/*
 * MIT License
 *
 * Copyright (c) 2022 Joey Castillo
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "watch_utility.h"
#include "mars_time_face.h"

typedef struct {
    uint8_t hour;
    uint8_t minute;
    uint8_t second;
} mars_clock_hms_t;

static void _h_to_hms(mars_clock_hms_t *date_time, double h) {
	unsigned int seconds = (unsigned int)(h * 3600.0);
	date_time->hour = seconds / 3600;
	seconds = seconds % 3600;
	date_time->minute = floor(seconds / 60);
	date_time->second = round(seconds % 60);
}

static void _update(movement_settings_t *settings) {
    char buf[11];
    watch_date_time date_time = watch_rtc_get_date_time();
    uint32_t now = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
    double jdut = 2440587.5 + ((double)now / 86400.0);
    double jdtt = jdut + ((37.0 + 32.184) / 86400.0);
    double jd2k = jdtt - 2451545.0;
    double msd = ((jd2k - 4.5) / 1.0274912517) + 44796.0 - 0.0009626;
    double mtc = fmod(24 * msd, 24);
    mars_clock_hms_t mars_time;
    _h_to_hms(&mars_time, mtc);
    sprintf(&buf[0], "MC  %02d%02d%02d", mars_time.hour, mars_time.minute, mars_time.second);
    watch_set_colon();
    watch_set_indicator(WATCH_INDICATOR_24H);
    watch_display_string(buf, 0);
}

void mars_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
    (void) settings;
    if (*context_ptr == NULL) {
        *context_ptr = malloc(sizeof(mars_time_state_t));
        memset(*context_ptr, 0, sizeof(mars_time_state_t));
    }
}

void mars_time_face_activate(movement_settings_t *settings, void *context) {
    (void) settings;
    mars_time_state_t *state = (mars_time_state_t *)context;
    (void) state;
}

bool mars_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
    mars_time_state_t *state = (mars_time_state_t *)context;
    (void) state;

    switch (event.event_type) {
        case EVENT_ACTIVATE:
        case EVENT_TICK:
            _update(settings);
            break;
        case EVENT_MODE_BUTTON_UP:
            movement_move_to_next_face();
            break;
        case EVENT_LIGHT_BUTTON_UP:
            movement_illuminate_led();
            break;
        case EVENT_ALARM_BUTTON_UP:
            break;
        case EVENT_TIMEOUT:
            // TODO: make this lower power so we can avoid timeout
            movement_move_to_face(0);
            break;
        case EVENT_LOW_ENERGY_UPDATE:
            // TODO: low energy update
            // watch_start_tick_animation(500);
            break;
        default:
            break;
    }

    return true;
}

void mars_time_face_resign(movement_settings_t *settings, void *context) {
    (void) settings;
    (void) context;
}