'use client'

import { useState, useEffect } from 'react'
import type { InvitePayload } from '../../hooks/useTeam'

interface Props {
  open: boolean
  onClose: () => void
  onInvite: (payload: InvitePayload) => Promise<void>
}

const ROLE_OPTIONS = [
  {
    value: 'MANAGER' as const,
    label: 'Manager',
    description: 'Full fleet ops — no billing or team settings',
    permissions: ['Vehicles', 'Reservations', 'CRM', 'Offers', 'Reports', 'License approval'],
  },
  {
    value: 'AGENT' as const,
    label: 'Agent',
    description: 'Day-to-day operations only',
    permissions: ['View fleet', 'Reservations', 'Check-in / Check-out', 'View customers'],
  },
]

export default function InviteModal({ open, onClose, onInvite }: Props) {
  const [firstName, setFirstName] = useState('')
  const [lastName, setLastName] = useState('')
  const [email, setEmail] = useState('')
  const [role, setRole] = useState<'MANAGER' | 'AGENT'>('AGENT')
  const [loading, setLoading] = useState(false)
  const [error, setError] = useState<string | null>(null)

  // Reset form when modal closes
  useEffect(() => {
    if (!open) {
      setTimeout(() => {
        setFirstName('')
        setLastName('')
        setEmail('')
        setRole('AGENT')
        setError(null)
      }, 200)
    }
  }, [open])

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault()
    setError(null)
    setLoading(true)

    try {
      await onInvite({ firstName: firstName.trim(), lastName: lastName.trim(), email: email.trim(), role })
      onClose()
    } catch (err: any) {
      setError(err.message ?? 'Failed to send invitation')
    } finally {
      setLoading(false)
    }
  }

  if (!open) return null

  return (
    <div
      className="fixed inset-0 z-50 flex items-center justify-center bg-black/30 backdrop-blur-sm"
      onClick={(e) => { if (e.target === e.currentTarget) onClose() }}
    >
      <div className="bg-white dark:bg-zinc-900 border border-zinc-200 dark:border-zinc-700 rounded-2xl shadow-xl w-full max-w-md mx-4 p-6">
        <div className="mb-5">
          <h2 className="text-lg font-medium text-zinc-900 dark:text-white">Invite a team member</h2>
          <p className="text-sm text-zinc-500 dark:text-zinc-400 mt-1">
            They'll receive an email invitation to join your dashboard
          </p>
        </div>

        <form onSubmit={handleSubmit} className="space-y-4">
          {/* Name row */}
          <div className="grid grid-cols-2 gap-3">
            <div>
              <label className="block text-xs font-medium text-zinc-500 dark:text-zinc-400 mb-1.5">
                First name
              </label>
              <input
                type="text"
                value={firstName}
                onChange={(e) => setFirstName(e.target.value)}
                placeholder="Youssef"
                required
                className="w-full px-3 py-2 text-sm border border-zinc-200 dark:border-zinc-700 rounded-lg bg-white dark:bg-zinc-800 text-zinc-900 dark:text-white placeholder:text-zinc-400 focus:outline-none focus:ring-2 focus:ring-zinc-900 dark:focus:ring-white focus:ring-offset-0 focus:border-transparent"
              />
            </div>
            <div>
              <label className="block text-xs font-medium text-zinc-500 dark:text-zinc-400 mb-1.5">
                Last name
              </label>
              <input
                type="text"
                value={lastName}
                onChange={(e) => setLastName(e.target.value)}
                placeholder="Benali"
                required
                className="w-full px-3 py-2 text-sm border border-zinc-200 dark:border-zinc-700 rounded-lg bg-white dark:bg-zinc-800 text-zinc-900 dark:text-white placeholder:text-zinc-400 focus:outline-none focus:ring-2 focus:ring-zinc-900 dark:focus:ring-white focus:border-transparent"
              />
            </div>
          </div>

