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feat: use faster profanity checker #1095

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77 changes: 34 additions & 43 deletions Node-1st-gen/text-moderation/functions/index.js
Original file line number Diff line number Diff line change
Expand Up @@ -13,73 +13,64 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
"use strict";

const functions = require('firebase-functions/v1');
const capitalizeSentence = require('capitalize-sentence');
const Filter = require('bad-words');
const badWordsFilter = new Filter();
const functions = require("firebase-functions/v1");
const capitalizeSentence = require("capitalize-sentence");
const { isProfane, replaceProfanities } = import("no-profanity");

// Moderates messages by lowering all uppercase messages and removing swearwords.
exports.moderator = functions.database.ref('/messages/{messageId}').onWrite((change) => {
const message = change.after.val();
exports.moderator = functions.database.ref("/messages/{messageId}").onWrite((change) => {
const message = change.after.val();

if (message && !message.sanitized) {
// Retrieved the message values.
functions.logger.log('Retrieved message content: ', message);
if (message && !message.sanitized) {
// Retrieved the message values.
functions.logger.log("Retrieved message content: ", message);

// Run moderation checks on on the message and moderate if needed.
const moderatedMessage = moderateMessage(message.text);
// Run moderation checks on on the message and moderate if needed.
const moderatedMessage = moderateMessage(message.text);

// Update the Firebase DB with checked message.
functions.logger.log(
'Message has been moderated. Saving to DB: ',
moderatedMessage
);
return change.after.ref.update({
text: moderatedMessage,
sanitized: true,
moderated: message.text !== moderatedMessage,
});
}
return null;
// Update the Firebase DB with checked message.
functions.logger.log("Message has been moderated. Saving to DB: ", moderatedMessage);
return change.after.ref.update({
text: moderatedMessage,
sanitized: true,
moderated: message.text !== moderatedMessage,
});
}
return null;
});

// Moderates the given message if appropriate.
function moderateMessage(message) {
// Re-capitalize if the user is Shouting.
if (isShouting(message)) {
functions.logger.log('User is shouting. Fixing sentence case...');
message = stopShouting(message);
}
// Re-capitalize if the user is Shouting.
if (isShouting(message)) {
functions.logger.log("User is shouting. Fixing sentence case...");
message = stopShouting(message);
}

// Moderate if the user uses SwearWords.
if (containsSwearwords(message)) {
functions.logger.log('User is swearing. moderating...');
message = moderateSwearwords(message);
}
// Moderate if the user uses SwearWords.
if (isProfane(message)) {
functions.logger.log("User is swearing. moderating...");
message = moderateSwearwords(message);
}

return message;
}

// Returns true if the string contains swearwords.
function containsSwearwords(message) {
return message !== badWordsFilter.clean(message);
return message;
}

// Hide all swearwords. e.g: Crap => ****.
function moderateSwearwords(message) {
return badWordsFilter.clean(message);
return replaceProfanities(message);
}

// Detect if the current message is shouting. i.e. there are too many Uppercase
// characters or exclamation points.
function isShouting(message) {
return message.replace(/[^A-Z]/g, '').length > message.length / 2 || message.replace(/[^!]/g, '').length >= 3;
return message.replace(/[^A-Z]/g, "").length > message.length / 2 || message.replace(/[^!]/g, "").length >= 3;
}

