import { contextBridge, ipcRenderer } from 'electron';
import createDebug from 'debug';

const logger = createDebug('electron-ipc');

export const create = (
  name: string,
  sendWhitelist: string[] = [],
  receiveWhitelist: string[] = []
): any => {
  const sendWL = sendWhitelist || [];
  const recWL = receiveWhitelist || [];

  const api = {
    ipc: {
      name: name,
      whitelists: {
        send: sendWL,
        receive: recWL,
      },
      send: (channel: string, data: any) => {
        const chan = (channel || '').trim();

        if (!sendWL.includes(chan)) {
          console.error(
            `Renderer failed to send data.  The specified send channel [${chan}] is not whitelisted.`
          );
          return;
        }

        logger(
          `Renderer sending data [${data || 'null'}] on channel [${chan}]`,
          data
        );
        ipcRenderer.send(chan, data);
      },
      receive: (channel: string, fn: any) => {
        if (typeof fn !== 'function') {
          throw new Error(
            `Failed received data on the specified channel (${channel}).  The specified function paramter is not a function.`
          );
        }

        const chan = (channel || '').trim();

        if (!recWL.includes(chan)) {
          console.error(
            `Renderer failed to receive data.  The specified receive channel [${chan}] is not whitelisted.`
          );
          return;
        }

        ipcRenderer.on(chan, (event, ...args) => {
          logger(`Renderer receiving data on channel '${chan}'`, args);
          fn(event, ...args);
        });
      },
    },
  };

  contextBridge.exposeInMainWorld(name, api);
  logger(
    `An API bridge named '${name}' has been established between the main and render processes!`,
    api
  );

  return api;
};