From d21a1f9edb97ed4a8b18215a1f5a96e0700cf7f4 Mon Sep 17 00:00:00 2001
From: Arda Serdar Pektezol <1669855+pektezol@users.noreply.github.com>
Date: Fri, 22 Sep 2023 16:35:37 +0300
Subject: fix: page number error on empty records (#62)

Former-commit-id: 2cc0de90a469feed0dd42cc2c0529b2e7ed72bae
---
 backend/handlers/map.go | 46 ++++++++++++++++++++++++++--------------------
 1 file changed, 26 insertions(+), 20 deletions(-)

(limited to 'backend/handlers/map.go')

diff --git a/backend/handlers/map.go b/backend/handlers/map.go
index c1f68eb..2a060e6 100644
--- a/backend/handlers/map.go
+++ b/backend/handlers/map.go
@@ -213,18 +213,21 @@ func FetchMapLeaderboards(c *gin.Context) {
 			records = append(records, record)
 			placement++
 		}
+		response.Records = records
 		totalRecords = len(records)
-		totalPages = (totalRecords + pageSize - 1) / pageSize
-		if page > totalPages {
-			c.JSON(http.StatusBadRequest, models.ErrorResponse("Invalid page number."))
-			return
-		}
-		startIndex := (page - 1) * pageSize
-		endIndex := startIndex + pageSize
-		if endIndex > totalRecords {
-			endIndex = totalRecords
+		if totalRecords != 0 {
+			totalPages = (totalRecords + pageSize - 1) / pageSize
+			if page > totalPages {
+				c.JSON(http.StatusBadRequest, models.ErrorResponse("Invalid page number."))
+				return
+			}
+			startIndex := (page - 1) * pageSize
+			endIndex := startIndex + pageSize
+			if endIndex > totalRecords {
+				endIndex = totalRecords
+			}
+			response.Records = records[startIndex:endIndex]
 		}
-		response.Records = records[startIndex:endIndex]
 	} else {
 		records := []RecordSingleplayer{}
 		sql = `SELECT id, user_id, users.user_name, users.avatar_link, score_count, score_time, demo_id, record_date
@@ -260,18 +263,21 @@ func FetchMapLeaderboards(c *gin.Context) {
 			records = append(records, record)
 			placement++
 		}
+		response.Records = records
 		totalRecords = len(records)
-		totalPages = (totalRecords + pageSize - 1) / pageSize
-		if page > totalPages {
-			c.JSON(http.StatusBadRequest, models.ErrorResponse("Invalid page number."))
-			return
-		}
-		startIndex := (page - 1) * pageSize
-		endIndex := startIndex + pageSize
-		if endIndex > totalRecords {
-			endIndex = totalRecords
+		if totalRecords != 0 {
+			totalPages = (totalRecords + pageSize - 1) / pageSize
+			if page > totalPages {
+				c.JSON(http.StatusBadRequest, models.ErrorResponse("Invalid page number."))
+				return
+			}
+			startIndex := (page - 1) * pageSize
+			endIndex := startIndex + pageSize
+			if endIndex > totalRecords {
+				endIndex = totalRecords
+			}
+			response.Records = records[startIndex:endIndex]
 		}
-		response.Records = records[startIndex:endIndex]
 	}
 	response.Pagination = models.Pagination{
 		TotalRecords: totalRecords,
-- 
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