// Gulp Tools
var gulp = require("gulp");
// var uglify = require("gulp-uglify");
// var typescript = require("gulp-typescript");
// var sourcemaps = require("gulp-sourcemaps");
// var srcToVariable = require("gulp-content-to-variable");
// var merge2 = require("merge2");
// var concat = require("gulp-concat");
// var rename = require("gulp-rename");
// var cleants = require("gulp-clean-ts-extends");
// var replace = require("gulp-replace");
// var expect = require("gulp-expect-file");
// var optimisejs = require("gulp-optimize-js");
// var filter = require('gulp-filter');
// var path = require("path");

// // Gulp Helpers
// var addDtsExport = require("./helpers/gulp-addDtsExport");
// var addDecorateAndExtends = require("./helpers/gulp-decorateAndExtends");
// var addModuleExports = require("./helpers/gulp-addModuleExports");
// var addES6Exports = require("./helpers/gulp-addES6Exports");
// var uncommentShader = require("./helpers/gulp-removeShaderComments");

// Import Gulp Tasks
require("./tasks/gulpTasks-libraries");
require("./tasks/gulpTasks-viewerLibraries");
require("./tasks/gulpTasks-tsLint");
require("./tasks/gulpTasks-netlify");
require("./tasks/gulpTasks-whatsNew");
require("./tasks/gulpTasks-localRun");
require("./tasks/gulpTasks-watch");
require("./tasks/gulpTasks-typedoc");
require("./tasks/gulpTasks-intellisense");
require("./tasks/gulpTasks-tests");

// // Import Build Config
// var config = require("./config.json");

// var includeShadersStream;
// var shadersStream;

// var extendsSearchRegex = /var\s__extends[\s\S]+?\}\)\(\);/g;
// var decorateSearchRegex = /var\s__decorate[\s\S]+?\};/g;

// /**
//  * TS configurations shared in the gulp file.
//  */
// var tsConfig = {
//     noResolve: true,
//     target: "ES5",
//     declarationFiles: true,
//     typescript: require("typescript"),
//     experimentalDecorators: true,
//     isolatedModules: false,
//     noImplicitAny: true,
//     noImplicitReturns: true,
//     noImplicitThis: true,
//     noUnusedLocals: true,
//     strictNullChecks: true,
//     strictFunctionTypes: true,
//     types: [],
//     lib: [
//         "dom",
//         "es2015.promise",
//         "es5"
//     ]
// };
// var tsProject = typescript.createProject(tsConfig);

// function processDependency(kind, dependency, filesToLoad, firstLevelOnly) {
//     if (!firstLevelOnly && dependency.dependUpon) {
//         for (var i = 0; i < dependency.dependUpon.length; i++) {
//             var dependencyName = dependency.dependUpon[i];
//             var parent = config.workloads[dependencyName];
//             processDependency(kind, parent, filesToLoad);
//         }
//     }

//     var content = dependency[kind];
//     if (!content) {
//         return;
//     }

//     for (var i = 0; i < content.length; i++) {
//         var file = content[i];

//         if (filesToLoad.indexOf(file) === -1) {
//             filesToLoad.push(file);
//         }
//     }
// }

// function determineFilesToProcess(kind) {
//     var currentConfig = config.build.currentConfig;
//     var buildConfiguration = config.buildConfigurations[currentConfig];
//     var filesToLoad = [];

//     for (var index = 0; index < buildConfiguration.length; index++) {
//         var dependencyName = buildConfiguration[index];
//         var dependency = config.workloads[dependencyName];

//         if (kind === "directFiles" && !dependency) {
//             filesToLoad.push("../../dist/preview release/" + dependencyName);
//         }
//         else if (dependency) {
//             processDependency(kind, dependency, filesToLoad);
//         }
//     }

//     if (kind === "shaderIncludes") {
//         for (var index = 0; index < filesToLoad.length; index++) {
//             filesToLoad[index] = "../../src/Shaders/ShadersInclude/" + filesToLoad[index] + ".fx";
//         }
//     } else if (kind === "shaders") {
//         for (var index = 0; index < filesToLoad.length; index++) {
//             var name = filesToLoad[index];
//             filesToLoad[index] = "../../src/Shaders/" + filesToLoad[index] + ".fx";
//         }
//     }

//     return filesToLoad;
// }

// /*
//  * Shader Management.
//  */
// function shadersName(filename) {
//     return path.basename(filename)
//         .replace(".fragment", "Pixel")
//         .replace(".vertex", "Vertex")
//         .replace(".fx", "Shader");
// }

// function includeShadersName(filename) {
//     return path.basename(filename).replace(".fx", "");
// }

