Add Subscribe email validation (#97)

* refactor(AuthModal): move email validator to utils

* refactor(utils/validators): change email validation to regexp

* feat(Subscribe): add email and serve response validation

* refactor(Button): change secondary variant styles

* feat(Subscribe): styling controls

* fix(Subscribe): call email accessor

* fix(Subscribe): button non full width in ios

src/components/Discours/Subscribe.module.scss

@@ -1,47 +1,77 @@
-.subscribeForm {
+@mixin input-placeholder-overflow($direction: 'down') {
+  @if $direction == 'down' {
+    @media (max-width: 1410px) {
+      @content;
+    }
+  } @else if $direction == 'up' {
+    @media (min-width: 1411px) {
+      @content;
+    }
+  } @else {
+    @error "Unknown direction #{$direction}.";
+  }
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+
+  @include input-placeholder-overflow(down) {
+    margin-bottom: 2.4rem;
+  }
+}
+
+.controls {
   display: flex;
   width: 100%;
 
-  @include media-breakpoint-down(md) {
-    margin-bottom: 2.4rem;
-  }
-
-  @include media-breakpoint-between(md, xl) {
+  @include input-placeholder-overflow(down) {
     flex-direction: column;
   }
 
-  input {
+  .input {
     @include font-size(2rem);
 
     background: none;
-    border: none;
-    border-bottom: 1px solid;
     color: #fff;
     font-family: inherit;
     margin: 0;
     overflow: hidden;
     text-overflow: ellipsis;
-    padding: 0.2em 0.5em 0.3em 0;
+    padding: 0.2em 0.5em 0.2em 0.5em;
     width: 100%;
+    outline: none;
+    border: 1px solid #fff;
+    border-radius: 0;
+    height: 4rem;
+
+    @include input-placeholder-overflow(up) {
+      border-right: none;
+    }
+
+    @include input-placeholder-overflow(down) {
+      border-bottom: none;
+    }
 
     &::placeholder {
-      color: #fff;
+      color: #858585;
     }
   }
 
-  a {
-    @include font-size(1.5rem);
-
-    align-items: center;
-    background: #fff;
-    border: none;
-    color: #000;
-    display: flex;
-    padding: 0 0.5em;
-  }
-
   .button {
     border-radius: 0;
-    margin: 0;
+    flex-shrink: 0;
+
+    @include input-placeholder-overflow(down) {
+      width: 100%;
+    }
   }
 }
+
+.error {
+  position: relative;
+  top: 4px;
+  font-size: 12px;
+  line-height: 16px;
+  color: #d00820;
+}

src/components/Discours/Subscribe.tsx

@@ -1,14 +1,43 @@
-import { createSignal, Show } from 'solid-js'
-import styles from './Subscribe.module.scss'
+import { createSignal, JSX, Show } from 'solid-js'
 
-import { clsx } from 'clsx'
 import { useLocalize } from '../../context/localize'
+import { isValidEmail } from '../../utils/validators'
+import { Button } from '../_shared/Button'
+
+import styles from './Subscribe.module.scss'
 
 export default () => {
   const { t } = useLocalize()
-  let emailElement: HTMLInputElement | undefined
+
   const [title, setTitle] = createSignal('')
-  const subscribe = async () => {
+  const [email, setEmail] = createSignal('')
+  const [emailError, setEmailError] = createSignal<string>(null)
+
+  const validate = (): boolean => {
+    if (!email()) {
+      setEmailError(t('Please enter email'))
+      return false
+    }
+
+    if (!isValidEmail(email())) {
+      setEmailError(t('Please check your email address'))
+      return false
+    }
+
+    setEmailError(null)
+    return true
+  }
+
+  const handleInput: JSX.ChangeEventHandlerUnion<HTMLInputElement, Event> = (event) => {
+    setEmailError(null)
+    setEmail(event.target.value)
+  }
+
+  const handleSubmit = async (event: SubmitEvent) => {
+    event.preventDefault()
+
+    if (!validate()) return
+
     setTitle(t('...subscribing'))
 
     const requestOptions = {
@@ -16,26 +45,42 @@ export default () => {
       headers: {
         'Content-Type': 'application/json'
       },
-      body: JSON.stringify({
-        email: emailElement?.value
-      })
+      body: JSON.stringify({ email: email() })
     }
 
