chirpnest/utils.go

package main

import (
	"errors"
	"log"
	"regexp"
	"strconv"
	"time"
)

func failOnError(err error, msg string) {
	if err != nil {
		log.Fatalf("%s: %s", msg, err)
	}
}

func logOnError(err error, msg string) {
	if err != nil {
		log.Printf("%s: %s", msg, err)
	}
}

func fromChatWarsDate(d string) (t time.Time, err error) {
	r := regexp.MustCompile(`(?P<Day>[0-9]{2}) (?P<Month>(Wintar|Hornung|Lenzin|Ōstar|Winni|Brāh|Hewi|Aran|Witu|Wīndume|Herbist|Hailag)) (?P<Year>[0-9]{4})( (?P<Hour>[0-9]{2}):(?P<Minute>[0-9]{2})){0,1}`)
	if r.FindStringSubmatch(d) != nil {
		//		log.Printf("fromChatWarsDate : Day : %s\n", r.ReplaceAllString(d, "${Day}"))
		//		log.Printf("fromChatWarsDate : Month : %s\n", r.ReplaceAllString(d, "${Month}"))
		//		log.Printf("fromChatWarsDate : Year : %s\n", r.ReplaceAllString(d, "${Year}"))
		//		log.Printf("fromChatWarsDate : Hour : %s\n", r.ReplaceAllString(d, "${Hour}"))
		//		log.Printf("fromChatWarsDate : Minute : %s\n", r.ReplaceAllString(d, "${Minute}"))
		year, _ := strconv.Atoi(r.ReplaceAllString(d, "${Year}"))
		day, _ := strconv.Atoi(r.ReplaceAllString(d, "${Day}"))
		hour, _ := strconv.Atoi(r.ReplaceAllString(d, "${Hour}"))
		minute, _ := strconv.Atoi(r.ReplaceAllString(d, "${Minute}"))
		days := int(0)
		for i := 1059; i < year; i++ {
			days = days + 365
		}
		for i := 1; i < chatWarsMonth[r.ReplaceAllString(d, "${Month}")]; i++ {
			if _, special := chatWarsDaysSpecial[year][i]; special {
				days = days + chatWarsDaysSpecial[year][i]
			} else {
				days = days + chatWarsDays[i]
			}
		}
		for i := 1; i < day; i++ {
			days++
		}

		t, _ := time.Parse(time.RFC3339, "2017-11-18T21:00:00+00:00")
		t = t.AddDate(0, 0, (days / 3))
		t = t.Add(time.Hour * time.Duration(days%3) * 8)
		t = t.Add(time.Minute * time.Duration(hour) * 20)
		t = t.Add(time.Second * time.Duration(minute) * 20)
		return t, nil
	} else {
		return time.Now(), errors.New("Wrong format")
	}
}

func toChatWarsDate(t time.Time) (s string, err error) {
	return "test", nil
}