#!/usr/bin/env node
var TransformOMatic = require('../lib/transform')
  , stdout = require('../lib/stdout')
  , fs = require('fs')
  , path = require('path')
  , util = require('../lib/util')
  ;

var filepath = path.join(path.dirname(__dirname), 'doc', 'cli.md')
  , usage = fs.readFileSync(filepath, 'utf8')
  ;

var argv = require('optimist')
  .options({
    s: {alias: 'share', boolean: true, describe: 'Generate a URL to share this.'},
    u: {alias: 'url', string: true, describe: 'URL of input data.'},
  })
  .usage(usage)
  .demand(1)
  .argv
;

// cli mode
var transformStr = argv._
  .join(' ')
  .replace(/(^(\/|\s)+|(\/|\s)+$)/g, '')
  .split('/')
  .map(function(item) {
    return item.trim(' ');
  })
  .join('/')
;

if (argv.share) {
  var transformUrl = 'http://datapipes.okfnlabs.org/';
  transformUrl += encodeURI(transformStr);
  transformUrl += '?url=';
  transformUrl += argv.url;
  var stars = Array(transformUrl.length+1).join('*');

  console.log('URL to share:');
  console.log(stars);
  console.log(transformUrl);
  console.log(stars);

  return;
}


var pipelineSpec = util.parseUrl(transformStr);
var transformers = TransformOMatic.pipeline(pipelineSpec);
TransformOMatic.transform(stdout(), transformers, argv.url);