'use strict';

module.exports = function (grunt) {


    grunt.option('stack', true)

    // Report the elapsed execution time of tasks.
    require('time-grunt')(grunt);

    var COMPRESS_FOR_TESTS = false;
    var git = require('git-rev');

   // Sauce Labs browser
    var browsers = [
        // Desktop browsers
        {
            browserName: 'chrome',
            version: 'latest',
            platform: 'Windows 7'
        },
        {
            browserName: 'firefox',
            version: 'latest',
            platform: 'Linux'
        },
        {
            browserName: 'safari',
            version: '9',
            platform: 'OS X 10.11'
        },
        {
            browserName: 'internet explorer',
            version: '8',
            platform: 'Windows XP'
        },
        {
            browserName: 'internet explorer',
            version: '11',
            platform: 'Windows 8.1'
        },
        {
            browserName: 'edge',
            version: '13',
            platform: 'Windows 10'
        },
        // Mobile browsers
        {
            browserName: 'ipad',
            deviceName: 'iPad Air Simulator',
            deviceOrientation: 'portrait',
            version: '8.4',
            platform: 'OS X 10.9'
        },
        {
            browserName: 'iphone',
            deviceName: 'iPhone 5 Simulator',
            deviceOrientation: 'portrait',
            version: '9.3',
            platform: 'OS X 10.11'
        },
        {
            browserName: 'android',
            deviceName: 'Google Nexus 7 HD Emulator',
            deviceOrientation: 'portrait',
            version: '4.4',
            platform: 'Linux'
        }
    ];

    var sauceJobs = {};


    var browserTests = [
        'filemanager-plugin',
        'visitor-plugin',
        'global-vars',
        'modify-vars',
        'production',
        'rootpath-relative',
        'rootpath-rewrite-urls',
        'rootpath',
        'relative-urls',
        'rewrite-urls',
        'browser',
        'no-js-errors',
        'legacy'
    ];

    function makeJob(testName) {
        sauceJobs[testName] = {
            options: {
                urls: testName === 'all' ?
                    browserTests.map(function(name) {
                        return 'http://localhost:8081/tmp/browser/test-runner-' + name + '.html';
                    }) :
                    ['http://localhost:8081/tmp/browser/test-runner-' + testName + '.html'],
                testname: testName === 'all' ? 'Unit Tests for Less.js' : testName,
                browsers: browsers,
                public: 'public',
                recordVideo: false,
                videoUploadOnPass: false,
                recordScreenshots: process.env.TRAVIS_BRANCH !== 'master',
                build: process.env.TRAVIS_BRANCH === 'master' ? process.env.TRAVIS_JOB_ID : undefined,
                tags: [process.env.TRAVIS_BUILD_NUMBER, process.env.TRAVIS_PULL_REQUEST, process.env.TRAVIS_BRANCH],
                statusCheckAttempts: -1,
                sauceConfig: {
                    'idle-timeout': 100
                },
                throttled: 5,
                onTestComplete: function(result, callback) {
                    // Called after a unit test is done, per page, per browser
                    // 'result' param is the object returned by the test framework's reporter
                    // 'callback' is a Node.js style callback function. You must invoke it after you
                    // finish your work.
                    // Pass a non-null value as the callback's first parameter if you want to throw an
                    // exception. If your function is synchronous you can also throw exceptions
                    // directly.
                    // Passing true or false as the callback's second parameter passes or fails the
                    // test. Passing undefined does not alter the test result. Please note that this
                    // only affects the grunt task's result. You have to explicitly update the Sauce
                    // Labs job's status via its REST API, if you want so.

                    // This should be the encrypted value in Travis
                    var user = process.env.SAUCE_USERNAME;
                    var pass = process.env.SAUCE_ACCESS_KEY;

                    git.short(function(hash) {
                        require('phin')({
                            method: 'PUT',
                            url: ['https://saucelabs.com/rest/v1', user, 'jobs', result.job_id].join('/'),
                            auth: { user: user, pass: pass },
                            data: {
                                passed: result.passed,
                                build: 'build-' + hash
                            }
                        }, function (error, response) {
                            if (error) {
                                console.log(error);
                                callback(error);
                            } else if (response.statusCode !== 200) {
                                console.log(response);
                                callback(new Error('Unexpected response status'));
                            } else {
                                callback(null, result.passed);
                            }
                        });
                    });

                }
            }
        };
    }

    // Make the SauceLabs jobs
    (['all'].concat(browserTests)).map(makeJob);

