84 lines
5.1 KiB
HTML
84 lines
5.1 KiB
HTML
{{- /*
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Calendar links for one date of a tour: an .ics file (iCalendar, for Apple Calendar, Outlook,
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Thunderbird and most other apps) and a link that adds the event in Google Calendar.
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Meant for the list of dates on a tour page:
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* Tag 1 (27.12.) **17:30 Uhr** {{< calendar date="2026-12-27" time="17:30" duration="210" >}}
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Params: date (YYYY-MM-DD), time (HH:MM, local time in Hamburg), duration in minutes
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(optional, else tours.<slug>.duration in data/schedule/<event>.yaml), title (optional, else the
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title of this date in the schedule data, else the page title).
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*/ -}}
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{{- $page := .Page -}}
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{{- $lang := $page.Language.Name -}}
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{{- $other := cond (eq $lang "de") "en" "de" -}}
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{{- $event := $page.Section -}}
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{{- $slug := $page.File.ContentBaseName -}}
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{{- $date := .Get "date" -}}
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{{- $time := .Get "time" -}}
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{{- if not (and (findRE `^\d{4}-\d{2}-\d{2}$` $date) (findRE `^\d{2}:\d{2}$` $time)) -}}
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{{- errorf "calendar: date must be YYYY-MM-DD and time HH:MM, got %q %q: %s" $date $time .Position -}}
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{{- end -}}
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{{- $data := dict -}}
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{{- with hugo.Data.schedule }}{{ with index . $event }}{{ $data = . }}{{ end }}{{ end -}}
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{{- $tourData := dict -}}
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{{- with $data.tours }}{{ with index . $slug }}{{ $tourData = . }}{{ end }}{{ end -}}
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{{- /* This date in the schedule, for its title. */ -}}
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{{- $slot := dict -}}
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{{- range $data.days -}}
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{{- if eq .date $date -}}
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{{- range .tours }}{{ if and (eq .tour $slug) (eq .time $time) }}{{ $slot = . }}{{ end }}{{ end -}}
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{{- end -}}
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{{- end -}}
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{{- $title := .Get "title" -}}
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{{- if not $title }}{{ with $slot.title }}{{ $title = index . $lang | default (index . $other) }}{{ end }}{{ end -}}
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{{- $title = $title | default $page.Title -}}
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{{- $minutes := int (.Get "duration" | default ($tourData.duration | default 0)) -}}
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{{- if not $minutes -}}
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{{- warnidf "warning-calendar-duration" "calendar: no duration for %s on %s %s, the calendar entry has no end time: %s" $slug $date $time .Position -}}
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{{- end -}}
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{{- $start := time.AsTime (printf "%sT%s:00" $date $time) "Europe/Berlin" -}}
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{{- $end := $start.Add (time.ParseDuration (printf "%dm" $minutes)) -}}
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{{- $utc := "20060102T150405Z" -}}
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{{- /* Everyone meets at the Hackertours desk, which is where the routes on the map start. */ -}}
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{{- $location := i18n "calendar_meeting_point" -}}
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{{- with $data.map }}{{ with .origin }}{{ with .name -}}
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{{- $location = printf "%s, %s" $location (index . $lang | default (index . $other)) -}}
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{{- end }}{{ end }}{{ end -}}
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{{- /* The front matter summary: .Summary would render this page again from inside its own shortcode. */ -}}
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{{- $summary := $page.Params.summary | default $page.Description | default "" -}}
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{{- $description := printf "%s\n\n%s" ($page.RenderString $summary | plainify | htmlUnescape | strings.TrimSpace) $page.Permalink -}}
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{{- $ics := printf "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//CCC Hansestadt Hamburg//Hackertours//%s\r\nCALSCALE:GREGORIAN\r\nMETHOD:PUBLISH\r\nBEGIN:VEVENT\r\n" (upper $lang) -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "UID" "value" (printf "%s-%s-%s-%s@%s" $event $slug $date (replace $time ":" "") (urls.Parse site.BaseURL).Host))) -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "DTSTAMP" "value" ($page.Lastmod.UTC.Format $utc))) -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "DTSTART" "value" ($start.UTC.Format $utc))) -}}
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{{- if $minutes }}{{ $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "DTEND" "value" ($end.UTC.Format $utc))) }}{{ end -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "SUMMARY" "value" $title "text" true)) -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "LOCATION" "value" $location "text" true)) -}}
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{{- with $data.map }}{{ with .origin }}{{ with .geo -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "GEO" "value" (printf "%v;%v" .lat .lon))) -}}
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{{- end }}{{ end }}{{ end -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "DESCRIPTION" "value" $description "text" true)) -}}
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{{- $ics = printf "%s%s" $ics (partial "ics-line.html" (dict "name" "URL" "value" $page.Permalink)) -}}
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{{- $ics = printf "%sEND:VEVENT\r\nEND:VCALENDAR\r\n" $ics -}}
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{{- $file := printf "%s-%s-%s.ics" $slug $date (replace $time ":" "") -}}
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{{- $icsFile := resources.FromString (path.Join (strings.TrimPrefix "/" $page.RelPermalink) $file) $ics -}}
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{{- $google := printf "https://calendar.google.com/calendar/render?%s" (querify
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"action" "TEMPLATE"
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"text" $title
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"dates" (printf "%s/%s" ($start.UTC.Format $utc) ($end.UTC.Format $utc))
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"details" $description
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"location" $location
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"ctz" "Europe/Berlin"
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) -}}
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{{- /* The visible link texts repeat for every date; the hidden part says which date it is. */ -}}
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{{- $when := printf "%s %s" ($start | time.Format "Mon 2.1.") $time -}}
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<span class="tour-calendar"><a href="{{ $icsFile.RelPermalink }}" download="{{ $file }}">{{ i18n "calendar_ics" }}<span class="visually-hidden"> {{ $when }}</span></a> · <a href="{{ $google }}">{{ i18n "calendar_google" }}<span class="visually-hidden"> {{ $when }}</span></a></span>
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{{- /* chomp */ -}}
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