#include <stdio.h>
#include "pico/stdlib.h"

#include "main.hpp"
// For time format:
#include "../../globals.hpp"

// TODO in this app
// - 

// Time as string
// Adapted from pico-sdk/scr/common/pico_util/datetime.c
void app_main_clock::time_as_str(char *buf, uint buf_size, const datetime_t *t) {
    int hour;
    if (g_user.time_format) // 24 hour format
        hour = t->hour;
    else { // 12 hour format
        hour = t->hour % 12;
        if (hour == 0) hour = 12;
    }
    snprintf(buf,
            buf_size,
            "%02d:%02d ",
            hour, t->min, t->sec);
};

void app_main_clock::date_as_str(char *buf, uint buf_size, const datetime_t *t) {
    static const char *DATETIME_DOWS[7] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
    snprintf(buf,
            buf_size,
            "%02d-%02d-%02d %s",
            t->year,
            t->month,
            t->day,
            DATETIME_DOWS[t->dotw]);
};

void app_main_clock::show_datetime(Api *app_api) {
    char datetime_buf[256];
    char *datetime_str = &datetime_buf[0];
    datetime_t t;
    app_api->datetime_get(&t);

    // time
    time_as_str(datetime_str, sizeof(datetime_buf), &t);
    app_api->display_write_string(0,25,3, datetime_str, FONT_12x16, 0, 1);

    snprintf(datetime_str, sizeof(datetime_buf), "%02d", t.sec);
    app_api->display_write_string(0,87,4, datetime_str, FONT_8x8, 0, 1);

    // for 12 hour time
    if (!g_user.time_format) {
        bool is_pm = !(t.hour < 12);
        const char *indicator = is_pm? "PM" : "AM";
        app_api->display_write_string(0,98,2, indicator, FONT_8x8, 0, 1);
    }

    // date
    date_as_str(datetime_str, sizeof(datetime_buf), &t);
    app_api->gui_footer_text((std::string)datetime_str);
}

BaseApp::AppReturnValues app_main_clock::render(Api *app_api) {
    app_api->gui_header_text("Test clock", 17);
    show_datetime(app_api);

    return AppReturnValues::OK;
}

BaseApp::AppReturnValues app_main_clock::btn_pressed(Api *app_api, uint gpio, unsigned long delta) {
    return AppReturnValues::OK;
}

app_main_clock::app_main_clock(Api *app_api) {
    app_api->performance_set(Api::perf_modes::LOW_POWER);
}

BaseApp::AppReturnValues app_main_clock::bgrefresh(Api *app_api, bool in_foreground) {
    return AppReturnValues::OK;
}

app_main_clock::~app_main_clock() {
}