Adds a start work action step that lets user to choose whether they want

just to create a branch or start working on an issue
(#3621)

Author: sergeibbb

src/plus/startWork/startWork.ts

@@ -133,17 +133,20 @@ export class StartWorkCommand extends QuickCommand<State> {
 				}
 			}
 
+			const result = yield* this.selectCommandStep(state);
+			if (result === StepResultBreak) continue;
+			state.action = result.action;
+
 			await updateContextItems(this.container, context);
 
-			if (state.counter < 1 || state.item == null) {
+			if (state.counter < 1 || (state.item == null && !state.action)) {
 				const result = yield* this.pickIssueStep(state, context);
 				if (result === StepResultBreak) continue;
 				state.item = result;
 			}
 
-			assertsStartWorkStepState(state);
-
 			if (state.action == null && this.confirm(state.confirm)) {
+				assertsStartWorkStepState(state);
 				const result = yield* this.confirmStep(state, context);
 				if (result === StepResultBreak) {
 					state.item = undefined!;
@@ -153,8 +156,8 @@ export class StartWorkCommand extends QuickCommand<State> {
 				state.action = result;
 			}
 
-			const issue = state.item.item.issue;
-			const repo = await getOrOpenIssueRepository(this.container, issue);
+			const issue = state.item?.item?.issue;
+			const repo = issue && (await getOrOpenIssueRepository(this.container, issue));
 
 			if (typeof state.action === 'string') {
 				switch (state.action) {
@@ -166,7 +169,7 @@ export class StartWorkCommand extends QuickCommand<State> {
 								state: {
 									subcommand: 'create',
 									repo: repo,
-									name: slug(`${issue.id}-${issue.title}`),
+									name: issue ? slug(`${issue.id}-${issue.title}`) : undefined,
 									suggestNameOnly: true,
 									suggestRepoOnly: true,
 								},
@@ -183,6 +186,20 @@ export class StartWorkCommand extends QuickCommand<State> {
 		return state.counter < 0 ? StepResultBreak : undefined;
 	}
 
+	private *selectCommandStep(state: StepState<State>): StepResultGenerator<{ action?: StartWorkAction }> {
+		const step = createPickStep({
+			placeholder: 'Start work by creating a new branch',
+			items: [
+				createQuickPickItemOfT('Create a branch', {
+					action: 'start',
+				}),
+				createQuickPickItemOfT('Create a branch from an issue', {}),
+			],
+		});
+		const selection: StepSelection<typeof step> = yield step;
+		return canPickStepContinue(step, state, selection) ? selection[0].item : StepResultBreak;
+	}
+
 	private async *confirmLocalIntegrationConnectStep(
 		state: StepState<State>,
 		context: Context,