From 87652467b55b3c22ea5cfb17d9e6eafa3b6bd63c Mon Sep 17 00:00:00 2001
From: Bradley Matusiak <bmatusiak@gmail.com>
Date: Mon, 6 Jun 2022 18:02:36 -0400
Subject: [PATCH] chain fork (#1247)

* chain fork

* removed test

* removed unbuild

* moved chain fork to libs folder
---
 lib/fork.js | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 lib/fork.js

diff --git a/lib/fork.js b/lib/fork.js
new file mode 100644
index 00000000..3d60d9a0
--- /dev/null
+++ b/lib/fork.js
@@ -0,0 +1,81 @@
+/*
+describe('API Chain Features', function(){
+
+    describe('Gun.chain.fork', function(){
+        var gun = Gun();
+        var fork;
+        it('create fork', function(done){
+            fork = gun.fork().wire();
+            done();
+        });			
+        it('put data via fork', function(done){								
+            fork.get("fork-test").get("fork").put("test123").once(()=>done());				
+        });			
+        it('get data via main', function(done){								
+            gun.get("fork-test").get("fork").once((data)=>{
+                expect(data).to.be("test123");
+                done();
+            });				
+        });			
+        it('put data via main', function(done){								
+            gun.get("fork-test").get("main").put("test321").once(()=>done());				
+        });			
+        it('get data via fork', function(done){								
+            fork.get("fork-test").get("main").once((data)=>{
+                expect(data).to.be("test321");
+                done();
+            });				
+        });
+    })
+
+})
+*/
+(function (Gun, u) {
+    /**
+     * 
+     *  credits: 
+     *      github:bmatusiak
+     * 
+     */
+    Gun.chain.fork = function(g) {
+        var gun = this._;
+        var w = {},
+            mesh = () => {
+                var root = gun.root,
+                    opt = root.opt;
+                return opt.mesh || Gun.Mesh(root);
+            }
+        w.link = function() {
+            if (this._l) return this._l;
+            this._l = {
+                send: (msg) => {
+                    if (!this.l || !this.l.onmessage)
+                        throw 'not attached';
+                    this.l.onmessage(msg);
+                }
+            }
+            return this._l;
+        };
+        w.attach = function(l) {
+            if (this.l)
+                throw 'already attached';
+            var peer = { wire: l };
+            l.onmessage = function(msg) {
+                mesh().hear(msg.data || msg, peer);
+            };
+            mesh().hi(this.l = l && peer);
+        };
+        w.wire = function(opts) {
+            var f = new Gun(opts);
+            f.fork(w);
+            return f;
+        };
+        if (g) {
+            w.attach(g.link());
+            g.attach(w.link());
+        }
+        return w;
+    };
+
+    
+})((typeof window !== "undefined") ? window.Gun : require('../gun'))
\ No newline at end of file