From 42b9e3020474eeeb073ce5df392a92eaec325334 Mon Sep 17 00:00:00 2001
From: zer0dot <zer0dot.dev@gmail.com>
Date: Fri, 30 Sep 2022 15:35:32 -0400
Subject: [PATCH] feat: Added "followerProfileId" to `isFollowing()` check in
 follow modules.

---
 contracts/core/modules/FollowValidationModuleBase.sol           | 2 +-
 .../core/modules/follow/FollowValidatorFollowModuleBase.sol     | 1 +
 contracts/interfaces/IFollowModule.sol                          | 2 ++
 contracts/mocks/MockFollowModule.sol                            | 1 +
 4 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/contracts/core/modules/FollowValidationModuleBase.sol b/contracts/core/modules/FollowValidationModuleBase.sol
index dd54d3f..68f1bf0 100644
--- a/contracts/core/modules/FollowValidationModuleBase.sol
+++ b/contracts/core/modules/FollowValidationModuleBase.sol
@@ -33,7 +33,7 @@ abstract contract FollowValidationModuleBase is ModuleBase {
         address followModule = ILensHub(HUB).getFollowModule(profileId);
         bool isFollowing;
         if (followModule != address(0)) {
-            isFollowing = IFollowModule(followModule).isFollowing(profileId, user, 0);
+            isFollowing = IFollowModule(followModule).isFollowing(0, profileId, user, 0);
         } else {
             address followNFT = ILensHub(HUB).getFollowNFT(profileId);
             isFollowing = followNFT != address(0) && IERC721(followNFT).balanceOf(user) != 0;
diff --git a/contracts/core/modules/follow/FollowValidatorFollowModuleBase.sol b/contracts/core/modules/follow/FollowValidatorFollowModuleBase.sol
index 519117e..c75f046 100644
--- a/contracts/core/modules/follow/FollowValidatorFollowModuleBase.sol
+++ b/contracts/core/modules/follow/FollowValidatorFollowModuleBase.sol
@@ -21,6 +21,7 @@ abstract contract FollowValidatorFollowModuleBase is ModuleBase, IFollowModule {
      * and other properties.
      */
     function isFollowing(
+        uint256,
         uint256 profileId,
         address follower,
         uint256 followNFTTokenId
diff --git a/contracts/interfaces/IFollowModule.sol b/contracts/interfaces/IFollowModule.sol
index f618e09..bde970a 100644
--- a/contracts/interfaces/IFollowModule.sol
+++ b/contracts/interfaces/IFollowModule.sol
@@ -77,6 +77,7 @@ interface IFollowModule {
      *      2. The follow module:
      *          - Validates the subscription status for that given NFT, reverting on an invalid subscription.
      *
+     * @param followerProfileId The LensHub profile token ID of the follower's profile (currently unused, preemptive interface upgrade).
      * @param profileId The token ID of the profile to validate the follow for.
      * @param follower The follower address to validate the follow for.
      * @param followNFTTokenId The followNFT token ID to validate the follow for.
@@ -84,6 +85,7 @@ interface IFollowModule {
      * @return true if the given address is following the given profile ID, false otherwise.
      */
     function isFollowing(
+        uint256 followerProfileId,
         uint256 profileId,
         address follower,
         uint256 followNFTTokenId
diff --git a/contracts/mocks/MockFollowModule.sol b/contracts/mocks/MockFollowModule.sol
index 2cd364b..2e81c6e 100644
--- a/contracts/mocks/MockFollowModule.sol
+++ b/contracts/mocks/MockFollowModule.sol
@@ -27,6 +27,7 @@ contract MockFollowModule is IFollowModule {
     ) external override {}
 
     function isFollowing(
+        uint256,
         uint256,
         address,
         uint256