#include "ui_Settings.h"

#include "board_config.h"
#include "settings/settings_store.h"
#include "settings/settings_tabs.h"
#include "ui_handlers.h"

#include <stddef.h>

lv_obj_t *ui_Settings;
lv_obj_t *ui_Settings_sidebar;
lv_obj_t *ui_Settings_content;

static settings_tab_t s_active_tab = SETTINGS_TAB_SYSTEM;
static lv_obj_t *s_nav_buttons[4];

static lv_style_t s_style_sidebar_btn_active;
static lv_style_t s_style_content_bg;
static bool s_styles_inited;

static const char *s_tab_labels[] = {
    "System",
    "Display",
    "Audio",
    "Network",
};

static void init_styles(void)
{
    if (s_styles_inited) {
        return;
    }

    lv_style_init(&s_style_sidebar_btn_active);
    lv_style_set_bg_color(&s_style_sidebar_btn_active,
                          lv_palette_main(LV_PALETTE_BLUE));
    lv_style_set_bg_opa(&s_style_sidebar_btn_active, LV_OPA_COVER);

    lv_style_init(&s_style_content_bg);
    lv_style_set_bg_color(&s_style_content_bg,
                          lv_palette_lighten(LV_PALETTE_GREY, 2));
    lv_style_set_bg_opa(&s_style_content_bg, LV_OPA_COVER);

    s_styles_inited = true;
}

static void sidebar_update_highlight(settings_tab_t tab)
{
    for (size_t i = 0; i < 4; i++) {
        if (s_nav_buttons[i] == NULL) {
            continue;
        }
        if ((settings_tab_t)i == tab) {
            lv_obj_add_style(s_nav_buttons[i], &s_style_sidebar_btn_active, 0);
        } else {
            lv_obj_remove_style(s_nav_buttons[i], &s_style_sidebar_btn_active, 0);
        }
    }
}

settings_tab_t ui_Settings_get_active_tab(void)
{
    return s_active_tab;
}

void ui_Settings_switch_tab(settings_tab_t tab)
{
    settings_data_t buf = *settings_store_get();
    settings_tabs_collect(s_active_tab, &buf);
    settings_store_update(&buf);

    s_active_tab = tab;
    sidebar_update_highlight(tab);

    lv_obj_clean(ui_Settings_content);
    switch (tab) {
    case SETTINGS_TAB_SYSTEM:
        load_system_settings(ui_Settings_content, settings_store_get());
        break;
    case SETTINGS_TAB_DISPLAY:
        load_display_settings(ui_Settings_content, settings_store_get());
        break;
    case SETTINGS_TAB_AUDIO:
        load_audio_settings(ui_Settings_content, settings_store_get());
        break;
    case SETTINGS_TAB_NETWORK:
        load_network_settings(ui_Settings_content, settings_store_get());
        break;
    default:
        LV_ASSERT_MSG(false, "unexpected settings_tab_t");
        break;
    }
}

void ui_Settings_screen_init(void)
{
    init_styles();

    ui_Settings = lv_obj_create(NULL);
    lv_obj_set_size(ui_Settings, BOARD_LCD_LOGIC_H_RES, BOARD_LCD_LOGIC_V_RES);
    lv_obj_set_style_pad_all(ui_Settings, 2, 0);
    lv_obj_remove_flag(ui_Settings, LV_OBJ_FLAG_SCROLLABLE);

    ui_Settings_sidebar = lv_list_create(ui_Settings);
    lv_obj_set_size(ui_Settings_sidebar, 90, 170);
    lv_obj_set_pos(ui_Settings_sidebar, 0, 0);
    lv_obj_set_style_pad_all(ui_Settings_sidebar, 2, 0);
    lv_obj_set_style_pad_row(ui_Settings_sidebar, 2, 0);
    lv_obj_remove_flag(ui_Settings_sidebar, LV_OBJ_FLAG_SCROLLABLE);

    for (size_t i = 0; i < 4; i++) {
        s_nav_buttons[i] =
            lv_list_add_button(ui_Settings_sidebar, NULL, s_tab_labels[i]);
        lv_obj_set_size(s_nav_buttons[i], 86, 28);
        lv_obj_add_event_cb(s_nav_buttons[i], settings_on_tab_clicked,
                            LV_EVENT_CLICKED, (void *)(intptr_t)i);
    }

    lv_obj_t *save_btn = lv_button_create(ui_Settings);
    lv_obj_set_size(save_btn, 86, 28);
    lv_obj_set_pos(save_btn, 2, 138);
    lv_obj_t *save_label = lv_label_create(save_btn);
    lv_label_set_text(save_label, "Save");
    lv_obj_center(save_label);
    lv_obj_add_event_cb(save_btn, settings_on_save_clicked, LV_EVENT_CLICKED,
                        NULL);

    ui_Settings_content = lv_obj_create(ui_Settings);
    lv_obj_set_size(ui_Settings_content, 230, 170);
    lv_obj_set_pos(ui_Settings_content, 90, 0);
    lv_obj_set_style_pad_all(ui_Settings_content, 2, 0);
    lv_obj_add_style(ui_Settings_content, &s_style_content_bg, 0);
    lv_obj_remove_flag(ui_Settings_content, LV_OBJ_FLAG_SCROLLABLE);

    settings_store_load();
    settings_store_apply();

    s_active_tab = SETTINGS_TAB_SYSTEM;
    sidebar_update_highlight(s_active_tab);
    load_system_settings(ui_Settings_content, settings_store_get());
}

void ui_Settings_screen_destroy(void)
{
    if (ui_Settings != NULL) {
        lv_obj_del(ui_Settings);
        ui_Settings = NULL;
        ui_Settings_sidebar = NULL;
        ui_Settings_content = NULL;
    }
    for (size_t i = 0; i < 4; i++) {
        s_nav_buttons[i] = NULL;
    }
}