import React from "react";
import { Link, useLocation } from "react-router-dom";
import { connect } from "react-redux";
import { getCurrentUser } from "selectors/usersSelectors";
import styled from "styled-components";
import StyledHeader from "components/designSystems/appsmith/StyledHeader";
import CustomizedDropdown from "./CustomizedDropdown";
import DropdownProps from "./CustomizedDropdown/HeaderDropdownData";
import { AppState } from "reducers";
import { User, ANONYMOUS_USERNAME } from "constants/userConstants";
import Logo from "assets/images/appsmith_logo.png";
import { AUTH_LOGIN_URL, APPLICATIONS_URL } from "constants/routes";
import Button from "components/editorComponents/Button";
import history from "utils/history";

const StyledPageHeader = styled(StyledHeader)`
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: ${props => props.theme.spaces[4]}px
    ${props => props.theme.spaces[4]}px;
`;

const StyledDropDownContainer = styled.div``;

const LogoContainer = styled.div`
  .logoimg {
    width: 15%;
  }
`;

type PageHeaderProps = {
  user?: User;
};

export const PageHeader = (props: PageHeaderProps) => {
  const { user } = props;
  const location = useLocation();
  const queryParams = new URLSearchParams(location.search);
  let loginUrl = AUTH_LOGIN_URL;
  if (queryParams.has("redirectTo")) {
    loginUrl += `?redirectTo=${queryParams.get("redirectTo")}`;
  }

  return (
    <StyledPageHeader>
      <LogoContainer>
        <Link to={APPLICATIONS_URL}>
          <img className="logoimg" src={Logo} alt="Appsmith Logo" />
        </Link>
      </LogoContainer>
      {user && (
        <StyledDropDownContainer>
          {user.username === ANONYMOUS_USERNAME ? (
            <Button
              filled
              text="Sign In"
              intent={"primary"}
              size="small"
              onClick={() => history.push(loginUrl)}
            />
          ) : (
            <CustomizedDropdown {...DropdownProps(user, user.username)} />
          )}
        </StyledDropDownContainer>
      )}
    </StyledPageHeader>
  );
};

const mapStateToProps = (state: AppState) => ({
  user: getCurrentUser(state),
});

export default connect(mapStateToProps)(PageHeader);