From d23ced1fba0e4bc7ecbc00d0a2376f34bab80509 Mon Sep 17 00:00:00 2001
From: Wu Cheng-Han
Date: Mon, 10 Oct 2016 20:23:33 +0800
Subject: Update to move authorship calculation code to note model and support
 update authorship after making revision of docs

---
 lib/realtime.js | 101 +-------------------------------------------------------
 1 file changed, 1 insertion(+), 100 deletions(-)

(limited to 'lib/realtime.js')

diff --git a/lib/realtime.js b/lib/realtime.js
index 0c68a256..9c3d5b2e 100644
--- a/lib/realtime.js
+++ b/lib/realtime.js
@@ -642,106 +642,7 @@ function operationCallback(socket, operation) {
         }
     }
     // save authorship
-    var index = 0;
-    var authorships = note.authorship;
-    var timestamp = Date.now();
-    for (var i = 0; i < operation.length; i++) {
-        var op = operation[i];
-        if (ot.TextOperation.isRetain(op)) {
-            index += op;
-        } else if (ot.TextOperation.isInsert(op)) {
-            var opStart = index;
-            var opEnd = index + op.length;
-            var inserted = false;
-            // authorship format: [userId, startPos, endPos, createdAt, updatedAt]
-            if (authorships.length <= 0) authorships.push([userId, opStart, opEnd, timestamp, timestamp]);
-            else {
-                for (var j = 0; j < authorships.length; j++) {
-                    var authorship = authorships[j];
-                    if (!inserted) {
-                        var nextAuthorship = authorships[j + 1] || -1;
-                        if (nextAuthorship != -1 && nextAuthorship[1] >= opEnd || j >= authorships.length - 1) {
-                            if (authorship[1] < opStart && authorship[2] > opStart) {
-                                // divide
-                                var postLength = authorship[2] - opStart;
-                                authorship[2] = opStart;
-                                authorship[4] = timestamp;
-                                authorships.splice(j + 1, 0, [userId, opStart, opEnd, timestamp, timestamp]);
-                                authorships.splice(j + 2, 0, [authorship[0], opEnd, opEnd + postLength, authorship[3], timestamp]);
-                                j += 2;
-                                inserted = true;
-                            } else if (authorship[1] >= opStart) {
-                                authorships.splice(j, 0, [userId, opStart, opEnd, timestamp, timestamp]);
-                                j += 1;
-                                inserted = true;
-                            } else if (authorship[2] <= opStart) {
-                                authorships.splice(j + 1, 0, [userId, opStart, opEnd, timestamp, timestamp]);
-                                j += 1;
-                                inserted = true;
-                            }
-                        }
-                    }
-                    if (authorship[1] >= opStart) {
-                        authorship[1] += op.length;
-                        authorship[2] += op.length;
-                    }
-                }
-            }
-            index += op.length;
-        } else if (ot.TextOperation.isDelete(op)) {
-            var opStart = index;
-            var opEnd = index - op;
-            if (operation.length == 1) {
-                authorships = [];
-            } else if (authorships.length > 0) {
-                for (var j = 0; j < authorships.length; j++) {
-                    var authorship = authorships[j];
-                    if (authorship[1] >= opStart && authorship[1] <= opEnd && authorship[2] >= opStart && authorship[2] <= opEnd) {
-                        authorships.splice(j, 1);
-                        j -= 1;
-                    } else if (authorship[1] < opStart && authorship[1] < opEnd && authorship[2] > opStart && authorship[2] > opEnd) {
-                        authorship[2] += op;
-                        authorship[4] = timestamp;
-                    } else if (authorship[2] >= opStart && authorship[2] <= opEnd) {
-                        authorship[2] = opStart;
-                        authorship[4] = timestamp;
-                    } else if (authorship[1] >= opStart && authorship[1] <= opEnd) {
-                        authorship[1] = opEnd;
-                        authorship[4] = timestamp;
-                    }
-                    if (authorship[1] >= opEnd) {
-                        authorship[1] += op;
-                        authorship[2] += op;
-                    }
-                }
-            }
-            index += op;
-        }
-    }
-    // merge
-    for (var j = 0; j < authorships.length; j++) {
-        var authorship = authorships[j];
-        for (var k = j + 1; k < authorships.length; k++) {
-            var nextAuthorship = authorships[k];
-            if (nextAuthorship && authorship[0] === nextAuthorship[0] && authorship[2] === nextAuthorship[1]) {
-                var minTimestamp = Math.min(authorship[3], nextAuthorship[3]);
-                var maxTimestamp = Math.max(authorship[3], nextAuthorship[3]);
-                authorships.splice(j, 1, [authorship[0], authorship[1], nextAuthorship[2], minTimestamp, maxTimestamp]);
-                authorships.splice(k, 1);
-                j -= 1;
-                break;
-            }
-        }
-    }
-    // clear
-    for (var j = 0; j < authorships.length; j++) {
-        var authorship = authorships[j];
-        if (!authorship[0]) {
-            authorships.splice(j, 1);
-            j -= 1;
-        }
-    }
-    note.authorship = authorships;
+    note.authorship = models.Note.updateAuthorshipByOperation(operation, userId, note.authorship);
 }
 
 function connection(socket) {
-- 
cgit v1.2.3