✨ Adding has key document condition

src/main/java/fr/romitou/mongosk/skript/conditions/CondMongoDocHasKey.java

@@ -0,0 +1,61 @@
+package fr.romitou.mongosk.skript.conditions;
+
+import ch.njol.skript.Skript;
+import ch.njol.skript.doc.Description;
+import ch.njol.skript.doc.Examples;
+import ch.njol.skript.doc.Name;
+import ch.njol.skript.doc.Since;
+import ch.njol.skript.lang.Condition;
+import ch.njol.skript.lang.Expression;
+import ch.njol.skript.lang.SkriptParser;
+import ch.njol.util.Kleenean;
+import fr.romitou.mongosk.elements.MongoSKDocument;
+import org.bukkit.event.Event;
+
+import javax.annotation.Nonnull;
+
+@Name("Mongo document has key?")
+@Description("Checks if the documents contains the specified key.")
+@Examples({"set {_doc} to a new mongo document",
+    "set mongo value \"foo\" of {_doc} to \"bar\"",
+    "if mongo document {_doc} has key \"foo\":",
+    "\tbroadcast \"The 'foo' key exists!\"",
+    "else:",
+    "\tbroadcast \"The 'foo' key doesn't exist :(\""
+})
+@Since("2.1.0")
+public class CondMongoDocHasKey extends Condition {
+
+    static {
+        Skript.registerCondition(
+            CondMongoDocHasKey.class,
+            "mongo[(sk|db)] document[s] %mongoskdocuments% (1¦(has|contains)|2¦doesn't (have|contain)) key [named] %string%"
+        );
+    }
+
+    private Expression<MongoSKDocument> exprMongoSKDocument;
+    private Expression<String> exprKey;
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public boolean init(Expression<?>[] exprs, int matchedPattern, @Nonnull Kleenean isDelayed, SkriptParser.ParseResult parseResult) {
+        exprMongoSKDocument = (Expression<MongoSKDocument>) exprs[0];
+        exprKey = (Expression<String>) exprs[1];
+        setNegated(parseResult.mark == 2);
+        return true;
+    }
+
+    @Override
+    public boolean check(@Nonnull Event e) {
+        String key = exprKey.getSingle(e);
+        if (key == null)
+            return false;
+        return exprMongoSKDocument.check(e, doc -> doc.getBsonDocument().containsKey(key), isNegated());
+    }
+
+    @Nonnull
+    @Override
+    public String toString(Event e, boolean debug) {
+        return exprMongoSKDocument.toString(e, debug) + (isNegated() ? " doesn't have" : " has") + " key " + exprKey.toString(e, debug);
+    }
+}