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package io.logz.sawmill.parser;

import com.google.common.collect.ImmutableMap;
import io.logz.sawmill.utilities.JsonUtils;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class ConditionDefinitionParser {
    public static ConditionDefinition parse(Map condition) {
        String conditionType = JsonUtils.getTheOnlyKeyFrom(condition);
        if (JsonUtils.isValueList(condition, conditionType)) {
            // operands (and, or, not etc.)
            List> configList = JsonUtils.getList(condition, conditionType, true);
            List conditions = configList.stream().map(ConditionDefinitionParser::parse).collect(Collectors.toList());
            return new ConditionDefinition(conditionType, ImmutableMap.of("conditions", conditions));
        }
        if (JsonUtils.isValueMap(condition, conditionType)) {
            // terms (exists, hasValues etc.)
            Map configMap = JsonUtils.getMap(condition, conditionType, true);
            return new ConditionDefinition(conditionType, configMap);
        }
        throw new RuntimeException(conditionType + " should be list or map");

    }
}