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+(define-module (calp html caltable)
+ :use-module (util)
+ :use-module (calp html util)
+ :use-module (datetime)
+ :use-module (srfi srfi-41)
+ )
+
+;; Small calendar similar to the one below.
+;; TODO highlight days depending on which events they contain
+;; TODO run this standalone, for embedding in other websites.
+;; @example
+;; må ti on to fr lö sö
+;; 1 2 3 4 5 6 7
+;; 8 9 10 11 12 13 14
+;; 15 16 17 18 19 20 21
+;; 22 23 24 25 26 27 28
+;; 29 30
+;; @end example
+;;
+;; start-date : <date>
+;; end-date : <date>
+;; next-start : <date> → <date>
+;; prev-start : <date> → <date>
+(define*-public (cal-table key: start-date end-date next-start prev-start)
+
+ (define (->link date)
+ (date->string date "~Y-~m-~d.html"))
+
+ ;; (<date> → sxml-attributes) → <date> → sxml
+ (define (td attr)
+ (lambda (date)
+ `(a (@ ,@(attr date))
+ ;; NOTE This time object is the correct place to show the existance
+ ;; of an event on a given day in this small calendar. For example
+ ;; making the text red for all holidays, or creating a yellow background
+ ;; for events from a specific source.
+ (time (@ (datetime ,(date->string date "~Y-~m-~d")))
+ ,(day date)))))
+
+ (define month-start (start-of-month start-date))
+ (define pre-start (start-of-week month-start))
+ (define month-end (end-of-month start-date))
+ (define post-end (end-of-week month-end))
+
+ `(div (@ (class "small-calendar"))
+
+ ;; Cell 0, 0. The letter v. for week number
+ (div (@ (class "column-head row-head")) "v.")
+
+ ;; top row, names of week days
+ ,@(map (lambda (d) `(div (@ (class "column-head"))
+ ,(string-titlecase (week-day-name d 2))))
+ (weekday-list))
+
+ ;; left columun, week numbers
+ ,@(map (lambda (v) `(div (@ (class "row-head")) ,v))
+ (map week-number
+ (stream->list
+ (stream-take-while (lambda (s) (date<= s post-end))
+ (week-stream pre-start)))))
+
+ ;; actual days
+
+ ,@(map (td (lambda (date)
+ `((class "prev")
+ (href ,(->link
+ ;; (prev-start date)
+ (iterate
+ prev-start
+ (lambda (d) (date<= d date (next-start d)))
+ start-date))
+ "#" ,(date-link date)))))
+ (date-range pre-start (remove-day start-date)))
+
+
+ ,@(map (td (lambda (date) `((href "#" ,(date-link date)))))
+ (date-range start-date end-date))
+
+
+ ,@(map (td (lambda (date)
+ `((class "next")
+ (href ,(->link
+ ;; (next-start date)
+ (iterate
+ next-start
+ (lambda (d) (and (date<= d date)
+ (date< date (next-start d))))
+ start-date)) "#" ,(date-link date)))))
+ (date-range (add-day end-date) post-end))))