// Bridge to the native ShareTargetPlugin (see
// android/app/src/main/java/chat/vojo/app/ShareTargetPlugin.java).
//
// On Android the native plugin captures ACTION_SEND / ACTION_SEND_MULTIPLE
// intents into the app cache. JS picks them up on boot via pickPendingShare()
// and reacts to warm shares via the `shareReceived` event.
//
// Web has no system share-sheet handoff, so the fallback is a no-op that
// always reports an empty slot.

import { Capacitor, registerPlugin, type PluginListenerHandle } from '@capacitor/core';
import { isAndroidPlatform } from '../utils/capacitor';

// Mirror of the JSObject the native plugin assembles.
export interface SharedFile {
  name: string;
  mimeType: string;
  size: number;
  // Absolute filesystem path inside the app cache. Wrap with
  // Capacitor.convertFileSrc() before fetch().
  path: string;
}

export type PendingShare =
  | { empty: true }
  | {
      empty: false;
      text?: string;
      subject?: string;
      items: SharedFile[];
    };

interface ShareTargetPluginIface {
  pickPendingShare(options?: { consume?: boolean }): Promise<PendingShare>;
  addListener(eventName: 'shareReceived', listener: () => void): Promise<PluginListenerHandle>;
}

const plugin = registerPlugin<ShareTargetPluginIface>('ShareTarget', {
  web: {
    pickPendingShare: async () => ({ empty: true } as PendingShare),
    addListener: async () => ({
      remove: async () => undefined,
    }),
  },
});

export const shareTarget = {
  async pickPendingShare(consume = true): Promise<PendingShare> {
    if (!isAndroidPlatform()) return { empty: true };
    try {
      return await plugin.pickPendingShare({ consume });
    } catch {
      // Old APK installed before the plugin shipped — be silent and treat
      // as "no pending share" so the rest of the app boots normally.
      return { empty: true };
    }
  },
  addShareReceivedListener(cb: () => void): Promise<PluginListenerHandle> {
    if (!isAndroidPlatform()) {
      return Promise.resolve({ remove: async () => undefined });
    }
    return plugin.addListener('shareReceived', cb);
  },
};

// Convert the cached absolute path into a URL fetchable inside the WebView
// (Capacitor wraps it as https://localhost/_capacitor_file_/…). Exposed here
// so the consumer doesn't have to import @capacitor/core directly.
export const sharedFilePathToUrl = (path: string): string => Capacitor.convertFileSrc(path);