/**
 * TODO file description
 */

#include <stdbool.h>
#include <string.h>
#include "app_gui.h"
#include "../lcd/lcdbuf.h"

struct State s_app = {};

struct LcdBuffer lcd = {};

/** Schedule paint (the screen func will be called with the PAINT event argument */
void request_paint() {
    s_app.paint_needed = true;
}

/** Draw the common overlay / HUD (with temperatures and heater status) */
static void draw_common_overlay();

char stmp[100];

/** Main loop */
void gui_init()
{
    switch_screen(screen_home, true);
    s_app.last_tick_time = timestamp();

    LcdBuffer_Init(&lcd, CGROM_A00, CGRAM_CZ);
}

void gui_loop_iter(GuiEvent message) {
    uint32_t tickNow = timestamp();

    // 10ms tick event
    if (tickNow - s_app.last_tick_time > 10) {
        s_app.screen(GUI_EVENT_SCREEN_TICK);
        s_app.last_tick_time = tickNow;
    }

    if (message != GUI_EVENT_NONE) {
        s_app.screen(message);
    }

    if (message >= 32) { // lazy shortcut so we dont have to list all of them
        // key was pressed
        input_sound_effect();
    }

    if (s_app.paint_needed) {
        s_app.paint_needed = false;

        draw_common_overlay();
        s_app.screen(GUI_EVENT_PAINT);

        // If there is anything to print, do it
        LcdBuffer_Flush(&lcd);
    }
}

/** Switch to a different screen handler.
 * If "init" is true, immediately call it with the init event. */
void switch_screen(screen_t pScreen, bool init) {
    s_app.screen = pScreen;

    LcdBuffer_Clear(&lcd);
    request_paint();

    if (init) {
        pScreen(GUI_EVENT_SCREEN_INIT);
    }
}

/** Draw GUI common to all screens */
static void draw_common_overlay() {
    // TODO
}

/** Play input sound effect if this is an input event */
void input_sound_effect() {
    // TODO
}