Added Soft remove and a character asset parenting system

2015-03-18 08:59:02 +00:00
parent 06b0ad7eba
commit 3656a0b66f
24 changed files with 215 additions and 121 deletions
--- a/rpg-docs/lib/functions/parenting.js
+++ b/rpg-docs/lib/functions/parenting.js
@@ -0,0 +1,112 @@
+var childSchema = new SimpleSchema({
+	parent:              { type: Object },
+	'parent.collection': { type: String },
+	'parent.id':         { type: String, regEx: SimpleSchema.RegEx.Id }
+});
+
+var joinWithDefaultKeys = function(keys){
+	var defaultKeys = [
+		'charId',
+		'enabled',
+		'removed',
+		'removedAt',
+		'removedBy',
+		'restoredAt',
+		'restoredBy'
+	];
+	return _.union(keys, defaultKeys);
+}
+
+var childCollections = [];
+
+makeChild = function(collection, inheritedKeys){
+	collection.inheritedKeys = joinWithDefaultKeys(inheritedKeys);
+
+	collection.helpers({
+		//returns the parent even if it's removed
+		getParent: function(){
+			var parentCol = Meteor.isClient? 
+				window[this.parent.collection] : global[this.parent.collection];
+			if (parentCol)
+				return parentCol.findOne(this.parent.id, {removed: true});
+		},
+		getParentCollection: function(){
+			return Meteor.isClient? 
+				window[this.parent.collection] : global[this.parent.collection];
+		}
+	});
+
+	//when we change parents, inherit its properties
+	collection.after.update(function (userId, doc, fieldNames, modifier, options) {
+		if(modifier && modifier.$set && modifier.$set.parent){
+			var parent = doc.getParent();
+			if(!parent) throw new Meteor.Error('Parenting Error',
+											   'Document\'s parent does not exist');
+			var handMeDowns = _.pick(parent, collection.inheritedKeys);
+			collection.update(doc._id, {$set: handMeDowns});
+		}
+	});
+
+	collection.attachSchema(childSchema);
+
+	childCollections.push(collection);
+};
+
+makeParent = function(collection, donatedKeys){
+	collection.donatedKeys = joinWithDefaultKeys(donatedKeys);
+
+	//after changing, push the changes to all children
+	collection.after.update(function (userId, doc, fieldNames, modifier, options) {
+		if(!modifier) return;
+		modifier = _.pick(modifier, ['$set', '$unset']);
+		modifier.$set   = _.pick(modifier.$set,   donatedKeys);
+		modifier.$unset = _.pick(modifier.$unset, donatedKeys);
+		doc = _.pick(doc, ['_id','charId']);
+		Meteor.call('updateChildren', doc, modifier);
+	});
+
+	collection.after.remove(function (userId, doc) {
+		doc = _.pick(doc, ['_id','charId']);
+		Meteor.call('removeChildren', doc);
+	});
+};
+
+var checkPermission = function(userId, charId){
+	var char = Characters.findOne( charId, { fields: {owner: 1, writers: 1} } );
+	if(!char)
+		throw new Meteor.Error('Access Denied',
+							   'Character '+charId+' does not exist');
+	if (!userId) 
+		throw new Meteor.Error('Access Denied',
+							   'No UserId set when trying to update character asset.');
+	if (char.owner !== userId && !_.contains(char.writers, userId))
+		throw new Meteor.Error('Access Denied',
+							   'Not permitted to update assets of this character.');
+	return true;
+};
+
+Meteor.methods({
+	updateChildren: function (parent, modifier) {
+		check(parent, {_id: String, charId: String});
+		check(modifier, Object);
+		checkPermission(this.userId, parent.charId);
+
+		_.each(childCollections, function(collection){
+			collection.update(
+				{charId: parent.charId, 'parent.id': parent._id},
+				modifier,
+				{multi: true}
+			);
+		});
+	},
+	removeChildren: function (parent) {
+		check(parent, {_id: String, charId: String});
+		checkPermission(this.userId, parent.charId);
+
+		_.each(childCollections, function(collection){
+			collection.remove(
+				{charId: parent.charId, 'parent.id': parent._id}
+			);
+		});
+	}
+});