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package io.elastic.sailor;

import com.google.inject.AbstractModule;
import com.google.inject.name.Names;
import io.elastic.sailor.impl.MessageResolverImpl;
import static io.elastic.sailor.SailorEnvironmentModule.getOptionalIntegerValue;

public class AmqpEnvironmentModule extends AbstractModule {
    @Override
    protected void configure() {

        bindRequiredStringEnvVar(Constants.ENV_VAR_AMQP_URI);
        bindRequiredStringEnvVar(Constants.ENV_VAR_LISTEN_MESSAGES_ON);
        bindRequiredStringEnvVar(Constants.ENV_VAR_PUBLISH_MESSAGES_TO);
        bindRequiredStringEnvVar(Constants.ENV_VAR_DATA_ROUTING_KEY);
        bindRequiredStringEnvVar(Constants.ENV_VAR_ERROR_ROUTING_KEY);
        bindRequiredStringEnvVar(Constants.ENV_VAR_REBOUND_ROUTING_KEY);
        bindRequiredStringEnvVar(Constants.ENV_VAR_SNAPSHOT_ROUTING_KEY);
        bindRequiredStringEnvVar(Constants.ENV_VAR_MESSAGE_CRYPTO_PASSWORD);
        bindRequiredStringEnvVar(Constants.ENV_VAR_MESSAGE_CRYPTO_IV);

        // 1MB
        bindOptionalIntegerEnvVar(Constants.ENV_VAR_OBJECT_STORAGE_SIZE_THRESHOLD,
                MessageResolverImpl.OBJECT_STORAGE_SIZE_THRESHOLD_DEFAULT);
    }


    void bindRequiredStringEnvVar(final String name) {
        bind(String.class)
                .annotatedWith(Names.named(name))
                .toInstance(Utils.getEnvVar(name));
    }

    void bindOptionalIntegerEnvVar(final String name, int defaultValue) {
        bind(Integer.class)
                .annotatedWith(Names.named(name))
                .toInstance(getOptionalIntegerValue(name, defaultValue));
    }
}