hanyuu/assets/oauth2.js/main.js

#include verify.js

(() => {
    const authoriseButtons = document.querySelectorAll('.js-authorise-action');

    for(const button of authoriseButtons) {
        button.disabled = false;

        button.onclick = () => {
            for(const other of authoriseButtons)
                other.disabled = true;

            const body = [];
            for(const name in button.dataset)
                body.push(encodeURIComponent(name) + '=' + encodeURIComponent(button.dataset[name]));

            const xhr = new XMLHttpRequest;
            xhr.responseType = 'json';
            xhr.open('POST', '/oauth2/authorise');
            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
            xhr.onload = () => {
                if(xhr.response.redirect)
                    location.assign(xhr.response.redirect);
                else
                    location.assign('/oauth2/error?error=invalid_request');
            };
            xhr.onerror = () => {
                for(const other of authoriseButtons)
                    other.disabled = false;
            };
            xhr.send(body.join('&'));
        };
    }

    if(location.pathname === '/oauth2/verify')
        HanyuuOAuth2Verify();
})();