feat: improve doctor's checking of the shell plugins

src/ui/ui-doctor.ts

@@ -2,11 +2,12 @@
 // Licensed under the MIT License.
 
 import chalk from "chalk";
-import { checkLegacyConfigs, checkShellConfigs } from "../utils/shell.js";
+import { checkLegacyConfigs, checkShellConfigPlugin, checkShellConfigs } from "../utils/shell.js";
 
 export const render = async () => {
   let errors = 0;
   errors += await renderLegacyConfigIssues();
+  errors += await renderShellPluginIssues();
   errors += renderShellConfigIssues();
 
   process.exit(errors);
@@ -44,3 +45,31 @@ const renderShellConfigIssues = (): number => {
   }
   return 0;
 };
+
+const renderShellPluginIssues = async (): Promise<number> => {
+  const { shellsWithoutPlugin, shellsWithBadPlugin } = await checkShellConfigPlugin();
+  if (shellsWithoutPlugin.length == 0) {
+    process.stdout.write(chalk.green("✓") + " all shells have plugins\n");
+  } else {
+    process.stderr.write(chalk.red("•") + " the following shells do not have the plugin installed:\n");
+    shellsWithoutPlugin.forEach((shell) => {
+      process.stderr.write(chalk.red("  - ") + shell + "\n");
+    });
+    process.stderr.write(chalk.yellow("  review the README to generate the missing shell plugins, this warning can be ignored if you prefer manual startup\n"));
+  }
+
+  if (shellsWithBadPlugin.length == 0) {
+    process.stdout.write(chalk.green("✓") + " all shells have correct plugins\n");
+  } else {
+    process.stderr.write(chalk.red("•") + " the following shells have plugins incorrectly installed:\n");
+    shellsWithBadPlugin.forEach((shell) => {
+      process.stderr.write(chalk.red("  - ") + shell + "\n");
+    });
+    process.stderr.write(chalk.yellow("  remove and regenerate the plugins according to the README, only whitespace can be after the shell plugins\n"));
+  }
+
+  if (shellsWithoutPlugin.length > 0 || shellsWithBadPlugin.length > 0) {
+    return 1;
+  }
+  return 0;
+};

src/utils/shell.ts

@@ -84,6 +84,27 @@ export const checkLegacyConfigs = async (): Promise<Shell[]> => {
   return shellsWithLegacyConfig;
 };
 
+export const checkShellConfigPlugin = async () => {
+  const shellsWithoutPlugin: Shell[] = [];
+  const shellsWithBadPlugin: Shell[] = [];
+  for (const shell of supportedShells) {
+    const profilePath = await getProfilePath(shell);
+    if (profilePath != null && fs.existsSync(profilePath)) {
+      const profile = await fsAsync.readFile(profilePath, "utf8");
+
+      const profileContainsSource = profile.includes(getShellSourceCommand(shell));
+      const profileEndsWithSource = profile.trimEnd().endsWith(getShellSourceCommand(shell));
+
+      if (!profileContainsSource) {
+        shellsWithoutPlugin.push(shell);
+      } else if (!profileEndsWithSource) {
+        shellsWithBadPlugin.push(shell);
+      }
+    }
+  }
+  return { shellsWithoutPlugin, shellsWithBadPlugin };
+};
+
 const getProfilePath = async (shell: Shell): Promise<string | undefined> => {
   switch (shell) {
     case Shell.Bash: