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---
layout: page
---
<script async type="module" src="/assets/api.js"></script>
<style>
#messages {
max-height: 65vh;
overflow: auto;
padding-right: 2rem;
}
#messages .message {
border: 1px solid #AAA;
border-radius: 10px;
margin-bottom: 1rem;
padding: 2rem;
overflow: auto;
}
#messages .message .title {
font-weight: bold;
font-size: 120%;
}
#messages .message .secondaryTitle {
font-family: monospace;
color: #CCC;
}
#messages .message p {
font-family: monospace;
margin: 1rem 0 0 0;
}
</style>
<div id="messages"></div>
<span id="fail" style="color: red;"></span>
<script>
const messagesEl = document.getElementById("messages");
let messagesScrolledToBottom = true;
messagesEl.onscroll = () => {
const el = messagesEl;
messagesScrolledToBottom = el.scrollHeight == el.scrollTop + el.clientHeight;
};
function renderMessages(msgs) {
messagesEl.innerHTML = '';
msgs.forEach((msg) => {
const el = document.createElement("div");
el.className = "row message"
const elWithTextContents = (tag, body) => {
const el = document.createElement(tag);
el.appendChild(document.createTextNode(body));
return el;
};
const titleEl = document.createElement("div");
titleEl.className = "title";
el.appendChild(titleEl);
const userNameEl = elWithTextContents("span", msg.userID.name);
titleEl.appendChild(userNameEl);
const secondaryTitleEl = document.createElement("div");
secondaryTitleEl.className = "secondaryTitle";
el.appendChild(secondaryTitleEl);
const dt = new Date(msg.createdAt*1000);
const dtStr
= `${dt.getFullYear()}-${dt.getMonth()+1}-${dt.getDate()}`
+ ` ${dt.getHours()}:${dt.getMinutes()}:${dt.getSeconds()}`;
const userIDEl = elWithTextContents("span", `userID:${msg.userID.id} @ ${dtStr}`);
secondaryTitleEl.appendChild(userIDEl);
const bodyEl = document.createElement("p");
const bodyParts = msg.body.split("\n");
for (const i in bodyParts) {
if (i > 0) bodyEl.appendChild(document.createElement("br"));
bodyEl.appendChild(document.createTextNode(bodyParts[i]));
}
el.appendChild(bodyEl);
messagesEl.appendChild(el);
});
}
(async () => {
const failEl = document.getElementById("fail");
setErr = (msg) => failEl.innerHTML = `${msg} (please refresh the page to retry)`;
try {
const api = await import("/assets/api.js");
const history = await api.call("/api/chat/global/history");
const msgs = history.messages;
// history returns msgs in time descending, but we display them in time
// ascending.
msgs.reverse()
const sinceID = (msgs.length > 0) ? msgs[msgs.length-1].id : "";
const ws = await api.ws("/api/chat/global/listen", {
params: { sinceID },
});
while (true) {
renderMessages(msgs);
// If the user was previously scrolled to the bottom then keep them
// there.
if (messagesScrolledToBottom) {
messagesEl.scrollTop = messagesEl.scrollHeight;
}
const msg = await ws.next();
msgs.push(msg.message);
renderMessages(msgs);
}
} catch (e) {
e = `Failed to fetch message history: ${e}`
setErr(e);
console.error(e);
return;
}
})()
</script>
<style>
#append {
border: 1px dashed #AAA;
border-radius: 10px;
padding: 2rem;
}
#append #appendBody {
font-family: monospace;
}
#append #appendStatus {
color: red;
}
</style>
<form id="append">
<h5>New Message</h5>
<div class="row">
<div class="columns four">
<input class="u-full-width" placeholder="Name" id="appendName" type="text" />
<input class="u-full-width" placeholder="Secret" id="appendSecret" type="password" />
</div>
<div class="columns eight">
<p>
Your name is displayed alongside your message.
Your name+secret is used to generate your userID, which is also
displayed alongside your message.
Other users can validate two messages are from the same person
by comparing the messages' userID.
</p>
</div>
</div>
<div class="row">
<div class="columns twelve">
<textarea
style="font-family: monospace"
id="appendBody"
class="u-full-width"
placeholder="Well thought out statement goes here..."
></textarea>
</div>
</div>
<div class="row">
<div class="columns four">
<input class="u-full-width button-primary" id="appendSubmit" type="button" value="Submit" />
</div>
</div>
<span id="appendStatus"></span>
</form>
<script>
const append = document.getElementById("append");
const appendName = document.getElementById("appendName");
const appendSecret = document.getElementById("appendSecret");
const appendBody = document.getElementById("appendBody");
const appendSubmit = document.getElementById("appendSubmit");
const appendStatus = document.getElementById("appendStatus");
appendSubmit.onclick = async () => {
const appendSubmitOrigValue = appendSubmit.value;
appendSubmit.disabled = true;
appendSubmit.className = "";
appendSubmit.value = "Please hold...";
appendStatus.innerHTML = '';
try {
const api = await import("/assets/api.js");
await api.call('/api/chat/global/append', {
body: {
name: appendName.value,
password: appendSecret.value,
body: appendBody.value,
},
requiresPow: true,
});
appendBody.value = '';
} catch (e) {
appendStatus.innerHTML = e;
} finally {
appendSubmit.disabled = false;
appendSubmit.className = "button-primary";
appendSubmit.value = appendSubmitOrigValue;
}
};
</script>
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