/// <summary>
/// Generate a cron expression that runs at a given day every x amount of months
/// Example : A cron that will run at 13:00 on the 30th every 3 months
/// </summary>
/// <param name="runTime">Time that the cron will run</param>
/// <param name="dayofTheMonthToRunOn">The day that the cron will run on (1-31)</param>
/// <param name="monthsToRunOn">Time between months that the cron will run on (1-12)</param>
/// <returns>Cron expression</returns>
public static string GenerateMonthlyCronExpression(TimeSpan runTime, int dayofTheMonthToRunOn, int monthsToRunOn)
{
CronGenerationValueValidator.ValidateDayOfMonthToRunOn(dayofTheMonthToRunOn);
CronGenerationValueValidator.ValidateMonthsToRunAfter(monthsToRunOn);
return($"{ParseCronTimeSpan(runTime)} {dayofTheMonthToRunOn} 1/{monthsToRunOn} ? *");
}
private static string CreateYearlyValue(TimeSpan runTime, int dayOfMonthToRunOn, int monthToRunOn)
{
CronGenerationValueValidator.ValidateDayOfMonthToRunOn(dayOfMonthToRunOn);
CronGenerationValueValidator.ValidateMonthToRunOn(monthToRunOn);
CronGenerationValueValidator.ValidateDayOfMonthForFebrary(monthToRunOn, dayOfMonthToRunOn);
CronGenerationValueValidator.ValidateDayOfMonthForShorterMonth(monthToRunOn, dayOfMonthToRunOn);
return($"{ParseCronTimeSpan(runTime)} {dayOfMonthToRunOn} {monthToRunOn} ? *");
}
private static string CreateTimeOfMonthValue(TimeSpan runTime, TimeOfMonthToRun timeOfMonthToRun, int dayToRun, int amountOfMonthsToRunAfter)
{
CronGenerationValueValidator.ValidateMonthsToRunAfter(amountOfMonthsToRunAfter);
if (timeOfMonthToRun != TimeOfMonthToRun.Last)
{
var day = ParseDayOfWeek(dayToRun);
var timeOfMonuthToRunIntValue = (int)timeOfMonthToRun;
return($"{ParseCronTimeSpan(runTime)} ? 1/{amountOfMonthsToRunAfter} {day}#{timeOfMonuthToRunIntValue} *");
}
else
{
var day = dayToRun + 1;
return($"{ParseCronTimeSpan(runTime)} ? 1/{amountOfMonthsToRunAfter} {day}L *");
}
}
/// <summary>
/// Generate a cron expression that runs every x hour(s)
/// Example : A cron that will run every 2 hours
/// </summary>
/// <param name="hours">Amount of hours to wait before running</param>
/// <returns>Cron expression</returns>
public static string GenerateHourlyCronExpression(int hours)
{
CronGenerationValueValidator.ValidateHours(hours);
return($"0 0 0/{hours} 1/1 * ? *");
}
private static string CreateMultiDayValue(TimeSpan runTime, List <int> days)
{
CronGenerationValueValidator.ValidateDays(days);
return($"{ParseCronTimeSpan(runTime)} ? * {ParseMultiDaysList(days)} *");
}
/// <summary>
/// Generate a cron expression that runs every x minutes(s)
/// Example : A cron that will run every 5 minutes
/// </summary>
/// <param name="minutes">Amount of minutes to wait before running</param>
/// <returns>Cron expression</returns>
public static string GenerateMinutesCronExpression(int minutes)
{
CronGenerationValueValidator.ValidateMinutes(minutes);
return($"0 0/{minutes} * 1/1 * ? *");
}