-    const r = await fetch('/api/newsletter', requestOptions)
-    setTitle(r.ok ? t('You are subscribed') : '')
+    const response = await fetch('/api/newsletter', requestOptions)
+
+    if (response.ok) {
+      setTitle(t('You are subscribed'))
+    } else {
+      if (response.status === 400) {
+        setEmailError(t('Please check your email address'))
+      } else {
+        setEmailError(t('Something went wrong, please try again'))
+      }
+
+      setTitle('')
+    }
   }
 
   return (
-    <div class={styles.subscribeForm}>
+    <form class={styles.form} onSubmit={handleSubmit} novalidate>
       <Show when={!title()} fallback={title()}>
-        <input type="email" name="email" ref={emailElement} placeholder={t('Fill email')} />
-        <button
-          class={clsx(styles.button, 'button--light')}
-          onClick={() => emailElement?.value && subscribe()}
-        >
-          {t('Subscribe')}
-        </button>
+        <div class={styles.controls}>
+          <input
+            type="email"
+            name="email"
+            value={email()}
+            onInput={handleInput}
+            class={styles.input}
+            placeholder={t('Fill email')}
+          />
+          <Button class={styles.button} type="submit" variant="secondary" value={t('Subscribe')} />
+        </div>
+        <Show when={emailError()}>
+          <div class={styles.error}>{emailError()}</div>
+        </Show>
       </Show>
-    </div>
+    </form>
   )
 }

src/components/Nav/AuthModal/ForgotPasswordForm.tsx

@@ -4,10 +4,10 @@ import { createSignal, JSX, Show } from 'solid-js'
 import { useRouter } from '../../../stores/router'
 import { email, setEmail } from './sharedLogic'
 import type { AuthModalSearchParams } from './types'
-import { isValidEmail } from './validators'
 import { ApiError } from '../../../utils/apiClient'
 import { signSendLink } from '../../../stores/auth'
 import { useLocalize } from '../../../context/localize'
+import { isValidEmail } from '../../../utils/validators'
 
 type FormFields = {
   email: string

src/components/Nav/AuthModal/LoginForm.tsx

@@ -3,13 +3,13 @@ import { clsx } from 'clsx'
 import { SocialProviders } from './SocialProviders'
 import { ApiError } from '../../../utils/apiClient'
 import { createSignal, Show } from 'solid-js'
-import { isValidEmail } from './validators'
 import { email, setEmail } from './sharedLogic'
 import { useRouter } from '../../../stores/router'
 import type { AuthModalSearchParams } from './types'
 import { hideModal } from '../../../stores/ui'
 import { useSession } from '../../../context/session'
 import { signSendLink } from '../../../stores/auth'
+import { isValidEmail } from '../../../utils/validators'
 
 import { useSnackbar } from '../../../context/snackbar'
 import { useLocalize } from '../../../context/localize'

src/components/Nav/AuthModal/RegisterForm.tsx

@@ -3,7 +3,6 @@ import type { JSX } from 'solid-js'
 import styles from './AuthModal.module.scss'
 import { clsx } from 'clsx'
 import { SocialProviders } from './SocialProviders'
-import { isValidEmail } from './validators'
 import { ApiError } from '../../../utils/apiClient'
 import { email, setEmail } from './sharedLogic'
 import { useRouter } from '../../../stores/router'
@@ -12,6 +11,7 @@ import { hideModal } from '../../../stores/ui'
 import { checkEmail, useEmailChecks } from '../../../stores/emailChecks'
 import { register } from '../../../stores/auth'
 import { useLocalize } from '../../../context/localize'
+import { isValidEmail } from '../../../utils/validators'
 
 type FormFields = {
   name: string

src/components/_shared/Button/Button.module.scss

@@ -20,15 +20,13 @@
   }
 
   &.secondary {
+    border: 1px solid #f7f7f7;
     background: #f7f7f7;
     color: #141414;
 
     &:hover {
-      background: #e8e8e8;
-    }
-
-    &:active {
-      background: #ccc;
+      background: #000;
+      color: #fff;
     }
   }
 

src/utils/validators.ts

@@ -3,5 +3,5 @@ export const isValidEmail = (email: string) => {
     return false
   }
 
-  return email.includes('@') && email.includes('.') && email.length > 5
+  return /^[\w%+.-]+@[\d.a-z-]+\.[a-z]{2,}$/i.test(email)
 }