CRUD operations for Posts

- added all CRUD operations for Post model
- add() also creates POST_BY_MEMBER and POST_FROM_NETWORK edges
- delete() also deletes associated edges
- delete() currently does not reallocate node/edge indices after deleting
- will write the data to the db.json file and global.db.nodes

server/db/db.js

@@ -63,6 +63,39 @@ export default class Database {
         }
     }
 
+    deleteNode(prefix, id) {
+        try {
+            let model = nodeModels[prefix]
+            if(model) {
+                this.nodes[model.indices[0] + (id - 1)] = 0
+            } else {
+                throw new Error("Type does not exist for node: " + id)
+            }
+        } catch(e) {
+            throw e
+        }
+    }
+
+    editNode(prefix, id, toEdit) {
+        try {
+            let model = nodeModels[prefix]
+            if(model) {
+                let schema = model.schema
+                let result = schema.safeParse(toEdit)
+                if(result.success) {
+                    this.nodes[model.indices[0] + (id - 1)] = toEdit
+                } else {
+                    console.error(result.error)
+                    throw new global.ServerError(400, "Invalid Data!");
+                }
+            } else {
+                throw new Error("Type does not exist for node: " + prefix)
+            }
+        } catch(e) {
+            throw e
+        }
+    }
+
     addEdge(prefix, edge) {
         try {
             let type = prefix
@@ -83,7 +116,22 @@ export default class Database {
                     throw new global.ServerError(400, "Invalid Data!");
                 }
             } else {
-                throw new Error("Type does not exist for edge: " + id)
+                throw new Error("Type does not exist for edge: " + prefix)
+            }
+        } catch(e) {
+            throw e
+        }
+    }
+
+    deleteEdge(prefix, id) {
+        try {
+            let model = edgeModels[prefix]
+            if(model) {
+                console.log(model.indices[0] + (id - 1))
+                this.edges[model.indices[0] + (id - 1)] = 0
+                console.log(this.edges[model.indices[0] + (id - 1)])
+            } else {
+                throw new Error("Type does not exist for edge: " + prefix)
             }
         } catch(e) {
             throw e