Benjamin Admin
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256 lines
11 KiB
Go
256 lines
11 KiB
Go
package notifications
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import (
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"fmt"
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"strings"
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)
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// Vars are the placeholder values rendered into a template string.
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// The fields here must match the {{…}} markers in templates below.
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type Vars struct {
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Title string
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Date string // YYYY-MM-DD
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DatePretty string // e.g. "Donnerstag, 15. Oktober"
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ClassName string // empty = whole school
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TeacherName string
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}
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// Render picks the right template based on event type, audience, lead-day
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// bucket and language, then substitutes the {{var}} placeholders.
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//
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// lead is grouped into three buckets:
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//
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// 0 → "today"
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// 1 → "tomorrow"
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// >=2 → "in X days" with X = lead value
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//
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// Falls back through (lang → de) and (event_type → "andere") so we never
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// fail to render even with custom rule combos.
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func Render(eventType, audience string, lead int, lang string, v Vars) (subject, body string) {
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bucket := bucketFor(lead)
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lc := strings.ToLower(lang)
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if _, ok := templates[lc]; !ok {
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lc = "de"
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}
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t := lookup(lc, eventType, audience, bucket)
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subject = substitute(t.Subject, lead, v)
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body = substitute(t.Body, lead, v)
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return subject, body
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}
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func bucketFor(lead int) string {
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switch {
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case lead <= 0:
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return "today"
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case lead == 1:
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return "tomorrow"
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default:
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return "days"
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}
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}
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// lookup walks the templates map applying the (lang → de) and
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// (event_type → andere) fallbacks. The bucket is guaranteed to exist for
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// every audience because we always define today/tomorrow/days in the de
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// baseline.
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func lookup(lang, eventType, audience, bucket string) tmpl {
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byEvent, ok := templates[lang][eventType]
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if !ok {
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byEvent = templates[lang]["andere"]
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}
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byAudience, ok := byEvent[audience]
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if !ok {
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byAudience = byEvent["parents"]
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}
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t, ok := byAudience[bucket]
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if !ok {
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t = byAudience["days"]
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}
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return t
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}
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func substitute(s string, lead int, v Vars) string {
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classSuffix := ""
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if v.ClassName != "" {
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classSuffix = " (" + v.ClassName + ")"
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}
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repl := strings.NewReplacer(
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"{{title}}", v.Title,
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"{{date}}", v.Date,
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"{{date_pretty}}", v.DatePretty,
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"{{class_name}}", v.ClassName,
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"{{class_suffix}}", classSuffix,
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"{{teacher_name}}", v.TeacherName,
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"{{lead}}", fmt.Sprintf("%d", lead),
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)
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return repl.Replace(s)
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}
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type tmpl struct {
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Subject string
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Body string
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}
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// templates[lang][eventType][audience][bucket] → tmpl
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//
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// Only the eight parent languages we ship subject-i18n.ts for are covered.
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// Custom event_types fall back to the "andere" branch. Custom languages
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// fall back to "de". This keeps the file under 500 LOC; if more locales
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// are needed, split into one file per language.
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var templates = map[string]map[string]map[string]map[string]tmpl{
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"de": deTemplates(),
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"en": enTemplates(),
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"tr": trTemplates(),
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"ar": arTemplates(),
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"uk": ukTemplates(),
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"ru": ruTemplates(),
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"pl": plTemplates(),
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"fr": frTemplates(),
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}
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func deTemplates() map[string]map[string]map[string]tmpl {
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// All event types share the same template family; we only vary by audience
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// and bucket. Specialise where wording really differs (e.g. fortbildung
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// is school-free, schulfeier invites attendance).
