import { useState, type FormEvent } from 'react';
import { motion } from 'motion/react';
import emailjs from '@emailjs/browser';
import { useTranslation } from '../i18n';
import { config } from '../config';
import { Button, Input, Textarea } from '../components/ui';
import styles from './Contact.module.css';

interface FormData {
  name: string;
  email: string;
  subject: string;
  message: string;
}

interface FormErrors {
  name?: string;
  email?: string;
  subject?: string;
  message?: string;
}

export function Contact() {
  const { t } = useTranslation();
  const [formData, setFormData] = useState<FormData>({
    name: '',
    email: '',
    subject: '',
    message: '',
  });
  const [errors, setErrors] = useState<FormErrors>({});
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [submitStatus, setSubmitStatus] = useState<'idle' | 'success' | 'error'>('idle');

  const validateForm = (): boolean => {
    const newErrors: FormErrors = {};

    if (!formData.name.trim()) {
      newErrors.name = 'Required';
    }

    if (!formData.email.trim()) {
      newErrors.email = 'Required';
    } else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(formData.email)) {
      newErrors.email = 'Invalid email';
    }

    if (!formData.subject.trim()) {
      newErrors.subject = 'Required';
    }

    if (!formData.message.trim()) {
      newErrors.message = 'Required';
    }

    setErrors(newErrors);
    return Object.keys(newErrors).length === 0;
  };

  const handleSubmit = async (e: FormEvent) => {
    e.preventDefault();

    if (!validateForm()) return;

    setIsSubmitting(true);
    setSubmitStatus('idle');

    try {
      const templateParams = {
        name: formData.name,
        email: formData.email,
        title: formData.subject,
        message: formData.message,
      };

      await Promise.all([
        // Send to Admin
        emailjs.send(
          config.emailJs.serviceId,
          config.emailJs.templateIdAdmin,
          templateParams,
          { publicKey: config.emailJs.publicKey }
        ),
        // Send Auto-reply to User
        emailjs.send(
          config.emailJs.serviceId,
          config.emailJs.templateIdUser,
          templateParams,
          { publicKey: config.emailJs.publicKey }
        ),
      ]);

      setSubmitStatus('success');
      setFormData({ name: '', email: '', subject: '', message: '' });
    } catch {
      setSubmitStatus('error');
    } finally {
      setIsSubmitting(false);
    }
  };

  const handleChange = (field: keyof FormData, value: string) => {
    setFormData((prev) => ({ ...prev, [field]: value }));
    if (errors[field]) {
      setErrors((prev) => ({ ...prev, [field]: undefined }));
    }
  };

  return (
    <main className={styles.contact}>
      {/* Hero */}
      <section className={styles.hero}>
        <div className="container">
          <motion.div
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.6 }}
          >
            <h1 className={styles.title}>{t.contact.title}</h1>
            <p className={styles.subtitle}>{t.contact.subtitle}</p>
          </motion.div>
        </div>
      </section>

      {/* Content */}
      <section className={styles.content}>
        <div className="container">
          <div className={styles.grid}>
            {/* Form */}
            <motion.div
              className={styles.formSection}
              initial={{ opacity: 0, x: -30 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ duration: 0.5, delay: 0.2 }}
            >
              <p className={styles.intro}>{t.contact.intro}</p>

              <form onSubmit={handleSubmit} className={styles.form}>
                <Input
                  label={t.contact.form.name}
                  placeholder={t.contact.form.namePlaceholder}
                  value={formData.name}
                  onChange={(e) => handleChange('name', e.target.value)}
                  error={errors.name}
                />

                <Input
                  label={t.contact.form.email}
                  type="email"
                  placeholder={t.contact.form.emailPlaceholder}
                  value={formData.email}
                  onChange={(e) => handleChange('email', e.target.value)}
                  error={errors.email}
                />

                <Input
                  label={t.contact.form.subject}
                  placeholder={t.contact.form.subjectPlaceholder}
                  value={formData.subject}
                  onChange={(e) => handleChange('subject', e.target.value)}
                  error={errors.subject}
                />

                <Textarea
                  label={t.contact.form.message}
                  placeholder={t.contact.form.messagePlaceholder}
                  value={formData.message}
                  onChange={(e) => handleChange('message', e.target.value)}
                  error={errors.message}
                  rows={6}
                />

                <Button
                  type="submit"
                  variant="primary"
                  size="lg"
                  isLoading={isSubmitting}
                  disabled={isSubmitting}
                >
                  {isSubmitting ? t.contact.form.sending : t.contact.form.submit}
                </Button>

                {submitStatus === 'success' && (
                  <motion.p
                    className={styles.success}
                    initial={{ opacity: 0, y: 10 }}
                    animate={{ opacity: 1, y: 0 }}
                  >
                    {t.contact.form.success}
                  </motion.p>
                )}

                {submitStatus === 'error' && (
                  <motion.p
                    className={styles.error}
                    initial={{ opacity: 0, y: 10 }}
                    animate={{ opacity: 1, y: 0 }}
                  >
                    {t.contact.form.error}
                  </motion.p>
                )}
              </form>
            </motion.div>

            {/* Info */}
            <motion.div
              className={styles.infoSection}
              initial={{ opacity: 0, x: 30 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ duration: 0.5, delay: 0.3 }}
            >
              <h2 className={styles.infoTitle}>{t.contact.info.title}</h2>

              <div className={styles.infoList}>
                <div className={styles.infoItem}>
                  <div className={styles.infoIcon}>
                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
                      <path d="M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z" />
                      <polyline points="22,6 12,13 2,6" />
                    </svg>
                  </div>
                  <div>
                    <h3>{t.contact.info.email}</h3>
                    <a href="mailto:info@ragusa-it.dev">info@ragusa-it.dev</a>
                  </div>
                </div>

                <div className={styles.infoItem}>
                  <div className={styles.infoIcon}>
                    <svg viewBox="0 0 24 24" fill="currentColor">
                      <path d="M12 0C5.37 0 0 5.37 0 12c0 5.31 3.435 9.795 8.205 11.385.6.105.825-.255.825-.57 0-.285-.015-1.23-.015-2.235-3.015.555-3.795-.735-4.035-1.41-.135-.345-.72-1.41-1.23-1.695-.42-.225-1.02-.78-.015-.795.945-.015 1.62.87 1.845 1.23 1.08 1.815 2.805 1.305 3.495.99.105-.78.42-1.305.765-1.605-2.67-.3-5.46-1.335-5.46-5.925 0-1.305.465-2.385 1.23-3.225-.12-.3-.54-1.53.12-3.18 0 0 1.005-.315 3.3 1.23.96-.27 1.98-.405 3-.405s2.04.135 3 .405c2.295-1.56 3.3-1.23 3.3-1.23.66 1.65.24 2.88.12 3.18.765.84 1.23 1.905 1.23 3.225 0 4.605-2.805 5.625-5.475 5.925.435.375.81 1.095.81 2.22 0 1.605-.015 2.895-.015 3.3 0 .315.225.69.825.57A12.02 12.02 0 0024 12c0-6.63-5.37-12-12-12z" />
                    </svg>
                  </div>
                  <div>
                    <h3>{t.contact.info.github}</h3>
                    <a
                      href="https://github.com/ragusa-it"
                      target="_blank"
                      rel="noopener noreferrer"
                    >
                      github.com/ragusa-it
                    </a>
                  </div>
                </div>
              </div>
            </motion.div>
          </div>
        </div>
      </section>
    </main>
  );
}