you can vote on difficulties now

db/migrations/5_difficulty_votes.sql

@@ -0,0 +1,14 @@
+-- +migrate up
+CREATE TABLE difficulty_votes (
+  level_id  INTEGER  NOT NULL  references levels(id),
+  stars     INTEGER  NOT NULL
+);
+
+CREATE TABLE demon_difficulty_votes (
+  level_id          INTEGER  NOT NULL  references levels(id),
+  demon_difficulty  INTEGER  NOT NULL
+);
+
+-- +migrate down
+DROP TABLE difficulty_votes;
+DROP TABLE demon_difficulty_votes;

src/endpoints/levels/rateLevel.cr

@@ -0,0 +1,36 @@
+require "uri"
+
+include CrystalGauntlet
+
+CrystalGauntlet.endpoints["/rateGJStars211.php"] = ->(body : String): String {
+  params = URI::Params.parse(body)
+  puts params.inspect
+
+  level_id = params["levelID"].to_i
+  # todo: clamp this
+  stars = params["stars"].to_i
+
+  # todo: implement this for mod accounts
+
+  if DATABASE.scalar("select count(*) from levels where id = ?", level_id).as(Int64) == 0
+    return "-1"
+  end
+
+  DATABASE.exec("insert into difficulty_votes (level_id, stars) values (?, ?)", level_id, stars)
+
+  vote_count = DATABASE.scalar("select count(*) from difficulty_votes where level_id = ?", level_id).as(Int64)
+
+  # todo: make this configurable
+  if vote_count > 0
+    # todo: cache in some form?
+    votes = DATABASE.query_all("select stars from difficulty_votes where level_id = ?", level_id, as: {Int32})
+    avg = votes.sum() / votes.size
+    difficulty = stars_to_difficulty(Int32.new(avg.round()))
+
+    if difficulty
+      DATABASE.exec("update levels set community_difficulty = ? where id = ?", difficulty.value, level_id)
+    end
+  end
+
+  return "-1"
+}

src/enums.cr

@@ -36,6 +36,27 @@ module CrystalGauntlet
     end
   end
 
+  def stars_to_difficulty(stars : Int32) : LevelDifficulty | Nil
+    case stars
+    when 1
+      LevelDifficulty::Auto
+    when 2
+      LevelDifficulty::Easy
+    when 3
+      LevelDifficulty::Normal
+    when 4, 5
+      LevelDifficulty::Hard
+    when 6, 7
+      LevelDifficulty::Harder
+    when 8, 9
+      LevelDifficulty::Insane
+    when 10
+      LevelDifficulty::Demon
+    else
+      nil
+    end
+  end
+
   enum DemonDifficulty
     Easy
     Medium