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parentToday := tmpl{
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Subject: "Heute: {{title}}{{class_suffix}}",
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Body: "Liebe Eltern, heute findet {{title}} statt{{class_suffix}}. Datum: {{date_pretty}}.",
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}
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parentTomorrow := tmpl{
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Subject: "Morgen: {{title}}{{class_suffix}}",
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Body: "Liebe Eltern, morgen ({{date_pretty}}) findet {{title}} statt{{class_suffix}}.",
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}
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parentDays := tmpl{
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Subject: "In {{lead}} Tagen: {{title}}{{class_suffix}}",
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Body: "Liebe Eltern, in {{lead}} Tagen ({{date_pretty}}) findet {{title}} statt{{class_suffix}}.",
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}
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studentToday := tmpl{
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Subject: "Heute: {{title}}",
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Body: "Heute ist {{title}}{{class_suffix}}.",
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}
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studentTomorrow := tmpl{
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Subject: "Morgen: {{title}}",
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Body: "Morgen ({{date_pretty}}) ist {{title}}{{class_suffix}}.",
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}
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studentDays := tmpl{
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Subject: "In {{lead}} Tagen: {{title}}",
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Body: "In {{lead}} Tagen ({{date_pretty}}) ist {{title}}{{class_suffix}}.",
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}
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bucket := func(today, tomorrow, days tmpl) map[string]tmpl {
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return map[string]tmpl{"today": today, "tomorrow": tomorrow, "days": days}
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}
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universal := map[string]map[string]tmpl{
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"parents": bucket(parentToday, parentTomorrow, parentDays),
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"students": bucket(studentToday, studentTomorrow, studentDays),
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}
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return map[string]map[string]map[string]tmpl{
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"fortbildung": universal,
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"schulfeier": universal,
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"klassenfahrt": universal,
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"projekttag": universal,
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"eltern_info": universal,
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"andere": universal,
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}
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}
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// The non-DE templates use the same structure; only the strings change.
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// Defined in a single helper that takes the translation map and reuses the
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// DE family glue.
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func makeFamily(
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pT, pTm, pD, sT, sTm, sD tmpl,
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) map[string]map[string]map[string]tmpl {
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bucket := func(today, tomorrow, days tmpl) map[string]tmpl {
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return map[string]tmpl{"today": today, "tomorrow": tomorrow, "days": days}
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}
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universal := map[string]map[string]tmpl{
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"parents": bucket(pT, pTm, pD),
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"students": bucket(sT, sTm, sD),
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}
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return map[string]map[string]map[string]tmpl{
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"fortbildung": universal,
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"schulfeier": universal,
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"klassenfahrt": universal,
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"projekttag": universal,
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"eltern_info": universal,
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"andere": universal,
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}
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}
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func enTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Today: {{title}}{{class_suffix}}", "Dear parents, today {{title}} takes place{{class_suffix}}. Date: {{date_pretty}}."},
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tmpl{"Tomorrow: {{title}}{{class_suffix}}", "Dear parents, tomorrow ({{date_pretty}}) {{title}} takes place{{class_suffix}}."},
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tmpl{"In {{lead}} days: {{title}}{{class_suffix}}", "Dear parents, in {{lead}} days ({{date_pretty}}) {{title}} takes place{{class_suffix}}."},
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tmpl{"Today: {{title}}", "Today is {{title}}{{class_suffix}}."},
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tmpl{"Tomorrow: {{title}}", "Tomorrow ({{date_pretty}}) is {{title}}{{class_suffix}}."},
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tmpl{"In {{lead}} days: {{title}}", "In {{lead}} days ({{date_pretty}}) is {{title}}{{class_suffix}}."},
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)
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}
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func trTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Bugün: {{title}}{{class_suffix}}", "Sayın veliler, bugün {{title}} gerçekleşiyor{{class_suffix}}. Tarih: {{date_pretty}}."},
