Add navigation; handle new workflow state on details page

Signed-off-by: Tyler Ohlsen <ohltyler@amazon.com>

Author: ohltyler

common/constants.ts

@@ -29,3 +29,8 @@ export const SEARCH_WORKFLOWS_NODE_API_PATH = `${BASE_WORKFLOW_NODE_API_PATH}/se
 export const GET_WORKFLOW_STATE_NODE_API_PATH = `${BASE_WORKFLOW_NODE_API_PATH}/state`;
 export const CREATE_WORKFLOW_NODE_API_PATH = `${BASE_WORKFLOW_NODE_API_PATH}/create`;
 export const DELETE_WORKFLOW_NODE_API_PATH = `${BASE_WORKFLOW_NODE_API_PATH}/delete`;
+
+/**
+ * MISCELLANEOUS
+ */
+export const NEW_WORKFLOW_ID_URL = 'new';

public/pages/workflow_detail/components/header.tsx

@@ -12,6 +12,7 @@ import { rfContext, AppState, removeDirty } from '../../../store';
 
 interface WorkflowDetailHeaderProps {
   tabs: any[];
+  formattedWorkflowName: string;
   workflow?: Workflow;
 }
 
@@ -22,7 +23,7 @@ export function WorkflowDetailHeader(props: WorkflowDetailHeaderProps) {
 
   return (
     <EuiPageHeader
-      pageTitle={props.workflow ? props.workflow.name : ''}
+      pageTitle={props.formattedWorkflowName}
       rightSideItems={[
         <EuiButton fill={false} onClick={() => {}}>
           Prototype

public/pages/workflow_detail/workflow_detail.tsx

@@ -5,7 +5,7 @@
 
 import React, { useEffect, useState } from 'react';
 import { RouteComponentProps, useLocation } from 'react-router-dom';
-import { useSelector } from 'react-redux';
+import { useDispatch, useSelector } from 'react-redux';
 import { ReactFlowProvider } from 'reactflow';
 import queryString from 'query-string';
 import { EuiPage, EuiPageBody } from '@elastic/eui';
@@ -16,6 +16,7 @@ import { AppState } from '../../store';
 import { ResizableWorkspace } from './workspace';
 import { Launches } from './launches';
 import { Prototype } from './prototype';
+import { NEW_WORKFLOW_ID_URL } from '../../../common';
 
 export interface WorkflowDetailRouterProps {
   workflowId: string;
@@ -45,13 +46,26 @@ function replaceActiveTab(activeTab: string, props: WorkflowDetailProps) {
  * The workflow details page. This is where users will configure, create, and
  * test their created workflows. Additionally, can be used to load existing workflows
  * to view details and/or make changes to them.
+ * New, unsaved workflows are cached in the redux store and displayed here.
  */
+
+// TODO: if exiting the page, or if saving, clear the cached workflow. Can use redux clearCachedWorkflow()
 export function WorkflowDetail(props: WorkflowDetailProps) {
-  const { workflows } = useSelector((state: AppState) => state.workflows);
+  const { workflows, cachedWorkflow } = useSelector(
+    (state: AppState) => state.workflows
+  );
 
-  const workflow = workflows[props.match?.params?.workflowId];
-  const workflowName = workflow ? workflow.name : '';
+  const isNewWorkflow = props.match?.params?.workflowId === NEW_WORKFLOW_ID_URL;
+  const workflow = isNewWorkflow
+    ? cachedWorkflow
+    : workflows[props.match?.params?.workflowId];
+  const workflowName = workflow
+    ? workflow.name
+    : isNewWorkflow && !cachedWorkflow
+    ? 'new_workflow'
+    : '';
 
+  // tab state
   const tabFromUrl = queryString.parse(useLocation().search)[
     ACTIVE_TAB_PARAM
   ] as WORKFLOW_DETAILS_TAB;
@@ -112,7 +126,11 @@ export function WorkflowDetail(props: WorkflowDetailProps) {
     <ReactFlowProvider>
       <EuiPage>
         <EuiPageBody>
-          <WorkflowDetailHeader workflow={workflow} tabs={tabs} />
+          <WorkflowDetailHeader
+            workflow={workflow}
+            formattedWorkflowName={workflowName}
+            tabs={tabs}
+          />
           {selectedTabId === WORKFLOW_DETAILS_TAB.EDITOR && (
             <ResizableWorkspace workflow={workflow} />
           )}

public/pages/workflows/new_workflow/new_workflow.tsx

@@ -11,10 +11,11 @@ import {
   EuiFlexGroup,
   EuiFieldSearch,
 } from '@elastic/eui';
-
+import { useDispatch } from 'react-redux';
 import { UseCase } from './use_case';
 import { getPresetWorkflows } from './presets';
 import { Workflow } from '../../../../common';
+import { cacheWorkflow } from '../../../store';
 
