#include "apps.h"
#include "os_gfx.h"
#include "os_status.h"
#include "os_oled.h"
#include <stdio.h>
#include "esp_system.h"

#define SETTINGS_COUNT 4
static const char *s_menu_items[SETTINGS_COUNT] = {
    "Contrast",
    "Invert",
    "Status Bar",
    "Reboot"
};

static size_t s_selected_idx = 0;
static uint8_t s_contrast_level = 3;
static bool s_inverted = false;

static void apply_contrast(void)
{
    uint8_t val = 255;
    if (s_contrast_level == 0) val = 30;
    else if (s_contrast_level == 1) val = 100;
    else if (s_contrast_level == 2) val = 180;
    oled_driver_set_contrast(val);
}

static void settings_init(void)
{
    s_selected_idx = 0;
    s_contrast_level = 3;
    s_inverted = false;
}

static void settings_enter(void)
{
}

static void settings_update(uint32_t delta_ms)
{
    sys_status_t status;
    sys_status_get(&status);
    sys_gfx_draw_status_bar(&status);

    sys_gfx_draw_menu(9, s_menu_items, SETTINGS_COUNT, s_selected_idx);
    sys_gfx_draw_action_bar("C:NEXT", "H:TOGGLE");
}

static void settings_handle_input(input_action_t action)
{
    if (action == INPUT_ACTION_CLICK) {
        s_selected_idx = (s_selected_idx + 1) % SETTINGS_COUNT;
    } else if (action == INPUT_ACTION_DOUBLE_CLICK) {
        if (s_selected_idx == 0) s_selected_idx = SETTINGS_COUNT - 1;
        else s_selected_idx--;
    } else if (action == INPUT_ACTION_LONG_PRESS) {
        switch (s_selected_idx) {
            case 0:
                s_contrast_level = (s_contrast_level + 1) % 4;
                apply_contrast();
                sys_gfx_show_toast("Contrast Chg", 600);
                break;
            case 1:
                s_inverted = !s_inverted;
                oled_driver_set_invert(s_inverted);
                sys_gfx_show_toast(s_inverted ? "Inverted" : "Normal", 600);
                break;
            case 2:
                {
                    bool vis = sys_status_is_status_bar_visible();
                    sys_status_set_status_bar_visible(!vis);
                    sys_gfx_show_toast(!vis ? "Bar: ON" : "Bar: OFF", 600);
                }
                break;
            case 3:
                sys_gfx_show_toast("Rebooting...", 1000);
                sys_gfx_flush();
                esp_restart();
                break;
            default:
                break;
        }
    }
}

static void settings_exit(void)
{
}

const sys_app_t g_app_settings = {
    .id = "settings",
    .name = "Settings",
    .init = settings_init,
    .enter = settings_enter,
    .update = settings_update,
    .handle_input = settings_handle_input,
    .exit = settings_exit,
};