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tmpl{"Yarın: {{title}}{{class_suffix}}", "Sayın veliler, yarın ({{date_pretty}}) {{title}} gerçekleşiyor{{class_suffix}}."},
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tmpl{"{{lead}} gün sonra: {{title}}{{class_suffix}}", "Sayın veliler, {{lead}} gün sonra ({{date_pretty}}) {{title}} gerçekleşiyor{{class_suffix}}."},
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tmpl{"Bugün: {{title}}", "Bugün {{title}}{{class_suffix}}."},
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tmpl{"Yarın: {{title}}", "Yarın ({{date_pretty}}) {{title}}{{class_suffix}}."},
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tmpl{"{{lead}} gün sonra: {{title}}", "{{lead}} gün sonra ({{date_pretty}}) {{title}}{{class_suffix}}."},
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)
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}
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func arTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"اليوم: {{title}}{{class_suffix}}", "أعزائي أولياء الأمور، اليوم يقام {{title}}{{class_suffix}}. التاريخ: {{date_pretty}}."},
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tmpl{"غدًا: {{title}}{{class_suffix}}", "أعزائي أولياء الأمور، غدًا ({{date_pretty}}) يقام {{title}}{{class_suffix}}."},
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tmpl{"بعد {{lead}} أيام: {{title}}{{class_suffix}}", "أعزائي أولياء الأمور، بعد {{lead}} أيام ({{date_pretty}}) يقام {{title}}{{class_suffix}}."},
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tmpl{"اليوم: {{title}}", "اليوم {{title}}{{class_suffix}}."},
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tmpl{"غدًا: {{title}}", "غدًا ({{date_pretty}}) {{title}}{{class_suffix}}."},
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tmpl{"بعد {{lead}} أيام: {{title}}", "بعد {{lead}} أيام ({{date_pretty}}) {{title}}{{class_suffix}}."},
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)
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}
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func ukTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Сьогодні: {{title}}{{class_suffix}}", "Шановні батьки, сьогодні відбудеться {{title}}{{class_suffix}}. Дата: {{date_pretty}}."},
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tmpl{"Завтра: {{title}}{{class_suffix}}", "Шановні батьки, завтра ({{date_pretty}}) відбудеться {{title}}{{class_suffix}}."},
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tmpl{"Через {{lead}} днів: {{title}}{{class_suffix}}", "Шановні батьки, через {{lead}} днів ({{date_pretty}}) відбудеться {{title}}{{class_suffix}}."},
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tmpl{"Сьогодні: {{title}}", "Сьогодні {{title}}{{class_suffix}}."},
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tmpl{"Завтра: {{title}}", "Завтра ({{date_pretty}}) {{title}}{{class_suffix}}."},
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tmpl{"Через {{lead}} днів: {{title}}", "Через {{lead}} днів ({{date_pretty}}) {{title}}{{class_suffix}}."},
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)
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}
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func ruTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Сегодня: {{title}}{{class_suffix}}", "Уважаемые родители, сегодня состоится {{title}}{{class_suffix}}. Дата: {{date_pretty}}."},
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tmpl{"Завтра: {{title}}{{class_suffix}}", "Уважаемые родители, завтра ({{date_pretty}}) состоится {{title}}{{class_suffix}}."},
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tmpl{"Через {{lead}} дней: {{title}}{{class_suffix}}", "Уважаемые родители, через {{lead}} дней ({{date_pretty}}) состоится {{title}}{{class_suffix}}."},
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tmpl{"Сегодня: {{title}}", "Сегодня {{title}}{{class_suffix}}."},
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tmpl{"Завтра: {{title}}", "Завтра ({{date_pretty}}) {{title}}{{class_suffix}}."},
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tmpl{"Через {{lead}} дней: {{title}}", "Через {{lead}} дней ({{date_pretty}}) {{title}}{{class_suffix}}."},
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)
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}
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func plTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Dzisiaj: {{title}}{{class_suffix}}", "Drodzy rodzice, dzisiaj odbywa się {{title}}{{class_suffix}}. Data: {{date_pretty}}."},
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tmpl{"Jutro: {{title}}{{class_suffix}}", "Drodzy rodzice, jutro ({{date_pretty}}) odbywa się {{title}}{{class_suffix}}."},
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tmpl{"Za {{lead}} dni: {{title}}{{class_suffix}}", "Drodzy rodzice, za {{lead}} dni ({{date_pretty}}) odbywa się {{title}}{{class_suffix}}."},
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tmpl{"Dzisiaj: {{title}}", "Dzisiaj {{title}}{{class_suffix}}."},
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tmpl{"Jutro: {{title}}", "Jutro ({{date_pretty}}) {{title}}{{class_suffix}}."},
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tmpl{"Za {{lead}} dni: {{title}}", "Za {{lead}} dni ({{date_pretty}}) {{title}}{{class_suffix}}."},
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)
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}
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func frTemplates() map[string]map[string]map[string]tmpl {
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return makeFamily(
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tmpl{"Aujourd'hui : {{title}}{{class_suffix}}", "Chers parents, aujourd'hui a lieu {{title}}{{class_suffix}}. Date : {{date_pretty}}."},
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tmpl{"Demain : {{title}}{{class_suffix}}", "Chers parents, demain ({{date_pretty}}) a lieu {{title}}{{class_suffix}}."},
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tmpl{"Dans {{lead}} jours : {{title}}{{class_suffix}}", "Chers parents, dans {{lead}} jours ({{date_pretty}}) a lieu {{title}}{{class_suffix}}."},
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tmpl{"Aujourd'hui : {{title}}", "Aujourd'hui c'est {{title}}{{class_suffix}}."},
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tmpl{"Demain : {{title}}", "Demain ({{date_pretty}}) c'est {{title}}{{class_suffix}}."},
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tmpl{"Dans {{lead}} jours : {{title}}", "Dans {{lead}} jours ({{date_pretty}}) c'est {{title}}{{class_suffix}}."},
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)
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}
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