source: Dev/trunk/node_modules/grunt-tv4/tasks/tv4.js @ 487

/*
 * grunt-tv4
 * https://github.com/Bartvds/grunt-tv4
 *
 * Copyright (c) 2013 Bart van der Schoor
 * Licensed under the MIT license.
 */

'use strict';

var taskTv4 = require('tv4').freshApi();
var reporter = require('tv4-reporter');
var ministyle = require('ministyle');
var miniwrite = require('miniwrite');
var loader = require('../lib/loader');
var runnerModule = require('../lib/runner');

//var util = require('util');

module.exports = function (grunt) {

        var out = miniwrite.grunt(grunt);
        var style = ministyle.grunt();
        var report = reporter.getReporter(out, style);
        var runner = runnerModule.getRunner(taskTv4, loader.getLoaders(), out, style);

        grunt.registerMultiTask('tv4', 'Validate values against json-schema v4.', function () {
                var done = this.async();

                //import options
                var context = runner.getContext(this.options(runner.getOptions({
                        timeout: 5000
                })));
                var objects = [];

                if (context.options.fresh) {
                        context.tv4 = taskTv4.freshApi();
                }
                else {
                        context.tv4 = taskTv4;
                }

                grunt.util._.each(context.options.schemas, function (schema, uri) {
                        context.tv4.addSchema(uri, schema);
                });

                context.tv4.addFormat(context.options.formats);

                grunt.util._.each(context.options.languages, function (language, id) {
                        context.tv4.addLanguage(id, language);
                });
                if (context.options.language) {
                        context.tv4.language(context.options.language);
                }

                //flatten list for sanity
                grunt.util._.each(this.files, function (f) {
                        grunt.util._.some(f.src, function (filePath) {
                                if (!grunt.file.exists(filePath)) {
                                        grunt.log.warn('file "' + filePath + '" not found.');
                                        return true;
                                }
                                objects.push({
                                        path: filePath,
                                        label: filePath,
                                        root: context.options.root
                                });
                        });
                });

                // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

                var values = this.data.values;
                if (typeof values === 'function') {
                        values = values();
                }

                if (typeof values === 'object') {
                        var keyPrefix = (Array.isArray(values) ? 'value #' : '');
                        grunt.util._.some(values, function (value, key) {
                                objects.push({
                                        label: keyPrefix + key,
                                        value: value,
                                        root: context.options.root
                                });
                        });
                }
                // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

                if (context.options.add && Array.isArray(context.options.add)) {
                        grunt.util._.some(context.options.add, function (schema) {
                                if (typeof schema === 'string') {
                                        //juggle
                                        schema = grunt.file.readJSON(schema);
                                }
                                if (typeof schema.id === 'undefined') {
                                        grunt.log.warn('options.add: schema missing required id field (use options.schema to map it manually)');
                                        grunt.log.writeln();
                                        context.done(false);
                                        return true;
                                }
                                context.tv4.addSchema(schema.id, schema);
                        });
                }

                // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

                //grunt.verbose.writeln(util.inspect(context));

                context.validate(objects, function (err, job) {
                        if (err) {
                                throw err;
                        }
                        if (job) {
                                report.reportBulk(job.failed, job.passed);
                                if (!job.success) {
                                        grunt.log.writeln('');
                                }
                                done(job.success);
                        }
                        else {
                                done(false);
                        }
                });
        });
};