// @flow
import React from "react";
import {mount, shallow} from "enzyme";
import "./tests/enzyme";
import "./tests/i18n";
import ReactRouterEnzymeContext from "react-router-enzyme-context";
import Paginator from "./Paginator";

describe("paginator rendering tests", () => {

  const options = new ReactRouterEnzymeContext();

  const dummyLink = {
    href: "https://dummy"
  };

  it("should render all buttons but disabled, without links", () => {
    const collection = {
      page: 10,
      pageTotal: 20,
      _links: {},
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(7);
    for (let button of buttons) {
      expect(button.props.disabled).toBeTruthy();
    }
  });

  it("should render buttons for first page", () => {
    const collection = {
      page: 0,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        next: dummyLink,
        last: dummyLink
      },
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(5);

    // previous button
    expect(buttons.get(0).props.disabled).toBeTruthy();
    // last button
    expect(buttons.get(1).props.disabled).toBeFalsy();
    // first button
    const firstButton = buttons.get(2).props;
    expect(firstButton.disabled).toBeTruthy();
    expect(firstButton.label).toBe(1);

    // next button
    const nextButton = buttons.get(3).props;
    expect(nextButton.disabled).toBeFalsy();
    expect(nextButton.label).toBe("2");

    // last button
    const lastButton = buttons.get(4).props;
    expect(lastButton.disabled).toBeFalsy();
    expect(lastButton.label).toBe("148");
  });

  it("should render buttons for second page", () => {
    const collection = {
      page: 1,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        prev: dummyLink,
        next: dummyLink,
        last: dummyLink
      },
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(6);

    // previous button
    expect(buttons.get(0).props.disabled).toBeFalsy();
    // last button
    expect(buttons.get(1).props.disabled).toBeFalsy();
    // first button
    const firstButton = buttons.get(2).props;
    expect(firstButton.disabled).toBeFalsy();
    expect(firstButton.label).toBe("1");

    // current button
    const currentButton = buttons.get(3).props;
    expect(currentButton.disabled).toBeTruthy();
    expect(currentButton.label).toBe(2);

    // next button
    const nextButton = buttons.get(4).props;
    expect(nextButton.disabled).toBeFalsy();
    expect(nextButton.label).toBe("3");

    // last button
    const lastButton = buttons.get(5).props;
    expect(lastButton.disabled).toBeFalsy();
    expect(lastButton.label).toBe("148");
  });

  it("should render buttons for last page", () => {
    const collection = {
      page: 147,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        prev: dummyLink
      },
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(5);

    // previous button
    expect(buttons.get(0).props.disabled).toBeFalsy();
    // last button
    expect(buttons.get(1).props.disabled).toBeTruthy();
    // first button
    const firstButton = buttons.get(2).props;
    expect(firstButton.disabled).toBeFalsy();
    expect(firstButton.label).toBe("1");

    // next button
    const nextButton = buttons.get(3).props;
    expect(nextButton.disabled).toBeFalsy();
    expect(nextButton.label).toBe("147");

    // last button
    const lastButton = buttons.get(4).props;
    expect(lastButton.disabled).toBeTruthy();
    expect(lastButton.label).toBe(148);
  });

  it("should render buttons for penultimate page", () => {
    const collection = {
      page: 146,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        prev: dummyLink,
        next: dummyLink,
        last: dummyLink
      },
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(6);

    // previous button
    expect(buttons.get(0).props.disabled).toBeFalsy();
    // last button
    expect(buttons.get(1).props.disabled).toBeFalsy();

    // first button
    const firstButton = buttons.get(2).props;
    expect(firstButton.disabled).toBeFalsy();
    expect(firstButton.label).toBe("1");

    const currentButton = buttons.get(3).props;
    expect(currentButton.disabled).toBeFalsy();
    expect(currentButton.label).toBe("146");

    // current button
    const nextButton = buttons.get(4).props;
    expect(nextButton.disabled).toBeTruthy();
    expect(nextButton.label).toBe(147);

    // last button
    const lastButton = buttons.get(5).props;
    expect(lastButton.disabled).toBeFalsy();
    expect(lastButton.label).toBe("148");
  });

  it("should render buttons for a page in the middle", () => {
    const collection = {
      page: 41,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        prev: dummyLink,
        next: dummyLink,
        last: dummyLink
      },
      _embedded: {}
    };

    const paginator = shallow(
      <Paginator collection={collection} />,
      options.get()
    );
    const buttons = paginator.find("Button");
    expect(buttons.length).toBe(7);

    // previous button
    expect(buttons.get(0).props.disabled).toBeFalsy();
    // next button
    expect(buttons.get(1).props.disabled).toBeFalsy();

    // first button
    const firstButton = buttons.get(2).props;
    expect(firstButton.disabled).toBeFalsy();
    expect(firstButton.label).toBe("1");

    // previous Button
    const previousButton = buttons.get(3).props;
    expect(previousButton.disabled).toBeFalsy();
    expect(previousButton.label).toBe("41");

    // current button
    const currentButton = buttons.get(4).props;
    expect(currentButton.disabled).toBeTruthy();
    expect(currentButton.label).toBe(42);

    // next button
    const nextButton = buttons.get(5).props;
    expect(nextButton.disabled).toBeFalsy();
    expect(nextButton.label).toBe("43");

    // last button
    const lastButton = buttons.get(6).props;
    expect(lastButton.disabled).toBeFalsy();
    expect(lastButton.label).toBe("148");
  });

  it("should call the function with the last previous url", () => {
    const collection = {
      page: 41,
      pageTotal: 148,
      _links: {
        first: dummyLink,
        prev: {
          href: "https://www.scm-manager.org"
        },
        next: dummyLink,
        last: dummyLink
      },
      _embedded: {}
    };

    let urlToOpen;
    const callMe = (url: string) => {
      urlToOpen = url;
    };

    const paginator = mount(
      <Paginator collection={collection} onPageChange={callMe} />,
      options.get()
    );
    paginator.find("Button.pagination-previous").simulate("click");

    expect(urlToOpen).toBe("https://www.scm-manager.org");
  });
});