import type { Child } from 'hono/jsx'
import { define } from '@because/forge'
import { theme } from '../themes'

let modalTitle: string | null = null
let modalContent: (() => Child) | null = null
let renderFn: (() => void) | null = null

export const initModal = (render: () => void) => {
  renderFn = render
}

export const openModal = (title: string, content: () => Child) => {
  modalTitle = title
  modalContent = content
  renderFn?.()
  requestAnimationFrame(() => {
    document.querySelector<HTMLInputElement>('[data-modal-body] input')?.focus()
  })
}

export const closeModal = () => {
  modalTitle = null
  modalContent = null
  renderFn?.()
}

export const rerenderModal = () => {
  renderFn?.()
}

// ESC key handler
document.addEventListener('keydown', (e) => {
  if (e.key === 'Escape' && modalContent) {
    closeModal()
  }
})

const ModalBackdrop = define('ModalBackdrop', {
  position: 'fixed',
  inset: 0,
  background: 'rgba(0, 0, 0, 0.5)',
  display: 'flex',
  alignItems: 'center',
  justifyContent: 'center',
  zIndex: 1000,
})

const ModalBox = define('ModalBox', {
  background: theme('colors-bg'),
  borderRadius: theme('radius-md'),
  border: `1px solid ${theme('colors-border')}`,
  boxShadow: '0 4px 24px rgba(0, 0, 0, 0.2)',
  maxWidth: 500,
  width: '90%',
  maxHeight: '80vh',
  overflow: 'auto',
})

const ModalHeader = define('ModalHeader', {
  display: 'flex',
  alignItems: 'center',
  justifyContent: 'space-between',
  padding: '16px 20px',
  borderBottom: `1px solid ${theme('colors-border')}`,
})

const ModalTitle = define('ModalTitle', {
  fontSize: 16,
  fontWeight: 600,
  margin: 0,
})

const ModalCloseButton = define('ModalCloseButton', {
  base: 'button',
  background: 'none',
  border: 'none',
  cursor: 'pointer',
  padding: 4,
  fontSize: 18,
  color: theme('colors-textMuted'),
  lineHeight: 1,
  selectors: {
    '&:hover': { color: theme('colors-text') },
  },
})

const ModalBody = define('ModalBody', {
  padding: 20,
})

export const Modal = () => {
  if (!modalContent) return null

  return (
    <ModalBackdrop onClick={closeModal}>
      <ModalBox onClick={(e: MouseEvent) => e.stopPropagation()}>
        <ModalHeader>
          <ModalTitle>{modalTitle}</ModalTitle>
          <ModalCloseButton onClick={closeModal}>×</ModalCloseButton>
        </ModalHeader>
        <ModalBody data-modal-body>
          {modalContent()}
        </ModalBody>
      </ModalBox>
    </ModalBackdrop>
  )
}