import SEO from '@/components/SEO'
import { buildBreadcrumbLd } from '@/lib/seo'
import { useCallback, useEffect, useState } from 'react'
import { toast } from 'sonner'
import { Button } from '@/components/ui/Button'
import { Input } from '@/components/ui/Input'
import { Textarea } from '@/components/ui/Textarea'
import RecaptchaPlaceholder from '@/components/RecaptchaPlaceholder'
import { ArrowRight } from 'lucide-react'
import { submitLead } from '@/lib/api'

const isRecaptchaConfigured = Boolean(import.meta.env.VITE_RECAPTCHA_SITE_KEY)

const Contact = () => {
  const [formState, setFormState] = useState({
    'Last Name': '',
    Company: '',
    Email: '',
    Phone: '',
    'Zip Code': '',
    Description: '',
    company_website: '',
  })
  const [errors, setErrors] = useState({
    'Last Name': '',
    Company: '',
    Email: '',
    'Zip Code': '',
    Description: '',
    recaptcha_token: '',
  })
  const [debouncedErrors, setDebouncedErrors] = useState(errors)
  const [isSubmitting, setIsSubmitting] = useState(false)
  const [recaptchaToken, setRecaptchaToken] = useState('')
  const [recaptchaResetKey, setRecaptchaResetKey] = useState(0)

  useEffect(() => {
    const t = setTimeout(() => setDebouncedErrors(errors), 300)
    return () => clearTimeout(t)
  }, [errors])

  const validateForm = () => {
    const newErrors = { 'Last Name': '', Company: '', Email: '', 'Zip Code': '', Description: '', recaptcha_token: '' }
    if (!formState.Company.trim()) newErrors.Company = 'Company name is required'
    if (!formState['Last Name'].trim()) newErrors['Last Name'] = 'Name is required'
    if (!formState['Zip Code'].trim()) newErrors['Zip Code'] = 'ZIP code is required'
    if (!formState.Description.trim()) newErrors.Description = 'Message is required'
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
    if (!formState.Email.trim()) {
      newErrors.Email = 'Email is required'
    } else if (!emailRegex.test(formState.Email)) {
      newErrors.Email = 'Please enter a valid email address'
    }
    if (isRecaptchaConfigured && !recaptchaToken) {
      newErrors.recaptcha_token = 'Security verification is required'
    }
    const hasErrors = Object.values(newErrors).some(error => error !== '')
    setErrors(newErrors)
    if (hasErrors) {
      toast.error('Please fix the errors in the form')
      return false
    }
    return true
  }

  const resetForm = () => {
    setFormState({
      'Last Name': '',
      Company: '',
      Email: '',
      Phone: '',
      'Zip Code': '',
      Description: '',
      company_website: '',
    })
    setErrors({ 'Last Name': '', Company: '', Email: '', 'Zip Code': '', Description: '', recaptcha_token: '' })
    setRecaptchaToken('')
    setRecaptchaResetKey(prev => prev + 1)
  }

  const mapApiErrors = (fields = {}) => ({
    'Last Name': fields.name || '',
    Company: fields.company || '',
    Email: fields.email || '',
    'Zip Code': fields.zip || '',
    Description: fields.message || '',
    recaptcha_token: fields.recaptcha_token || '',
  })

  const handleSubmit = async (e) => {
    e.preventDefault()
    if (!validateForm()) return
    setIsSubmitting(true)

    try {
      const result = await submitLead({
        company: formState.Company,
        name: formState['Last Name'],
        email: formState.Email,
        phone: formState.Phone,
        zip: formState['Zip Code'],
        message: formState.Description,
        recaptcha_token: recaptchaToken,
        company_website: formState.company_website,
      })

      toast.success(result.message || "Thanks! We'll be in touch shortly.")
      resetForm()
    } catch (err) {
      if (err.fields) {
        setErrors(mapApiErrors(err.fields))
        if (err.fields.recaptcha_token) {
          setRecaptchaToken('')
          setRecaptchaResetKey(prev => prev + 1)
        }
      }
      toast.error(err.message || 'Failed to submit lead')
    } finally {
      setIsSubmitting(false)
    }
  }

