From 9c4c26775318404c8a679d187ed0a0ce904350d9 Mon Sep 17 00:00:00 2001
From: Andrey Antukh <niwi@niwi.nz>
Date: Mon, 6 Mar 2017 18:40:49 +0100
Subject: [PATCH] Simplify time related types and remove momentjs dependency.

---
 frontend/project.clj                 |  1 -
 frontend/src/uxbox/util/time.cljs    | 91 ++++------------------------
 frontend/src/uxbox/util/transit.cljs |  4 +-
 3 files changed, 12 insertions(+), 84 deletions(-)

diff --git a/frontend/project.clj b/frontend/project.clj
index 8bfdce0b5..6373f108a 100644
--- a/frontend/project.clj
+++ b/frontend/project.clj
@@ -24,7 +24,6 @@
                  [cljsjs/react-dom "15.4.2-2"]
                  [cljsjs/react-dom-server "15.4.2-2"]
 
-                 [cljsjs/moment "2.17.1-0"]
                  [funcool/potok "2.0.0"]
                  [funcool/struct "1.0.0"]
                  [funcool/lentes "1.2.0"]
diff --git a/frontend/src/uxbox/util/time.cljs b/frontend/src/uxbox/util/time.cljs
index 6e758f5d4..d7b21b585 100644
--- a/frontend/src/uxbox/util/time.cljs
+++ b/frontend/src/uxbox/util/time.cljs
@@ -5,69 +5,14 @@
 ;; Copyright (c) 2015-2016 Andrey Antukh <niwi@niwi.nz>
 
 (ns uxbox.util.time
-  (:require [cljsjs.moment]
+  (:require [vendor.datefns]
             [cognitect.transit :as t]))
 
-;; --- Instant Impl
-
-(deftype Instant [^number v]
-  IComparable
-  (-compare [this other]
-    (if (instance? Instant other)
-      (compare v (.-v other))
-      (throw (js/Error. (str "Cannot compare " this " to " other)))))
-
-  IEquiv
-  (-equiv [this other]
-    (if (instance? Instant other)
-      (-equiv v (.-v other))
-      false))
-
-  IPrintWithWriter
-  (-pr-writer [_ writer _]
-    (let [m (js/moment v)
-          ms (.toISOString m)]
-      (-write writer (str "#instant \"" ms "\""))))
-
-  IHash
-  (-hash [_] v)
-
-  Object
-  (toString [this]
-    (let [m (js/moment v)]
-      (.toISOString m)))
-
-  (equiv [this other]
-    (-equiv this other)))
-
-(defn instant
-  "Create a new Instant instance from
-  unix offset."
-  [v]
-  {:pre [(number? v)]}
-  (Instant. v))
-
-(defn instant?
-  "Return true if `v` is an instance of Instant."
-  [v]
-  (instance? Instant v))
-
-(defn parse
-  "Parse a string representation of instant
-  with an optional `format` parameter."
-  ([v] (parse v :offset))
-  ([v fmt]
-   (cond
-     (instant? v) v
-     (= fmt :offset) (Instant. v)
-     :else (let [m (if (= fmt :unix)
-                     (js/moment.unix v)
-                     (js/moment v fmt))]
-             (Instant. (.valueOf m))))))
+(def ^:private dateFns js/dateFns)
 
 (defn format
   "Returns a string representation of the Instant
-  instance with optional `fmt` format parameter.
+  instace with optional `fmt` format parameter.
 
   You can use `:iso` and `:unix` shortcuts as
   format parameter.
@@ -77,32 +22,18 @@
   "
   ([v] (format v :iso))
   ([v fmt]
-   {:pre [(instant? v)]}
-   (let [vm (js/moment (.-v v))]
-     (case fmt
-       :unix (.unix vm)
-       :offset (.valueOf vm)
-       :iso (.toISOString vm)
-       (.format vm fmt)))))
+   {:pre [(inst?? v)]}
+   (case fmt
+     :offset (.getTime v)
+     :iso (.format dateFns v)
+     (.format dateFns v fmt))))
 
 (defn now
   "Return the current Instant."
   []
-  (let [vm (js/moment)]
-    (Instant. (.valueOf vm))))
+  (js/Date.))
 
 (defn timeago
   [v]
-  (let [dt (parse v)
-        vm (js/moment (.-v dt))]
-    (.fromNow vm)))
-
-;; --- Transit Adapter
-
-(def instant-write-handler
-  (t/write-handler
-   (constantly "m")
-   #(str (format % :offset))))
-
-(def instant-read-handler
-  (t/read-handler #(instant (js/parseInt % 10))))
+  {:pre [(inst?? v)]}
+  (.distanceInWordsToNow dateFns v))
diff --git a/frontend/src/uxbox/util/transit.cljs b/frontend/src/uxbox/util/transit.cljs
index 4d1e5030d..d68d19a01 100644
--- a/frontend/src/uxbox/util/transit.cljs
+++ b/frontend/src/uxbox/util/transit.cljs
@@ -15,13 +15,11 @@
 
 (def ^:privare +read-handlers+
   {"u" uuid
-   "m" dt/instant-read-handler
    "matrix" gmt/matrix-read-handler
    "point" gpt/point-read-handler})
 
 (def ^:privare +write-handlers+
-  {dt/Instant dt/instant-write-handler
-   gmt/Matrix gmt/matrix-write-handler
+  {gmt/Matrix gmt/matrix-write-handler
    gpt/Point gpt/point-write-handler})
 
 ;; --- Public Api