adding monkeytype

backend/redis-scripts/get-rank.lua

@@ -0,0 +1,51 @@
+-- Helper to split CSV string into a list
+local function split_csv(csv)
+    local result = {}
+    for user_id in string.gmatch(csv, '([^,]+)') do
+        table.insert(result, user_id)
+    end
+    return result
+end
+
+local redis_call = redis.call
+local leaderboard_scores_key, leaderboard_results_key = KEYS[1], KEYS[2]
+
+local user_id = ARGV[1]
+local include_scores = ARGV[2]
+local user_ids_csv = ARGV[3]
+
+local rank = nil
+local friendsRank = nil
+local result = {}   
+local score = ''
+
+
+-- filtered leaderboard
+if user_ids_csv ~= "" then
+
+    local filtered_user_ids = split_csv(user_ids_csv)
+    local scored_users = {}
+    for _, user_id in ipairs(filtered_user_ids) do
+        local score = redis_call('ZSCORE', leaderboard_scores_key, user_id)
+        if score then
+            local number_score = tonumber(score)            
+            table.insert(scored_users, {user_id = user_id, score = number_score})
+        end
+    end
+    table.sort(scored_users, function(a, b) return a.score > b.score end)   
+
+    for i = 1, #scored_users do
+        if scored_users[i].user_id == user_id then
+            friendsRank = i - 1
+        end
+    end
+
+end
+
+rank = redis_call('ZREVRANK', leaderboard_scores_key, user_id)
+if (include_scores == "true") then
+    score = redis_call('ZSCORE', leaderboard_scores_key, user_id)
+end
+result = redis_call('HGET', leaderboard_results_key, user_id)
+
+return {rank, score, result, friendsRank}