grokify/mogo

package year

import (
    "time"

    "github.com/grokify/mogo/time/timeutil"
)

// TimesYearStarts returns time series of months given start and end input times.
func TimesYearStarts(times ...time.Time) timeutil.Times {
    timesStarts := timeutil.Times{}
    if len(times) == 0 {
        return timesStarts
    }
    min, max := timeutil.SliceMinMax(times)
    minYear := timeutil.NewTimeMore(min, 0).YearStart()
    maxYear := timeutil.NewTimeMore(max, 0).YearStart()
    curYear := minYear
    for curYear.Before(maxYear) || curYear.Equal(maxYear) {
        timesStarts = append(timesStarts, curYear)
        curYear = curYear.AddDate(1, 0, 0)
    }
    return timesStarts
}