  const handleChange = (e) => {
    const { name, value } = e.target
    setFormState(prev => ({ ...prev, [name]: value }))
    if (errors[name]) setErrors(prev => ({ ...prev, [name]: '' }))
  }

  const handleRecaptchaVerify = useCallback((token) => {
    setRecaptchaToken(token)
    setErrors(prev => ({ ...prev, recaptcha_token: '' }))
  }, [])

  const handleRecaptchaExpired = useCallback(() => {
    setRecaptchaToken('')
    setErrors(prev => ({ ...prev, recaptcha_token: 'Security verification expired. Please try again.' }))
  }, [])

  const contactDetails = [
    {
      label: 'Phone',
      icon: (
        <svg className="h-5 w-5 text-primary-cyan" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
          <path strokeLinecap="round" strokeLinejoin="round" d="M2.25 6.75c0 8.284 6.716 15 15 15h2.25a2.25 2.25 0 002.25-2.25v-1.372c0-.516-.351-.966-.852-1.091l-4.423-1.106c-.44-.11-.902.055-1.173.417l-.97 1.293c-.282.376-.769.542-1.21.38a12.035 12.035 0 01-7.143-7.143c-.162-.441.004-.928.38-1.21l1.293-.97c.363-.271.527-.734.417-1.173L6.963 3.102a1.125 1.125 0 00-1.091-.852H4.5A2.25 2.25 0 002.25 4.5v2.25z" />
        </svg>
      ),
      content: (
        <div>
          <a href="tel:+13217308020" className="block text-white hover:text-primary-cyan transition-colors">(321) 730-8020</a>
          <a href="tel:+18886562850" className="block text-white/70 text-sm hover:text-primary-cyan transition-colors mt-0.5">(888) 656-2850 Toll-Free</a>
        </div>
      ),
    },
    {
      label: 'Service Area',
      icon: (
        <svg className="h-5 w-5 text-primary-cyan" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
          <path strokeLinecap="round" strokeLinejoin="round" d="M12 21a9 9 0 100-18 9 9 0 000 18zm0 0c2.485 0 4.5-4.03 4.5-9S14.485 3 12 3 7.5 7.03 7.5 12s2.015 9 4.5 9zM3.6 9h16.8M3.6 15h16.8" />
        </svg>
      ),
      content: (
        <p className="text-white/80 text-sm leading-relaxed">
          Remote services nationwide. On-site services available based on project scope and location.
        </p>
      ),
    },
    {
      label: 'Hours',
      icon: (
        <svg className="h-5 w-5 text-primary-cyan" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
          <path strokeLinecap="round" strokeLinejoin="round" d="M12 6v6h4.5m4.5 0a9 9 0 11-18 0 9 9 0 0118 0z" />
        </svg>
      ),
      content: <p className="text-white/80 text-sm">Mon – Fri: 8:00 AM – 6:00 PM CT</p>,
    },
  ]

  const trustPoints = [
    <div key="8x8"><span className="font-numeric">8x8</span> Certified Partner with proven expertise</div>,
    'Cisco Certified Partner',
    <div key="veteran"><span className="font-numeric">25+</span> years of experience</div>,
    'SMB to Enterprise solutions',
    'No vendor bias — we recommend what fits',
  ]

  return (
    <>
      <SEO
        title="Contact Queue North | Schedule a Free Consultation"
        description="Schedule a free consultation with Queue North. Call (321) 730-8020 or (888) 656-2850 for business phone, UCaaS, IT support, and networking."
        url="https://queuenorth.com/contact"
        jsonLd={buildBreadcrumbLd([{ name: 'Contact', path: '/contact' }])}
      />

