// from http://webdriver.io/guide/services/visual-regression.html
var path = require('path');
var VisualRegressionCompare = require('wdio-visual-regression-service/compare');
function getScreenshotName(basePath) {
        return function(context) {
                var testName = context.test.title;
                var browserName = context.browser.name.toLowerCase();
                return path.join(basePath, `${testName}-${browserName}.png`);
        };
}


exports.config = {
        
        //
        // ==================
        // Specify Test Files
        // ==================
        // Define which test specs should run. The pattern is relative to the directory
        // from which `wdio` was called. Notice that, if you are calling `wdio` from an
        // NPM script (see https://docs.npmjs.com/cli/run-script) then the current working
        // directory is where your package.json resides, so `wdio` will be called from there.
        //
        specs: [
                './specs/**/*.js'
        ],
        // Patterns to exclude.
        exclude: [
                // 'path/to/excluded/files'
        ],
        //
        // ============
        // Capabilities
        // ============
        // Define your capabilities here. WebdriverIO can run multiple capabilities at the same
        // time. Depending on the number of capabilities, WebdriverIO launches several test
        // sessions. Within your capabilities you can overwrite the spec and exclude options in
        // order to group specific specs to a specific capability.
        //
        // First, you can define how many instances should be started at the same time. Let's
        // say you have 3 different capabilities (Chrome, Firefox, and Safari) and you have
        // set maxInstances to 1; wdio will spawn 3 processes. Therefore, if you have 10 spec
        // files and you set maxInstances to 10, all spec files will get tested at the same time
        // and 30 processes will get spawned. The property handles how many capabilities
        // from the same test should run tests.
        //
        maxInstances: 10,
        //
        // If you have trouble getting all important capabilities together, check out the
        // Sauce Labs platform configurator - a great tool to configure your capabilities:
        // https://docs.saucelabs.com/reference/platforms-configurator
        //
        capabilities: [
                // {
                //         browserName: 'firefox'
                // }, 
                {
                        browserName: 'chrome'
                }
        ],
        //
        // ===================
        // Test Configurations
        // ===================
        // Define all options that are relevant for the WebdriverIO instance here
        //
        // By default WebdriverIO commands are executed in a synchronous way using
        // the wdio-sync package. If you still want to run your tests in an async way
        // e.g. using promises you can set the sync option to false.
        sync: true,
        //
        // Level of logging verbosity: silent | verbose | command | data | result | error
        logLevel: 'silent',
        //
        // Enables colors for log output.
        coloredLogs: true,
        //
        // If you only want to run your tests until a specific amount of tests have failed use
        // bail (default is 0 - don't bail, run all tests).
        bail: 0,
        //
        // Saves a screenshot to a given path if a command fails.
        screenshotPath: './errorShots/',
        //
        // Set a base URL in order to shorten url command calls. If your url parameter starts
        // with "/", then the base url gets prepended.
        baseUrl: 'http://localhost:8081',
        //
        // Default timeout for all waitFor* commands.
        waitforTimeout: 10000,
        //
        // Default timeout in milliseconds for request
        // if Selenium Grid doesn't send response
        connectionRetryTimeout: 90000,
        //
        // Default request retries count
        connectionRetryCount: 3,
        //
        // Initialize the browser instance with a WebdriverIO plugin. The object should have the
        // plugin name as key and the desired plugin options as properties. Make sure you have
        // the plugin installed before running any tests. The following plugins are currently
        // available:
        // WebdriverCSS: https://github.com/webdriverio/webdrivercss
        // WebdriverRTC: https://github.com/webdriverio/webdriverrtc
        // Browserevent: https://github.com/webdriverio/browserevent
        // plugins: {
        //     webdrivercss: {
        //         screenshotRoot: 'my-shots',
        //         failedComparisonsRoot: 'diffs',
        //         misMatchTolerance: 0.05,
        //         screenWidth: [320,480,640,1024]
        //     },
        //     webdriverrtc: {},
        //     browserevent: {}
        // },
        plugins: {
                'wdio-screenshot': {},
        },
        //
        // Test runner services
        // Services take over a specific job you don't want to take care of. They enhance
        // your test setup with almost no effort. Unlike plugins, they don't add new
        // commands. Instead, they hook themselves up into the test process.
        // services: [],
        services: [
                'visual-regression',
                'selenium-standalone',
                'static-server'
        ],
        
        //////////////////////////////////////////////////////////////////////////////
        //                set up static-sterver
        //////////////////////////////////////////////////////////////////////////////
        staticServerFolders: [
                { mount: '/', path: '../' },
        ],
        staticServerPort: 8081,
        staticServerLog: '/tmp',
        
        visualRegression: {
                compare: new VisualRegressionCompare.LocalCompare({
                        referenceName: getScreenshotName(path.join(process.cwd(), 'screenshots/reference')),
                        screenshotName: getScreenshotName(path.join(process.cwd(), 'screenshots/screen')),
                        diffName: getScreenshotName(path.join(process.cwd(), 'screenshots/diff')),
                        misMatchTolerance: 0.40,
                }),
                viewportChangePause: 300,
                widths: [320, 480, 640, 1024],
                orientations: ['landscape', 'portrait'],
        },
        //
        // Framework you want to run your specs with.
        // The following are supported: Mocha, Jasmine, and Cucumber
        // see also: http://webdriver.io/guide/testrunner/frameworks.html
        //
        // Make sure you have the wdio adapter package for the specific framework installed
        // before running any tests.
        framework: 'mocha',
        //
        // Test reporter for stdout.
        // The only one supported by default is 'dot'
        // see also: http://webdriver.io/guide/testrunner/reporters.html
        // reporters: ['dot'],
        reporters: ['spec'],
        // 
        //
        // Options to be passed to Mocha.
        // See the full list at http://mochajs.org/
        mochaOpts: {
                ui: 'bdd',
                timeout: 20000
        },
}