'use strict';

var client = require('@aws-sdk/core/client');
var propertyProvider = require('@smithy/property-provider');

const ENV_KEY = "AWS_ACCESS_KEY_ID";
const ENV_SECRET = "AWS_SECRET_ACCESS_KEY";
const ENV_SESSION = "AWS_SESSION_TOKEN";
const ENV_EXPIRATION = "AWS_CREDENTIAL_EXPIRATION";
const ENV_CREDENTIAL_SCOPE = "AWS_CREDENTIAL_SCOPE";
const ENV_ACCOUNT_ID = "AWS_ACCOUNT_ID";
const fromEnv = (init) => async () => {
    init?.logger?.debug("@aws-sdk/credential-provider-env - fromEnv");
    const accessKeyId = process.env[ENV_KEY];
    const secretAccessKey = process.env[ENV_SECRET];
    const sessionToken = process.env[ENV_SESSION];
    const expiry = process.env[ENV_EXPIRATION];
    const credentialScope = process.env[ENV_CREDENTIAL_SCOPE];
    const accountId = process.env[ENV_ACCOUNT_ID];
    if (accessKeyId && secretAccessKey) {
        const credentials = {
            accessKeyId,
            secretAccessKey,
            ...(sessionToken && { sessionToken }),
            ...(expiry && { expiration: new Date(expiry) }),
            ...(credentialScope && { credentialScope }),
            ...(accountId && { accountId }),
        };
        client.setCredentialFeature(credentials, "CREDENTIALS_ENV_VARS", "g");
        return credentials;
    }
    throw new propertyProvider.CredentialsProviderError("Unable to find environment variable credentials.", { logger: init?.logger });
};

exports.ENV_ACCOUNT_ID = ENV_ACCOUNT_ID;
exports.ENV_CREDENTIAL_SCOPE = ENV_CREDENTIAL_SCOPE;
exports.ENV_EXPIRATION = ENV_EXPIRATION;
exports.ENV_KEY = ENV_KEY;
exports.ENV_SECRET = ENV_SECRET;
exports.ENV_SESSION = ENV_SESSION;
exports.fromEnv = fromEnv;