// /*
//  * Main necessary files stream Management.
//  */
// gulp.task("includeShaders", function(cb) {
//     var filesToProcess = determineFilesToProcess("shaderIncludes");
//     includeShadersStream = gulp.src(filesToProcess).
//         pipe(expect.real({ errorOnFailure: true }, filesToProcess)).
//         pipe(uncommentShader()).
//         pipe(srcToVariable({
//             variableName: "BABYLON.Effect.IncludesShadersStore", asMap: true, namingCallback: includeShadersName
//         }));
//     cb();
// });

// gulp.task("shaders", gulp.series("includeShaders", function(cb) {
//     var filesToProcess = determineFilesToProcess("shaders");
//     shadersStream = gulp.src(filesToProcess).
//         pipe(expect.real({ errorOnFailure: true }, filesToProcess)).
//         pipe(uncommentShader()).
//         pipe(srcToVariable({
//             variableName: "BABYLON.Effect.ShadersStore", asMap: true, namingCallback: shadersName
//         }));
//     cb();
// }));

// gulp.task("build", gulp.series("shaders", function build() {
//     var filesToProcess = determineFilesToProcess("files");
//     var directFilesToProcess = determineFilesToProcess("directFiles");
//     let mergedStreams = merge2(gulp.src(filesToProcess)
//         .pipe(expect.real({ errorOnFailure: true }, filesToProcess)),
//         shadersStream,
//         includeShadersStream);
//     if (directFilesToProcess.length) {
//         mergedStreams.add(gulp.src(directFilesToProcess));
//     }
//     return merge2(
//         mergedStreams
//             .pipe(concat(config.build.noModuleFilename))
//             .pipe(cleants())
//             .pipe(replace(extendsSearchRegex, ""))
//             .pipe(replace(decorateSearchRegex, ""))
//             .pipe(addDecorateAndExtends())
//             .pipe(gulp.dest(config.build.outputDirectory))
//             .pipe(rename(config.build.filename))
//             .pipe(addModuleExports("BABYLON", {
//                 dependencies: config.build.dependencies
//             }))
//             .pipe(gulp.dest(config.build.outputDirectory))
//             .pipe(rename(config.build.minFilename))
//             .pipe(uglify())
//             .pipe(optimisejs())
//             .pipe(gulp.dest(config.build.outputDirectory)),
//         mergedStreams
//             .pipe(concat("es6.js"))
//             .pipe(cleants())
//             .pipe(replace(extendsSearchRegex, ""))
//             .pipe(replace(decorateSearchRegex, ""))
//             .pipe(addES6Exports("BABYLON"))
//             .pipe(gulp.dest(config.build.outputDirectory))
//     );
// }));

// /*
//  * Compiles all typescript files and creating a js and a declaration file.
//  */
// gulp.task("typescript-compile", function() {
//     const dtsFilter = filter(['**', '!**/*.d.ts'], {restore: false});
//     var tsResult = gulp.src(config.typescript)
//         .pipe(dtsFilter)
//         .pipe(sourcemaps.init())
//         .pipe(tsProject({
//             summarizeFailureOutput: true
//         }));

//     tsResult.once("error", function(err) {
//         tsResult.once("finish", function() {
//             console.log("Typescript compile failed");
//             console.error(err);
//             process.exit(1);
//         });
//     });

//     return merge2([
//         tsResult.dts
//             .pipe(concat(config.build.declarationFilename))
//             .pipe(addDtsExport("BABYLON", "babylonjs"))
//             .pipe(gulp.dest(config.build.outputDirectory)),
//         tsResult.js
//             .pipe(sourcemaps.write("./",
//                 {
//                     includeContent: false,
//                     sourceRoot: (filePath) => {
//                         return "";
//                     }
//                 }))
//             .pipe(gulp.dest(config.build.srcOutputDirectory))
//     ])
// });

/**
 * Build the releasable files.
 * Back Compat Only, now name core as it is a lib
 */
gulp.task("typescript", gulp.series("core"));

/**
 * Build all libs.
 */
gulp.task("typescript-libraries", gulp.series(config.modules, config.viewerModules));

/**
 * Validate compile the code and check the comments and style case convention through typedoc
 */
gulp.task("typedoc-check", gulp.series("core", "gui", "loaders", "serializers", "typedoc-generate", "typedoc-validate"));

/**
 * Combine Webserver and Watch as long as vscode does not handle multi tasks.
 */
gulp.task("run", gulp.series("watch", "webserver"));

/**
 * Do it all (Build).
 */
gulp.task("typescript-all", gulp.series("typescript-libraries", "netlify-cleanup"));

/**
 * Do it all (tests).
 */
gulp.task("tests-all", gulp.series("tests-unit", "tests-modules", "tests-validation-virtualscreen", "tests-validation-browserstack"));

/**
 * The default task, concat and min the main BJS files.
 */
gulp.task("default", gulp.series("tsLint", "typescript-all", "intellisense", "typedoc-all", "tests-all"));