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

#include "main.hpp"

// TODO in this app
// - No need for ask_user_choice and user_choice to be a ptr as the app is now encapsulated in a class.

// 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) {
    snprintf(buf,
            buf_size,
            "%d:%02d:%02d ",
            t->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(0,10,3, datetime_str, FONT_12x16, 0, 1);

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

// Rendering of the app
BaseApp::AppReturnValues app_main_clock::render(Api *app_api) {
    app_api->gui_header_text("Test clock", 17);
    show_datetime(app_api);
    if (*ask_user_choice) {
        *user_choice = app_api->gui_popup_strchoice("Ohh!", "Make a good choice:", choices, 5, 0, -1, *user_choice);
        *ask_user_choice = false;
    }
    app_api->gui_footer_text(choices[*user_choice],0,1);

    if (*user_choice == 1)
        return AppReturnValues::CLOSE;
    else if (*user_choice == 2)
        return AppReturnValues::QUIT;

    return AppReturnValues::OK;
}

// Interpretation of button inputs
BaseApp::AppReturnValues app_main_clock::btnpressed(Api *app_api, uint gpio, unsigned long delta) {
    if (gpio == BUTTON_MODE)
        *ask_user_choice = true;
    return AppReturnValues::OK;
}

// Initlisation of the app.
app_main_clock::app_main_clock(Api *app_api) {
    app_api->performance_set(Api::perf_modes::LOW_POWER);

    ask_user_choice = new bool; *ask_user_choice = false;
    user_choice = new int; *user_choice = 0;
    // if (!(user_choice or ask_user_choice))
        // return Api::app_init_return_status::MALLOC_FAILED;
    // return Api::app_init_return_status::OK;
}

// Processor intensive operations and functions related to drawing to the screen should only be done when the app is in_foreground(=1). This function is only called when the app is init.
BaseApp::AppReturnValues app_main_clock::bgrefresh(Api *app_api, bool in_foreground) {
    if (*user_choice == 3)
        return AppReturnValues::CLOSE;
    else if (*user_choice == 4)
        return AppReturnValues::QUIT;
    return AppReturnValues::OK;
}

// Destruction of app, deinitlisation should be done here. This is only called if the app's APPS_DESTROY_ON_EXIT is set to 1. When it is not a "service" app.
app_main_clock::~app_main_clock() {
    delete ask_user_choice; ask_user_choice = 0;
    delete user_choice; user_choice = 0;
}