feat: add Screeps console monitoring with configurable error handling and shard support (#84)

Reviewed-on: #84

index.js

@@ -197,7 +197,7 @@ export async function postCode() {
       });
   }
 
-  // ── Console monitoring (optional) ────────────────────────────────────────
+  // Console monitoring (optional)
   const monitorTicks = parseInt(core.getInput("monitor") || "0", 10);
   if (monitorTicks > 0) {
     const result = await monitorConsole(api, {

monitor.js

@@ -4,10 +4,6 @@ import fs from "fs";
 import path from "path";
 import os from "os";
 
-// ────────────────────────────────────────────────────────────────────────────
-// Shard / subscribe-path helpers
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * Returns true if the hostname is the official Screeps server.
  * Used to decide whether to prefix the subscribe path with a shard name.
@@ -37,10 +33,6 @@ export function buildSubscribePath(hostname, shard) {
   return isOfficialServer(hostname) ? "shard0/console" : "console";
 }
 
-// ────────────────────────────────────────────────────────────────────────────
-// Detection helpers
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * Returns true when errorText contains JavaScript stack-frame lines.
  * Screeps places runtime errors (including stack traces) in event.data.error.
@@ -76,17 +68,38 @@ export function detectWarning(logLines) {
  * @returns {string}
  */
 export function safeDecode(text) {
-  if (typeof text !== "string" || !text.includes("%")) return text;
+  if (typeof text !== "string") return text;
+  let result = text;
+  if (result.includes("%")) {
     try {
-    return decodeURIComponent(text);
+      result = decodeURIComponent(result);
     } catch (err) {
-    return text;
+      // Ignore decoding errors
     }
   }
+  // Screeps console often contains HTML entities
+  return result
+    .replace(/&lt;/g, "<")
+    .replace(/&gt;/g, ">")
+    .replace(/&quot;/g, '"')
+    .replace(/&amp;/g, "&");
+}
 
-// ────────────────────────────────────────────────────────────────────────────
-// Output helpers
-// ────────────────────────────────────────────────────────────────────────────
+/**
+ * Outputs text to the action log, splitting by newline to ensure proper display.
+ *
+ * @param {string} text
+ * @param {"info"|"warning"|"error"} level
+ */
+export function outputMultiline(text, level = "info") {
+  if (!text) return;
+  const lines = text.split(/\r?\n/);
+  lines.forEach((line) => {
+    if (level === "error") core.error(line);
+    else if (level === "warning") core.warning(line);
+    else core.info(line);
+  });
+}
 
 /**
  * Builds a CI-friendly progress string for core.info().
@@ -99,10 +112,6 @@ export function buildProgressMessage(elapsed, total) {
   return `[Monitor] ${elapsed}/${total} ticks elapsed...`;
 }
 
-// ────────────────────────────────────────────────────────────────────────────
-// File / artifact helpers
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * Writes an array of log lines to a UTF-8 text file, one line per entry.
  *
@@ -142,10 +151,6 @@ export async function uploadLogArtifact(
   }
 }
 
-// ────────────────────────────────────────────────────────────────────────────
-// Console event handler
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * Processes a single 'console' WebSocket event from the Screeps socket.
  * Mutates `state` and `stdoutBuffer` in place; never throws.
@@ -179,46 +184,42 @@ export function handleConsoleEvent(event, opts, stdoutBuffer, state) {
   const results = data?.messages?.results ?? [];
   const errorText = data?.error ?? null;
 
-  // ── Warn detection (always live regardless of logToFile) ─────────────────
+  // Warn detection (always live regardless of logToFile)
   if (detectWarning(logLines)) {
     state.sawWarningLog = true;
     const warnPattern = /<font\s+color=['"](?:orange|yellow)['"]/i;
     logLines
       .filter((l) => warnPattern.test(l))
-      .forEach((l) => core.warning(safeDecode(l)));
+      .forEach((l) => outputMultiline(safeDecode(l), "warning"));
   }
 
-  // ── Traceback detection in log lines (Screeps sometimes sends errors here) ─
+  // Traceback detection in log lines (Screeps sometimes sends errors here)
   if (logLines.some((l) => detectTraceback(l))) {
     state.sawTraceback = true;
     state.sawErrorLog = true;
   }
 
-  // ── Stdout lines ──────────────────────────────────────────────────────────
+  // Stdout lines
   const allStdout = [...logLines, ...results].map(safeDecode);
   if (allStdout.length > 0) {
     if (logToFile) {
       stdoutBuffer.push(...allStdout);
     } else {
-      allStdout.forEach((l) => core.info(l));
+      allStdout.forEach((l) => outputMultiline(l, "info"));
     }
   }
 
-  // ── Error field (always live) ─────────────────────────────────────────────
+  // Error field (always live)
   if (errorText) {
     state.sawErrorLog = true;
     const decodedError = safeDecode(errorText);
-    core.error(decodedError);
+    outputMultiline(decodedError, "error");
     if (detectTraceback(decodedError)) {
       state.sawTraceback = true;
     }
   }
 }
 
-// ────────────────────────────────────────────────────────────────────────────
-// Tick polling
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * Sleeps for the given number of milliseconds.
  *
@@ -262,10 +263,6 @@ export async function pollUntilDone(
   return elapsed;
 }
 
-// ────────────────────────────────────────────────────────────────────────────
-// Main orchestrator
-// ────────────────────────────────────────────────────────────────────────────
-
 /**
  * @typedef {Object} MonitorOptions
  * @property {number}  monitor         - Number of game ticks to collect.
@@ -325,10 +322,10 @@ export async function monitorConsole(api, opts) {
   };
   let lastProgressTick = 0;
 
-  // ── Step 1: record starting tick ─────────────────────────────────────────
+  // Step 1: record starting tick
   const { time: startTick } = await api.time(shard);
 
-  // ── Step 2: connect socket + subscribe ───────────────────────────────────
+  // Step 2: connect socket + subscribe
   await api.socket.connect();
   await api.socket.subscribe(subscribePath, (event) => {
     handleConsoleEvent(event, opts, stdoutBuffer, state);
@@ -340,7 +337,7 @@ export async function monitorConsole(api, opts) {
       "...",
   );
 
-  // ── Step 3 & 4: tick-poll loop ───────────────────────────────────────────
+  // Step 3 & 4: tick-poll loop
   try {
     await pollUntilDone(
       api,
@@ -368,13 +365,16 @@ export async function monitorConsole(api, opts) {
       },
     );
   } finally {
-    // ── Step 5: always disconnect cleanly ────────────────────────────────
+    // Step 5: always disconnect cleanly
     api.socket.disconnect();
   }
 
-  // ── Step 6: artifact upload ───────────────────────────────────────────────
+  // Step 6: artifact upload
   if (logToFile && stdoutBuffer.length > 0) {
-    const tmpFile = path.join(os.tmpdir(), "screeps_console_log.txt");
+    const tmpDir = await fs.promises.mkdtemp(
+      path.join(os.tmpdir(), "screeps-monitor-"),
+    );
+    const tmpFile = path.join(tmpDir, "screeps_console_log.txt");
     await writeLogFile(stdoutBuffer, tmpFile);
     await uploadLogArtifact(tmpFile);
   } else if (logToFile) {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "screeps-deploy-action",
   "version": "0.2.0",
-  "description": "Deploys screeps code to the official game or an pirvate server.",
+  "description": "Deploys screeps code to the official game or a private server.",
   "type": "module",
   "main": "index.js",
   "scripts": {