Add endpoint to retrieve people who have a certain badge

app/start.go

@@ -97,6 +97,7 @@ func Start(conf common.Conf, dbO *sqlx.DB) *fhr.Router {
 		r.Method("/api/v1/users/scores/best", v1.UserScoresBestGET)
 		r.Method("/api/v1/users/scores/recent", v1.UserScoresRecentGET)
 		r.Method("/api/v1/badges", v1.BadgesGET)
+		r.Method("/api/v1/badges/members", v1.BadgeMembersGET)
 		r.Method("/api/v1/beatmaps", v1.BeatmapGET)
 		r.Method("/api/v1/leaderboard", v1.LeaderboardGET)
 		r.Method("/api/v1/tokens", v1.TokenGET)

app/v1/badge.go

@@ -48,3 +48,35 @@ func BadgesGET(md common.MethodData) common.CodeMessager {
 	r.ResponseBase.Code = 200
 	return r
 }
+
+type badgeMembersData struct {
+	common.ResponseBase
+	Members []userData `json:"members"`
+}
+
+// BadgeMembersGET retrieves the people who have a certain badge.
+func BadgeMembersGET(md common.MethodData) common.CodeMessager {
+	i := common.Int(md.Query("id"))
+	if i == 0 {
+		return ErrMissingField("id")
+	}
+
+	var members badgeMembersData
+
+	err := md.DB.Select(&members.Members, `SELECT users.id, users.username, register_datetime, users.privileges,
+	latest_activity, users_stats.username_aka,
+	users_stats.country
+FROM user_badges ub
+INNER JOIN users ON users.id = ub.user
+INNER JOIN users_stats ON users_stats.id = ub.user
+WHERE badge = ?
+ORDER BY id ASC `+common.Paginate(md.Query("p"), md.Query("l"), 50), i)
+
+	if err != nil {
+		md.Err(err)
+		return Err500
+	}
+
+	members.Code = 200
+	return members
+}