Add AOS Starter Status Webpage to Debugging Site

Signed-off-by: Niko Sohmers <nikolai@sohmers.com>
Change-Id: Ie6109a6551b9ba44fa025bbe59d71a6a853e11b8
diff --git a/y2024/www/starter_handler.ts b/y2024/www/starter_handler.ts
new file mode 100644
index 0000000..2b953f3
--- /dev/null
+++ b/y2024/www/starter_handler.ts
@@ -0,0 +1,178 @@
+import {ByteBuffer} from 'flatbuffers'
+import {Connection} from '../../aos/network/www/proxy'
+import {Status, ApplicationStatus, State, LastStopReason, FileState} from '../../aos/starter/starter_generated'
+
+const NODES = ['/orin1', '/imu', '/roborio'];
+
+export class StarterHandler {
+  private statuses = new Map<string, ApplicationStatus[]>();
+
+  private statusList: HTMLElement =
+      (document.getElementById('status_list') as HTMLElement);
+
+  constructor(private readonly connection: Connection) {
+    for (const node in NODES) {
+      this.connection.addConfigHandler(() => {
+        this.connection.addHandler(
+          NODES[node] + '/aos', 'aos.starter.Status', (data) => {
+            this.handleStatus(data, NODES[node]);
+          });
+      });
+    }
+  }
+
+  private handleStatus(data: Uint8Array, node: string): void {
+    const fbBuffer = new ByteBuffer(data);
+    const status: Status = Status.getRootAsStatus(fbBuffer);
+
+    const temp: ApplicationStatus[] = new Array(status.statusesLength());
+
+    for (let i = 0; i < status.statusesLength(); i++) {
+      temp[i] = status.statuses(i);
+    }
+
+    this.statuses.set(node, temp);
+  }
+
+  setStateColor(div: HTMLElement): void {
+    div.className = '';
+    switch (div.innerHTML) {
+      case 'WAITING':
+        div.classList.add('yellow');
+        break;
+      case 'STARTING':
+        div.classList.add('yellowgreen');
+        break;
+      case 'RUNNING':
+        div.classList.add('lightgreen');
+        break;
+      case 'STOPPING':
+        div.classList.add('lightcoral');
+        break;
+      case 'STOPPED':
+        div.classList.add('lightcoral');
+        break;
+    }
+  }
+
+  setFileStateColor(div: HTMLElement): void {
+    div.className = '';
+    switch (div.innerHTML) {
+      case 'NOT_RUNNING':
+        div.classList.add('lightgreen');
+        break;
+      case 'NO_CHANGE':
+        div.classList.add('lightgreen');
+        break;
+      case 'CHANGED_DURING_STARTUP':
+        div.classList.add('lightcoral');
+        break;
+      case 'CHANGED':
+        div.classList.add('lightcoral');
+        break;
+    }
+  }
+
+  private populateStatusList() : void {
+    this.clearStatusList();
+
+    const ELEMENTS: string[] = [
+        'name',
+        'node',
+        'state',
+        'last_exit_code',
+        'pid',
+        // 'id',
+        'last_start_time',
+        'last_stop_reason',
+        // 'process_info',
+        // 'has_active_timing_report',
+        'file_state'
+    ];
+
+    // This is to add the field names as the top row
+    //---------------------------------------------------
+    const row = document.createElement('div');
+    row.className = "column_names";
+
+    for (const e in ELEMENTS) {
+      const element = document.createElement('div');
+      element.className = ELEMENTS[e];
+      element.innerHTML = ELEMENTS[e].toUpperCase();
+      element.style.fontWeight = 'bold';
+      row.appendChild(element);
+    }
+
+    this.statusList.appendChild(row);
+    //---------------------------------------------------
+
+    for (const node in NODES) {
+      const currentStatus = this.statuses.get(NODES[node]);
+
+      if (currentStatus) {
+        currentStatus.forEach(status => {
+          const row = document.createElement('div');
+          row.className = status.name();
+
+          for (const e in ELEMENTS) {
+            const element = document.createElement('div');
+            element.className = ELEMENTS[e];
+
+            switch (element.className) {
+              case 'name':
+                element.innerHTML = status.name();
+                break;
+              case 'node':
+                element.innerHTML = NODES[node];
+                break;
+              case 'state':
+                element.innerHTML = State[status.state()];
+                this.setStateColor(element);
+                break;
+              case 'last_exit_code':
+                element.innerHTML = status.lastExitCode().toString();
+                break;
+              case 'pid':
+                element.innerHTML = status.pid().toString();
+                break;
+              case 'last_start_time':
+                element.innerHTML = Number(status.lastStartTime() / 1000000000n).toString() + ' sec';
+                break;
+              case 'last_stop_reason':
+                element.innerHTML = LastStopReason[status.lastStopReason()];
+                break;
+              case 'file_state':
+                element.innerHTML = FileState[status.fileState()];
+                this.setFileStateColor(element);
+                break;
+              default:
+                element.innerHTML = "NA";
+                break;
+            }
+            row.appendChild(element);
+          }
+
+          this.statusList.appendChild(row);
+        })
+      }
+    }
+  }
+
+  private clearStatusList(): void {
+    if (!this.statusList) {
+        return;
+    }
+
+    while (this.statusList.firstChild) {
+        this.statusList.removeChild(this.statusList.firstChild);
+    }
+  }
+
+  draw(): void {
+    if (this.statuses) {
+      this.populateStatusList();
+    }
+
+    window.requestAnimationFrame(() => this.draw());
+  }
+}