import XCaptcha from '../elements/x-captcha/x-captcha.js';

export default class Faucet {

static async tap(recipientAddress, captcha) {

const responseBody = {

address: recipientAddress,

};

if (captcha) {

if (captcha.provider) {

responseBody['captcha-provider'] = captcha.provider;

}

if (captcha.provider === XCaptcha.Providers.RECAPTCHA) {

responseBody['g-recaptcha-response'] = captcha.token;

} else {

responseBody['vaptcha-response'] = captcha.token;

}

}

const response = await fetch(`${Faucet.FAUCET_BACKEND}${Faucet.FAUCET_ENDPOINT_TAP}`, {

method: 'POST',

headers: {

'Content-Type': 'application/json'

},

body: JSON.stringify(responseBody)

}).then(response => response.json());

if (!response.success) {

const error = new Error('Faucet error');

error.error = response.error;

error.msg = response.msg;

throw error;

}

const timestamp = Date.now();

localStorage[Faucet.KEY_LAST_TAPPED] = timestamp;

}

static async info() {

Faucet._infoPromise = Faucet._infoPromise

|| fetch(`${Faucet.FAUCET_BACKEND}${Faucet.FAUCET_ENDPOINT_INFO}`).then(response => response.json());

return Faucet._infoPromise;

}

static async getDispenseAmount() {

const info = await Faucet.info();

return info.dispenseAmount; // in NIM

}

static async getFaucetAddress() {

const info = await Faucet.info();

return info.address;

}

static getLastTapped() {

return localStorage[Faucet.KEY_LAST_TAPPED];

}

}

Faucet.FAUCET_BACKEND = window.location.origin.indexOf('nimiq.com') !== -1

? 'https://faucet.nimiq-network.com/' : 'https://faucet.nimiq-testnet.com/';

Faucet.CAPTCHA_REQUIRED = window.location.origin.indexOf('nimiq.com') !== -1;

Faucet.FAUCET_ENDPOINT_TAP = 'tapit';

Faucet.FAUCET_ENDPOINT_INFO = 'info';

Faucet.KEY_LAST_TAPPED = 'faucet-last-tapped';