Merge pull request #32 from Holochain/3-Mentions

[WorkInProgress] initial create mentions links

dna/clutter/clutter.js

@@ -46,6 +46,18 @@ function post(post) {
       // On the DHT, puts a link on my hash to the new post
     commit("post_links",{Links:[{Base:me,Link:key,Tag:"post"}]});
 
+    // MENTIONS
+    // detect mentions
+    // for each mention, write that mention as a link
+    var mentions = detectMentions(post.message)
+    for (var i = 0; i <= mentions.length; i++) {
+        // get the userhash for this handle
+        var userHash = getAgent(handle)
+        if (userHash) {
+            createMention(userHash, key)
+        }
+    }
+
     debug("meta: "+JSON.stringify(getLinks(me,"post",{Load:true})));
     debug(key);
     return key;                                  // Returns the hash key of the new post to the calling function
@@ -169,11 +181,36 @@ function getAgent(handle) {
     }
     return "";
 }
+
+function getMentions() {
+    var links = getLinks(getMe(), "mentioned");
+    // map the array of "links" into simple postHashes
+    // return an array of postHashes
+    return [];
+}
 
 // ==============================================================================
 // HELPERS: unexposed functions
 // ==============================================================================
 
+function detectMentions(postString) {
+    var regexp = /\B\@\w\w+\b/g;
+    var matches = postString.match(regexp);
+    return matches;
+    // returns something like ["bob"]
+}
+
+function createMention(userHash,postHash) {
+    var commit_hash = commit("userMention_links",{
+        Links:[
+            {Base: userHash, Link: postHash, Tag: "mentioned"},
+            {Base: postHash, Link: userHash, Tag: "mentions"}
+        ]
+    });
+    debug('create a mention');
+    debug(commit_hash);
+    return commit_hash;
+}
 
 // helper function to resolve which has will be used as "me"
 function getMe() {return App.Key.Hash;}

dna/dna.json

@@ -45,6 +45,10 @@
                     "Name": "directory_links",
                     "DataFormat": "links"
                 },
+                {
+                    "Name": "userMention_links",
+                    "DataFormat": "links"
+                },
                 {
                     "Name": "follow",
                     "DataFormat": "links"
@@ -130,6 +134,11 @@
                     "Name": "getHandles",
                     "CallingType": "json",
                     "Exposure":"public"
+                },
+                {
+                    "Name": "getMentions",
+                    "CallingType": "json",
+                    "Exposure":"public"
                 }
             ]
         }