import { useEffect, useRef } from 'react'

interface ConfirmModalProps {
  isOpen: boolean
  title: string
  message: string
  confirmText?: string
  cancelText?: string
  confirmStyle?: 'danger' | 'primary'
  onConfirm: () => void
  onCancel: () => void
}

export function ConfirmModal({
  isOpen,
  title,
  message,
  confirmText = 'Confirm',
  cancelText = 'Cancel',
  confirmStyle = 'danger',
  onConfirm,
  onCancel,
}: ConfirmModalProps) {
  const modalOverlayRef = useRef<HTMLDivElement>(null)
  const confirmButtonRef = useRef<HTMLButtonElement>(null)

  // A11Y: Handle Escape key to close modal
  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
      if (e.key === 'Escape' && isOpen) {
        onCancel()
      }
    }

    if (isOpen) {
      document.addEventListener('keydown', handleKeyDown)
      // Focus confirm button when modal opens
      confirmButtonRef.current?.focus()
    }

    return () => {
      document.removeEventListener('keydown', handleKeyDown)
    }
  }, [isOpen, onCancel])

  if (!isOpen) return null

  const handleOverlayClick = (e: React.MouseEvent) => {
    if (e.target === e.currentTarget) {
      onCancel()
    }
  }

  return (
    <div
      ref={modalOverlayRef}
      style={styles.overlay}
      onClick={handleOverlayClick}
      role="dialog"
      aria-modal="true"
      aria-labelledby="confirm-modal-title"
      aria-describedby="confirm-modal-message"
    >
      <div style={styles.modal}>
        <h2 id="confirm-modal-title" style={styles.title}>
          {title}
        </h2>
        <p id="confirm-modal-message" style={styles.message}>
          {message}
        </p>
        <div style={styles.actions}>
          <button onClick={onCancel} style={styles.cancelButton}>
            {cancelText}
          </button>
          <button
            ref={confirmButtonRef}
            onClick={onConfirm}
            style={{
              ...styles.confirmButton,
              ...(confirmStyle === 'danger' ? styles.dangerButton : styles.primaryButton),
            }}
          >
            {confirmText}
          </button>
        </div>
      </div>
    </div>
  )
}

const styles: Record<string, React.CSSProperties> = {
  overlay: {
    position: 'fixed',
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
    backgroundColor: 'rgba(0, 0, 0, 0.5)',
    display: 'flex',
    justifyContent: 'center',
    alignItems: 'center',
    zIndex: 1200,
  },
  modal: {
    backgroundColor: 'white',
    borderRadius: '8px',
    padding: '24px',
    width: '400px',
    maxWidth: '90%',
    boxShadow: '0 8px 32px rgba(0, 0, 0, 0.2)',
  },
  title: {
    margin: '0 0 12px 0',
    fontSize: '18px',
    fontWeight: 600,
    color: '#212529',
  },
  message: {
    margin: '0 0 24px 0',
    fontSize: '14px',
    color: '#495057',
    lineHeight: 1.5,
  },
  actions: {
    display: 'flex',
    justifyContent: 'flex-end',
    gap: '12px',
  },
  cancelButton: {
    padding: '10px 20px',
    backgroundColor: '#f8f9fa',
    color: '#495057',
    border: '1px solid #dee2e6',
    borderRadius: '6px',
    fontSize: '14px',
    cursor: 'pointer',
  },
  confirmButton: {
    padding: '10px 20px',
    color: 'white',
    border: 'none',
    borderRadius: '6px',
    fontSize: '14px',
    fontWeight: 500,
    cursor: 'pointer',
  },
  dangerButton: {
    backgroundColor: '#dc3545',
  },
  primaryButton: {
    backgroundColor: '#0066cc',
  },
}

export default ConfirmModal