we-plugin-acl/commands/acl_role_rm.js

Role-based access control (RBAC) for We.js framework

const fs = require('fs'),
  path = require('path');

module.exports = function aclRoleAdd (program) {

  program
  .command('acl:role:rm <roleName>')
  .description('Remove one role, this dont remove system roles')
  .action(function run (roleName) {
    let cJSON,
      cFGpath = path.join(process.cwd(), '/config/configuration.json');
    // get old configs
    try {
      cJSON = JSON.parse(fs.readFileSync(cFGpath));
    } catch(e) {
      if (e.code == 'ENOENT') {
        fs.writeFileSync(cFGpath, '{}');
        cJSON = {};
      } else {
        throw e;
      }
    }

    // set default vars
    if (!cJSON.roles) cJSON.roles = {};
    if (!cJSON.roles[roleName]) throw new Error('role '+roleName+' dont exists');

    // only remove if exists
    if (cJSON.roles[roleName].permissions) {
      delete cJSON.roles[roleName];
    }
    // save the file
    fs.writeFile(cFGpath, JSON.stringify(cJSON, null, 2), function (err) {
      if (err) throw err;
    });
  });
};