41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
const g_captcha_timeout_seconds = 600;
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const e_captcha = document.getElementsByClassName("captcha")[0];
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let g_captcha_timeout_remain = g_captcha_timeout_seconds;
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let g_current_captcha_id = e_captcha.children[0].value;
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async function getNewCaptcha() {
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const id = await fetch("/api/captcha/", { method: "POST"}).then(r => r.text());
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g_current_captcha_id = e_captcha.children[0].value = id;
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const style = window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark";
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setTimeout(() => { e_captcha.children[1].src = `/api/captcha/${id}/image?style=${style}` }, 600);
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g_captcha_timeout_remain = g_captcha_timeout_seconds;
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}
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e_captcha.classList.toggle("refresh");
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e_captcha.children[3].innerHTML =
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`<button id="refresh">Refresh</button>ed in <b><span id="remain">600</span></b> seconds.`;
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const captcha_refresh = document.getElementById("refresh");
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const captcha_remain = document.getElementById("remain");
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captcha_refresh.classList.toggle("refresh");
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captcha_refresh.addEventListener("click", async e => {
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e.preventDefault();
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e.target.disabled = true;
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setTimeout(async () => {
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e.target.disabled = false;
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await fetch(`/api/captcha/${g_current_captcha_id}?remove`); }, 3000);
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e_captcha.children[2].value = "";
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await getNewCaptcha();
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});
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// Remove unused CAPTCHA on a server.
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window.addEventListener("unload", () => fetch(`/api/captcha/${g_current_captcha_id}?remove`));
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setInterval(async () => {
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captcha_remain.innerText = --g_captcha_timeout_remain;
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if (g_captcha_timeout_remain == 0)
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await getNewCaptcha();
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}, 1000); |