 interface NewWorkflowProps {}
 
@@ -26,6 +27,7 @@ interface NewWorkflowProps {}
  * workflow for users to start with.
  */
 export function NewWorkflow(props: NewWorkflowProps) {
+  const dispatch = useDispatch();
   // preset workflow state
   const presetWorkflows = getPresetWorkflows();
   const [filteredWorkflows, setFilteredWorkflows] = useState<Workflow[]>(
@@ -54,12 +56,20 @@ export function NewWorkflow(props: NewWorkflowProps) {
       </EuiFlexItem>
       <EuiFlexItem>
         <EuiFlexGrid columns={3} gutterSize="l">
-          {filteredWorkflows.map((workflow: Workflow) => {
+          {filteredWorkflows.map((workflow: Workflow, index) => {
             return (
-              <EuiFlexItem>
+              <EuiFlexItem key={index}>
                 <UseCase
                   title={workflow.name}
                   description={workflow.description || ''}
+                  onClick={() =>
+                    dispatch(
+                      cacheWorkflow({
+                        ...workflow,
+                        name: toSnakeCase(workflow.name),
+                      })
+                    )
+                  }
                 />
               </EuiFlexItem>
             );
@@ -81,3 +91,14 @@ function fetchFilteredWorkflows(
         workflow.name.toLowerCase().includes(searchQuery.toLowerCase())
       );
 }
+
+// Utility fn to convert to snakecase. Used when caching the workflow
+// to make a valid name and cause less friction if users decide
+// to save it later on.
+function toSnakeCase(text: string): string {
+  return text
+    .replace(/\W+/g, ' ')
+    .split(/ |\B(?=[A-Z])/)
+    .map((word) => word.toLowerCase())
+    .join('_');
+}

public/pages/workflows/new_workflow/use_case.tsx

@@ -13,9 +13,12 @@ import {
   EuiHorizontalRule,
   EuiButton,
 } from '@elastic/eui';
+import { NEW_WORKFLOW_ID_URL, PLUGIN_ID } from '../../../../common';
+
 interface UseCaseProps {
   title: string;
   description: string;
+  onClick: () => {};
 }
 
 export function UseCase(props: UseCaseProps) {
@@ -40,9 +43,8 @@ export function UseCase(props: UseCaseProps) {
             <EuiButton
               disabled={false}
               isLoading={false}
-              onClick={() => {
-                // TODO: possibly link to the workflow details with a pre-configured flow
-              }}
+              onClick={props.onClick}
+              href={`${PLUGIN_ID}#/workflows/${NEW_WORKFLOW_ID_URL}`}
             >
               Go
             </EuiButton>

public/store/reducers/workflows_reducer.ts

@@ -78,6 +78,7 @@ const initialState = {
   loading: false,
   errorMessage: '',
   workflows: {} as WorkflowDict,
+  cachedWorkflow: undefined as Workflow | undefined,
 };
 
 const WORKFLOWS_ACTION_PREFIX = 'workflows';
@@ -86,6 +87,8 @@ const SEARCH_WORKFLOWS_ACTION = `${WORKFLOWS_ACTION_PREFIX}/searchWorkflows`;
 const GET_WORKFLOW_STATE_ACTION = `${WORKFLOWS_ACTION_PREFIX}/getWorkflowState`;
 const CREATE_WORKFLOW_ACTION = `${WORKFLOWS_ACTION_PREFIX}/createWorkflow`;
 const DELETE_WORKFLOW_ACTION = `${WORKFLOWS_ACTION_PREFIX}/deleteWorkflow`;
+const CACHE_WORKFLOW_ACTION = `${WORKFLOWS_ACTION_PREFIX}/cacheWorkflow`;
+const CLEAR_CACHED_WORKFLOW_ACTION = `${WORKFLOWS_ACTION_PREFIX}/clearCachedWorkflow`;
 
 export const getWorkflow = createAsyncThunk(
   GET_WORKFLOW_ACTION,
@@ -167,6 +170,20 @@ export const deleteWorkflow = createAsyncThunk(
   }
 );
 
+export const cacheWorkflow = createAsyncThunk(
+  CACHE_WORKFLOW_ACTION,
+  async (workflow: Workflow) => {
+    return workflow;
+  }
+);
+
+// A no-op function to trigger a reducer case.
+// Will clear any stored workflow in the cachedWorkflow state
+export const clearCachedWorkflow = createAsyncThunk(
+  CLEAR_CACHED_WORKFLOW_ACTION,
+  async () => {}
+);
+
 const workflowsSlice = createSlice({
   name: 'workflows',
   initialState,
@@ -238,6 +255,13 @@ const workflowsSlice = createSlice({
         state.loading = false;
         state.errorMessage = '';
       })
+      .addCase(cacheWorkflow.fulfilled, (state, action) => {
+        const workflow = action.payload;
+        state.cachedWorkflow = workflow;
+      })
+      .addCase(clearCachedWorkflow.fulfilled, (state, action) => {
+        state.cachedWorkflow = undefined;
+      })
       // Rejected states: set state consistently across all actions
       .addCase(getWorkflow.rejected, (state, action) => {
         state.errorMessage = action.payload as string;