import moment from 'moment';
import fetch from 'node-fetch';

const _accessTokenEndpoint =
    'https://idm.staging.floriday.io/oauth2/ausmw6b47z1BnlHkw0h7/v1/token';

async function getClientToken(models) {
    const clientConfigData = await models.clientConfig.findAll();

    const now = moment().format('YYYY-MM-DD HH:mm:ss');
    const tokenExpirationDate = clientConfigData[0].tokenExpiration;

    if (
        clientConfigData[0].tokenExpiration == null ||
        moment(now).isAfter(tokenExpirationDate)
    ) {
        let clientId = clientConfigData[0].clientId;
        let clientSecret = clientConfigData[0].clientSecret;

        const tokenRequest = await fetch(_accessTokenEndpoint, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
            },
            body: `grant_type=client_credentials&client_id=${clientId}&client_secret=${clientSecret}&scope=role:app catalog:read supply:read organization:read network:read`,
        });

        const tokenResponse = await tokenRequest.json();

        if (tokenRequest.status === 200) {
            console.log('Token request successful');
        } else {
            throw new Error(
                `Token request failed with status ${tokenRequest.status}`
            );
        }

        const accessToken = tokenResponse.access_token;
        let now = moment().format('YYYY-MM-DD HH:mm:ss');

        let tokenExpirationDate = moment(now)
            .add(tokenResponse.expires_in, 's')
            .format('YYYY-MM-DD HH:mm:ss');

        updateClientConfig(
            models,
            clientId,
            clientSecret,
            accessToken,
            tokenExpirationDate
        );

        return [accessToken, tokenExpirationDate];
    } else {
        console.log('Using the current token...');
        return [clientConfigData[0].currentToken, tokenExpirationDate];
    }
}

async function updateClientConfig(
    models,
    clientId,
    clientSecret,
    accessToken,
    tokenExpirationDate
) {
    try {
        console.log('Updating the client config with the new token...');
        await models.clientConfig.update(
            {
                clientId: clientId,
                clientSecret: clientSecret,
                currentToken: accessToken,
                tokenExpiration: tokenExpirationDate,
            },
            {
                where: {
                    id: 1,
                },
            }
        );
        console.log('Client config updated, new Token set');
        console.log('New token expiration date: ', tokenExpirationDate);
    } catch (error) {
        console.log('There was a error while updating the client config');
        console.log(error);
    }
}

export { getClientToken };