/* 
*  BSD 2-Clause “Simplified” License
*  Copyright (c) 2019, Aldrik Ramaekers, aldrik.ramaekers@protonmail.com
*  All rights reserved.
*/

void reset_status_text();
void set_status_text_to_finished_search();

void settings_page_create()
{
	global_settings_page.use_gpu = global_use_gpu;
	global_settings_page.active = false;
	global_settings_page.font_small = load_font(mono_ttf, 15);
	global_settings_page.logo_img = load_bitmap(logo_64_bmp);
	global_settings_page.keyboard = keyboard_input_create();
	global_settings_page.mouse = mouse_input_create();
    
	camera cam;
	cam.x = 0;
	cam.y = 0;
	cam.rotation = 0;
	
	global_settings_page.camera = cam;
    
	global_settings_page.cb_use_gpu = ui_create_checkbox(global_use_gpu);
	global_settings_page.btn_close = ui_create_button();
	global_settings_page.btn_save = ui_create_button();
	global_settings_page.dropdown_language = ui_create_dropdown();
	global_settings_page.dropdown_doubleclick = ui_create_dropdown();
	global_settings_page.textbox_max_file_size = ui_create_textbox(9);
	global_settings_page.textbox_max_thread_count = ui_create_textbox(5);
	global_settings_page.checkbox_parallelize_search = ui_create_checkbox(false);
}

static void load_current_settings_into_ui()
{
	global_settings_page.use_gpu = global_use_gpu;
	global_settings_page.cb_use_gpu.state = global_settings_page.use_gpu;
}

void settings_page_update_render()
{
	if (global_settings_page.window.has_focus)
		global_settings_page.window.do_draw = true;
	
	// switch to cpu/gpu
	if (global_use_gpu != global_settings_page.use_gpu)
	{
		global_use_gpu = global_settings_page.use_gpu;
		platform_setup_backbuffer(main_window);
		platform_setup_renderer();
		assets_switch_render_method();
	}
	
	if (global_settings_page.active)
	{
		platform_window_make_current(&global_settings_page.window);
		platform_handle_events(&global_settings_page.window, &global_settings_page.mouse, &global_settings_page.keyboard);
		platform_set_cursor(&global_settings_page.window, CURSOR_DEFAULT);
		
		if (global_settings_page.window.do_draw)
		{
			global_settings_page.window.do_draw = false;
			
			render_clear(&global_settings_page.window);
			
			camera_apply_transformations(&global_settings_page.window, &global_settings_page.camera);
			
			global_ui_context.layout.active_window = &global_settings_page.window;
			global_ui_context.keyboard = &global_settings_page.keyboard;
			global_ui_context.mouse = &global_settings_page.mouse;
			
			ui_begin(3);
			{
				ui_begin_menu_bar();
				{
					if (ui_push_menu(localize("interface")))
					{
						global_settings_page.selected_tab_index = 1;
					}
				}
				ui_end_menu_bar();
				
				ui_push_separator();
				if (global_settings_page.selected_tab_index == 1)
				{
					ui_block_begin(LAYOUT_HORIZONTAL);
					{
						ui_push_text(localize("language"));
					}
					ui_block_end();
					
					ui_block_begin(LAYOUT_HORIZONTAL);
					{
						if (ui_push_dropdown(&global_settings_page.dropdown_language, locale_get_name()))
						{
							for (s32 i = 0; i < global_localization.mo_files.length; i++)
							{
								mo_file *file = array_at(&global_localization.mo_files, i);
								
								if (ui_push_dropdown_item(file->icon, file->locale_full, i))
								{
									set_locale(file->locale_id);
									platform_window_set_title(&global_settings_page.window,
															  localize("mo_edit_settings"));
								}
							}
						}
					}
					ui_block_end();
					
					ui_block_begin(LAYOUT_HORIZONTAL);
					{
						if (ui_push_checkbox(&global_settings_page.cb_use_gpu, localize("use_gpu")))
						{
						}
					}
					ui_block_end();
					
					ui_block_begin(LAYOUT_HORIZONTAL);
					{
						if (ui_push_hypertext_link(localize("copy_config_path")))
						{
							char buffer[PATH_MAX];
							platform_set_clipboard(main_window, get_config_save_location(buffer));
							push_notification(localize("copied_to_clipboard"));
						}
					}
					ui_block_end();
				}
				
				global_ui_context.layout.offset_y = global_settings_page.window.height - 33;
				
				ui_block_begin(LAYOUT_HORIZONTAL);
				{
					if (ui_push_button(&global_settings_page.btn_close, localize("close")))
					{
						global_settings_page.active = false;
						set_locale(global_settings_page.current_locale_id);
						settings_page_hide_without_save();
					}
					if (ui_push_button(&global_settings_page.btn_close, localize("save")))
					{
						global_settings_page.active = false;
						global_settings_page.use_gpu = global_settings_page.cb_use_gpu.state;
						settings_page_hide();
						return;
					}
				}
				ui_block_end();
			}
			ui_end();
			
			if (!global_settings_page.window.is_open)
			{
				global_settings_page.active = false;
				settings_page_hide_without_save();
				return;
			}
			
			// version nr
			{
				
				s32 w = calculate_text_width(global_settings_page.font_small, VERSION);
				render_text(global_settings_page.font_small, global_settings_page.window.width-w - 10,
							global_settings_page.window.height-global_settings_page.font_small->px_h - 10, VERSION, rgb(120,120,120));
			}
			
			platform_window_swap_buffers(&global_settings_page.window);
		}
	}
}

void settings_page_show()
{
	if (platform_window_is_valid(&global_settings_page.window)) return;
	
	load_current_settings_into_ui();
	
	global_settings_page.window = platform_open_window(localize("mo_edit_settings"), 
													   350, 240, 350, 240, 350, 240);
	
	settings_window = &global_settings_page.window;
	
	global_settings_page.active = true;
	global_settings_page.selected_tab_index = 1;
	global_settings_page.current_locale_id = locale_get_id();
	
	platform_set_icon(&global_settings_page.window, global_settings_page.logo_img);
}

void settings_page_hide()
{
	if (platform_window_is_valid(&global_settings_page.window))
	{
		settings_window = 0;
		
		platform_destroy_window(&global_settings_page.window);
		
		global_settings_page.btn_close.state = false;
		global_settings_page.btn_save.state = false;
		global_settings_page.active = false;
		
		global_settings_page.mouse.x = -1;
		global_settings_page.mouse.y = -1;
	}
}

void settings_page_hide_without_save()
{
	if (platform_window_is_valid(&global_settings_page.window))
	{
		global_settings_page.active = false;
		set_locale(global_settings_page.current_locale_id);
		settings_page_hide();
	}
}

void settings_page_destroy()
{
	keyboard_input_destroy(&global_settings_page.keyboard);
	assets_destroy_font(global_settings_page.font_small);
	assets_destroy_image(global_settings_page.logo_img);
	
	if (platform_window_is_valid(&global_settings_page.window))
		platform_destroy_window(&global_settings_page.window);
}