const { contextBridge, ipcRenderer, shell } = require('electron');
const path = require('path');
const XLSX = require('xlsx');

// Because the main process is sandboxed, we need to use the contextBridge API to expose the API to the renderer process.
// https://www.electronjs.org/docs/latest/api/context-bridge
contextBridge.exposeInMainWorld('SheetJSDemoAPI', {
  openFile:  (filters) => ipcRenderer.invoke('dialog:openFile', filters),
  saveFile:  (filters) => ipcRenderer.invoke('dialog:saveFile', filters),
  message:   (msg)    => ipcRenderer.invoke('dialog:message',  msg),
  openExternal: (url) => shell.openExternal(url),
  // expose file-opened event
  onFileOpened: (cb) => ipcRenderer.on('file-opened', (_e, fp) => cb(fp)),
  // expose basename from path package
  basename: (p) => path.basename(p),
  // expose extname from path package
  extname: (p) => path.extname(p),
  // expose sheetjs package functions
  xlsx: XLSX,
});