Added possibility to fetch changesets by branches

scm-ui/src/repos/modules/branches.js

@@ -50,4 +50,45 @@ export function fetchBranchesFailure(namespace: string, name: string, error: Err
 
 // Reducers
 
+export default function reducer(state: Object = {}, action: Action = {type: "UNKNOWN"}): Object {
+  switch (action.type) {
+    case FETCH_BRANCHES_SUCCESS:
+      const key = action.payload.namespace + "/" + action.payload.name;
+      let oldBranchesByNames = {[key]: {}};
+      if (state[key] !== undefined) {
+        oldBranchesByNames[key] = state[key]
+      }
+      return {
+        [key]: {
+          byNames: extractBranchesByNames(action.payload.data, oldBranchesByNames[key].byNames)
+        }
+      };
+    default:
+      return state;
+  }
+
+}
+
+function extractBranchesByNames(data: any, oldBranchesByNames: any): Branch[] {
+  const branches = data._embedded.branches;
+  const branchesByNames = {};
+
+  for (let branch of branches) {
+    branchesByNames[branch.name] = branch;
+  }
+
+  for (let name in oldBranchesByNames) {
+    branchesByNames[name] = oldBranchesByNames[name]
+  }
+  return branchesByNames;
+}
+
 // Selectors
+
+export function getBranchesForNamespaceAndNameFromState(namespace: string, name: string, state: Object) {
+  const key = namespace + "/" + name;
+  if (!state.branches[key]) {
+    return null;
+  }
+  return Object.values(state.branches[key].byNames);
+}