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/*******************************************************************************
 * Copyright (C) 2020, exense GmbH
 *  
 * This file is part of STEP
 *  
 * STEP is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *  
 * STEP is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *  
 * You should have received a copy of the GNU Affero General Public License
 * along with STEP.  If not, see .
 ******************************************************************************/
package step.artefacts.handlers;

import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;

import jakarta.json.JsonObject;

import step.artefacts.TokenSelector;
import step.core.dynamicbeans.DynamicJsonObjectResolver;
import step.core.json.JsonProviderCache;
import step.grid.tokenpool.Interest;

public class TokenSelectorHelper {
	
	protected DynamicJsonObjectResolver dynamicJsonObjectResolver;
	
	public TokenSelectorHelper(DynamicJsonObjectResolver dynamicJsonObjectResolver) {
		super();
		this.dynamicJsonObjectResolver = dynamicJsonObjectResolver;
	}
	
	public Map getTokenSelectionCriteria(TokenSelector testArtefact, Map bindings) {
		String token = testArtefact.getToken().get();
		if(token!=null) {
			JsonObject selectionCriteriaBeforeEvaluation = JsonProviderCache.createReader(new StringReader(token)).readObject();			
			JsonObject selectionCriteriaJson = dynamicJsonObjectResolver.evaluate(selectionCriteriaBeforeEvaluation, bindings);
			Map selectionCriteria = new HashMap<>();
			selectionCriteriaJson.keySet().stream().forEach(key->selectionCriteria.put(key, new Interest(Pattern.compile(selectionCriteriaJson.getString(key)), true)));
			return selectionCriteria;
		} else {
			throw new RuntimeException("Token field hasn't been specified");
		}
	}
}