Support dynamic date specification

Signed-off-by: Knut Ahlers <knut@ahlers.me>

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/Luzifer/korvike/functions v0.6.1
 	github.com/Luzifer/rconfig/v2 v2.2.1
 	github.com/bwmarrin/discordgo v0.23.2
+	github.com/goodsign/monday v1.0.1-0.20210726100240-24c0b92f25dc
 	github.com/pkg/errors v0.9.1
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/sirupsen/logrus v1.8.1

go.sum

@@ -39,6 +39,8 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/goodsign/monday v1.0.1-0.20210726100240-24c0b92f25dc h1:OJv+Qvp14bbk2EVQ8dt4qYvTwv3V+wXFX7DVCyYm2Ys=
+github.com/goodsign/monday v1.0.1-0.20210726100240-24c0b92f25dc/go.mod h1:r4T4breXpoFwspQNM+u2sLxJb2zyTaxVGqUfTBjWOu8=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=

mod_streamSchedule.go

@@ -122,7 +122,7 @@ func (m modStreamSchedule) cronUpdateSchedule() {
 		}
 
 		msgEmbed.Fields = append(msgEmbed.Fields, &discordgo.MessageEmbedField{
-			Name:   m.formatGermanShort(*seg.StartTime),
+			Name:   m.formatTime(*seg.StartTime),
 			Value:  title,
 			Inline: false,
 		})
@@ -172,21 +172,18 @@ func (m modStreamSchedule) cronUpdateSchedule() {
 	log.Info("Updated Stream Schedule")
 }
 
-func (m modStreamSchedule) formatGermanShort(t time.Time) string {
+func (m modStreamSchedule) formatTime(t time.Time) string {
-	wd := map[time.Weekday]string{
+	// @attr timezone optional string "UTC" Timezone to display the times in (e.g. "Europe/Berlin")
-		time.Monday:    "Mo.",
+	tz, err := time.LoadLocation(m.attrs.MustString("timezone", ptrString("UTC")))
-		time.Tuesday:   "Di.",
-		time.Wednesday: "Mi.",
-		time.Thursday:  "Do.",
-		time.Friday:    "Fr.",
-		time.Saturday:  "Sa.",
-		time.Sunday:    "So.",
-	}[t.Weekday()]
-
-	tz, err := time.LoadLocation("Europe/Berlin")
 	if err != nil {
-		log.WithError(err).Fatal("Unable to load timezone Europe/Berlin")
+		log.WithError(err).Fatal("Unable to load timezone")
 	}
 
-	return strings.Join([]string{wd, t.In(tz).Format("02.01. 15:04"), "Uhr"}, " ")
+	return localeStrftime(
+		t.In(tz),
+		// @attr time_format optional string "%b %d, %Y %I:%M %p" Time format in [limited strftime format](https://github.com/Luzifer/discord-community/blob/master/strftime.go) to use (e.g. "%a. %d.%m. %H:%M Uhr")
+		m.attrs.MustString("time_format", ptrString("%b %d, %Y %I:%M %p")),
+		// @attr locale optional string "en_US" Locale to translate the date to ([supported locales](https://github.com/goodsign/monday/blob/24c0b92f25dca51152defe82cefc7f7fc1c92009/locale.go#L9-L49))
+		m.attrs.MustString("locale", ptrString("en_US")),
+	)
 }

strftime.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"strings"
+	"time"
+
+	"github.com/goodsign/monday"
+)
+
+var strftimeReplaces = []string{
+	"%a", "Mon", // Weekday as locale’s abbreviated name.
+	"%A", "Monday", // Weekday as locale’s full name.
+	"%d", "02", // Day of the month as a zero-padded decimal number.
+	"%b", "Jan", // Month as locale’s abbreviated name.
+	"%B", "January", // Month as locale’s full name.
+	"%m", "01", // Month as a zero-padded decimal number.
+	"%y", "06", // Year without century as a zero-padded decimal number.
+	"%Y", "2006", // Year with century as a decimal number.
+	"%H", "15", // Hour (24-hour clock) as a zero-padded decimal number.
+	"%I", "03", // Hour (12-hour clock) as a zero-padded decimal number.
+	"%p", "PM", // Locale’s equivalent of either AM or PM.
+	"%M", "04", // Minute as a zero-padded decimal number.
+	"%S", "05", // Second as a zero-padded decimal number.
+	"%f", "000000", // Microsecond as a decimal number, zero-padded on the left.
+	"%z", "-0700", // UTC offset in the form ±HHMM[SS[.ffffff]] (empty string if the object is naive).
+	"%Z", "MST", // Time zone name (empty string if the object is naive).
+}
+
+func localeStrftime(t time.Time, format, locale string) string {
+	return monday.Format(
+		t,
+		strings.NewReplacer(strftimeReplaces...).Replace(format),
+		monday.Locale(locale),
+	)
+}

wiki/Home.md

@@ -144,8 +144,11 @@ Posts stream schedule derived from Twitch schedule as embed in Discord channel
 | `embed_thumbnail_height` |  | int64 |  | Height of the thumbnail |
 | `embed_thumbnail_url` |  | string |  | Publically hosted image URL to use as thumbnail |
 | `embed_thumbnail_width` |  | int64 |  | Width of the thumbnail |
+| `locale` |  | string | `en_US` | Locale to translate the date to ([supported locales](https://github.com/goodsign/monday/blob/24c0b92f25dca51152defe82cefc7f7fc1c92009/locale.go#L9-L49)) |
 | `schedule_entries` |  | int64 | `5` | How many schedule entries to add to the embed as fields |
 | `schedule_past_time` |  | duration | `15m` | How long in the past should the schedule contain an entry |
+| `time_format` |  | string | `%b %d, %Y %I:%M %p` | Time format in [limited strftime format](https://github.com/Luzifer/discord-community/blob/master/strftime.go) to use (e.g. "%a. %d.%m. %H:%M Uhr") |
+| `timezone` |  | string | `UTC` | Timezone to display the times in (e.g. "Europe/Berlin") |