From a4a03624da483f135453e523ef98394b7f80230e Mon Sep 17 00:00:00 2001
From: Subarna Singh <subarnasingh11@gmail.com>
Date: Thu, 26 Oct 2023 21:44:44 +0530
Subject: [PATCH] Feature/df 18875 cryptocompare inverse eth usd (#3049)

* CryptoCompare inverse behaviour

* changeset

* e2e test modified

* test renamed

* undo test changes

* undo test changes
---
 .changeset/nasty-students-perform.md                |  5 +++++
 .../sources/cryptocompare/src/config/includes.json  | 13 +++++++++++++
 .../sources/cryptocompare/src/endpoint/crypto.ts    |  6 ++++++
 packages/sources/cryptocompare/src/index.ts         |  2 ++
 4 files changed, 26 insertions(+)
 create mode 100644 .changeset/nasty-students-perform.md
 create mode 100644 packages/sources/cryptocompare/src/config/includes.json

diff --git a/.changeset/nasty-students-perform.md b/.changeset/nasty-students-perform.md
new file mode 100644
index 0000000000..39dcf2121a
--- /dev/null
+++ b/.changeset/nasty-students-perform.md
@@ -0,0 +1,5 @@
+---
+'@chainlink/cryptocompare-adapter': minor
+---
+
+inverse behaviour to support BTC/ETH pair
diff --git a/packages/sources/cryptocompare/src/config/includes.json b/packages/sources/cryptocompare/src/config/includes.json
new file mode 100644
index 0000000000..81d1f2b9ba
--- /dev/null
+++ b/packages/sources/cryptocompare/src/config/includes.json
@@ -0,0 +1,13 @@
+[
+  {
+    "from": "BTC",
+    "to": "ETH",
+    "includes": [
+      {
+        "from": "ETH",
+        "to": "BTC",
+        "inverse": true
+      }
+    ]
+  }
+]
diff --git a/packages/sources/cryptocompare/src/endpoint/crypto.ts b/packages/sources/cryptocompare/src/endpoint/crypto.ts
index 903155abb3..ab39e9cb26 100644
--- a/packages/sources/cryptocompare/src/endpoint/crypto.ts
+++ b/packages/sources/cryptocompare/src/endpoint/crypto.ts
@@ -14,6 +14,12 @@ export const endpoint = new CryptoPriceEndpoint({
   customRouter: (_req, adapterConfig) => {
     return adapterConfig.WS_ENABLED ? 'ws' : 'rest'
   },
+  requestTransforms: [
+    (req) => {
+      req.requestContext.data.base = req.requestContext.data.base.toUpperCase()
+      req.requestContext.data.quote = req.requestContext.data.quote?.toUpperCase()
+    },
+  ],
   inputParameters: cryptoInputParams,
   overrides: overrides.cryptocompare,
 })
diff --git a/packages/sources/cryptocompare/src/index.ts b/packages/sources/cryptocompare/src/index.ts
index d0d64ce507..ea85b53c9b 100644
--- a/packages/sources/cryptocompare/src/index.ts
+++ b/packages/sources/cryptocompare/src/index.ts
@@ -2,12 +2,14 @@ import { expose, ServerInstance } from '@chainlink/external-adapter-framework'
 import { PriceAdapter } from '@chainlink/external-adapter-framework/adapter'
 import { crypto, vwap, volume, marketcap } from './endpoint'
 import { config } from './config'
+import includes from './config/includes.json'
 
 export const adapter = new PriceAdapter({
   name: 'CRYPTOCOMPARE',
   defaultEndpoint: 'crypto',
   config,
   endpoints: [crypto, vwap, volume, marketcap],
+  includes,
   rateLimiting: {
     tiers: {
       free: {