1 files changed, 89 insertions, 0 deletions
diff --git a/module/vcomponent/data-stores/vdir.scm b/module/vcomponent/data-stores/vdir.scm
new file mode 100644
index 00000000..9320c44e
--- /dev/null
+++ b/module/vcomponent/data-stores/vdir.scm
@@ -0,0 +1,89 @@
+(define-module (vcomponent data-stores vdir)
+  :use-module (hnh util)
+  :use-module (oop goops)
+  :use-module (vcomponent data-stores common)
+  :use-module (srfi srfi-71)
+  :use-module ((srfi srfi-88) :select ())
+  :use-module (hnh util path)
+  :use-module ((vcomponent formats ical) :select (serialize deserialize))
+  :use-module ((ice-9 ftw) :select (scandir))
+  :use-module (ice-9 rdelim)
+  :use-module (srfi srfi-1)
+  :use-module (vcomponent base)
+  :export ())
+
+(define-class <vdir-data-store> (<calendar-data-store>)
+  (path getter: path
+        init-keyword: path:)
+  (loaded-calendar accessor: loaded-calendar
+                   init-value: #f)
+  (uid-map accessor: uid-map
+           init-value: #f)
+  )
+
+(define (make-vdir-store path)
+  (make <vdir-data-store> path: path))
+
+(define* (get-attribute path key key: dflt)
+  (catch 'system-error
+    (lambda () (call-with-input-file (path-append path key) read-line))
+    (const dflt)))
+
+
+(define-method (get-all (this <vdir-data-store>))
+  (let ((files (scandir (path this) (lambda (item) (string-ci=? "ics" (filename-extension item)))))
+        (calendar
+         (fold (swap add-child)
+               (set-properties (vcomponent type: 'VCALENDAR)
+                               (cons 'NAME  (get-attribute (path this) "displayname"))
+                               (cons 'COLOR (get-attribute (path this) "color" "#FFFFFF")))
+               (append-map (lambda (file)
+                             (define cal
+                               (call-with-input-file (path-append (path this) file)
+                                 deserialize))
+                             (unless (eq? 'VCALENDAR (type cal))
+                               (scm-error 'misc-error "get-all<vdir-data-store>"
+                                          "Unexpected top level component. Expected VCALENDAR, got ~a. In file ~s"
+                                          (list (type cal) file)))
+                             (each cal children
+                                   (lambda (child)
+                                     (prop child '-X-HNH-FILENAME file))))
+                           files))))
+    (set! (loaded-calendar this) calendar)
+    calendar))
+
+
+(define-method (get-by-uid (this <vdir-data-store>) (uid <string>))
+  (unless (uid-map this)
+    (let ((cal
+           (or (loaded-calendar this)
+               (get-all this))))
+      (define ht (make-hash-table))
+      (for-each (lambda (ev) (hash-set! ht (uid ev) ev))
+                (children cal))
+      (set! (uid-map this) ht)))
+  (hash-ref m uid #f))
+
+
+(define (wrap-for-output . vcomponents)
+  (fold (swap add-child)
+        (set-properties (vcomponent type: 'VCALENDAR)
+                        (cons 'VERSION "2.0")
+                        (cons 'PRODID (prodid))
+                        (cons 'CALSCALE "GREGORIAN"))
+        vcomponents))
+
+(define-method (queue-write (this <vdir-data-store>) vcomponent)
+  ;; TODO Multiple components
+  (let ((filename
+         (cond ((prop vcomponent '-X-HNH-FILENAME)
+                => identity)
+               (else
+                (format #f "~a.ics" (prop vcomponent 'UID))))))
+    (with-atomic-output-to-file (path-append (path this) filename)
+      (lambda () (serialize (wrap-for-output vcomponent) (current-output-port))))))
+
+(define-method (flush (this <vdir-data-store>))
+  (sync))
+
+;; (define (get-in-date-interval ))