feat(Proposals): Add event to update proposal and loads on cancelation

src/lib/Handlers/Proposals.handler.js

@@ -14,14 +14,25 @@ const companiesModel = getModel('companies');
  * @returns 
  */
 async function onPatchEvent( id , newProposalData ){
-    if( !newProposalData.is_accepted ){
-        return;
-    }
     const proposal = await proposalsModel.findById( id );
+    if( !newProposalData.is_accepted ){
+        /// Update Proposal:
+        /// Remove shipper
+        await proposalsModel.findByIdAndUpdate( id , {
+            shipper : null
+        } );
+    
+        /// Update Load:
+        /// Remove carrier, driver and vehicle
+        await loadsModel.findByIdAndUpdate( proposal.load, {
+            carrier : null,
+            driver : null,
+            vehicle : null,
+        } );
+    }else{
         const shipper_user = await usersModel.findById( proposal.accepted_by );
         const shipper = await companiesModel.findById( shipper_user.company );
         const vehicle  = await vehiclesModel.findById( proposal.vehicle );
-
         /// Update Proposal:
         /// Adding shipper to proposal
         await proposalsModel.findByIdAndUpdate( id , {
@@ -36,5 +47,6 @@ async function onPatchEvent( id , newProposalData ){
             vehicle : proposal.vehicle,
         } );
     }
+}
 
 module.exports = { onPatchEvent };