add rudder-compat

Author: ryanmccrary

README.md

@@ -49,4 +49,5 @@ For now, it reads Segment cookies and uses if they exist. Also checks RudderStac
 - [ ] Store traits to localstorage?
 - [ ] Explore adding queue to localstorage (for durability)
 - [ ] Probably should prepend cookies with something
-- [ ] Need to decrypt and decode both RS cookies (don't want to include in core library)
+- [ ] Need to decrypt and decode both RS cookies (don't want to include in core library)
+- [ ] Actually manage sendEvent failures

package-lock.json

@@ -5,17 +5,20 @@
   "scripts": {
     "build": "rollup -c --bundleConfigAsCjs",
     "watch": "rollup -c -w",
-    "deploy": "aws s3 cp build/tt.js s3://tiny-tag/tt.js --content-encoding gzip",
-    "release": "npm run build && gzip -9 build/tt.js && mv build/tt.js.gz build/tt.js && npm run deploy",
+    "deploy": "aws s3 cp build/tt.js s3://tiny-tag/tinytag/tt.js --content-encoding gzip && aws s3 cp build/tt-rudder-compat.js s3://tiny-tag/tinytag/tt-rudder-compat.js --content-encoding gzip",
+    "release": "npm run build && gzip -9 build/tt.js && mv build/tt.js.gz build/tt.js && gzip -9 build/tt-rudder-compat.js && mv build/tt-rudder-compat.js.gz build/tt-rudder-compat.js && npm run deploy",
     "test": "jest",
     "test:coverage": "jest --coverage"
   },
   "devDependencies": {
     "@babel/core": "^7.26.9",
     "@babel/preset-env": "^7.26.9",
+    "@rollup/plugin-commonjs": "^28.0.2",
     "@rollup/plugin-json": "^6.1.0",
+    "@rollup/plugin-node-resolve": "^16.0.0",
     "@rollup/plugin-terser": "^0.4.4",
     "babel-jest": "^29.7.0",
+    "crypto-js": "^4.2.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "rollup": "^3.0.0"

package.json

@@ -1,17 +1,20 @@
 import terser from '@rollup/plugin-terser';
 import json from '@rollup/plugin-json';
+import { nodeResolve } from '@rollup/plugin-node-resolve'; // Resolve node_modules
+import commonjs from '@rollup/plugin-commonjs'; // Handle UMD/CommonJS
 
-export default {
-  input: 'src/index.js',
-  output: {
-    file: 'build/tt.js',
-    format: 'iife',
-    name: 'TinyTag', // Changed to avoid overriding window.tt
-    sourcemap: false
-  },
-  plugins: [
-    json(),
-    terser({
+export default [
+  {
+    input: 'src/index.js',
+    output: {
+      file: 'build/tt.js',
+      format: 'iife',
+      name: 'TinyTag', // Changed to avoid overriding window.tt
+      sourcemap: false
+    },
+    plugins: [
+      json(),
+      terser({
         compress: {
             drop_console: true,
             pure_funcs: ['console.log'],
@@ -24,6 +27,27 @@ export default {
           },
           mangle: { toplevel: true },
           output: { comments: false }
-    })
-  ]
-};
+      })
+    ]
+  },
+  {
+    input: 'src/rudder-compat.js',
+    output: {
+      file: 'build/tt-rudder-compat.js',
+      format: 'iife',
+      name: 'TinyTagRudderCompat',
+      sourcemap: false
+    },
+    plugins: [
+      nodeResolve({
+        browser: true // Resolve for browser environment
+      }),
+      commonjs(),
+      terser({
+        compress: { drop_console: true, pure_funcs: ['console.log'], passes: 3 },
+        mangle: { toplevel: true },
+        output: { comments: false }
+      })
+    ]
+  }
+];

rollup.config.js

@@ -0,0 +1,56 @@
+// import CryptoJS from 'crypto-js'; // For v1 decryption
+import { AES } from 'crypto-js';
+import { getCookie } from './cookie.js'; // Reuse TinyTag's getCookie
+
+// RudderStack v1 decryption key (placeholder, needs actual key)
+const V1_ENCRYPTION_KEY = 'Rudder'; // Replace with real key from RudderStack
+
+// Decode v3 encoded cookie (base64 JSON)
+function decodeV3Cookie(value) {
+  if (value && value.startsWith('RS_ENC_v3_')) {
+    const encoded = value.replace('RS_ENC_v3_', '');
+    try {
+      return JSON.parse(atob(encoded));
+    } catch (e) {
+      return null; // Invalid encoding
+    }
+  }
+  return value; // Not v3, return as-is
+}
+
+// Decrypt v1 encrypted cookie
+function decryptV1Cookie(value) {
+    if (value && !value.startsWith('RS_ENC_v3_')) {
+      try {
+        const bytes = AES.decrypt(value, V1_ENCRYPTION_KEY);
+        const decrypted = bytes.toString(CryptoJS.enc.Utf8);
+        return decrypted || value; // Return original if decryption fails or is empty
+      } catch (e) {
+        return 'whoa'; // Return original on exception
+      }
+    }
+    return value; // Not v3 or encrypted, return as-is
+  }
+
+// Enhance window.tt methods with RudderStack compatibility
+const originalGetUserId = window.tt.getUserId;
+window.tt.getUserId = function () {
+  const value = getCookie('rl_user_id');
+  return decodeV3Cookie(decryptV1Cookie(value)) || originalGetUserId();
+};
+
+const originalGetAnonymousId = window.tt.getAnonymousId;
+window.tt.getAnonymousId = function () {
+  const value = getCookie('rl_anonymous_id');
+  return decodeV3Cookie(decryptV1Cookie(value)) || originalGetAnonymousId();
+};
+
+const originalGetTraits = window.tt.getTraits;
+window.tt.getTraits = function () {
+  const value = getCookie('rl_trait');
+  const decoded = decodeV3Cookie(decryptV1Cookie(value));
+  return decoded ? JSON.parse(decoded) : originalGetTraits();
+};
+
+// Export for testing (optional, not used in IIFE)
+export { decodeV3Cookie, decryptV1Cookie };