import _ from "underscore";

let configuration: Record<string, any> = { logFetch: false };

const addEnvironmentVariablesToConfiguration = () => {
  _.forEach(configuration, (value, varName) => {
    const envValue = process.env[varName];
    if (envValue && envValue != "") {
      configuration[varName] = envValue;
    }
  });
};

const useQAConfiguration = () => {
  configuration = {
    AVVIR_GATEWAY_URL: "https://qa-api.avvir.io",
    AVVIR_ENVIRONMENT: "qa"
  };
  addEnvironmentVariablesToConfiguration();
};

const useAcceptanceConfiguration = () => {
  configuration = {
    AVVIR_GATEWAY_URL: "https://acceptance-api.avvir.io",
    AVVIR_ENVIRONMENT: "acceptance"
  };
  addEnvironmentVariablesToConfiguration();
};

const useProductionConfiguration = () => {
  configuration = {
    AVVIR_GATEWAY_URL: "https://api.avvir.io",
    AVVIR_ENVIRONMENT: "production"
  };
  addEnvironmentVariablesToConfiguration();
};

const useLocalProductionConfiguration = () => {
  configuration = {
    AVVIR_GATEWAY_URL: "https://api.avvir.io",
    AVVIR_ENVIRONMENT: "local-production"
  };
  addEnvironmentVariablesToConfiguration();
};

const useLocalConfiguration = () => {
  addEnvironmentVariablesToConfiguration();
  configuration = {
    AVVIR_GATEWAY_URL: "http://localhost:8080",
    AVVIR_ENVIRONMENT: "local"
  };
};

const setConfigurationFromEnvironmentVariable = () => {
  setConfigurationForEnvironment(process.env.AVVIR_ENVIRONMENT);
};

const setConfigurationForEnvironment = (env) => {
  if (env === "acceptance") {
    useAcceptanceConfiguration();
  } else if (env === "local-production") {
    useLocalProductionConfiguration();
  } else if (env === "local") {
    useLocalConfiguration();
  } else if (env === "qa") {
    useQAConfiguration();
  } else {
    useProductionConfiguration();
  }
};

setConfigurationFromEnvironmentVariable();

const sharedErrorHandler = ({ error }: any) => {
  throw error;
};

const getConfiguration = () => {
  return configuration;
};

const Config = {
  useAcceptanceConfiguration,
  useProductionConfiguration,
  useQAConfiguration,
  useLocalProductionConfiguration,
  useLocalConfiguration,
  getConfiguration,
  sharedErrorHandler,
  setConfigurationForEnvironment,
  setConfigurationFromEnvironmentVariable
};

export default Config;