      {/* Hero */}
      <section className="relative isolate overflow-hidden bg-primary-navy py-16 lg:py-24">
        <div className="absolute inset-0 -z-10">
          <img
            src="/assets/hero-tech.webp"
            alt="Queue North communications infrastructure consultation"
            className="h-full w-full object-cover object-center"
            loading="eager"
            fetchPriority="high"
            decoding="async"
          />
          <div className="absolute inset-0 bg-primary-navy/82" />
          <div className="absolute inset-0 bg-gradient-to-r from-primary-navy via-primary-navy/92 to-primary-navy/45" />
        </div>
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="inline-flex items-center gap-2 rounded-md border border-white/20 bg-white/10 px-3 py-2 text-xs font-semibold uppercase tracking-wide text-primary-cyan mb-6">
            Contact
          </div>
          <h1 className="text-4xl md:text-5xl font-bold text-white mb-4">Let's Talk</h1>
          <p className="text-xl text-white/70 max-w-2xl">
            Tell us about your business and we'll cut through the noise to find what actually works for you.
          </p>
          <a
            href="#contact-form"
            className="mt-8 inline-flex h-11 items-center justify-center gap-2 rounded-md bg-white px-5 text-sm font-semibold text-primary-navy hover:bg-section-alt transition-colors"
          >
            Send a Message
            <ArrowRight className="h-4 w-4" aria-hidden="true" />
          </a>
        </div>
      </section>

      {/* Contact Body */}
      <section id="contact-form" className="bg-background py-16 lg:py-24">
        <div className="max-w-7xl mx-auto px-0 sm:px-6 lg:px-8">
          <div className="grid grid-cols-1 lg:grid-cols-5 rounded-none sm:rounded-md overflow-hidden shadow-none sm:shadow-xl border-y sm:border border-border">

            {/* Left: Info panel — order 2 on mobile so form appears first */}
            <div className="lg:col-span-2 order-2 lg:order-1 bg-primary-navy text-white p-8 lg:p-10 flex flex-col gap-10">
              <div className="space-y-7">
                {contactDetails.map((item) => (
                  <div key={item.label} className="flex items-start gap-4">
                    <div className="w-10 h-10 bg-white/10 rounded-md flex items-center justify-center flex-shrink-0">
                      {item.icon}
                    </div>
                    <div>
                      <p className="text-white/50 text-xs uppercase tracking-wider mb-1">{item.label}</p>
                      {item.content}
                    </div>
                  </div>
                ))}
              </div>

              <div className="border-t border-white/10" />

              <div>
                <p className="text-white/50 text-xs uppercase tracking-wider mb-5">Why Queue North Technologies</p>
                <ul className="space-y-4">
                  {trustPoints.map((point, i) => (
                    <li key={i} className="flex items-start gap-3 text-white/80 text-sm leading-relaxed">
                      <svg className="h-4 w-4 text-primary-cyan flex-shrink-0 mt-0.5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.5}>
                        <path strokeLinecap="round" strokeLinejoin="round" d="M4.5 12.75l6 6 9-13.5" />
                      </svg>
                      {point}
                    </li>
                  ))}
                </ul>
              </div>
            </div>

            {/* Right: Form panel — order 1 on mobile so it appears first */}
            <div className="lg:col-span-3 order-1 lg:order-2 bg-white p-6 sm:p-8 lg:p-10">
              <h2 className="text-2xl font-bold text-primary-navy mb-1">Send Us a Message</h2>
              <p className="text-soft-text text-sm mb-8">We typically respond within one business day.</p>

              <form
                id="contact-form"
                onSubmit={handleSubmit}
                noValidate
                className={`space-y-5 ${isSubmitting ? 'opacity-70 pointer-events-none' : ''}`}
              >
                {/* Honeypot */}
                <input
                  type="text"
                  name="company_website"
                  value={formState.company_website}
                  onChange={handleChange}
                  tabIndex={-1}
                  autoComplete="off"
                  aria-hidden="true"
                  style={{ display: 'none' }}
                />

                {/* Company */}
                <div>
                  <label htmlFor="Company" className="block text-sm font-medium text-text mb-1.5">
                    Company Name <span className="text-red-500">*</span>
                  </label>
                  <Input
                    type="text"
                    id="Company"
                    name="Company"
                    value={formState.Company}
                    onChange={handleChange}
                    required
                    placeholder="Your company name"
                    className={debouncedErrors.Company ? 'border-red-500 focus-visible:ring-red-500' : ''}
                  />
                  {debouncedErrors.Company && <p className="text-xs text-red-500 mt-1">{debouncedErrors.Company}</p>}
                </div>

