_action;
    RefPtr<UndoSelection> m_undo_selection;
    OwnPtr<GUI::UndoStack> m_undo_stack;

    RefPtr<GUI::Action> m_go_to_glyph_action;
    RefPtr<GUI::Action> m_previous_glyph_action;
    RefPtr<GUI::Action> m_next_glyph_action;

    RefPtr<GUI::Action> m_open_preview_action;
    RefPtr<GUI::Action> m_show_metadata_action;
    RefPtr<GUI::Action> m_show_unicode_blocks_action;
    RefPtr<GUI::Action> m_show_toolbar_action;
    RefPtr<GUI::Action> m_show_statusbar_action;
    RefPtr<GUI::Action> m_highlight_modifications_action;
    RefPtr<GUI::Action> m_show_system_emoji_action;

    GUI::ActionGroup m_glyph_editor_scale_actions;
    RefPtr<GUI::Action> m_scale_five_action;
    RefPtr<GUI::Action> m_scale_ten_action;
    RefPtr<GUI::Action> m_scale_fifteen_action;

    GUI::ActionGroup m_glyph_tool_actions;
    RefPtr<GUI::Action> m_move_glyph_action;
    RefPtr<GUI::Action> m_paint_glyph_action;

    RefPtr<GUI::Action> m_flip_horizontal_action;
    RefPtr<GUI::Action> m_flip_vertical_action;
    RefPtr<GUI::Action> m_rotate_clockwise_action;
    RefPtr<GUI::Action> m_rotate_counterclockwise_action;

    RefPtr<GUI::Statusbar> m_statusbar;
    RefPtr<GUI::ToolbarContainer> m_toolbar_container;
    RefPtr<GUI::Widget> m_unicode_block_container;
    RefPtr<GUI::Widget> m_width_control_container;
    RefPtr<GUI::ComboBox> m_weight_combobox;
    RefPtr<GUI::ComboBox> m_slope_combobox;
    RefPtr<GUI::SpinBox> m_spacing_spinbox;
    RefPtr<GUI::SpinBox> m_baseline_spinbox;
    RefPtr<GUI::SpinBox> m_mean_line_spinbox;
    RefPtr<GUI::SpinBox> m_presentation_spinbox;
    RefPtr<GUI::SpinBox> m_glyph_editor_width_spinbox;
    RefPtr<GUI::CheckBox> m_glyph_editor_present_checkbox;
    RefPtr<GUI::TextBox> m_name_textbox;
    RefPtr<GUI::TextBox> m_family_textbox;
    RefPtr<GUI::TextBox> m_search_textbox;
    RefPtr<GUI::CheckBox> m_fixed_width_checkbox;
    RefPtr<GUI::GroupBox> m_font_metadata_groupbox;
    RefPtr<GUI::ListView> m_unicode_block_listview;
    RefPtr<GUI::Model> m_unicode_block_model;
    RefPtr<GUI::FilteringProxyModel> m_filter_model;
    RefPtr<GUI::Menu> m_context_menu;

    RefPtr<GUI::Label> m_preview_label;
    RefPtr<GUI::TextBox> m_preview_textbox;
    RefPtr<GUI::Window> m_font_preview_window;

    String m_path;
    RefPtr<Gfx::BitmapFont> m_font;
    Vector<String> m_font_weight_list;
    Vector<String> m_font_slope_list;
    Vector<String> m_unicode_block_list;
    Unicode::CodePointRange m_range { 0x0000, 0x10FFFF };
    bool m_initialized { false };
};

}