/*                 _,.---._    .-._        .--.-. ,--.--------.
 *   _,..---._   ,-.' , -  `. /==/ \  .-._/==/  //==/,  -   , -\
 * /==/,   -  \ /==/_,  ,  - \|==|, \/ /, |==\ -\\==\.-.  - ,-./
 * |==|   _   _\==|   .=.     |==|-  \|  | \==\- \`--`\==\- \
 * |==|  .=.   |==|_ : ;=:  - |==| ,  | -|  `--`-'     \==\_ \
 * |==|,|   | -|==| , '='     |==| -   _ |             |==|- |
 * |==|  '='   /\==\ -    ,_ /|==|  /\ , |             |==|, |
 * |==|-,   _`/  '.='. -   .' /==/, | |- |             /==/ -/
 * `-.`.____.'     `--`--''   `--`./  `--`             `--`--`
 *                    _ __    ,---.      .-._         .=-.-.  _,.----.
 *                 .-`.' ,`..--.'  \    /==/ \  .-._ /==/_ /.' .' -   \
 *                /==/, -   \==\-/\ \   |==|, \/ /, /==|, |/==/  ,  ,-'
 *               |==| _ .=. /==/-|_\ |  |==|-  \|  ||==|  ||==|-   |  .
 *               |==| , '=',\==\,   - \ |==| ,  | -||==|- ||==|_   `-' \
 *               |==|-  '..'/==/ -   ,| |==| -   _ ||==| ,||==|   _  , |
 *               |==|,  |  /==/-  /\ - \|==|  /\ , ||==|- |\==\.       /
 *               /==/ - |  \==\ _.\=\.-'/==/, | |- |/==/. / `-.`.___.-'
 *               `--`---'   `--`        `--`./  `--``--`-`
 *
 *	@(#)Copyright (c) 2024, Nathan D. Fisher.
 *
 *      This is free software.  It comes with NO WARRANTY.
 *      Permission to use, modify and distribute this source code
 *      is granted subject to the following conditions.
 *      1/ that the above copyright notice and this notice
 *      are preserved in all copies and that due credit be given
 *      to the author.
 *      2/ that any changes to this code are clearly commented
 *      as such so that the author does not get blamed for bugs
 *      other than his own.
 */

#include <stdint.h>
#include <stddef.h>  // NULL
#include <string.h>  // memcmp
#include <strings.h>
#include "epoch.h"

uint8_t monthGetDays(Month month, Year *year) {
    switch (month) {
    case January:
    case March:
    case May:
    case July:
    case August:
    case October:
    case December:
        return 31;
    case February:
        switch (year->tag) {
        case leapYear:
            return 28;
        default:
            return 29;
        }
    default:
        return 30;
    }
}

uint32_t monthGetSeconds(Month month, Year *year) {
    return (int64_t)monthGetDays(month, year) * SECONDS_PER_DAY;
}

int monthIncrement(Month *month) {
    if (*month == December)
        return 1;
    else
        *month += 1;
    return 0;
}

int monthDecrement(Month *month) {
    if (*month == January)
        return  1;
    else
        *month -= 1;
    return 0;
}

const char *MonthNames[] = { "January", "February", "March", "April", "May", "June",
    "July", "August", "September", "October", "November", "December" };
const char *MonthAbbrs[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
    "Aug", "Sep", "Oct", "Nov", "Dec" };

const char* monthName(Month month) {
    return MonthNames[month - 1];
}

const char* monthAbbr(Month month) {
    return MonthAbbrs[month - 1];
}

int parseMonth(const char *s) {
    int i;
    for (i = 0; i < 12; i++) {
        if (strncasecmp(s, MonthAbbrs[i], 4) == 0 || strncasecmp(s, MonthNames[i], 10) == 0)
            return i + 1;
    }
    return -1;
}