/*jshint laxcomma:true */
module.exports = function(grunt) {
  grunt.initConfig({
    pkg: '<json:package.json>',
    themeMeta: '<json:themes.json>',
    meta: {
    // // set dynamically in generateThemeConfig()
    },
    lint: {
      files: ['assets/js/_*.js', 'grunt.js']
    },
    recess: {
      // set dynamically in generateThemeConfig()
    },
    concat: {
      // set dynamically in generateThemeConfig()
    },
    min: {
      // set dynamically in generateThemeConfig()
    },
    mincss: {
      // set dynamically in generateThemeConfig()
    },
    watch: {
      // set dynamically in generateThemeConfig()
    }
  });

  grunt.loadTasks('build/tasks');
  grunt.loadNpmTasks('grunt-contrib');
  grunt.loadNpmTasks('grunt-recess');

    function generateThemeConfig( registerThemeTask ) {
      var i
          , len
          , o
          , allTasksLen
          , msg
          , themeMetaObj = grunt.file.readJSON('themes.json')
          , pkgObject = grunt.file.readJSON('package.json')
          // tasks performed on all themes are declared in package.json
          , themeSpecificTasks = pkgObject.themeSpecificTasks;

      // iterate over the themeMetaObj for number of themes (default is declared here as well)
      for ( var key in themeMetaObj ) {
          var thisTheme = themeMetaObj[key]
              , taskArray = [];

            grunt.config( 'meta.'+thisTheme._name, {
              banner: '/*! ================================================\n' +
                      ' *  '+thisTheme._long_name+' Theme by example.co \n' +
                      ' *  v.<%= pkg.version %>\n' +
                      ' *  Copyright (c) <%= grunt.template.today("yyyy") %> ' +
                      ' example.Co */\n' +
                      ' *  ================================================ */'
            });

            grunt.config( 'recess.'+thisTheme._name+'Dev', {
              // set dynamically in generateThemeBundles()
                src: 'assets/css/less/'+thisTheme._name+'/master.less',
                dest: '../'+thisTheme._name+'/assets/css/main.css',
                options: {
                  compile: true
                }
            });

            grunt.config( 'recess.'+thisTheme._name+'Prod', {
              // set dynamically in generateThemeBundles()
                src: 'assets/css/less/'+thisTheme._name+'/master.less',
                dest: '../'+thisTheme._name+'/assets/css/main.min.css',
                options: {
                  compile: true,
                  compress: true
                }
            });

            grunt.config( 'concat.'+thisTheme._name, {
                src: thisTheme._js_includes,
                dest: '../'+thisTheme._name+'/assets/js/scripts.js'
            });
            grunt.config( 'min.'+thisTheme._name, {
                src: ['<'+thisTheme._name+'Banner>', 'assets/js/scripts.js'],
                dest: '../'+thisTheme._name+'/assets/js/scripts.min.js'
            });

      }
      registerThemeTask();
    }

    // grunt.log.writeln( grunt.log.writeflags( grunt.config.get(), prefix) );

    // register themes as a callback to ensure config is generated first
    generateThemeConfig( function() {

          var themeMetaObj = grunt.file.readJSON('themes.json')
          , pkgObject = grunt.file.readJSON('package.json')
          // tasks performed on all themes are declared in package.json
          // in attribute name `themeSpecificTasks`
          , themeSpecificTasks = pkgObject.themeSpecificTasks
          , allTaskArray = [];

          // iterate over the themeMetaObj for number of themes (default is declared here as well)
          for ( var key in themeMetaObj ) {
              var thisTheme = themeMetaObj[key]
                  , taskArray = [];

              // now that our config is setup, let's register this as a MultiTask
              taskArray = ['lint'];
              for ( var tasksKey in themeSpecificTasks ) {
                if ( themeSpecificTasks[tasksKey] === 'recess' ) {
                  taskArray.push( themeSpecificTasks[tasksKey]+':'+thisTheme._name+'Dev' );
                  taskArray.push( themeSpecificTasks[tasksKey]+':'+thisTheme._name+'Prod' );
                } else {
                  taskArray.push( themeSpecificTasks[tasksKey]+':'+thisTheme._name );
                }
              }
              taskArray.push( 'enqueue_ver' );
              allTaskArray = allTaskArray.concat( taskArray );

              grunt.registerTask( 'theme:'+thisTheme._name, taskArray);
          }

      grunt.registerTask( 'default', allTaskArray );

    });

};