Add system info

remote_frontend/src/widgets/SystemInfoWidget.tsx

@@ -0,0 +1,120 @@
+import React from "react";
+import { SysInfoApi, SysInfoConfig, SysInfoStatus } from "../api/SysInfoApi";
+import { AsyncWidget } from "./AsyncWidget";
+import { SectionContainer } from "./SectionContainer";
+import { Field, ProgressBar } from "@fluentui/react-components";
+import { filesize } from "filesize";
+import { format_duration } from "../utils/time_utils";
+import { useToast } from "../hooks/providers/ToastProvider";
+
+export function SystemInfoWidget(): React.ReactElement {
+  const [config, setConfig] = React.useState<SysInfoConfig | undefined>();
+
+  const load = async () => {
+    setConfig(await SysInfoApi.GetConfig());
+  };
+
+  return (
+    <SectionContainer title="System info">
+      <AsyncWidget
+        loadKey={1}
+        load={load}
+        errMsg="Failed to check system configuration!"
+        loadingMessage="Checking server configuration..."
+        build={() =>
+          config?.allowed ? (
+            <SystemInfoWidgetInner />
+          ) : (
+            <SystemInfoWidgetUnavailable />
+          )
+        }
+      />
+    </SectionContainer>
+  );
+}
+
+function SystemInfoWidgetUnavailable(): React.ReactElement {
+  return (
+    <p style={{ textAlign: "center" }}>
+      Unfortunatley, system information is available. (not enough privileges)
+    </p>
+  );
+}
+
+function SystemInfoWidgetInner(): React.ReactElement {
+  const toast = useToast();
+
+  const [status, setStatus] = React.useState<SysInfoStatus | undefined>();
+
+  const load = async () => {
+    setStatus(await SysInfoApi.Status());
+  };
+
+  React.useEffect(() => {
+    const interval = setInterval(async () => {
+      try {
+        await load();
+      } catch (e) {
+        console.error(e);
+        toast("Error", "Failed to refresh system status!", "error");
+      }
+    }, 1500);
+    return () => clearInterval(interval);
+  });
+
+  return (
+    <AsyncWidget
+      loadKey={1}
+      load={load}
+      loadingMessage="Loading system status..."
+      errMsg="Failed to load system status!"
+      build={() => (
+        <div
+          style={{
+            display: "flex",
+            flexDirection: "row",
+            alignItems: "center",
+            justifyContent: "center",
+          }}
+        >
+          <Field
+            validationMessage={`${filesize(
+              status!.system.used_memory
+            )} of memory used out of ${filesize(
+              status!.system.available_memory + status!.system.used_memory
+            )}`}
+            validationState="none"
+            style={{ flex: 1 }}
+          >
+            <ProgressBar
+              value={
+                status!.system.used_memory /
+                (status!.system.available_memory + status!.system.used_memory)
+              }
+            />
+          </Field>
+          <div style={{ flex: 1 }}>
+            <p>
+              Load average: {status!.system.load_average.one}{" "}
+              {status!.system.load_average.five}{" "}
+              {status!.system.load_average.fifteen}
+            </p>
+            <UptimeWidget uptime={status!.system.uptime} />
+            Number physical cores: {status!.system.physical_core_count}
+          </div>
+        </div>
+      )}
+    />
+  );
+}
+
+function UptimeWidget(p: { uptime: number }): React.ReactElement {
+  const [uptime, setUptime] = React.useState(p.uptime);
+
+  React.useEffect(() => {
+    const interval = setInterval(() => setUptime((uptime) => uptime + 1), 1000);
+    return () => clearInterval(interval);
+  }, [p.uptime]);
+
+  return <p>Uptime: {format_duration(uptime)}</p>;
+}