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package dev.openfeature.contrib.providers.jsonlogic;

import dev.openfeature.sdk.EvaluationContext;

import javax.annotation.Nullable;

/**
 * A RuleFetcher exists to fetch rules from a likely remote location which will be used for local evaluation.
 */
public interface RuleFetcher {

    /**
     * Called to set up the client initially. This is used to pre-fetch initial data as well as setup mechanisms
     * to stay up to date.
     * @param initialContext application context known thus far
     */
    void initialize(EvaluationContext initialContext);

    /**
     * Given a key name, return the JSONLogic rules for it.
     * @param key The key to fetch logic for
     * @return json logic rules or null
     */
    @Nullable
    String getRuleForKey(String key);
}