import React from 'react'
import {
  type ExitState,
  useExitOnCtrlCDWithKeybindings,
} from '../hooks/useExitOnCtrlCD.js'
import { Box, Text } from '../index.js'
import { useKeybinding } from '../keybindings/useKeybinding.js'
import type { Theme } from './theme-types.js'
import { ConfigurableShortcutHint } from './ConfigurableShortcutHint.js'
import { Byline } from './Byline.js'
import { KeyboardShortcutHint } from './KeyboardShortcutHint.js'
import { Pane } from './Pane.js'

type DialogProps = {
  title: React.ReactNode
  subtitle?: React.ReactNode
  children: React.ReactNode
  onCancel: () => void
  color?: keyof Theme
  hideInputGuide?: boolean
  hideBorder?: boolean
  /** Custom input guide content. Receives exitState for Ctrl+C/D pending display. */
  inputGuide?: (exitState: ExitState) => React.ReactNode
  /**
   * Controls whether Dialog's built-in confirm:no (Esc/n) and app:exit/interrupt
   * (Ctrl-C/D) keybindings are active. Set to `false` while an embedded text
   * field is being edited so those keys reach the field instead of being
   * consumed by Dialog. TextInput has its own ctrl+c/d handlers (cancel on
   * press, delete-forward on ctrl+d with text). Defaults to `true`.
   */
  isCancelActive?: boolean
}

export function Dialog({
  title,
  subtitle,
  children,
  onCancel,
  color = 'permission',
  hideInputGuide,
  hideBorder,
  inputGuide,
  isCancelActive = true,
}: DialogProps): React.ReactNode {
  const exitState = useExitOnCtrlCDWithKeybindings(
    undefined,
    undefined,
    isCancelActive,
  )

  // Use configurable keybinding for ESC to cancel.
  // isCancelActive lets consumers (e.g. ElicitationDialog) disable this while
  // an embedded TextInput is focused, so that keys like 'n' reach the field
  // instead of being consumed here.
  useKeybinding('confirm:no', onCancel, {
    context: 'Confirmation',
    isActive: isCancelActive,
  })

  const defaultInputGuide = exitState.pending ? (
    <Text>Press {exitState.keyName} again to exit</Text>
  ) : (
    <Byline>
      <KeyboardShortcutHint shortcut="Enter" action="confirm" />
      <ConfigurableShortcutHint
        action="confirm:no"
        context="Confirmation"
        fallback="Esc"
        description="cancel"
      />
    </Byline>
  )

  const content = (
    <>
      <Box flexDirection="column" gap={1}>
        <Box flexDirection="column">
          <Text bold color={color}>
            {title}
          </Text>
          {subtitle && <Text dimColor>{subtitle}</Text>}
        </Box>
        {children}
      </Box>
      {!hideInputGuide && (
        <Box marginTop={1}>
          <Text dimColor italic>
            {inputGuide ? inputGuide(exitState) : defaultInputGuide}
          </Text>
        </Box>
      )}
    </>
  )

  if (hideBorder) {
    return content
  }

  return <Pane color={color}>{content}</Pane>
}