    // Project configuration.
    grunt.initConfig({

        pkg: grunt.file.readJSON('package.json'),
        meta: {
            copyright: 'Copyright (c) 2009-<%= grunt.template.today("yyyy") %>',
            banner: '/*!\n' +
                ' * Less - <%= pkg.description %> v<%= pkg.version %>\n' +
                ' * http://lesscss.org\n' +
                ' *\n' +
                ' * <%= meta.copyright %>, <%= pkg.author.name %> <<%= pkg.author.email %>>\n' +
                ' * Licensed under the <%= pkg.license %> License.\n' +
                ' *\n' +
                ' */\n\n' +
                ' /**' +
                ' * @license <%= pkg.license %>\n' +
                ' */\n\n'
        },

        shell: {
            options: {
                stdout: true,
                failOnError: true,
                execOptions: {
                    maxBuffer: Infinity
                }
            },
            test: {
                command: 'node test/index.js'
            },
            benchmark: {
                command: 'node benchmark/index.js'
            },
            opts: { // test running with all current options (using `opts` since `options` means something already)
                command: [ // @TODO: make this more thorough
                    // CURRENT OPTIONS
                    // --math
                    'node bin/lessc --math=always test/less/lazy-eval.less tmp/lazy-eval.css',
                    'node bin/lessc --math=parens-division test/less/lazy-eval.less tmp/lazy-eval.css',
                    'node bin/lessc --math=parens test/less/lazy-eval.less tmp/lazy-eval.css',
                    'node bin/lessc --math=strict test/less/lazy-eval.less tmp/lazy-eval.css',
                    'node bin/lessc --math=strict-legacy test/less/lazy-eval.less tmp/lazy-eval.css',

                    // DEPRECATED OPTIONS
                    // --strict-math
                    'node bin/lessc --strict-math=on test/less/lazy-eval.less tmp/lazy-eval.css',
                ].join(' && ')
            },
            plugin: {
                command: [
                    'node bin/lessc --clean-css="--s1 --advanced" test/less/lazy-eval.less tmp/lazy-eval.css',
                    'cd lib',
                    'node ../bin/lessc --clean-css="--s1 --advanced" ../test/less/lazy-eval.less ../tmp/lazy-eval.css',
                    'cd ..',
                    // Test multiple plugins
                    'node bin/lessc --plugin=clean-css="--s1 --advanced" --plugin=autoprefix="ie 11,Edge >= 13,Chrome >= 47,Firefox >= 45,iOS >= 9.2,Safari >= 9" test/less/lazy-eval.less tmp/lazy-eval.css'
                ].join(' && ')
            },
            'sourcemap-test': { // quoted value doesn't seem to get picked up by time-grunt, or isn't output, at least; maybe just "sourcemap" is fine?
                command: [
                    'node bin/lessc --source-map=test/sourcemaps/maps/import-map.map test/less/import.less test/sourcemaps/import.css',
                    'node bin/lessc --source-map test/less/sourcemaps/basic.less test/sourcemaps/basic.css'
                ].join(' && ')
            },
        },

        browserify: {
            browser: {
                src: ['./lib/less-browser/bootstrap.js'],
                options: {
                    exclude: ['promise'],
                    browserifyOptions: {
                        standalone: 'less',
                        noParse: ['clone']
                    }
                },
                dest: 'tmp/less.js'
            }
        },
        concat: {
            options: {
                stripBanners: 'all',
                banner: '<%= meta.banner %>'
            },
            browsertest: {
                src: COMPRESS_FOR_TESTS ? '<%= uglify.test.dest %>' : '<%= browserify.browser.dest %>',
                dest: 'test/browser/less.js'
            },
            dist: {
                src: '<%= browserify.browser.dest %>',
                dest: 'dist/less.js'
            }
        },

        uglify: {
            options: {
                banner: '<%= meta.banner %>',
                mangle: true,
                compress: {
                    pure_getters: true
                }
            },
            dist: {
                src: ['<%= concat.dist.dest %>'],
                dest: 'dist/less.min.js'
            },
            test: {
                src: '<%= browserify.browser.dest %>',
                dest: 'tmp/less.min.js'
            }
        },

        eslint: {
            target: ['Gruntfile.js',
                'test/**/*.js',
                'lib/less*/**/*.js',
                'bin/lessc',
                '!test/browser/jasmine-jsreporter.js',
                '!test/less/errors/plugin/plugin-error.js'
            ],
            options: {
                configFile: '.eslintrc.json'
            }
        },

        connect: {
            server: {
                options: {
                    port: 8081
                }
            }
        },

