/*
 * datesel.h - Date selector
 * Copyright (C) 2024  Alexander Rosenberg
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version. See the LICENSE file for more information.
 */
#ifndef INCLUDED_DATESEL_H
#define INCLUDED_DATESEL_H

#include "../util.h"
#include "screen.h"

typedef enum {
    DATE_SEL_YEAR,
    DATE_SEL_MONTH,
    DATE_SEL_DAY,
} DateSelectionStage;

typedef struct {
    int year;
    int month;
    int day;
    DateSelectionStage stage;
    DateSelectionStage max_stage;
    UtilPeriod limit_period;
    UtilDate start_time;
    UtilDate end_time;
} DateSelection;

typedef enum {
    DATE_SEL_BACK,
    DATE_SEL_CONTINUE,
    DATE_SEL_DONE,
    DATE_SEL_ERROR
} DateSelectionState;

/*
 * Initialize a DateSelection. LIMIT_PERIOD is the most specific field
 * to select and the period by which to select.
 */
void date_sel_init(DateSelection *ds, UtilPeriod limit_period);

/*
 * Reset the date on DS.
 */
void date_sel_reset(DateSelection *ds);

/*
 * Set the LIMIT_PERIOD for DS.
 */
void date_sel_set_period(DateSelection *ds, UtilPeriod limit_period);

/*
 * Dispatch a DateSelection by processing STATE to continue the selection.
 * Return: weather the user backed out, is still working, or is done
 */
DateSelectionState date_sel_dispatch(DateSelection *ds,
                                     SensorState *state,
                                     const char *label);

#endif