From 73f7ff21cc26c46acebb84bfdd5f8aa026b70471 Mon Sep 17 00:00:00 2001
From: Ansh Shukla <anshukla@stanford.edu>
Date: Wed, 7 Aug 2013 17:36:53 -0700
Subject: [PATCH] videolink: url time parsing logic working

---
 coffee/src/shells/youtube.shell.coffee | 35 +++++++++++++++++++++++++-
 coffee/src/util/util.coffee            | 19 ++++++++++++++
 coffee/src/views/index.coffee          |  1 -
 3 files changed, 53 insertions(+), 2 deletions(-)

diff --git a/coffee/src/shells/youtube.shell.coffee b/coffee/src/shells/youtube.shell.coffee
index 488f242..33c2cb5 100644
--- a/coffee/src/shells/youtube.shell.coffee
+++ b/coffee/src/shells/youtube.shell.coffee
@@ -21,7 +21,6 @@ YouTubeShell = acorn.shells.YouTubeShell =
   ]
 
 
-
 class YouTubeShell.Model extends VideoLinkShell.Model
 
 
@@ -57,6 +56,19 @@ class YouTubeShell.Model extends VideoLinkShell.Model
 
     pattern.exec(link)[3]
 
+  parseTime: (time) =>
+    validTimePatterns = [
+      /(\d+)/
+      /(\d+)m(\d+)s/
+    ]
+
+    # the second one is more general, work backwards
+    if validTimePatterns[1].test time
+      return 60 * parseInt(validTimePatterns[1].exec(time)[1]) + parseInt(validTimePatterns[1].exec(time)[2])
+    else if validTimePatterns[0].test time
+      return parseInt(validTimePatterns[0].exec(time)[0])
+    else
+      return undefined
 
   embedLink: (options) =>
     # see https://developers.google.com/youtube/player_parameters for options
@@ -102,6 +114,27 @@ class YouTubeShell.RemixView extends VideoLinkShell.RemixView
     @model.timeTotal data.data.duration
 
     @model._updateAttributesWithDefaults()
+    start = acorn.util.fetchParameters this.model.link(), ["t", "start"]
+    # take the first possible valid parameter
+
+    start = @model.timeStart()
+    unless _.isNumber start
+      start = acorn.util.fetchParameters this.model.link(), ["t", "start"]
+      start = @model.parseTime _.values(start)[0]
+    unless _.isNumber start
+      start = 0
+
+    end = @model.timeEnd()
+    unless _.isNumber end
+      end = acorn.util.fetchParameters this.model.link(), ["end"]
+      end = @model.parseTime _.values(end)[0]
+    unless _.isNumber end
+      end = @model.timeTotal()
+
+    @model.timeStart(start)
+    @model.timeEnd(end)
+    
+    @_setTimeInputMin()
     @_setTimeInputMax()
 
 
diff --git a/coffee/src/util/util.coffee b/coffee/src/util/util.coffee
index 86c8980..6d2724e 100644
--- a/coffee/src/util/util.coffee
+++ b/coffee/src/util/util.coffee
@@ -274,7 +274,26 @@ util.parseUrl = (url) ->
 
   result
 
+# function takes a URL and an array of parameters
+# returns JSON object with matching parameters and values, if any
+# otherwise, returns empty object
+# http://stackoverflow.com/a/8649003
+util.fetchParameters = (url, params) ->
+  url = $.trim url
+  url = "http://#{url}" unless /^([a-z0-9]+:)?\/\//i.test url  
+  anchor = document.createElement 'a'
+  anchor.href = url
+
+  search = anchor.search.substring(1)
+  search = '{"' + search.replace(/&/g, '","').replace(/\=/g, '":"') + '"}'
+  
+  parameters = if search is "" then {} else JSON.parse search, (key, value) -> 
+      if key is "" then value else decodeURIComponent value
+  
 
+  console.log(parameters)
+  _.pick parameters, params
+  
 
 # track mouse location at all times
 util.mouseLocationTracker = (->
diff --git a/coffee/src/views/index.coffee b/coffee/src/views/index.coffee
index 5145292..9c2647e 100644
--- a/coffee/src/views/index.coffee
+++ b/coffee/src/views/index.coffee
@@ -21,7 +21,6 @@
 `import "shell_editor_view"`
 `import "shell_options_view"`
 `import "shell_selector_view"`
-`import "slider_handle_view"`
 `import "sliding_bar_view"`
 `import "sliding_object_view"`
 `import "sources_view"`