WIP: Watch me WIP, WIP, watch me nay-nay

This commit is contained in:
AJ ONeal 2019-06-16 02:13:49 -06:00
parent d9bb911e2d
commit d3fbe75661
3 changed files with 237 additions and 1 deletions

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# go-goodtimes
Webhooks, on time.
Webhooks, on time.
```
go generate -mod=vendor ./...
go build -mod=vendor ./...
```

20
rollover.go Normal file
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package main
import (
"fmt"
"time"
)
func mainx() {
t1 := time.Date(2019, 06, 16, -1, 31, 0, 0, time.UTC)
fmt.Println(t1)
t1 = time.Date(2019, 06, 16, 0, 31, 0, 0, time.UTC)
fmt.Println(t1)
t1 = time.Date(2019, 06, 16, 23, 31, 0, 0, time.UTC)
fmt.Println(t1)
t1 = time.Date(2019, 06, 16, 24, 31, 0, 0, time.UTC)
fmt.Println(t1)
}

211
time.go Normal file
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package main
import (
"fmt"
"time"
)
// https://yourbasic.org/golang/time-change-convert-location-timezone/
// https://sebest.github.io/post/create-a-small-docker-image-for-a-golang-binary/
// https://github.com/FKSE/docker-golang-base
// tar cfz zoneinfo.tar.gz /usr/share/zoneinfo
// git clone https://github.com/eggert/tz
// grep '^Rule' -r tz/ | cut -f8-10 | egrep -iv 'Rule|SAVE'
// egrep '\s0:30' -r tz/
func main() {
// blacklist "", "Local"
// UTC to TZ should always be correct
// TZ to UTC may not be correct
now := time.Now()
fmt.Println("Now", now.Format(time.RFC3339))
loc, err := time.LoadLocation("America/Phoenix")
if nil != err {
panic(err)
}
fmt.Println("Loc", now.In(loc))
/* boundary checks */
CheckInput([]int{2019, 11, 10,
01, 02, 56, 0})
CheckInput([]int{2019, 11, 10,
01, 02, 60, 0})
CheckInput([]int{2019, 11, 10,
01, 60, 59, 0})
CheckInput([]int{2019, 11, 10,
24, 59, 59, 0})
CheckInput([]int{2019, 11, 10,
25, 59, 59, 0})
CheckInput([]int{2019, 11, 10,
23, 59, 59, 0})
CheckInput([]int{2019, 11, 31,
23, 0, 0, 0})
/* funky times */
tz := "America/Denver"
fmt.Println("funky")
CheckInput2([]int{2019, 3, 10,
01, 59, 00, 0}, tz)
CheckInput2([]int{2019, 3, 10,
02, 00, 00, 0}, tz)
CheckInput2([]int{2019, 3, 10,
02, 01, 00, 0}, tz)
CheckInput2([]int{2019, 3, 10,
02, 59, 00, 0}, tz)
CheckInput2([]int{2019, 3, 10,
03, 00, 00, 0}, tz)
CheckInput2([]int{2019, 3, 10,
03, 01, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
0, 59, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
01, 59, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
02, 00, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
02, 01, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
02, 59, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
03, 00, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
03, 01, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
04, 01, 00, 0}, tz)
CheckInput2([]int{2019, 11, 03,
05, 01, 00, 0}, tz)
}
func CheckInput2(st []int, tzstr string) {
m := time.Month(st[1])
tz, err := time.LoadLocation(tzstr)
if nil != err {
fmt.Println("screwed the pooch")
return
}
// Does the time exist
t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], st[6], tz)
if st[5] != t1.Second() {
fmt.Println("Bad Second", st, t1)
return
}
if st[4] != t1.Minute() {
fmt.Println("Bad Minute", st, t1.Minute())
return
}
if st[3] != t1.Hour() {
fmt.Println("Bad Hour", st, t1)
return
}
if st[2] != t1.Day() {
fmt.Println("Bad Day of Month", st, t1)
return
}
if st[1] != int(t1.Month()) {
fmt.Println("Bad Month", st, t1)
return
}
if st[0] != t1.Year() {
fmt.Println("Bad Year", st, t1)
return
}
// Does the time exist twice?
// (if I change the time in UTC, do I still get the same time)
// Note: Some timezones change by half or quarter hour
// However, it seems that DST always changes by one or two whole hours
// Oh, and then there's Luthuania...
// Rule LH 2008 max - Oct Sun>=1 2:00 0:30 -
//
// https://en.wikipedia.org/wiki/Daylight_saving_time_by_country
// https://en.wikipedia.org/wiki/Winter_time_(clock_lag)
// https://en.wikipedia.org/wiki/Summer_time_in_Europe
// https://en.wikipedia.org/wiki/Daylight_saving_time_in_the_Americas
// If I change the time iadd or subtract time in UTC, do I see the same difference in TZ?
u1 := t1.UTC()
// A better way to do this would probably be to parse the timezone database, but... yeah...
for _, n := range []int{ /*-120, -60,*/ 30, 60, 120} {
t2 := time.Date(st[0], m, st[2], st[3], st[4]+n, st[5], st[6], tz)
u2 := t2.UTC()
if u1.Equal(u2) {
fmt.Println("Ambiguous Time")
fmt.Printf("%s, %s, %+d\n", t1, u1, n)
fmt.Printf("%s, %s, %+d\n", t2, u2, n)
return
}
}
//ta :=
}
func CheckInput(st []int) {
m := time.Month(st[1])
t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], st[6], time.UTC)
if st[5] != t1.Second() {
fmt.Println("Bad Second", st)
return
}
if st[4] != t1.Minute() {
fmt.Println("Bad Minute", st, t1.Minute())
return
}
if st[3] != t1.Hour() {
fmt.Println("Bad Hour", st)
return
}
if st[2] != t1.Day() {
fmt.Println("Bad Day of Month", st)
return
}
if st[1] != int(t1.Month()) {
fmt.Println("Bad Month", st)
return
}
if st[0] != t1.Year() {
fmt.Println("Bad Year", st)
return
}
}
/*
//////
////// 9:01 twice
//////
var d = new Date("3/10/2019, 01:59:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 10 Mar 2019 08:59:00 GMT
var d = new Date("3/10/2019, 02:01:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 10 Mar 2019 09:01:00 GMT
var d = new Date("3/10/2019, 02:59:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 10 Mar 2019 09:59:00 GMT
var d = new Date("3/10/2019, 03:01:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 10 Mar 2019 09:01:00 GMT
//////
////// 8:01 never
//////
var d = new Date("11/03/2019, 01:59:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 03 Nov 2019 07:59:00 GMT
var d = new Date("11/03/2019, 02:01:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 03 Nov 2019 09:01:00 GMT
var d = new Date("11/03/2019, 02:59:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
// tzUTC:Sun, 03 Nov 2019 09:59:00 GMT
var d = new Date("11/03/2019, 03:01:00");
console.log("tzUTC:" + tzUTC(d, 'America/Denver'));
tzUTC:Sun, 03 Nov 2019 10:01:00 GMT
*/