@themost/cli/commands/import.js

CLI Tool for MOST Web Framework

// MOST Web Framework Copyright (c) 2017-2022, THEMOST LP All rights reserved
const getConfiguration = require('../util').getConfiguration;
const getHttpApplication = require('../util').getHttpApplication;
const fs = require('fs-extra');
const path = require('path');


module.exports.command = 'import <file> [options]';

module.exports.desc = 'Import data';

const DateTimeRegex = /^\d{4}-([0]\d|1[0-2])-([0-2]\d|3[01])(?:[T ](\d+):(\d+)(?::(\d+)(?:\.(\d+))?)?)?(?:Z(-?\d*))?([+-](\d+):(\d+))?$/;

function reviveDates(key, value){
    if (typeof value === "string" && DateTimeRegex.test(value) ) {
        return new Date(value);
    }
    return value;
}

module.exports.builder = function builder(yargs) {
    return yargs.option('model', {
        describe:'the target model'
    }).option('dev', {
        default: false,
        boolean: true,
        describe: 'enables development mode'
    });
};

module.exports.handler = function handler(argv) {
    let options = getConfiguration();
    if (typeof argv.model === 'undefined' || argv.model === null) {
        console.error('ERROR','The target cannot be empty');
        process.exit(1);
    }
    if (argv.dev) {
        //set development mode
        process.env.NODE_ENV='development';
    }
    if (!fs.existsSync(argv.file)) {
        console.error('ERROR','Source data file cannot be found.');
        return process.exit(1);
    }
    //get data
    console.log('INFO','Getting source data');
    let data;
        return fs.readFile(path.resolve(process.cwd(),argv.file), 'utf8', (err, str)=> {
            if (err) {
                console.error('ERROR','An error occurred while trying to get source data.');
                console.error(err);
                return process.exit(1);
            }

            try {
                data = JSON.parse(str, reviveDates);
            }
            catch(err) {
                console.error('ERROR','An error occurred while converting source data.');
                console.error(err);
                return process.exit(1);
            }
            let app = getHttpApplication(options);
            app.unattended((context)=> {
                let model;
                console.log('INFO','Getting target model');
                try {
                    model = context.model(argv.model);
                    if (typeof model === 'undefined' || model === null) {
                        console.error('ERROR','Target model cannot be found');
                        return process.exit(1);
                    }
                }
                catch(err) {
                    console.error('ERROR','An error occurred while getting target model.');
                    console.error(err);
                    return process.exit(1);
                }
                model.save(data).then(()=> {
                    context.finalize(()=> {
                        console.log('INFO','The operation was completed successfully');
                        return process.exit(0);
                    });
                }).catch((err) => {
                    console.error('ERROR','An error occurred while importing data.');
                    console.error(err);
                    return process.exit(1);
                });
            });
        });
};