                {/* Name + Email */}
                <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
                  <div>
                    <label htmlFor="Last_Name" className="block text-sm font-medium text-text mb-1.5">
                      Name <span className="text-red-500">*</span>
                    </label>
                    <Input
                      type="text"
                      id="Last_Name"
                      name="Last Name"
                      value={formState['Last Name']}
                      onChange={handleChange}
                      required
                      placeholder="Your full name"
                      className={debouncedErrors['Last Name'] ? 'border-red-500 focus-visible:ring-red-500' : ''}
                    />
                    {debouncedErrors['Last Name'] && <p className="text-xs text-red-500 mt-1">{debouncedErrors['Last Name']}</p>}
                  </div>
                  <div>
                    <label htmlFor="Email" className="block text-sm font-medium text-text mb-1.5">
                      Email <span className="text-red-500">*</span>
                    </label>
                    <Input
                      type="email"
                      id="Email"
                      name="Email"
                      value={formState.Email}
                      onChange={handleChange}
                      required
                      placeholder="you@company.com"
                      className={debouncedErrors.Email ? 'border-red-500 focus-visible:ring-red-500' : ''}
                    />
                    {debouncedErrors.Email && <p className="text-xs text-red-500 mt-1">{debouncedErrors.Email}</p>}
                  </div>
                </div>

                {/* Phone + ZIP */}
                <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
                  <div>
                    <label htmlFor="Phone" className="block text-sm font-medium text-text mb-1.5">
                      Phone <span className="text-soft-text font-normal">(optional)</span>
                    </label>
                    <Input
                      type="tel"
                      id="Phone"
                      name="Phone"
                      value={formState.Phone}
                      onChange={handleChange}
                      placeholder="(555) 123-4567"
                    />
                  </div>
                  <div>
                    <label htmlFor="Zip_Code" className="block text-sm font-medium text-text mb-1.5">
                      ZIP Code <span className="text-red-500">*</span>
                    </label>
                    <Input
                      type="text"
                      id="Zip_Code"
                      name="Zip Code"
                      value={formState['Zip Code']}
                      onChange={handleChange}
                      required
                      autoComplete="postal-code"
                      inputMode="numeric"
                      placeholder="12345"
                      className={debouncedErrors['Zip Code'] ? 'border-red-500 focus-visible:ring-red-500' : ''}
                    />
                    {debouncedErrors['Zip Code'] && <p className="text-xs text-red-500 mt-1">{debouncedErrors['Zip Code']}</p>}
                  </div>
                </div>

                {/* Message */}
                <div>
                  <label htmlFor="Description" className="block text-sm font-medium text-text mb-1.5">
                    Message <span className="text-red-500">*</span>
                  </label>
                  <Textarea
                    id="Description"
                    name="Description"
                    value={formState.Description}
                    onChange={handleChange}
                    required
                    placeholder="Tell us about your needs..."
                    className={`w-full rounded-md border bg-background px-3 py-2 text-sm ring-offset-[#F8FAFC] placeholder:text-muted focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-navy focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 ${debouncedErrors.Description ? 'border-red-500 focus-visible:ring-red-500' : ''}`}
                    rows={5}
                  />
                  {debouncedErrors.Description && <p className="text-xs text-red-500 mt-1">{debouncedErrors.Description}</p>}
                </div>

                <RecaptchaPlaceholder
                  error={debouncedErrors.recaptcha_token}
                  onVerify={handleRecaptchaVerify}
                  onExpired={handleRecaptchaExpired}
                  resetKey={recaptchaResetKey}
                />

                <Button type="submit" className="w-full h-11" disabled={isSubmitting}>
                  {isSubmitting ? (
                    <>
                      <svg className="animate-spin -ml-1 mr-2 h-4 w-4" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
                        <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                        <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
                      </svg>
                      Sending...
                    </>
                  ) : (
                    'Send Message'
                  )}
                </Button>
              </form>
            </div>
          </div>
        </div>
      </section>
    </>
  )
}

export default Contact
