import React, { Component } from 'react';

import { connect } from 'react-redux';

import { bindActionCreators } from 'redux';

import { Trans } from 'react-i18next';

import * as authActions from '../actions/authActions';

import { getLoginErrorMessages } from '../selectors/authSelectors';

import * as R from 'ramda';

class Login extends Component {

  state = {

    username: '',

    password: ''

  }

  handleInputChange = (e) => {

    const target = e.target;

    const value = target.value;

    const name = target.name;

    this.setState({

      [name]: value

    });

  }

  login = () => {

    const { username, password } = this.state;

    this.props.authActions.loginSubmit(username, password);

  }

  submit = (e) => {

    e.preventDefault();

    this.login();

  }

  onClickRegister = (e) => {

    e.preventDefault();

    this.props.history.push('/register');

  }

  onClickReset = (e) => {

    e.preventDefault();

    this.props.history.push('/reset');

  }

  renderErrorMessage(errorMessages, fieldname) {

    if (errorMessages && errorMessages.has(fieldname)) {

      return errorMessages.get(fieldname).map((message, key) =>

        <p className="form-text" key={ key }>{ message }</p>

      );

    }

  }

  renderNonFieldErrors(errorMessages) {

    if (errorMessages && errorMessages.error) {

      return (

        <div className="alert alert-danger mt-4" role="alert">

          <Trans i18nKey="login.login_error">Unable to log in.</Trans>

        </div>

      )

    }

    const errors = R.reduce(

      (acc, p) => R.concat(acc, R.ifElse(Array.isArray, R.identity, v => [v,])(R.pathOr([], ['data', p], errorMessages))),

      [],

      ['non_field_errors', 'detail']

    );

    if (errors && errors.length > 0 ) {

      return (

        <div className="alert alert-danger mt-4" role="alert">

        { errors.map((message, key) =>

          <p key={ key }><Trans i18nKey="login.credentials_error">{ message }</Trans></p>

        ) }

        </div>

      )

    }

  }

  render() {

    const errorMessages = this.props.errorMessages;

    return (

      <div>

        {/* <Navbar history={this.props.history} /> */}

        <div className="container-fluid">

          <div className="row">

            <div className="col-lg-6 offset-md-3">

              <div className="panel-login panel panel-default">

                <div className="card-header bg-secondary border-0 mt-5 pt-5">

                  <h4 className="text-center card-title font-weight-bold text-lg">IRI Notes</h4>

                  <form className="pt-3 ml-5 pl-5" onSubmit={this.submit}>

                    <div className="form-group mb-2 ml-3 w-75" >

                      <label className="col-form-label text-primary font-weight-bold mt-2 text-capitalize"><Trans i18nKey="common.username">Nom d'utilisateur</Trans></label>

                      <input className="form-control bg-irinotes-form border-0 text-muted" type="text" onChange={this.handleInputChange} name="username" />

                      {/* { this.renderErrorMessage(errorMessages, 'username') } */}

                    </div>

                    <div className="form-group mb-2 ml-3 w-75">

                      <label className="col-form-label text-primary font-weight-bold mt-2 text-capitalize"><Trans i18nKey="common.password">Mot de passe</Trans></label>

                      <input className="form-control bg-irinotes-form border-0 text-muted" type="password" onChange={this.handleInputChange} name="password" />

                      {/* { this.renderErrorMessage(errorMessages, 'password') } */}

                    </div>

                    { this.renderNonFieldErrors(errorMessages) }

                    <div className="text-center mr-5 pr-5">

                    <button type="submit" className="btn btn-primary btn-lg text-secondary font-weight-bold mt-3 text-capitalize"><Trans i18nKey='common.connect'>Se connecter</Trans></button>

                    </div>

                  </form>

                </div>

              </div>

              <p className="text-center">

                <a className="text-muted" href="/register" onClick={ this.onClickRegister }><Trans i18nKey='login.registration_message'>Pas encore inscrit ? Créer un compte</Trans></a>

              </p>

            </div>

          </div>

        </div>

      </div>

    );

  }

}

function mapStateToProps(state, props) {

  return {

    errorMessages: getLoginErrorMessages(state)

  };

}

function mapDispatchToProps(dispatch) {

  return {

    authActions: bindActionCreators(authActions, dispatch)

  }

}

export default connect(mapStateToProps, mapDispatchToProps)(Login);