        jasmine: {
            options: {
                keepRunner: true,
                host: 'http://localhost:8081/',
                vendor: [
                    './node_modules/phantomjs-polyfill-object-assign/object-assign-polyfill.js',
                    'test/browser/vendor/promise.js',
                    'test/browser/jasmine-jsreporter.js',
                    'test/browser/common.js',
                    'test/browser/less.js'
                ],
                template: 'test/browser/test-runner-template.tmpl'
            },
            main: {
                // src is used to build list of less files to compile
                src: [
                    'test/less/*.less',
                    '!test/less/plugin-preeval.less', // uses ES6 syntax
                    // Don't test NPM import, obviously
                    '!test/less/plugin-module.less',
                    '!test/less/import-module.less',
                    '!test/less/javascript.less',
                    '!test/less/urls.less',
                    '!test/less/empty.less'
                ],
                options: {
                    helpers: 'test/browser/runner-main-options.js',
                    specs: 'test/browser/runner-main-spec.js',
                    outfile: 'tmp/browser/test-runner-main.html'
                }
            },
            legacy: {
                src: ['test/less/legacy/*.less'],
                options: {
                    helpers: 'test/browser/runner-legacy-options.js',
                    specs: 'test/browser/runner-legacy-spec.js',
                    outfile: 'tmp/browser/test-runner-legacy.html'
                }
            },
            strictUnits: {
                src: ['test/less/strict-units/*.less'],
                options: {
                    helpers: 'test/browser/runner-strict-units-options.js',
                    specs: 'test/browser/runner-strict-units-spec.js',
                    outfile: 'tmp/browser/test-runner-strict-units.html'
                }
            },
            errors: {
                src: ['test/less/errors/*.less', '!test/less/errors/javascript-error.less', 'test/browser/less/errors/*.less'],
                options: {
                    timeout: 20000,
                    helpers: 'test/browser/runner-errors-options.js',
                    specs: 'test/browser/runner-errors-spec.js',
                    outfile: 'tmp/browser/test-runner-errors.html'
                }
            },
            noJsErrors: {
                src: ['test/less/no-js-errors/*.less'],
                options: {
                    helpers: 'test/browser/runner-no-js-errors-options.js',
                    specs: 'test/browser/runner-no-js-errors-spec.js',
                    outfile: 'tmp/browser/test-runner-no-js-errors.html'
                }
            },
            browser: {
                src: ['test/browser/less/*.less', 'test/browser/less/plugin/*.less'],
                options: {
                    helpers: 'test/browser/runner-browser-options.js',
                    specs: 'test/browser/runner-browser-spec.js',
                    outfile: 'tmp/browser/test-runner-browser.html'
                }
            },
            relativeUrls: {
                src: ['test/browser/less/relative-urls/*.less'],
                options: {
                    helpers: 'test/browser/runner-relative-urls-options.js',
                    specs: 'test/browser/runner-relative-urls-spec.js',
                    outfile: 'tmp/browser/test-runner-relative-urls.html'
                }
            },
            rewriteUrls: {
                src: ['test/browser/less/rewrite-urls/*.less'],
                options: {
                    helpers: 'test/browser/runner-rewrite-urls-options.js',
                    specs: 'test/browser/runner-rewrite-urls-spec.js',
                    outfile: 'tmp/browser/test-runner-rewrite-urls.html'
                }
            },
            rootpath: {
                src: ['test/browser/less/rootpath/*.less'],
                options: {
                    helpers: 'test/browser/runner-rootpath-options.js',
                    specs: 'test/browser/runner-rootpath-spec.js',
                    outfile: 'tmp/browser/test-runner-rootpath.html'
                }
            },
            rootpathRelative: {
                src: ['test/browser/less/rootpath-relative/*.less'],
                options: {
                    helpers: 'test/browser/runner-rootpath-relative-options.js',
                    specs: 'test/browser/runner-rootpath-relative-spec.js',
                    outfile: 'tmp/browser/test-runner-rootpath-relative.html'
                }
            },
            rootpathRewriteUrls: {
                src: ['test/browser/less/rootpath-rewrite-urls/*.less'],
                options: {
                    helpers: 'test/browser/runner-rootpath-rewrite-urls-options.js',
                    specs: 'test/browser/runner-rootpath-rewrite-urls-spec.js',
                    outfile: 'tmp/browser/test-runner-rootpath-rewrite-urls.html'
                }
            },
            production: {
                src: ['test/browser/less/production/*.less'],
                options: {
                    helpers: 'test/browser/runner-production-options.js',
                    specs: 'test/browser/runner-production-spec.js',
                    outfile: 'tmp/browser/test-runner-production.html'
                }
            },
            modifyVars: {
                src: ['test/browser/less/modify-vars/*.less'],
                options: {
                    helpers: 'test/browser/runner-modify-vars-options.js',
                    specs: 'test/browser/runner-modify-vars-spec.js',
                    outfile: 'tmp/browser/test-runner-modify-vars.html'
                }
            },
            globalVars: {
                src: ['test/browser/less/global-vars/*.less'],
                options: {
                    helpers: 'test/browser/runner-global-vars-options.js',
                    specs: 'test/browser/runner-global-vars-spec.js',
                    outfile: 'tmp/browser/test-runner-global-vars.html'
                }
            },
            postProcessorPlugin: {
                src: ['test/less/postProcessorPlugin/*.less'],
                options: {
                    helpers: ['test/plugins/postprocess/index.js','test/browser/runner-postProcessorPlugin-options.js'],
                    specs: 'test/browser/runner-postProcessorPlugin.js',
                    outfile: 'tmp/browser/test-runner-post-processor-plugin.html'
                }
            },
            preProcessorPlugin: {
                src: ['test/less/preProcessorPlugin/*.less'],
                options: {
                    helpers: ['test/plugins/preprocess/index.js','test/browser/runner-preProcessorPlugin-options.js'],
                    specs: 'test/browser/runner-preProcessorPlugin.js',
                    outfile: 'tmp/browser/test-runner-pre-processor-plugin.html'
                }
            },
            visitorPlugin: {
                src: ['test/less/visitorPlugin/*.less'],
                options: {
                    helpers: ['test/plugins/visitor/index.js','test/browser/runner-VisitorPlugin-options.js'],
                    specs: 'test/browser/runner-VisitorPlugin.js',
                    outfile: 'tmp/browser/test-runner-visitor-plugin.html'
                }
            },
            filemanagerPlugin: {
                src: ['test/less/filemanagerPlugin/*.less'],
                options: {
                    helpers: ['test/plugins/filemanager/index.js','test/browser/runner-filemanagerPlugin-options.js'],
                    specs: 'test/browser/runner-filemanagerPlugin.js',
                    outfile: 'tmp/browser/test-runner-filemanager-plugin.html'
                }
            }
        },

