import { CompletionItemKind } from "vscode-languageserver/lib/main";
import Completers from "../../classes/Completers";
import NodeCompleter from "../../classes/completers/NodesCompleter";
import UICompleter from "../../classes/completers/UICompleter";

jest.mock("fs");

describe("Initializtion", () => {

    require("fs").__setMockFiles({
        testItems: ["NodesCompleter.js", "NodesCompleter.js.map", "UICompleter.js", "UICompleter.js.map"]
    });

    it("Should import the completers' modules and push them into the completer's array",
        () => {
            const expectedCompleters = [
                new NodeCompleter,
                new UICompleter
            ];
            const completers = new Completers();
            return completers.init().then(() => {
                expect(expectedCompleters).toEqual(completers.completers);
            });
        });

});

describe("Updating the completer modules' project paths", () => {

    it("Should iterate over the completer modules' and update their project path", () => {
        const expectedProjectPath = 'c:/fake/path/';
        const completers = new Completers();
        return completers.init().then(() => {
            completers.setPath(expectedProjectPath);
            for (const completer of completers.completers) {
                expect(completer.projectPath).toEqual(expectedProjectPath);
            }
        });

    });

});

describe("Getting all of the available completions for the project", () => {

    it("Should iterate over the completer modules' and return a concatenated array of all completion items", () => {
        const expectedCompletionItems = [
            {
                label: "a",
                kind: CompletionItemKind.Constant,
                detail: "Node"
            },
            {
                label: "b",
                kind: CompletionItemKind.Constant,
                detail: "Node"
            },
            {
                label: "a",
                kind: CompletionItemKind.Function,
                detail: "eko_ui_0",
                documentation: {
                    kind: "markdown",
                    value: ""
                }
            },
            {
                label: "b",
                kind: CompletionItemKind.Function,
                detail: "eko_ui_1",
                documentation: {
                    kind: "markdown",
                    value: ""
                }
            }
        ]
        const completers = new Completers();
        return completers.init().then(() => {
            const completionItems = completers.getItems({ textDocument: { uri: 'some uri' }, position: { line: 0, character: 0 } });
            expect(completionItems).toEqual(expectedCompletionItems);
        });
    });

});