import { requireNativeModule, requireNativeViewManager } from 'expo-modules-core';
import type { ComponentType } from 'react';
import type { ViewProps } from 'react-native';
import type { FlashMode } from '../../src/types';

export interface UltraWideModule {
  /** Hidden back ultra-wide camera id ('' when this device has none). */
  availableAsync(): Promise<string>;
  /**
   * Still capture from the ultra-wide lens; resolves to an absolute file path.
   * `flashMode` is the viewfinder's setting, driven straight into the still
   * request's FLASH_MODE — the lens falls back to 'off' on its own when it has
   * no flash unit to fire.
   */
  captureAsync(flashMode: FlashMode): Promise<string>;
  /**
   * Tap-to-focus + spot metering on the ultra-wide lens, at a point in the
   * preview view (React Native dp, same space as a touch's locationX/Y). The
   * main CameraX session is stopped while 0.5x is live, so this is the only
   * focus path that exists in that mode.
   */
  focusAsync(x: number, y: number): Promise<void>;
  /** Back to whole-frame continuous AF/AE. */
  resetFocusAsync(): Promise<void>;
  /**
   * Hardware AE bias, in EV stops, for the live 0.5x preview. The 1x preview
   * gets its EV from the Skia matrix gain, but this feed is a bare Camera2
   * surface with no frame pipeline behind it, so the lens has to be biased.
   * Preview only: the still is captured without the bias, exactly like the 1x
   * path, so the export applies the software gain once and the file matches.
   */
  setEvAsync(ev: number): Promise<void>;
  /**
   * Closes the native session and resolves once the HAL has really released the
   * back camera slot. Leaving 0.5x must wait for this before switching the 1x
   * preview back on: the two back lenses cannot open at once, so an early 1x
   * open is refused and only retried ~520ms later.
   */
  closeAsync(): Promise<void>;
  /** Takes the ultra-wide again after a closeAsync whose handoff was cancelled. */
  reopenAsync(): Promise<void>;
}

export interface UltraWidePreviewProps extends ViewProps {
  /** Opens the camera while true, closes it on false/unmount. */
  active: boolean;
  /**
   * Draws this view while true, session or not. While the session is open the
   * first frame gates it (the previous session's last frame must not show), and
   * after it closes the texture holds its last frame — which is what lets the
   * caller keep the ultra-wide on screen until the main preview is live again.
   */
  cover: boolean;
}

export const UltraWidePreview = requireNativeViewManager<UltraWidePreviewProps>(
  'RecipesCamUltraWide',
  'UltraWidePreviewView'
) as ComponentType<UltraWidePreviewProps>;

export default requireNativeModule('RecipesCamUltraWide') as UltraWideModule;