From e712c0dd9349315f96519fffc54533d6436d9c49 Mon Sep 17 00:00:00 2001
From: Aditya Gupta <mail@adityagupta.dev>
Date: Sat, 4 Jul 2026 14:02:39 +0530
Subject: [PATCH] feat: Port attribute interface from pure-ts:attribute.ts

---
 .editorconfig     |   9 +++++
 cli/src/index.ts  | 101 +++++++++++++++++++++++++++++++++++++++++++++-
 eslint.config.mjs |   4 +-
 3 files changed, 111 insertions(+), 3 deletions(-)

diff --git a/.editorconfig b/.editorconfig
index e69de29..9d08a1a 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/cli/src/index.ts b/cli/src/index.ts
index cb0ff5c..5ac5ac5 100644
--- a/cli/src/index.ts
+++ b/cli/src/index.ts
@@ -1 +1,100 @@
-export {};
+export enum AttributeVisibility {
+  PUBLIC = "PUBLIC",
+  PRIVATE = "PRIVATE",
+}
+
+export class Attribute {
+  readonly name: string;
+  private value: string;
+  private visibility: AttributeVisibility;
+  private allowedEntities: Set<string>;
+
+  constructor(name: string, value: string, visibility: AttributeVisibility) {
+    this.name = name;
+    this.value = value;
+    this.visibility = visibility;
+    this.allowedEntities = new Set();
+  }
+
+  setValue(newValue: string) {
+    this.value = newValue;
+  }
+
+  getValue(): string {
+    return this.value;
+  }
+
+  hasAccess(objectId: string): boolean {
+    return (
+      this.visibility === AttributeVisibility.PUBLIC ||
+      this.allowedEntities.has(objectId)
+    );
+  }
+
+  getVisibility(): AttributeVisibility {
+    return this.visibility;
+  }
+
+  setPublic() {
+    this.visibility = AttributeVisibility.PUBLIC;
+  }
+
+  setPrivate() {
+    this.allowedEntities.clear();
+    this.visibility = AttributeVisibility.PRIVATE;
+  }
+
+  grandAccess(objectId: string) {
+    if (this.visibility === AttributeVisibility.PRIVATE) {
+      this.allowedEntities.add(objectId);
+    }
+  }
+
+  revokeAccess(objectId: string) {
+    if (
+      this.visibility === AttributeVisibility.PRIVATE &&
+      this.allowedEntities.has(objectId)
+    ) {
+      this.allowedEntities.delete(objectId);
+    }
+  }
+}
+
+export interface IAttribute {
+  id: string;
+  attributes: Map<string, Attribute>;
+
+  addAttribute(
+    name: string,
+    value: string,
+    visibility: AttributeVisibility,
+  ): void;
+  getVisibileAttributesFor(viewerId: string): Attribute[];
+}
+
+export abstract class AttributableObject implements IAttribute {
+  readonly id: string = crypto.randomUUID();
+  readonly attributes: Map<string, Attribute> = new Map<string, Attribute>();
+
+  addAttribute(
+    name: string,
+    value: string,
+    visibility: AttributeVisibility,
+  ): void {
+    if (this.attributes.has(name))
+      throw Error(`Attribute ${name} already exists`);
+    this.attributes.set(name, new Attribute(name, value, visibility));
+  }
+
+  removeAttribute(name: string): void {
+    if (!this.attributes.has(name))
+      throw Error(`Attribute ${name} does not exist`);
+    this.attributes.delete(name);
+  }
+
+  getVisibileAttributesFor(viewerId: string): Attribute[] {
+    return Array.from(this.attributes.values()).filter((attr) =>
+      attr.hasAccess(viewerId),
+    );
+  }
+}
diff --git a/eslint.config.mjs b/eslint.config.mjs
index bcf14ce..d9af63b 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,5 +1,5 @@
 import eslintConfigPrettier from "eslint-config-prettier";
-import js from "eslint/js";
+import js from "@eslint/js";
 import globals from "globals";
 import tseslint from "typescript-eslint";
 
@@ -8,7 +8,7 @@ export default [
     ignores: ["**/dist/**", "**/node_modules/**"],
   },
 
-  js.configs.recommend,
+  js.configs.recommended,
 
   ...tseslint.configs.recommended,