Add automated checks for desktop app runtime #233

- Add automation script for building, packaging, installing, executing
  and verifying Electron distrubtions across macOS, Ubuntu and Windows.
- Add GitHub workflow to run the script to test distributions using the
  script.
- Update README with new workflow status badge.
- Add application initialization log to desktop applications to be able
  to test against crashes before application initialization.

scripts/check-desktop-runtime-errors/app/app-logs.js

@@ -0,0 +1,55 @@
+import { unlink, readFile } from 'fs/promises';
+import { join } from 'path';
+import { log, die, LOG_LEVELS } from '../utils/log.js';
+import { exists } from '../utils/io.js';
+import { SUPPORTED_PLATFORMS, CURRENT_PLATFORM } from '../utils/platform.js';
+import { getAppName } from '../utils/npm.js';
+
+export async function clearAppLogFile(projectDir) {
+  if (!projectDir) { throw new Error('missing project directory'); }
+  const logPath = await determineLogPath(projectDir);
+  if (!logPath || !await exists(logPath)) {
+    log(`Skipping clearing logs, log file does not exist: ${logPath}.`);
+    return;
+  }
+  try {
+    await unlink(logPath);
+    log(`Successfully cleared the log file at: ${logPath}.`);
+  } catch (error) {
+    die(`Failed to clear the log file at: ${logPath}. Reason: ${error}`);
+  }
+}
+
+export async function readAppLogFile(projectDir) {
+  if (!projectDir) { throw new Error('missing project directory'); }
+  const logPath = await determineLogPath(projectDir);
+  if (!logPath || !await exists(logPath)) {
+    log(`No log file at: ${logPath}`, LOG_LEVELS.WARN);
+    return undefined;
+  }
+  const logContent = await readLogFile(logPath);
+  return logContent;
+}
+
+async function determineLogPath(projectDir) {
+  if (!projectDir) { throw new Error('missing project directory'); }
+  const appName = await getAppName(projectDir);
+  if (!appName) {
+    die('App name not found.');
+  }
+  const logFilePaths = {
+    [SUPPORTED_PLATFORMS.MAC]: () => join(process.env.HOME, 'Library', 'Logs', appName, 'main.log'),
+    [SUPPORTED_PLATFORMS.LINUX]: () => join(process.env.HOME, '.config', appName, 'logs', 'main.log'),
+    [SUPPORTED_PLATFORMS.WINDOWS]: () => join(process.env.USERPROFILE, 'AppData', 'Roaming', appName, 'logs', 'main.log'),
+  };
+  const logFilePath = logFilePaths[CURRENT_PLATFORM]?.();
+  if (!logFilePath) {
+    log(`Cannot determine log path, unsupported OS: ${CURRENT_PLATFORM}`, LOG_LEVELS.WARN);
+  }
+  return logFilePath;
+}
+
+async function readLogFile(logFilePath) {
+  const content = await readFile(logFilePath, 'utf-8');
+  return content?.trim().length > 0 ? content : undefined;
+}