//
// First, using .execSync():
//

var _ = require('lodash');

var rendered;
try {
  rendered = require('machinepack-strings').template({
    templateStr: undefined,
    data: []
  }).execSync()
} catch (e) {
  console.log('Error!  (exit: `%s`', e.exit);

  // If you want to handle any other exits, do it here.
  // e.g.
  if (e.exit === 'missingData') { /* ... */ }
  else if (e.exit === 'couldNotRender') { /* ... */ }
  // Anything else comes through the catchall "error" exit
  // (including validation errors)
  else {

    // One or more of the provided input values
    // failed validation.
    if (e.code === 'E_MACHINE_RUNTIME_VALIDATION') {
      console.log('\n\n');
      console.log('%d validation errors:', e.errors.length);
      _.each(e.errors, function (subErr,i){
        console.log('-----------------------\nERROR #%d',i);
        console.log('\nInput name:', subErr.input);
        console.log('\nDefault error message:', subErr.message);
        console.log('\nMore advanced details (probably wont need these):', subErr.code, require('util').inspect(subErr.errors, {depth: null}));
        // console.log(_.keys(subErr));
        console.log();
      });
    }
    // If code is not `E_MACHINE_RUNTIME_VALIDATION`, this is an unexpected error from the machine implementation itself.
    else {
      // Handle it however you're handling other unexpected errors in your package or application:
      // ...
      throw e;
    }

  }
}



////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

//
// Same thing, but with .exec():
//

var _ = require('lodash');

require('machinepack-strings').template({
  templateStr: undefined,
  data: []
}).exec({
  error: function (err) {
    // Validation errors always come through as "error":
    console.log('Error!  (exit: `%s`', err.exit);

    // One or more of the provided input values
    // failed validation.
    if (err.code === 'E_MACHINE_RUNTIME_VALIDATION') {
      console.log('\n\n');
      console.log('%d validation errors:', err.errors.length);
      _.each(err.errors, function (subErr,i){
        console.log('-----------------------\nERROR #%d',i);
        console.log('\nInput name:', subErr.input);
        console.log('\nDefault error message:', subErr.message);
        console.log('\nMore advanced details (probably wont need these):', subErr.code, require('util').inspect(subErr.errors, {depth: null}));
        // console.log(_.keys(subErr));
        console.log();
        // ...
      });
    }
    // Otherwise, if this is not a validation error, handle it however you're handling other unexpected errors in your package or application:
    else {
      // ...
    }
  },
  //
  //
  // If you want to handle other exits, do it here; e.g.
  // missingData: function (info) { ... },
  // couldNotRender: function () { ... },
  //
  // Handle the success case where the template was rendered successfully
  success: function (rendered){
    // ...
  }
});