From b1c423e4374a58b046f085b94568a258fbbc7b16 Mon Sep 17 00:00:00 2001
From: Umputun <umputun@gmail.com>
Date: Tue, 26 Dec 2017 17:27:48 -0600
Subject: [PATCH] limit comments per user

---
 app/store/bolt.go | 8 ++++++++
 remark.rest       | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/app/store/bolt.go b/app/store/bolt.go
index 66079c8a..99e2117c 100644
--- a/app/store/bolt.go
+++ b/app/store/bolt.go
@@ -24,6 +24,7 @@ const (
 	userBucketName     = "users"
 	blocksBucketPrefix = "block-"
 	lastLimit          = 1000
+	userLimit          = 100
 )
 
 // NewBoltDB makes persistent boltdb-based store
@@ -440,6 +441,13 @@ func (b *BoltDB) GetForUser(locator Locator, userID string) (comments []Comment,
 			comments = append(comments, c)
 		}
 	}
+
+	// limit comment to recent up to userLimit. TODO: optimize to fetch in sorted order
+	sort.Slice(comments, func(i int, j int) bool { return comments[i].Timestamp.After(comments[j].Timestamp) })
+	if len(comments) > userLimit {
+		comments = comments[:userLimit]
+	}
+
 	return comments, err
 }
 
diff --git a/remark.rest b/remark.rest
index ea148379..0dc07699 100644
--- a/remark.rest
+++ b/remark.rest
@@ -37,7 +37,7 @@ GET https://demo.remark42.com/api/v1/user
 GET https://demo.remark42.com/api/v1/id/3665976683?url=https://radio-t.com/p/2017/12/16/podcast-576/
 
 ### get comment by user id
-GET https://demo.remark42.com/api/v1/comments?user=grigorybakunov
+GET https://demo.remark42.com/api/v1/comments?user=umputun
 
 ### get counts
 GET https://demo.remark42.com/api/v1/count?url=https://radio-t.com/p/2017/12/16/podcast-576/
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