package fourslash_test

import (
	"testing"

	"github.com/microsoft/typescript-go/internal/fourslash"
	. "github.com/microsoft/typescript-go/internal/fourslash/tests/util"
	"github.com/microsoft/typescript-go/internal/ls"
	"github.com/microsoft/typescript-go/internal/lsp/lsproto"
	"github.com/microsoft/typescript-go/internal/testutil"
)

// TestAutoImportNodeBuiltinNodenext is a regression test for
// https://github.com/microsoft/typescript-go/issues/2555, where auto-imports
// for Node.js built-in modules (e.g. "fs") were not appearing when using
// module: nodenext and types: ["node"].
func TestAutoImportNodeBuiltinNodenext(t *testing.T) {
	t.Parallel()
	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
	const content = `// @Filename: /tsconfig.json
{ "compilerOptions": { "module": "nodenext", "types": ["node"] } }
// @Filename: /package.json
{ "type": "module" }
// @Filename: /node_modules/@types/node/package.json
{ "name": "@types/node", "version": "22.0.0" }
// @Filename: /node_modules/@types/node/index.d.ts
declare module "fs" {
    export function existsSync(path: string): boolean;
    export function mkdirSync(path: string, options?: { recursive?: boolean }): void;
}
declare module "node:fs" { export * from "fs"; }
// @Filename: /index.ts
existsSync/**/`
	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
	defer done()
	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
		IsIncomplete: false,
		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
			CommitCharacters: &DefaultCommitCharacters,
			EditRange:        Ignored,
		},
		Items: &fourslash.CompletionsExpectedItems{
			Includes: []fourslash.CompletionsExpectedItem{
				&lsproto.CompletionItem{
					Label: "existsSync",
					Data: &lsproto.CompletionItemData{
						AutoImport: &lsproto.AutoImportFix{
							ModuleSpecifier: "node:fs",
						},
					},
					AdditionalTextEdits: fourslash.AnyTextEdits,
					SortText:            new(string(ls.SortTextAutoImportSuggestions)),
				},
			},
		},
	})
}