'use client';

import React, { useState, useEffect, useRef } from 'react';
import { SupportTicketSummary } from './types';

interface SupportReportModalProps {
  isOpen: boolean;
  onClose: () => void;
  onSuccess: (ticket: SupportTicketSummary) => void;
}

export function SupportReportModal({ isOpen, onClose, onSuccess }: SupportReportModalProps) {
  const [ticketType, setTicketType] = useState('general');
  const [reporterEmail, setReporterEmail] = useState('');
  const [subject, setSubject] = useState('');
  const [description, setDescription] = useState('');
  const [severity, setSeverity] = useState('medium');
  
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [error, setError] = useState<string | null>(null);
  
  const modalRef = useRef<HTMLDivElement>(null);
  const firstInputRef = useRef<HTMLInputElement>(null);

  useEffect(() => {
    if (isOpen) {
      setTicketType('general');
      setReporterEmail('');
      setSubject('');
      setDescription('');
      setSeverity('medium');
      setError(null);
      
      // Focus first input after render
      setTimeout(() => firstInputRef.current?.focus(), 100);
    }
  }, [isOpen]);

  // Keyboard accessibility
  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
      if (!isOpen) return;
      if (e.key === 'Escape') {
        onClose();
      }
    };
    window.addEventListener('keydown', handleKeyDown);
    return () => window.removeEventListener('keydown', handleKeyDown);
  }, [isOpen, onClose]);

  if (!isOpen) return null;

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    if (isSubmitting) return;

    const trimmedEmail = reporterEmail.trim();
    const trimmedSubject = subject.trim();
    const trimmedDescription = description.trim();

    if (!trimmedSubject) {
      setError('Subject cannot be empty or contain only whitespace.');
      return;
    }
    if (!trimmedDescription) {
      setError('Description cannot be empty or contain only whitespace.');
      return;
    }

    setIsSubmitting(true);
    setError(null);
    try {
      const resp = await fetch('/api/ops/support/tickets', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          ticket_type: ticketType,
          reporter_email: trimmedEmail,
          subject: trimmedSubject,
          description: trimmedDescription,
          severity,
        })
      });

      const data = await resp.json().catch(() => null);
      if (resp.ok) {
        onSuccess(data);
        onClose();
      } else {
        setError(data?.detail || 'Failed to submit report');
      }
    } catch {
      setError('Network error during submission');
    } finally {
      setIsSubmitting(false);
    }
  };

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/60 backdrop-blur-sm animate-in fade-in duration-200" role="dialog" aria-modal="true" aria-labelledby="modal-title">
      <div 
        ref={modalRef}
        className="bg-surface-container-high border border-outline-variant/30 w-full max-w-lg rounded-2xl shadow-xl overflow-hidden flex flex-col"
      >
        <div className="px-6 py-4 border-b border-outline-variant/20 flex items-center justify-between">
          <h2 id="modal-title" className="text-lg font-bold text-on-surface">New Support Report</h2>
          <button 
            type="button" 
            onClick={onClose}
            className="p-1 rounded-full text-outline hover:bg-surface-container-highest hover:text-on-surface transition-colors"
            aria-label="Close"
          >
            <span className="material-symbols-outlined text-[20px]">close</span>
          </button>
        </div>
        
        <form onSubmit={handleSubmit} className="flex-1 overflow-y-auto p-6 space-y-4">
          {error && (
            <div className="p-3 text-sm bg-error/10 text-error border border-error/20 rounded-lg">
              {error}
            </div>
          )}

          <div className="space-y-1.5">
            <label htmlFor="reporter_email" className="block text-sm font-medium text-on-surface">Reporter Email</label>
            <input 
              id="reporter_email"
              ref={firstInputRef}
              type="email" 
              required 
              minLength={3}
              maxLength={255}
              value={reporterEmail} 
              onChange={e => setReporterEmail(e.target.value)} 
              className="w-full px-3 py-2 bg-surface-container-lowest border border-outline-variant/50 rounded-lg text-on-surface focus:outline-none focus:ring-2 focus:ring-primary/50" 
              placeholder="user@example.com"
            />
          </div>

          <div className="space-y-1.5">
            <label htmlFor="ticket_type" className="block text-sm font-medium text-on-surface">Ticket Type</label>
            <select
              id="ticket_type"
              value={ticketType}
              onChange={e => setTicketType(e.target.value)}
              className="w-full px-3 py-2 bg-surface-container-lowest border border-outline-variant/50 rounded-lg text-on-surface focus:outline-none focus:ring-2 focus:ring-primary/50"
            >
              <option value="general">General</option>
              <option value="bug_report">Bug Report</option>
              <option value="telemetry_issue">Telemetry Issue</option>
              <option value="contact_request">Contact Request</option>
            </select>
          </div>

          <div className="space-y-1.5">
            <label htmlFor="severity" className="block text-sm font-medium text-on-surface">Severity</label>
            <select
              id="severity"
              value={severity}
              onChange={e => setSeverity(e.target.value)}
              className="w-full px-3 py-2 bg-surface-container-lowest border border-outline-variant/50 rounded-lg text-on-surface focus:outline-none focus:ring-2 focus:ring-primary/50"
            >
              <option value="low">Low</option>
              <option value="medium">Medium</option>
              <option value="high">High</option>
              <option value="critical">Critical</option>
            </select>
          </div>

          <div className="space-y-1.5">
            <label htmlFor="subject" className="block text-sm font-medium text-on-surface">Subject</label>
            <input 
              id="subject"
              type="text" 
              required 
              minLength={1}
              maxLength={255}
              value={subject} 
              onChange={e => setSubject(e.target.value)} 
              className="w-full px-3 py-2 bg-surface-container-lowest border border-outline-variant/50 rounded-lg text-on-surface focus:outline-none focus:ring-2 focus:ring-primary/50" 
              placeholder="Brief summary"
            />
          </div>

          <div className="space-y-1.5">
            <label htmlFor="description" className="block text-sm font-medium text-on-surface">Description</label>
            <textarea 
              id="description"
              required 
              minLength={1}
              maxLength={10000}
              value={description} 
              onChange={e => setDescription(e.target.value)} 
              className="w-full px-3 py-2 bg-surface-container-lowest border border-outline-variant/50 rounded-lg text-on-surface focus:outline-none focus:ring-2 focus:ring-primary/50 min-h-[120px]" 
              placeholder="Detailed description..."
            />
          </div>

          <div className="pt-4 flex items-center justify-end gap-3 border-t border-outline-variant/20">
            <button 
              type="button" 
              onClick={onClose}
              disabled={isSubmitting}
              className="px-4 py-2 text-sm font-semibold text-on-surface-variant hover:text-on-surface transition-colors"
            >
              Cancel
            </button>
            <button 
              type="submit" 
              disabled={isSubmitting}
              className="px-5 py-2 text-sm font-semibold bg-primary text-on-primary rounded-xl hover:bg-primary/90 transition-colors shadow-sm disabled:opacity-50"
            >
              {isSubmitting ? 'Submitting...' : 'Create Ticket'}
            </button>
          </div>
        </form>
      </div>
    </div>
  );
}