From 19bb2971c0955ca7672b7205b488a3a9d3def21c Mon Sep 17 00:00:00 2001
From: luizstacio <luizstacio@gmail.com>
Date: Mon, 8 Jan 2024 13:11:25 -0300
Subject: [PATCH] feat: change from redirect url param to use document referrer

---
 README.md         | 38 +++++++++++++++++++++++++-------------
 static/index.html |  8 ++++----
 2 files changed, 29 insertions(+), 17 deletions(-)

diff --git a/README.md b/README.md
index 734503e..5f1ed3a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
-Faucet App
-===
+# Faucet App
+
 [![build](https://github.com/FuelLabs/faucet/actions/workflows/ci.yml/badge.svg)](https://github.com/FuelLabs/faucet/actions/workflows/ci.yml)
 [![discord](https://img.shields.io/badge/chat%20on-discord-orange?&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/xfpK4Pe)
 
@@ -7,20 +7,21 @@ A simple faucet app for dispensing tokens on a fuel network. It uses Google capt
 without requiring any social media based identification.
 
 ## Configuration
+
 The faucet makes use of environment variables for configuration.
 
-| Environment Variable | Description                                                             |
-|----------------------|-------------------------------------------------------------------------|
-| RUST_LOG             | EnvFilter configuration for adjusting logging granularity.              |
-| HUMAN_LOGGING        | If false, logs will be output as machine readable JSON.                 |
-| CAPTCHA_SECRET       | The secret key used for enabling Google captcha authentication.         |
-| CAPTCHA_KEY          | The website key used for enabling Google captcha authentication.        |
-| WALLET_SECRET_KEY    | A hex formatted string of the wallet private key that owns some tokens. |
-| FUEL_NODE_URL        | The GraphQL endpoint for connecting to fuel-core.                       |
+| Environment Variable | Description                                                                                     |
+| -------------------- | ----------------------------------------------------------------------------------------------- |
+| RUST_LOG             | EnvFilter configuration for adjusting logging granularity.                                      |
+| HUMAN_LOGGING        | If false, logs will be output as machine readable JSON.                                         |
+| CAPTCHA_SECRET       | The secret key used for enabling Google captcha authentication.                                 |
+| CAPTCHA_KEY          | The website key used for enabling Google captcha authentication.                                |
+| WALLET_SECRET_KEY    | A hex formatted string of the wallet private key that owns some tokens.                         |
+| FUEL_NODE_URL        | The GraphQL endpoint for connecting to fuel-core.                                               |
 | PUBLIC_FUEL_NODE_URL | The public GraphQL endpoint for connecting to fuel-core. Ex.: https://node.fuel.network/graphql |
-| SERVICE_PORT         | The port the service will listen for http connections on.               |
-| DISPENSE_AMOUNT      | Dispense amount on each faucet                                          |
-| MIN_GAS_PRICE        | The minimum gas price to use in each transfer                           |
+| SERVICE_PORT         | The port the service will listen for http connections on.                                       |
+| DISPENSE_AMOUNT      | Dispense amount on each faucet                                                                  |
+| MIN_GAS_PRICE        | The minimum gas price to use in each transfer                                                   |
 
 ## Build and Run
 
@@ -29,3 +30,14 @@ To run locally, assuming environment variables have already been set:
 ```sh
 cargo run
 ```
+
+## Query Params
+
+When integrating the faucet you can use the following query params:
+
+| Name     | Type    | Description                                                                                |
+| -------- | ------- | ------------------------------------------------------------------------------------------ |
+| address  | Address | Auto-fill the address field using the provided value                                       |
+| redirect | Boolean | If true once the faucet is complete, the user will be redirected back to the referrer page |
+
+Ex.: `http://localhost:3000/?address=fuel134ddh9pfsspar086htdldwxq2jsr3yvqtj5w456kkrz3s653la5q347kmc&redirect=true`
diff --git a/static/index.html b/static/index.html
index 5647fd5..1d510bb 100644
--- a/static/index.html
+++ b/static/index.html
@@ -233,9 +233,9 @@ <h2 class="response-title">Test Ether sent to the wallet</h2>
     const faucetApp = (function () {
       let providerUrl = "{{ public_node_url }}";
       let blockExplorer = "https://fuellabs.github.io/block-explorer-v2";
-      let query = params = new URLSearchParams(document.location.search);
+      let query = new URLSearchParams(document.location.search);
       let address = query.get('address');
-      let redirectUrl = decodeURIComponent(query.get('redirectUrl') || '');
+      let shouldRedirect = query.get('redirect') === 'true';
 
       if (address) {
         let $address = document.getElementById('address');
@@ -298,8 +298,8 @@ <h2 class="response-title">Test Ether sent to the wallet</h2>
             ).href = `${blockExplorer}/address/${address}?providerUrl=${encodeURIComponent(
               providerUrl
             )}`;
-            if (redirectUrl) {
-              location.href = redirectUrl;
+            if (shouldRedirect && document.referrer) {
+              location.href = document.referrer;
             }
           } else {
             document.getElementById("response-failure").innerText = data.error;