feat: Enterprise contact form

.env.example

@@ -48,3 +48,8 @@ ANALYZE=false
 # Use mock data for development. Set to "false" to use live data but you must have the
 # environment variables set to make api requests
 USE_MOCK_DATA=true
+
+# AWS SES Configuration for Enterprise Contact Form
+# SES_ACCESS_KEY_ID=your_iam_access_key_id
+# SES_SECRET_ACCESS_KEY=your_iam_secret_access_key  
+# SES_REGION=us-east-2

app/[locale]/enterprise/_components/ContactForm/index.tsx

@@ -0,0 +1,295 @@
+"use client"
+
+import React, { useState } from "react"
+import { HeartHandshake, TriangleAlert } from "lucide-react"
+
+import { Button } from "@/components/ui/buttons/Button"
+import Input from "@/components/ui/input"
+import { Spinner } from "@/components/ui/spinner"
+import { Textarea } from "@/components/ui/textarea"
+
+import { cn } from "@/lib/utils/cn"
+import { sanitizeInput } from "@/lib/utils/sanitize"
+
+import { MAX_EMAIL_LENGTH, MAX_MESSAGE_LENGTH } from "../../constants"
+
+type EnterpriseContactFormProps = {
+  strings: {
+    error: {
+      domain: React.ReactNode // Link injected
+      emailInvalid: string
+      emailTooLong: string
+      general: React.ReactNode // Link injected
+      messageTooLong: string
+      required: string
+    }
+    placeholder: {
+      input: string
+      textarea: string
+    }
+    button: {
+      label: string
+      loading: string
+    }
+    success: {
+      heading: string
+      message: string
+    }
+  }
+}
+
+type FormState = {
+  email: string
+  message: string
+}
+
+type FormErrors = {
+  email?: React.ReactNode
+  message?: React.ReactNode
+  general?: React.ReactNode
+}
+
+type SubmissionState = "idle" | "submitting" | "success" | "error"
+
+// Consumer email domains to block
+const CONSUMER_DOMAINS = [
+  "gmail.com",
+  "yahoo.com",
+  "hotmail.com",
+  "outlook.com",
+  "icloud.com",
+  "protonmail.com",
+  "proton.me",
+  "pm.me",
+  "aol.com",
+  "mail.com",
+  "yandex.com",
+  "tutanota.com",
+  "fastmail.com",
+  "zoho.com",
+  "gmx.com",
+  "live.com",
+  "msn.com",
+  "me.com",
+  "mac.com",
+  "rocketmail.com",
+  "yahoo.co.uk",
+  "googlemail.com",
+  "mailinator.com",
+  "10minutemail.com",
+  "guerrillamail.com",
+]
+
+const EnterpriseContactForm = ({ strings }: EnterpriseContactFormProps) => {
+  const getCharacterCountClasses = (currentLength: number, maxLength: number) =>
+    cn(
+      currentLength >= Math.floor(maxLength * 0.9) && "flex", // Show char count when within 10% remaining to limit
+      currentLength > maxLength - 64 && "text-warning-border", // Warning color within 64 chars (border version for proper contrast ratio),
+      currentLength > maxLength && "text-error [&_svg]:inline" // Error color over limit
+    )
+
+  const [formData, setFormData] = useState<FormState>({
+    email: "",
+    message: "",
+  })
+  const [errors, setErrors] = useState<FormErrors>({})
+  const [submissionState, setSubmissionState] =
+    useState<SubmissionState>("idle")
+
+  const handleInputChange =
+    (field: keyof FormState) =>
+    (e: React.ChangeEvent<HTMLInputElement | HTMLTextAreaElement>) => {
+      const value = e.target.value
+      setFormData((prev) => ({ ...prev, [field]: value }))
+
+      // Clear error when user starts typing
+      if (errors[field]) {
+        setErrors((prev) => ({ ...prev, [field]: undefined }))
+      }
+    }
+
+  const handleBlur =
+    (field: keyof FormState) =>
+    (e: React.FocusEvent<HTMLInputElement | HTMLTextAreaElement>) => {
+      const value = e.target.value
+
+      if (field === "email") {
+        const emailError = validateEmail(value)
+        if (emailError) setErrors((prev) => ({ ...prev, email: emailError }))
+        return
+      }
+      if (field === "message") {
+        const messageError = validateMessage(value)
+        if (messageError)
+          setErrors((prev) => ({ ...prev, message: messageError }))
+        return
+      }
+    }
+
+  const validateEmail = (email: string): React.ReactNode | undefined => {
+    const sanitized = sanitizeInput(email)
+
+    if (!sanitized) return strings.error.required
+
+    if (sanitized.length > MAX_EMAIL_LENGTH) return strings.error.emailTooLong
+
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
+    if (!emailRegex.test(sanitized)) return strings.error.emailInvalid
+
+    const domain = sanitized.toLowerCase().split("@")[1]
+    if (CONSUMER_DOMAINS.includes(domain)) return strings.error.domain
+
+    return undefined
+  }
+
+  const validateMessage = (
+    message: string
+  ): React.ReactNode | string | undefined => {
+    const sanitized = sanitizeInput(message)
+
+    if (!sanitized) return strings.error.required
+
+    if (sanitized.length > MAX_MESSAGE_LENGTH)
+      return strings.error.messageTooLong
+
+    return undefined
+  }
+
+  const validateForm = (): boolean => {
+    const newErrors: FormErrors = {}
+
+    const emailError = validateEmail(formData.email)
+    if (emailError) newErrors.email = emailError
+
+    const messageError = validateMessage(formData.message)
+    if (messageError) newErrors.message = messageError
+
+    setErrors(newErrors)
+    return Object.keys(newErrors).length === 0
+  }
+
+  const handleSubmit = async () => {
+    if (!validateForm()) return
+
+    setSubmissionState("submitting")
+    setErrors({})
+
+    try {
+      const sanitizedData = {
+        email: sanitizeInput(formData.email),
+        message: sanitizeInput(formData.message),
+      }
+
+      const response = await fetch("/api/enterprise-contact", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify(sanitizedData),
+      })
+
+      if (!response.ok) throw new Error(`Server error: ${response.status}`)
+
+      setSubmissionState("success")
+    } catch (error) {
+      console.error("Form submission error:", error)
+      setSubmissionState("error")
+      setErrors({ general: strings.error.general })
+    }
+  }
+
+  if (submissionState === "success")
+    return (
+      <div className="flex w-full max-w-prose flex-col items-center gap-y-6 rounded-2xl border border-accent-a/20 bg-background p-6 text-center">
+        <div className="mb-2 flex items-center gap-4">
+          <HeartHandshake className="size-8 text-primary" />
+          <h3 className="text-2xl font-semibold">{strings.success.heading}</h3>
+        </div>
+        <p className="text-body-medium">{strings.success.message}</p>
+      </div>
+    )
+
+  return (
+    <div className="w-full max-w-[440px] space-y-6">
+      <div className="space-y-2">
+        <Input
+          type="email"
+          className="w-full"
+          placeholder={strings.placeholder.input}
+          value={formData.email}
+          onChange={handleInputChange("email")}
+          onBlur={handleBlur("email")}
+          hasError={!!errors.email}
+          disabled={submissionState === "submitting"}
+        />
+        {errors.email && (
+          <p className="text-sm text-error" role="alert">
+            {errors.email}
+          </p>
+        )}
+      </div>
+
+      <div className="space-y-2">
+        <div className="relative">
+          <Textarea
+            placeholder={strings.placeholder.textarea}
+            value={formData.message}
+            onChange={handleInputChange("message")}
+            onBlur={handleBlur("message")}
+            hasError={!!errors.message}
+            disabled={submissionState === "submitting"}
+            className="min-h-[120px]"
+          />
+          <div
+            className={cn(
+              "absolute bottom-1 end-3 hidden items-center rounded bg-background px-1 py-0.5 text-xs shadow",
+              getCharacterCountClasses(
+                formData.message.length,
+                MAX_MESSAGE_LENGTH
+              )
+            )}
+          >
+            <TriangleAlert className="mb-px me-1 hidden size-3" />
+            {formData.message.length}/{MAX_MESSAGE_LENGTH}
+          </div>
+        </div>
+        {errors.message && (
+          <p className="text-sm text-error" role="alert">
+            {errors.message}
+          </p>
+        )}
+      </div>
+
+      {errors.general && (
+        <div className="rounded-lg bg-error-light p-4">
+          <p className="text-sm text-error" role="alert">
+            {errors.general}
+          </p>
+        </div>
+      )}
+
+      <Button
+        onClick={handleSubmit}
+        size="lg"
+        disabled={submissionState === "submitting"}
+        customEventOptions={{
+          eventCategory: "enterprise",
+          eventAction: "CTA",
+          eventName: "bottom_mail",
+        }}
+        className="flex items-center justify-center gap-2 max-sm:w-full"
+      >
+        {submissionState === "submitting" ? (
+          <>
+            <Spinner className="text-lg" />
+            {strings.button.loading}
+          </>
+        ) : (
+          strings.button.label
+        )}
+      </Button>
+    </div>
+  )
+}
+
+export default EnterpriseContactForm

