1 files changed, 64 insertions, 0 deletions
diff --git a/tools/utils/tasks_tools.ts b/tools/utils/tasks_tools.ts
new file mode 100644
index 0000000..af1a069
--- /dev/null
+++ b/tools/utils/tasks_tools.ts
@@ -0,0 +1,64 @@
+import * as gulp from 'gulp';
+import * as util from 'gulp-util';
+import * as chalk from 'chalk';
+import * as gulpLoadPlugins from 'gulp-load-plugins';
+import * as _runSequence from 'run-sequence';
+import {readdirSync, existsSync, lstatSync} from 'fs';
+import {join} from 'path';
+import {TOOLS_DIR} from '../config';
+
+const TASKS_PATH = join(TOOLS_DIR, 'tasks');
+
+// NOTE: Remove if no issues with runSequence function below.
+// export function loadTasks(): void {
+//   scanDir(TASKS_PATH, (taskname) => registerTask(taskname));
+// }
+
+export function task(taskname: string, option?: string) {
+  util.log('Loading task', chalk.yellow(taskname, option || ''));
+  return require(join('..', 'tasks', taskname))(gulp, gulpLoadPlugins(), option);
+}
+
+export function runSequence(...sequence: any[]) {
+  let tasks = [];
+  let _sequence = sequence.slice(0);
+  sequence.pop();
+
+  scanDir(TASKS_PATH, taskname => tasks.push(taskname));
+
+  sequence.forEach(task => {
+    if (tasks.indexOf(task) > -1) { registerTask(task); }
+  });
+
+  return _runSequence(..._sequence);
+}
+
+// ----------
+// Private.
+
+function registerTask(taskname: string, filename?: string, option: string = ''): void {
+  gulp.task(taskname, task(filename || taskname, option));
+}
+
+// TODO: add recursive lookup ? or enforce pattern file + folder (ie ./tools/utils & ./tools/utils.ts )
+function scanDir(root: string, cb: (taskname: string) => void) {
+  if (!existsSync(root)) return;
+
+  walk(root);
+
+  function walk(path) {
+    let files = readdirSync(path);
+    for (let i = 0; i < files.length; i += 1) {
+      let file = files[i];
+      let curPath = join(path, file);
+      // if (lstatSync(curPath).isDirectory()) { // recurse
+      //   path = file;
+      //   walk(curPath);
+      // }
+      if (lstatSync(curPath).isFile() && /\.ts$/.test(file)) {
+        let taskname = file.replace(/(\.ts)/, '');
+        cb(taskname);
+      }
+    }
+  }
+}