import React from "react";
import ReactDOM from "react-dom";
import { Provider } from "react-redux";
import { Values } from "redux-form-website-template";
import store from "./store";
import showResults from "./showResults";
import SyncValidationForm from "./SyncValidationForm";

const rootEl = document.getElementById("root");

ReactDOM.render(
  <Provider store={store}>
    <div style={{ padding: 15 }}>
      <h2>Synchronous Validation</h2>
      <SyncValidationForm onSubmit={showResults} />
      <Values form="syncValidation" />
    </div>
  </Provider>,
  rootEl
);

const validate = values => {
  const errors = {}
  if (!values.username) {
    errors.username = 'Required'
  } else if (values.username.length > 15) {
    errors.username = 'Must be 15 characters or less'
  }
  if (!values.email) {
    errors.email = 'Required'
  } else if (!/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i.test(values.email)) {
    errors.email = 'Invalid email address'
  }
  if (!values.age) {
    errors.age = 'Required'
  } else if (isNaN(Number(values.age))) {
    errors.age = 'Must be a number'
  } else if (Number(values.age) < 18) {
    errors.age = 'Sorry, you must be at least 18 years old'
  }
  return errors

const warn = values => {
  const warnings = {}
  if (values.age < 19) {
    warnings.age = 'Hmm, you seem a bit young...'
  }
  return warnings
}

const renderField = ({ input, label, type, meta: { touched, error, warning } }) => (
  <div>
    <label>{label}</label>
    <div>
      <input {...input} placeholder={label} type={type}/>
      {touched && ((error && <span>{error}</span>) || (warning && <span>{warning}</span>))}
    </div>
  </div>
)

import React from 'react'
import { Field, reduxForm } from 'redux-form'


const SyncValidationForm = (props) => {
  const { handleSubmit, pristine, reset, submitting } = props
  return (
    <form onSubmit={handleSubmit}>
      <Field name="username" type="text" component={renderField} label="Username"/>
      <Field name="email" type="email" component={renderField} label="Email"/>
      <Field name="age" type="number" component={renderField} label="Age"/>
      <div>
        <button type="submit" disabled={submitting}>Submit</button>
        <button type="button" disabled={pristine || submitting} onClick={reset}>Clear Values</button>
      </div>
    </form>
  )
}

export default reduxForm({
  form: 'syncValidation',  // a unique identifier for this form
  validate,                // <--- validation function given to redux-form
  warn                     // <--- warning function given to redux-form
})(SyncValidationForm)