app/[locale]/enterprise/_components/ContactForm/lazy.tsx

@@ -0,0 +1,5 @@
+import dynamic from "next/dynamic"
+
+import Loading from "./loading"
+
+export default dynamic(() => import("."), { ssr: false, loading: Loading })

app/[locale]/enterprise/_components/ContactForm/loading.tsx

@@ -0,0 +1,10 @@
+import { Skeleton } from "@/components/ui/skeleton"
+
+const Loading = () => (
+  <div className="w-full max-w-[440px] space-y-6">
+    <Skeleton className="h-[42px] w-full" />
+    <Skeleton className="h-[200px] w-full" />
+  </div>
+)
+
+export default Loading

app/[locale]/enterprise/constants.ts

@@ -1,3 +1,4 @@
-// TODO: Confirm
-export const ENTERPRISE_MAILTO =
-  "mailto:enterprise@ethereum.org?subject=Enterprise%20inquiry"
+export const ENTERPRISE_EMAIL = "enterprise@ethereum.org"
+export const ENTERPRISE_MAILTO = `mailto:${ENTERPRISE_EMAIL}?subject=Enterprise%20inquiry`
+export const MAX_EMAIL_LENGTH = 2 ** 6 // 64
+export const MAX_MESSAGE_LENGTH = 2 ** 12 // 4,096