module.exports = function(grunt) {
  'use strict';
  var pkg = grunt.file.readJSON('package.json');

  // Build artifact base name
  //<%= pkg.name %>-<%= pkg.version %>-<%= pkg.postfix %>-<%= pkg.releaseCandidate %>'
  var artifactname = pkg.name + '-' + pkg.version +
     (pkg.postfix.length > 0 ? "-" : "") + pkg.postfix +
     (pkg.releaseCandidate.length > 0 ? "-" : "") + pkg.releaseCandidate;

  var init = {
    pkg: pkg,
    banner: grunt.file.read('src/banner.txt'),
    artifactname : artifactname,

    browserify: { // convert code from nodejs style to browser style
      src: {
        files: { 'build/<%= artifactname %>.js': ['src/index.js'] },
        options: { // remove apache license headers before contatenating
          transform: ['./grunt-config/browserify_transforms/stripheader/stripheader.js'], 
        }
      }
    },
    uglify: { // uglify and minify the lib
      options: {
        sourceMap : true,
        sourceMapName : 'build/<%= artifactname %>.map',
        sourceMapIncludeSources : true,
      },
      build: {
        src: 'build/<%= artifactname %>.js',
        dest: 'build/<%= artifactname %>.min.js'
      }
    },
    concat : { // add the apache license headers
      options : {
        banner : '<%= banner %>'
      },
      licence: {
        src: 'build/<%= artifactname %>.js',
        dest: 'build/<%= artifactname %>.js',
      },
      licence_min: {
        src: 'build/<%= artifactname %>.min.js',
        dest: 'build/<%= artifactname %>.min.js',
      },
    },
    'copy': { // copy odatajs library files to demo folder withch contains samples
      forDemo: {
        files: [{ 
          expand: true, cwd: 'build/', filter: 'isFile',
          src: ['<%= artifactname %>*.*'], 
          dest: 'demo/scripts/' 
        }]
      }
    },
    'jsdoc' : { // generate documentation
        src : {
            src: ['src/**/*.js'], 
            options: { destination: 'build/doc-src', verbose : false }
        },
        test : {
            src: ['tests/**/*.js'], 
            options: { destination: 'build/doc-test', verbose : false }
        }
    },
    'npm-clean': {
      tmp: {
        src: [ "build/tmp"]
      },
      doc: {
        src: ["build/doc"],
          options: {
            force: true
          }
      },
      "doc-test": {
        src: ["build/doc-test"],
          options: {
              force: true
            }
      },
    },
    curl: {
      'license': {
        src: {
          url: 'http://apache.org/licenses/LICENSE-2.0.txt',
          proxy: 'http://proxy:8080'
        },
        dest: 'LICENSE'
      }
    } 
  };
  
  /*** Join local configuration for proxies and local test servers ***/
  if (grunt.file.exists('localgrunt.config')) {
    console.log("merge localgrunt.config");
    var localGrundConfig = grunt.file.read('localgrunt.config');
    init.connect['test-browser'].proxies = init.connect['test-browser'].proxies.concat(JSON.parse(localGrundConfig).proxies);
  }

  /*** Init ***/
  grunt.initConfig(init);

  /*** Load tasks from npm modules ***/
  grunt.loadNpmTasks('grunt-browserify');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks("grunt-contrib-copy");
  grunt.loadNpmTasks("grunt-contrib-concat");
  grunt.loadNpmTasks('grunt-contrib-compress');
  grunt.loadNpmTasks('grunt-curl');
  grunt.loadNpmTasks("grunt-jsdoc");

  //    Start Qunit tests direcly in node js, internally qunit (npm qunit) 
  //    is used, no phantomjs instance required
  //grunt.loadNpmTasks('grunt-node-qunit'); 
  //grunt.loadNpmTasks('grunt-contrib-clean');

  //    Load the custom-* tasks from the grunt-config directory
  grunt.loadTasks('grunt-config');

  //    rename some tasks to avoid name clashes with the user tasks
  grunt.renameTask('clean','npm-clean');
  
  grunt.registerTask('clearEnv', 'clear JAVA_TOOL_OPTIONS', function() {
    process.env['JAVA_TOOL_OPTIONS'] = ''; 
  });

  /*** E N D U S E R   T A S K S ***/

  grunt.registerTask('clean', ['npm-clean:doc','npm-clean:tmp']);

  //    Runs the license header check to verify the any source file contains a license header
  grunt.registerTask('license-check', ['custom-license-check']);

  //    Create documentation in /build/doc
  grunt.registerTask('doc', ['clearEnv', 'jsdoc:src']);
  grunt.registerTask('doc-test', ['clearEnv', 'jsdoc:test']);

  //    Build the odatajs library
  grunt.registerTask('build', ['browserify:src', 'uglify:build', 'concat','copy:forDemo']);


  grunt.registerTask('test-browser', ['configureProxies:test-browser', 'connect:test-browser']);
  grunt.registerTask('test-node', ['node-qunit:default-tests']);
  //grunt.registerTask('release', ['build','doc','compress']);
  grunt.registerTask('update-legal', ['curl:license']);

  
};