add link sharing

app/controllers/api/v1.controller.js

@@ -5,6 +5,7 @@
  */
 const Out = _flitter.model('v1:Out')
 const Project = _flitter.model('v1:Project')
+const Invite = _flitter.model('v1:Invite')
 class v1 {
 
     /*
@@ -66,6 +67,53 @@ class v1 {
             success: true
         })
     }
+
+    async invite_show(req, res, next){
+        const invite = await Invite.findById(req.params.id)
+        if ( !invite ) _flitter.error(res, 404, {reason: 'Invitation not found with the specified URL.'})
+
+        if ( invite.used ) _flitter.error(res, 401, {reason: 'This invitation link has been used or has expired.'})
+
+        const project = await Project.findById(invite.project_id)
+        if ( !project ) _flitter.error(res, 404, {reason: 'This project no longer exists.'})
+
+        const user = await _flitter.model('User').findOne({uuid: invite.by_user_id})
+        if ( !user ) _flitter.error(res, 500, {reason: 'This user no longer exists. Sorry.'})
+
+        return _flitter.view(res, 'dash_v1:accept', {invite, project, user})
+    }
+
+    async invite_accept(req, res, next){
+        const invite = await Invite.findById(req.params.id)
+        if ( !invite ) _flitter.error(res, 404, {reason: 'Invitation not found with the specified URL.'})
+
+        if ( invite.used ) _flitter.error(res, 401, {reason: 'This invitation link has been used or has expired.'})
+
+        const project = await Project.findById(invite.project_id)
+        if ( !project ) _flitter.error(res, 404, {reason: 'This project no longer exists.'})
+
+        const user = await _flitter.model('User').findOne({uuid: invite.by_user_id})
+        if ( !user ) _flitter.error(res, 500, {reason: 'This user no longer exists. Sorry.'})
+
+        // if we're signed in
+        if ( req.session.auth && req.session.auth.user ){
+            if (  project.user_id !== req.session.auth.uuid && !project.shared_user_ids.includes(req.session.auth.uuid) ){
+                project.shared_user_ids.push(req.session.auth.uuid)
+                await project.save()
+            }
+            return res.redirect('/dash/v1')
+        }
+        else {
+            req.session.invite = true
+            req.session.invite_data = {
+                invite: invite.id,
+                project: project.id,
+                user: user.id,
+            }
+
+            return res.redirect('/dash/v1')
+        }
+    }
 }
 
 module.exports = exports = v1