initial commit

src/util/permissions.ts

@@ -0,0 +1,80 @@
+export class Permissions {
+  static readonly Admin = new Permissions(2 << 0);
+  static readonly Users = new Permissions(2 << 1);
+  static readonly Reports = new Permissions(2 << 2);
+  static readonly Feedback = new Permissions(2 << 3);
+  static readonly Settings = new Permissions(2 << 4);
+  static readonly Tools = new Permissions(2 << 5);
+
+  readonly value: number;
+
+  constructor(value: number | number[] | Permissions[] | null) {
+    if (value == null) {
+      this.value = 0;
+    } else if (typeof value == 'number') {
+      this.value = value;
+    } else if (Array.isArray(value)) {
+      let finalValue = 0;
+      for (const v of value) {
+        if (typeof v == 'number') {
+          finalValue |= v;
+        } else {
+          finalValue |= v.value;
+        }
+      }
+      this.value = finalValue;
+    } else {
+      throw 'Invalid arguments';
+    }
+  }
+
+  toJSON() {
+    return this.value;
+  }
+
+  toNumberArray() {
+    const array = [];
+    if (this.admin) array.push(Permissions.Admin.value);
+    if (this.users) array.push(Permissions.Users.value);
+    if (this.reports) array.push(Permissions.Reports.value);
+    if (this.feedback) array.push(Permissions.Feedback.value);
+    if (this.settings) array.push(Permissions.Settings.value);
+    if (this.tools) array.push(Permissions.Tools.value);
+
+    return array;
+  }
+
+  get admin() {
+    return (this.value & Permissions.Admin.value) != 0;
+  }
+  get users() {
+    return (this.value & Permissions.Users.value) != 0;
+  }
+  get reports() {
+    return (this.value & Permissions.Reports.value) != 0;
+  }
+  get feedback() {
+    return (this.value & Permissions.Reports.value) != 0;
+  }
+  get settings() {
+    return (this.value & Permissions.Reports.value) != 0;
+  }
+  get tools() {
+    return (this.value & Permissions.Tools.value) != 0;
+  }
+
+  hasPermissions(other: Permissions) {
+    return (other.value & this.value) == other.value;
+  }
+
+  static allPermissions() {
+    return [
+      Permissions.Admin,
+      Permissions.Users,
+      Permissions.Reports,
+      Permissions.Feedback,
+      Permissions.Settings,
+      Permissions.Tools
+    ];
+  }
+}