adds selectors, and diamond cut

lib/diamonds.ts

@@ -1,4 +1,6 @@
-import { Contract } from 'ethers';
+import { Contract, constants } from 'ethers';
+
+// TODO: import IDiamond type
 
 export interface Facet {
   target: string;
@@ -49,16 +51,44 @@ export function printFacetCuts(
   };
 }
 
-// attempts to add a selector, if selector already exists, function will throw
-export async function insertUnregisteredSelector(
+// adds unregistered selectors
+export async function addUnregisteredSelector(
   diamond: Contract,
-  facets: Contract[],
-) {}
+  contracts: Contract[],
+) {
+  const registeredFacets: Facet[] = await diamond.facets();
+
+  let facets: Facet[] = [];
+  contracts.forEach((contract) => {
+    facets.push({
+      target: contract.address,
+      selectors: getContractSelectors(contract),
+    });
+  });
+
+  let facetCuts: FacetCut[] = [];
+  // if selector is not found in the registered selectors then it should be
+  // added to the diamond. this will not include selectors which need to be
+  // replaced following an upgrade.
+  facets.forEach((facet) => {
+    facet.selectors.forEach((selector) => {
+      const target = facet.target;
+      if (
+        target !== diamond.address &&
+        !selectorExistsInFacet(selector, registeredFacets)
+      ) {
+        // TODO: Group selectors into a single object
+        facetCuts.push(
+          printFacetCuts(facet.target, [selector], FacetCutAction.Add),
+        );
+      }
+    });
+  });
 
-// adds selectors, if selector already exists function will update with new address
-export async function upsertSelectors(diamond: Contract, facets: Contract[]) {}
+  return facetCuts;
+}
 
-// removes registered selectors if they are not present in the contracts
+// removes registered selectors
 export async function removeRegisteredSelectors(
   diamond: Contract,
   contracts: Contract[],
@@ -82,10 +112,10 @@ export async function removeRegisteredSelectors(
         target !== diamond.address &&
         !selectorExistsInFacet(selector, facets)
       ) {
-        // TODO: Group removed selectors together in a single object
+        // TODO: Group selectors into a single object
         facetCuts.push(
           printFacetCuts(
-            registeredFacet.target,
+            constants.AddressZero,
             [selector],
             FacetCutAction.Remove,
           ),
@@ -96,3 +126,12 @@ export async function removeRegisteredSelectors(
 
   return facetCuts;
 }
+
+export async function diamondCut(
+  diamond: Contract,
+  facetCut: FacetCut[],
+  target: string = constants.AddressZero,
+  data: string = '0x',
+) {
+  (await diamond.diamondCut(facetCut, target, data)).wait(1);
+}