// Copyright (C) The Arvados Authors. All rights reserved.
//
// SPDX-License-Identifier: AGPL-3.0

import * as React from "react";
import { mount, configure } from "enzyme";
import { SearchBarView, DEFAULT_SEARCH_DEBOUNCE } from "./search-bar-view";

import * as Adapter from 'enzyme-adapter-react-16';


configure({ adapter: new Adapter() });

describe("<SearchBarView />", () => {

    jest.useFakeTimers();

    let onSearch: () => void;

    beforeEach(() => {
        onSearch = jest.fn();
    });

    describe("on submit", () => {
        it("calls onSearch with current value", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="current value" {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            searchBar.find("form").simulate("submit");
            expect(onSearch).toBeCalledWith("current value");
        });

        it("calls onSearch with new value passed via props", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="current value" {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "new value" } });
            searchBar.setProps({ value: "new value" });
            searchBar.find("form").simulate("submit");
            expect(onSearch).toBeCalledWith("new value");
        });

        it("cancels timeout set on input value change", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} debounce={1000} value="current value" {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            searchBar.find("form").simulate("submit");
            jest.runTimersToTime(1000);
            expect(onSearch).toHaveBeenCalledTimes(1);
            expect(onSearch).toBeCalledWith("current value");
        });

    });

    describe("on input value change", () => {
        it("calls onSearch after default timeout", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="current value" {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            expect(onSearch).not.toBeCalled();
            jest.runTimersToTime(DEFAULT_SEARCH_DEBOUNCE);
            expect(onSearch).toBeCalledWith("current value");
        });

        it("calls onSearch after the time specified in props has passed", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="current value" debounce={2000} {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            jest.runTimersToTime(1000);
            expect(onSearch).not.toBeCalled();
            jest.runTimersToTime(1000);
            expect(onSearch).toBeCalledWith("current value");
        });

        it("calls onSearch only once after no change happened during the specified time", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="current value" debounce={1000} {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            jest.runTimersToTime(500);
            searchBar.find("input").simulate("change", { target: { value: "changed value" } });
            jest.runTimersToTime(1000);
            expect(onSearch).toHaveBeenCalledTimes(1);
        });

        it("calls onSearch again after the specified time has passed since previous call", () => {
            const searchBar = mount(<SearchBarView onSearch={onSearch} value="latest value" debounce={1000} {...mockSearchProps()} />);
            searchBar.find("input").simulate("change", { target: { value: "current value" } });
            jest.runTimersToTime(500);
            searchBar.find("input").simulate("change", { target: { value: "intermediate value" } });
            jest.runTimersToTime(1000);
            expect(onSearch).toBeCalledWith("intermediate value");
            searchBar.find("input").simulate("change", { target: { value: "latest value" } });
            jest.runTimersToTime(1000);
            expect(onSearch).toBeCalledWith("latest value");
            expect(onSearch).toHaveBeenCalledTimes(2);

        });
    });
});

const mockSearchProps = () => ({
    currentView: '',
    open: true,
    onSetView: jest.fn(),
    openView: jest.fn(),
    loseView: jest.fn(),
    closeView: jest.fn(),
    saveQuery: jest.fn(),
    loadQueries: () => ['test']
});