feat: llm usage panel

1 files changed, 55 insertions, 0 deletions

diff --git a/static/modules/llm.js b/static/modules/llm.js
new file mode 100644
index 0000000..093c27c
--- /dev/null
+++ b/static/modules/llm.js
@@ -0,0 +1,55 @@
+const num = (v) => (v == null ? null : Number(v));
+const pct = (v) => (num(v) == null ? "—" : `${Math.round(num(v))}%`);
+const money = (v, cur) => (num(v) == null ? "—" : `${num(v).toFixed(2)}${cur ? " " + cur : ""}`);
+const clock = (sec) => (sec ? new Date(sec * 1000).toLocaleTimeString([], { hour: "2-digit", minute: "2-digit" }) : "");
+
+function line(label, value, percent) {
+  const row = document.createElement("div");
+  row.className = "row";
+  const name = document.createElement("span");
+  name.textContent = label;
+  const val = document.createElement("span");
+  val.className = "num";
+  val.textContent = value;
+  row.append(name, val);
+  const wrap = document.createElement("div");
+  wrap.append(row);
+  if (percent != null) {
+    const meter = document.createElement("div");
+    meter.className = "meter";
+    const fill = document.createElement("i");
+    fill.style.width = `${Math.max(0, Math.min(100, Number(percent)))}%`;
+    meter.append(fill);
+    wrap.append(meter);
+  }
+  return wrap;
+}
+
+export default {
+  title: "LLM usage",
+  interval: 5,
+
+  mount(el) {
+    const box = document.createElement("div");
+    box.className = "llm";
+    el.append(box);
+  },
+
+  update(state, el) {
+    const box = el.querySelector(".llm");
+    box.textContent = "";
+    if (state.offline) {
+      box.textContent = "llm-cost-dashboard offline";
+      return;
+    }
+    const c = state.claude ?? {};
+    const o = state.opencode ?? {};
+    box.append(
+      line("Context", pct(c.context_pct), c.context_pct),
+      line(`5h window ${clock(c.five_hour_resets_at)}`, pct(c.five_hour_pct), c.five_hour_pct),
+      line(`7d window ${clock(c.seven_day_resets_at)}`, pct(c.seven_day_pct), c.seven_day_pct),
+      line("Month", money(c.extra_used, c.extra_currency)),
+      line("opencode spend", money(o.total_cost)),
+    );
+  },
+};