// Correctly capitalize the string as a sentence (e.g. uppercase after dots)
// and remove exclamation points.
function stopShouting(message) {
return capitalizeSentence(message.toLowerCase()).replace(/!+/g, '.');
return capitalizeSentence(message.toLowerCase()).replace(/!+/g, ".");
}
48 changes: 24 additions & 24 deletions Node-1st-gen/text-moderation/functions/package.json
Original file line number Diff line number Diff line change
@@ -1,26 +1,26 @@
{
"name": "text-moderation-functions",
"description": "Moderate text using Firebase Functions",
"dependencies": {
"bad-words": "^3.0.4",
"capitalize-sentence": "^0.1.5",
"firebase-admin": "^11.9.0",
"firebase-functions": "^4.4.1"
},
"devDependencies": {
"eslint": "^8.40.0"
},
"scripts": {
"lint": "./node_modules/.bin/eslint --max-warnings=0 .",
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log",
"compile": "cp ../../../tsconfig.template.json ./tsconfig-compile.json && tsc --project tsconfig-compile.json"
},
"engines": {
"node": "18"
},
"private": true
"name": "text-moderation-functions",
"description": "Moderate text using Firebase Functions",
"dependencies": {
"capitalize-sentence": "^0.1.5",
"firebase-admin": "^11.9.0",
"firebase-functions": "^4.4.1",
"no-profanity": "^1.4.2"
},
"devDependencies": {
"eslint": "^8.40.0"
},
"scripts": {
"lint": "./node_modules/.bin/eslint --max-warnings=0 .",
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log",
"compile": "cp ../../../tsconfig.template.json ./tsconfig-compile.json && tsc --project tsconfig-compile.json"
},
"engines": {
"node": "18"
},
"private": true
}
56 changes: 28 additions & 28 deletions Node/quickstarts/callable-functions/functions/package.json
Original file line number Diff line number Diff line change
@@ -1,30 +1,30 @@
{
"name": "functions",
"description": "Cloud Functions for Firebase",
"scripts": {
"lint": "eslint .",
"lintfix": "eslint . --fix",
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log",
"compile": "cp ../../../../tsconfig.template.json ./tsconfig-compile.json && tsc --project tsconfig-compile.json"
},
"engines": {
"node": "18"
},
"main": "index.js",
"dependencies": {
"bad-words": "^3.0.4",
"capitalize-sentence": "^0.1.5",
"firebase-admin": "^11.9.0",
"firebase-functions": "^4.4.1"
},
"devDependencies": {
"eslint": "^8.40.0",
"eslint-config-google": "^0.14.0",
"firebase-functions-test": "^3.1.0"
},
"private": true
"name": "functions",
"description": "Cloud Functions for Firebase",
"scripts": {
"lint": "eslint .",
"lintfix": "eslint . --fix",
"serve": "firebase emulators:start --only functions",
"shell": "firebase functions:shell",
"start": "npm run shell",
"deploy": "firebase deploy --only functions",
"logs": "firebase functions:log",
"compile": "cp ../../../../tsconfig.template.json ./tsconfig-compile.json && tsc --project tsconfig-compile.json"
},
"engines": {
"node": "18"
},
"main": "index.js",
"dependencies": {
"capitalize-sentence": "^0.1.5",
"firebase-admin": "^11.9.0",
"firebase-functions": "^4.4.1",
"no-profanity": "^1.4.2"
},
"devDependencies": {
"eslint": "^8.40.0",
"eslint-config-google": "^0.14.0",
"firebase-functions-test": "^3.1.0"
},
"private": true
}
19 changes: 4 additions & 15 deletions Node/quickstarts/callable-functions/functions/sanitizer.js
Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,7 @@
"use strict";

const capitalizeSentence = require("capitalize-sentence");
const Filter = require("bad-words");
const badWordsFilter = new Filter();
const {isProfane, replaceProfanities} = import("no-profanity");

// Sanitizes the given text if needed by replacing bad words with '*'.
exports.sanitizeText = (text) => {
Expand All @@ -28,30 +27,21 @@ exports.sanitizeText = (text) => {
}

// Moderate if the user uses SwearWords.
if (containsSwearwords(text)) {
if (isProfane(text)) {
console.log("User is swearing. moderating...");
text = replaceSwearwords(text);
}

return text;
};

/**
* Returns true if the string contains swearwords.
* @param {string} message
* @return {boolean}
*/
function containsSwearwords(message) {
return message !== badWordsFilter.clean(message);
}

/**
* Hide all swearwords. e.g: Crap => ****.
* @param {string} message
* @return {string}
*/
function replaceSwearwords(message) {
return badWordsFilter.clean(message);
return replaceProfanities(message);
}

/**
Expand All @@ -61,8 +51,7 @@ function replaceSwearwords(message) {
* @return {boolean}
*/
function isShouting(message) {
return message.replace(/[^A-Z]/g, "").length > message.length / 2 ||
message.replace(/[^!]/g, "").length >= 3;
return message.replace(/[^A-Z]/g, "").length > message.length / 2 || message.replace(/[^!]/g, "").length >= 3;
}

/**
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