import React from 'react';
import brandImg2 from '../../assets/brandImgColor2.svg';
import {
  LoginFooterItem,
  LoginForm,
  LoginMainFooterBandItem,
  LoginMainFooterLinksItem,
  LoginPage,
  ListItem,
  ListVariant
} from '@patternfly/react-core';
import ExclamationCircleIcon from '@patternfly/react-icons/dist/esm/icons/exclamation-circle-icon';

export const SimpleLoginPage: React.FunctionComponent = () => {
  const [showHelperText, setShowHelperText] = React.useState(false);
  const [username, setUsername] = React.useState('');
  const [isValidUsername, setIsValidUsername] = React.useState(true);
  const [password, setPassword] = React.useState('');
  const [isValidPassword, setIsValidPassword] = React.useState(true);
  const [isRememberMeChecked, setIsRememberMeChecked] = React.useState(false);

  const handleUsernameChange = (_event: React.FormEvent<HTMLInputElement>, value: string) => {
    setUsername(value);
  };

  const handlePasswordChange = (_event: React.FormEvent<HTMLInputElement>, value: string) => {
    setPassword(value);
  };

  const onRememberMeClick = () => {
    setIsRememberMeChecked(!isRememberMeChecked);
  };

  const onLoginButtonClick = (event: React.MouseEvent<HTMLButtonElement, MouseEvent>) => {
    event.preventDefault();
    setIsValidUsername(!!username);
    setIsValidPassword(!!password);
    setShowHelperText(!username || !password);
  };

  const socialMediaLoginContent = (
    <React.Fragment>
      <LoginMainFooterLinksItem
        href="https://www.patternfly.org/"
        linkComponentProps={{ 'aria-label': 'Login with Google' }}
      >
        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 488 512">
          <path d="M488 261.8C488 403.3 391.1 504 248 504 110.8 504 0 393.2 0 256S110.8 8 248 8c66.8 0 123 24.5 166.3 64.9l-67.5 64.9C258.5 52.6 94.3 116.6 94.3 256c0 86.5 69.1 156.6 153.7 156.6 98.2 0 135-70.4 140.8-106.9H248v-85.3h236.1c2.3 12.7 3.9 24.9 3.9 41.4z" />
        </svg>
      </LoginMainFooterLinksItem>
      <LoginMainFooterLinksItem
        href="https://www.patternfly.org/"
        linkComponentProps={{ 'aria-label': 'Login with Github' }}
      >
        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512">
          <path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z" />
        </svg>
      </LoginMainFooterLinksItem>
      <LoginMainFooterLinksItem
        href="https://www.patternfly.org/"
        linkComponentProps={{ 'aria-label': 'Login with Dropbox' }}
      >
        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 528 512">
          <path d="M264.4 116.3l-132 84.3 132 84.3-132 84.3L0 284.1l132.3-84.3L0 116.3 132.3 32l132.1 84.3zM131.6 395.7l132-84.3 132 84.3-132 84.3-132-84.3zm132.8-111.6l132-84.3-132-83.6L395.7 32 528 116.3l-132.3 84.3L528 284.8l-132.3 84.3-131.3-85z" />
        </svg>
      </LoginMainFooterLinksItem>
      <LoginMainFooterLinksItem
        href="https://www.patternfly.org/"
        linkComponentProps={{ 'aria-label': 'Login with Facebook' }}
      >
        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512">
          <path d="M448 56.7v398.5c0 13.7-11.1 24.7-24.7 24.7H309.1V306.5h58.2l8.7-67.6h-67v-43.2c0-19.6 5.4-32.9 33.5-32.9h35.8v-60.5c-6.2-.8-27.4-2.7-52.2-2.7-51.6 0-87 31.5-87 89.4v49.9h-58.4v67.6h58.4V480H24.7C11.1 480 0 468.9 0 455.3V56.7C0 43.1 11.1 32 24.7 32h398.5c13.7 0 24.8 11.1 24.8 24.7z" />
        </svg>
      </LoginMainFooterLinksItem>
      <LoginMainFooterLinksItem
        href="https://www.patternfly.org/"
        linkComponentProps={{ 'aria-label': 'Login with Gitlab' }}
      >
        <svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
          <path d="M29.782 199.732L256 493.714 8.074 309.699c-6.856-5.142-9.712-13.996-7.141-21.993l28.849-87.974zm75.405-174.806c-3.142-8.854-15.709-8.854-18.851 0L29.782 199.732h131.961L105.187 24.926zm56.556 174.806L256 493.714l94.257-293.982H161.743zm349.324 87.974l-28.849-87.974L256 493.714l247.926-184.015c6.855-5.142 9.711-13.996 7.141-21.993zm-85.404-262.78c-3.142-8.854-15.709-8.854-18.851 0l-56.555 174.806h131.961L425.663 24.926z" />
        </svg>
      </LoginMainFooterLinksItem>
    </React.Fragment>
  );

  const signUpForAccountMessage = (
    <LoginMainFooterBandItem>
      Need an account? <a href="https://www.patternfly.org/">Sign up.</a>
    </LoginMainFooterBandItem>
  );

  const forgotCredentials = (
    <LoginMainFooterBandItem>
      <a href="https://www.patternfly.org/">Forgot username or password?</a>
    </LoginMainFooterBandItem>
  );

  const listItem = (
    <React.Fragment>
      <ListItem>
        <LoginFooterItem href="https://www.patternfly.org/">Terms of Use </LoginFooterItem>
      </ListItem>
      <ListItem>
        <LoginFooterItem href="https://www.patternfly.org/">Help</LoginFooterItem>
      </ListItem>
      <ListItem>
        <LoginFooterItem href="https://www.patternfly.org/">Privacy Policy</LoginFooterItem>
      </ListItem>
    </React.Fragment>
  );

  const loginForm = (
    <LoginForm
      showHelperText={showHelperText}
      helperText="Invalid login credentials."
      helperTextIcon={<ExclamationCircleIcon />}
      usernameLabel="Username"
      usernameValue={username}
      onChangeUsername={handleUsernameChange}
      isValidUsername={isValidUsername}
      passwordLabel="Password"
      passwordValue={password}
      onChangePassword={handlePasswordChange}
      isValidPassword={isValidPassword}
      rememberMeLabel="Keep me logged in for 30 days."
      isRememberMeChecked={isRememberMeChecked}
      onChangeRememberMe={onRememberMeClick}
      onLoginButtonClick={onLoginButtonClick}
      loginButtonLabel="Log in"
    />
  );

  return (
    <LoginPage
      footerListVariants={ListVariant.inline}
      brandImgSrc={brandImg2}
      brandImgAlt="PatternFly logo"
      backgroundImgSrc="/assets/images/pfbg-icon.svg"
      footerListItems={listItem}
      textContent="This is placeholder text only. Use this area to place any information or introductory message about your application that may be relevant to users."
      loginTitle="Log in to your account"
      loginSubtitle="Enter your single sign-on LDAP credentials."
      socialMediaLoginContent={socialMediaLoginContent}
      socialMediaLoginAriaLabel="Log in with social media"
      signUpForAccountMessage={signUpForAccountMessage}
      forgotCredentials={forgotCredentials}
    >
      {loginForm}
    </LoginPage>
  );
};