odaseva-cli/scripts/postinstall.js

Odaseva CLI

#!/usr/bin/env node

/**
  Need to rename the platform specific executable to a generic odaseva executable.
  On windows, should odaseva.exe. Need to remove the 'odaseva' placeholder file.
  ON Linux/MacOS, need to set the permission.
*/

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

const PLATFORM_EXE_BASE_NAME = 'oda_cli';
const TARGET_EXE_BASE_NAME = 'odaseva';

console.log("Pre-Installing odaseva-cli");

var platform = process.platform;
var arch = process.arch;

console.log("platform:" + platform + " - arch:" + arch);
var platformExeName = PLATFORM_EXE_BASE_NAME + "_" + platform + '_' + arch;
var targetExeName = TARGET_EXE_BASE_NAME;

if (platform == 'win32') {
  platformExeName += '.exe';
  targetExeName += '.exe';
}

var exePath = path.join( __dirname, '..', 'bin'); 
var fullPlaceholderPath = path.join(exePath, TARGET_EXE_BASE_NAME);
var fullPlatformExePath = path.join(exePath, platformExeName);
var fullTargetExePath = path.join(exePath, targetExeName);

// Check source// should check file is executable...
if (!fs.existsSync(fullPlatformExePath)) {
  var err = fullPlatformExePath + ' is not a valid file. ' + platformExeName + ' cannot be found.';
  console.log(err);
  return new Error(err);
}

// Remove placeholder
if (fs.existsSync(fullPlaceholderPath)) {
  console.log('Removing placeholder file '+ fullPlaceholderPath);
  fs.unlink(fullPlaceholderPath, function(err) {
    if(err) {
      console.log(err);
  	  return new Error(err);
    }
    console.log('File deleted successfully');
  }); 
}

// Copy
console.log("Copying " + fullPlatformExePath + " to " + fullTargetExePath);
fs.copyFileSync(fullPlatformExePath, fullTargetExePath);

// should check file is executable...
if (!fs.existsSync(fullTargetExePath)) {
  var err = "Copy failed.";
  console.log(err);
  return new Error(err);
}
else if (platform != 'win32') {
  console.log('Setting exec permissions on '+ fullTargetExePath);
  fs.chmodSync(fullTargetExePath, '755');
}

console.log("Done pre-installing odaseva-cli");