        'saucelabs-jasmine': sauceJobs,


        // Clean the version of less built for the tests
        clean: {
            test: ['test/browser/less.js', 'tmp', 'test/less-bom'],
            'sourcemap-test': ['test/sourcemaps/*.css', 'test/sourcemaps/*.map'],
            sauce_log: ['sc_*.log']
        }
    });

    // Load these plugins to provide the necessary tasks
    grunt.loadNpmTasks('grunt-saucelabs');

    require('jit-grunt')(grunt);

    // by default, run tests
    grunt.registerTask('default', [
        'test'
    ]);

    // Release
    grunt.registerTask('dist', [
        'browserify:browser',
        'concat:dist',
        'uglify:dist'
    ]);

    // Create the browser version of less.js
    grunt.registerTask('browsertest-lessjs', [
        'browserify:browser',
        'uglify:test',
        'concat:browsertest'
    ]);

    // Run all browser tests
    grunt.registerTask('browsertest', [
        'browsertest-lessjs',
        'connect',
        'jasmine'
    ]);

    // setup a web server to run the browser tests in a browser rather than phantom
    grunt.registerTask('browsertest-server', [
        'browsertest-lessjs',
        'jasmine::build',
        'connect::keepalive'
    ]);

    var previous_force_state = grunt.option('force');

    grunt.registerTask('force',function(set) {
        if (set === 'on') {
            grunt.option('force',true);
        }
        else if (set === 'off') {
            grunt.option('force',false);
        }
        else if (set === 'restore') {
            grunt.option('force',previous_force_state);
        }
    });

    grunt.registerTask('sauce', [
        'browsertest-lessjs',
        'jasmine::build',
        'connect',
        'sauce-after-setup'
    ]);

    grunt.registerTask('sauce-after-setup', [
        'saucelabs-jasmine:all',
        'clean:sauce_log'
    ]);

    var testTasks = [
        'clean',
        'eslint',
        'shell:test',
        'shell:opts',
        'shell:plugin',
        'browsertest'
    ];

    if (isNaN(Number(process.env.TRAVIS_PULL_REQUEST, 10)) &&
        Number(process.env.TRAVIS_NODE_VERSION) === 4 &&
        (process.env.TRAVIS_BRANCH === 'master' || process.env.TRAVIS_BRANCH === '3.x')) {
        testTasks.push('force:on');
        testTasks.push('sauce-after-setup');
        testTasks.push('force:off');
    }

    // Run all tests
    grunt.registerTask('test', testTasks);

    // Run shell option tests (includes deprecated options)
    grunt.registerTask('shell-options', ['shell:opts']);

    // Run shell plugin test
    grunt.registerTask('shell-plugin', ['shell:plugin']);

    // Run all tests
    grunt.registerTask('quicktest', testTasks.slice(0, -1));

    // generate a good test environment for testing sourcemaps
    grunt.registerTask('sourcemap-test', [
        'clean:sourcemap-test',
        'shell:sourcemap-test',
        'connect::keepalive'
    ]);

    // Run benchmark
    grunt.registerTask('benchmark', [
        'shell:benchmark'
    ]);

};