/**
 * Zavlahovy cuklus
 */
//
// Created by MightyPork on 2023/04/09.
//

#include <stdio.h>
#include "app_gui.h"
#include "gui_event.h"
#include "app_io.h"
#include "app_config.h"

#define MIN_CYCLE_TIME_S 70 // more than 60

static int phase = 0;
static uint32_t phase_seconds = 0;
static uint32_t phase_seconds_max = 0;

static void end_cycle()
{
    open_valve(0);
}

static void start_branch()
{
    phase_seconds_max = ((uint32_t) app_config.circuit_base_time_s * (uint32_t) app_config.circuit_time_percent[phase]) / 100;
    open_valve(phase + 1);
}

void screen_cyklus(GuiEvent event)
{
    switch (event) {
        case GUI_EVENT_SCREEN_INIT:
            phase = 0;
            phase_seconds = 0;
            s_app.last_cycle_time.hour = s_app.rtc_time.hour;
            s_app.last_cycle_time.minute = s_app.rtc_time.minute;
            s_app.cycle_time_checking = true;
            start_branch();
            break;

        case GUI_EVENT_SCREEN_TICK_1S:
            phase_seconds += 1;

            if (phase_seconds >= phase_seconds_max) {
                phase += 1;
                if (phase >= CIRCUIT_COUNT) {
                    end_cycle();
                    switch_screen(screen_home, true);
                    return;
                }

                start_branch();
                phase_seconds = 0;
            }
            request_paint();
            break;

        case GUI_EVENT_PAINT:
            LcdBuffer_Write(&lcd, 0, 0, "==ZÁVLAHOVÝ CYKLUS==");
            LcdBuffer_Write(&lcd, 3, 0, "🅳 Ukončit");

            snprintf(sbuf, sbuf_len, "Okruh %d/%d  %3d/%d s   ", phase + 1, 4, phase_seconds, phase_seconds_max);
            LcdBuffer_Write(&lcd, 1, 0, sbuf);

            uint32_t pieces = (phase_seconds * 40) / phase_seconds_max;

            char *buf = sbuf;
            for (int i = 0; i < 20; i++) {
                if ((i * 2 + 1) == pieces) {
                    buf += sprintf(buf, "▌");
                } else if (i * 2 < pieces) {
                    buf += sprintf(buf, "█");
                } else {
                    buf += sprintf(buf, " ");
                }
            }
            LcdBuffer_Write(&lcd, 2, 0, sbuf);
            break;

        case GUI_EVENT_KEY_D:
            end_cycle();
            switch_screen(screen_home, true);
            return;
    }
}