Add mongo script for finding which level(s) unlock a given level

scripts/mongodb/queries/what-unlocks-level.js

@@ -0,0 +1,54 @@
+// Usage: mongo <server>/coco -u <read-only-username> -p <read-only-password> what-unlocks-level.js
+// Prints the slugs for levels that unlock the level given in findUnlocksForSlug
+
+// CHANGE THIS to whatever level you want to find the unlocks for.
+var findUnlocksForSlug = 'kithgard-apprentice';
+
+
+var campaignSlugs = ['dungeon', 'forest', 'desert', 'mountain', 'glacier'];
+
+print("Levels that unlock " + findUnlocksForSlug + ":");
+
+var unlockLevel = db.levels.findOne({ slug: findUnlocksForSlug });
+if(!unlockLevel) {
+  print("Level " + findUnlocksForSlug + " not found.");
+  quit();
+}
+
+var levelID = unlockLevel.original;
+// print(levelID);
+
+campaignSlugs.forEach(function(slug) {
+  print("*** Searching " + slug + " ***");
+  var campaign = db.campaigns.findOne({slug: slug });
+  var levelOriginals = Object.keys(campaign.levels);
+
+  //*** Each level in the campaign
+
+  levelOriginals.some(function(original) {
+    var level = campaign.levels[original];
+    eachLevel(level);
+    // this stops the .some() after one, for testing
+    // return true;
+  });
+
+});
+
+// ***** //
+
+function eachLevel(level) {
+  if(level.rewards) {
+    for(var i=0; i < level.rewards.length; i++) {
+      var reward = level.rewards[i];
+      if(reward.level && reward.level == levelID) {
+        var found = db.levels.findOne({original: ObjectId(level.original)});
+        if(found.slug) {
+          print(found.slug);
+        } else {
+          print("Found unlocking level, but it has no slug: " + JSON.stringify(reward.level));
+        }
+      }
+    }
+  }
+}
+