import { BrowserWindow, ipcMain } from 'electron';
import path from "path";


export function printUtils(data) {
    return new Promise(async (resolvePrint, rejectPrint) => {

        let subMainWindow = new BrowserWindow({
            show: false,
            webPreferences: {
                nodeIntegration: true,        // For electron >= 4.0.0
                contextIsolation: false,
                webSecurity: false,
                enableRemoteModule: true
            }
        });

        function renderPrintDocument(window, data) {
            return new Promise(async (resolve, reject) => {
                ipcMain.on('load-ok', (event, res) => {
                    //在这里可以添加打印的判断条件等......
                    setTimeout(() => {
                        resolve({ message: 'page-rendered', ...res });
                    }, 500)
                })
            })
        }


        // If the subMainWindow is closed, reset the `subMainWindow` var to null
        subMainWindow.on('closed', () => {
            subMainWindow = null;
        });
        // 加载打印的html文件
        subMainWindow.loadFile(path.resolve(__dirname, "./public/print.html"));

        subMainWindow.webContents.on('did-finish-load', async (res) => {
            let data = []
            return renderPrintDocument(subMainWindow, data)
                .then(async (result) => {
                    // let width = Math.ceil((result.width) * 264.5833);
                    let height = Math.ceil((result.height + 60) * 264.5833);
                    console.info('height', result, height);
                    subMainWindow.webContents.print({
                        silent: true,
                        margins: {
                            marginType: 'none'
                        },
                        printBackground: false,
                        deviceName: options.printerName,
                        copies: 1,
                    }, (success) => {

                        if (success) {
                            resolvePrint({ type: 'success' })
                        }
                        subMainWindow.close();
                    })
                })
                .catch(err => console.warn(33, err))
        })
    })
}