scm-ui: new repository layout

scm-ui/ui-webapp/src/modules/pending.js

@@ -0,0 +1,88 @@
+// @flow
+import type { Action } from "@scm-manager/ui-types";
+import * as types from "./types";
+
+const PENDING_SUFFIX = "_" + types.PENDING_SUFFIX;
+const RESET_ACTIONTYPES = [
+  types.SUCCESS_SUFFIX,
+  types.FAILURE_SUFFIX,
+  types.RESET_SUFFIX
+];
+
+function removeFromState(state: Object, identifier: string) {
+  let newState = {};
+  for (let childType in state) {
+    if (childType !== identifier) {
+      newState[childType] = state[childType];
+    }
+  }
+  return newState;
+}
+
+function removeAllEntriesOfIdentifierFromState(
+  state: Object,
+  payload: any,
+  identifier: string
+) {
+  const newState = {};
+  for (let childType in state) {
+    if (childType !== identifier && !childType.startsWith(identifier)) {
+      newState[childType] = state[childType];
+    }
+  }
+  return newState;
+}
+
+function extractIdentifierFromPending(action: Action) {
+  const type = action.type;
+  let identifier = type.substring(0, type.length - PENDING_SUFFIX.length);
+  if (action.itemId) {
+    identifier += "/" + action.itemId;
+  }
+  return identifier;
+}
+
+export default function reducer(
+  state: Object = {},
+  action: Action = { type: "UNKNOWN" }
+): Object {
+  const type = action.type;
+  if (type.endsWith(PENDING_SUFFIX)) {
+    const identifier = extractIdentifierFromPending(action);
+    return {
+      ...state,
+      [identifier]: true
+    };
+  } else {
+    const index = type.lastIndexOf("_");
+    if (index > 0) {
+      const actionType = type.substring(index + 1);
+      if (RESET_ACTIONTYPES.indexOf(actionType) >= 0 || action.resetPending) {
+        let identifier = type.substring(0, index);
+        if (action.itemId) {
+          identifier += "/" + action.itemId;
+        }
+        if (action.payload)
+          return removeAllEntriesOfIdentifierFromState(state, action.payload, identifier);
+        else
+          return removeFromState(state, identifier);
+      }
+    }
+  }
+  return state;
+}
+
+export function isPending(
+  state: Object,
+  actionType: string,
+  itemId?: string | number
+) {
+  let type = actionType;
+  if (itemId) {
+    type += "/" + itemId;
+  }
+  if (state.pending && state.pending[type]) {
+    return true;
+  }
+  return false;
+}