import axios from 'axios';
import { Platform } from 'react-native';
import AppInfo from '../utils/AppInfo';
import type { EventToContinueEvent, RequestDownloadEvent } from '../messages/webMessages/unitComponentsMessages';
import { UnitComponentsSDK } from '../unitComponentsSdkManager/UnitComponentsSdkManager';
import WebView from 'react-native-webview';
import RNShareFile from '../nativeModulesHelpers/RNShareFile/RNShareFile';

export const getInfoParams = async () => {
  const appVersion = await AppInfo.getVersion();
  const appBuildNumber = await AppInfo.getBuildNumber();
  const appIdentifier = await AppInfo.getAppIdentifier();

  const infoParams: { [key: string]: string } = {};
  infoParams['sdkVersion'] = UnitComponentsSDK.getSdkVersion();
  infoParams['sdkPlatform'] = 'React Native';
  infoParams['os'] = Platform.OS == 'android' ? 'Android' : 'iOS';
  infoParams['hostedAppVersion'] = appVersion;
  infoParams['hostedAppBuildNumber'] = appBuildNumber;
  infoParams['hostedAppIdentifier'] = appIdentifier;
  return infoParams;
};

export interface DownloadResult {
  url: string;
  error?: string;
}

const SUPPORTED_DOWNLOAD_TYPES = ['application/pdf', 'text/csv'];

export const handleRequestDownload = async (details: RequestDownloadEvent): Promise<DownloadResult> => {
  if (!SUPPORTED_DOWNLOAD_TYPES.includes(details.fileType)) {
    return { url: details.url, error: `Unsupported file type: ${details.fileType}` };
  }

  try {
    const res = await axios.get(details.url, {
      headers: {
        'Accept': details.fileType,
        'Authorization': `Bearer ${details.accessToken}`
      },
      responseEncoding: 'base64',
      responseType: 'arraybuffer'
    });

    const base64Data = res.request._response;

    await RNShareFile.share(base64Data, details.fileName);

    return { url: details.url };
  } catch (error: any) {
    return { url: details.url, error: error?.message || 'Download failed' };
  }
};

export const injectEventToContinue = (currentWeb: WebView | null, eventToContinueEvent: EventToContinueEvent) => {
  currentWeb?.injectJavaScript(`dispatchEventToContinue('${JSON.stringify(eventToContinueEvent)}')`);
};