          {/* Email */}
          <div>
            <label className="block text-xs font-medium text-zinc-500 dark:text-zinc-400 mb-1.5">
              Email address
            </label>
            <input
              type="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              placeholder="youssef@yourcompany.com"
              required
              className="w-full px-3 py-2 text-sm border border-zinc-200 dark:border-zinc-700 rounded-lg bg-white dark:bg-zinc-800 text-zinc-900 dark:text-white placeholder:text-zinc-400 focus:outline-none focus:ring-2 focus:ring-zinc-900 dark:focus:ring-white focus:border-transparent"
            />
          </div>

          {/* Role */}
          <div>
            <label className="block text-xs font-medium text-zinc-500 dark:text-zinc-400 mb-1.5">
              Role
            </label>
            <div className="grid grid-cols-2 gap-2">
              {ROLE_OPTIONS.map((option) => (
                <button
                  key={option.value}
                  type="button"
                  onClick={() => setRole(option.value)}
                  className={[
                    'text-left px-3 py-3 rounded-xl border transition-all',
                    role === option.value
                      ? 'border-zinc-900 dark:border-white bg-zinc-50 dark:bg-zinc-800'
                      : 'border-zinc-200 dark:border-zinc-700 hover:border-zinc-300 dark:hover:border-zinc-600',
                  ].join(' ')}
                >
                  <div className="flex items-center justify-between mb-1">
                    <span className="text-sm font-medium text-zinc-900 dark:text-white">
                      {option.label}
                    </span>
                    {role === option.value && (
                      <span className="w-4 h-4 rounded-full bg-zinc-900 dark:bg-white flex items-center justify-center">
                        <svg className="w-2.5 h-2.5 text-white dark:text-zinc-900" fill="currentColor" viewBox="0 0 12 12">
                          <path d="M10 3L5 8.5 2 5.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" fill="none" />
                        </svg>
                      </span>
                    )}
                  </div>
                  <p className="text-xs text-zinc-500 dark:text-zinc-400 leading-snug">
                    {option.description}
                  </p>
                  <div className="mt-2 flex flex-wrap gap-1">
                    {option.permissions.slice(0, 3).map((p) => (
                      <span
                        key={p}
                        className="text-[10px] px-1.5 py-0.5 rounded bg-zinc-100 dark:bg-zinc-700 text-zinc-500 dark:text-zinc-400"
                      >
                        {p}
                      </span>
                    ))}
                    {option.permissions.length > 3 && (
                      <span className="text-[10px] px-1.5 py-0.5 rounded bg-zinc-100 dark:bg-zinc-700 text-zinc-500 dark:text-zinc-400">
                        +{option.permissions.length - 3} more
                      </span>
                    )}
                  </div>
                </button>
              ))}
            </div>
          </div>

          {/* Error */}
          {error && (
            <div className="px-3 py-2.5 rounded-lg bg-red-50 dark:bg-red-950/30 border border-red-100 dark:border-red-900/50">
              <p className="text-sm text-red-600 dark:text-red-400">{error}</p>
            </div>
          )}

          {/* Footer */}
          <div className="flex gap-2 pt-2 border-t border-zinc-100 dark:border-zinc-800">
            <button
              type="button"
              onClick={onClose}
              className="flex-1 px-4 py-2 text-sm border border-zinc-200 dark:border-zinc-700 rounded-lg text-zinc-600 dark:text-zinc-400 hover:bg-zinc-50 dark:hover:bg-zinc-800 transition-colors"
            >
              Cancel
            </button>
            <button
              type="submit"
              disabled={loading}
              className="flex-1 px-4 py-2 text-sm bg-zinc-900 dark:bg-white text-white dark:text-zinc-900 rounded-lg font-medium hover:bg-zinc-800 dark:hover:bg-zinc-100 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
            >
              {loading ? 'Sending…' : 'Send invite →'}
            </button>
          </div>
        </form>
      </div>
    </div>
  )
}