Initial commit

src/shell-integration/shellDetection.js

@@ -0,0 +1,75 @@
+import * as os from "os";
+import { execSync } from "child_process";
+
+const shellList = {
+  bash: {
+    name: "Bash",
+    executable: "bash",
+    getStartupFileCommand: "echo ~/.bashrc",
+  },
+  zsh: {
+    name: "Zsh",
+    executable: "zsh",
+    getStartupFileCommand: "echo ${ZDOTDIR:-$HOME}/.zshrc",
+  },
+  fish: {
+    name: "Fish",
+    executable: "fish",
+    getStartupFileCommand: "echo ~/.config/fish/config.fish",
+  },
+  powershell: {
+    name: "PowerShell Core",
+    executable: "pwsh",
+    getStartupFileCommand: "echo $PROFILE",
+  },
+  windowsPowerShell: {
+    name: "Windows PowerShell",
+    executable: "powershell",
+    getStartupFileCommand: "echo $PROFILE",
+  },
+};
+
+export function detectShells() {
+  let availableShells = [];
+
+  for (const shellName of Object.keys(shellList)) {
+    const shell = shellList[shellName];
+
+    if (isShellAvailable(shell)) {
+      const startupFile = getShellStartupFile(shell);
+      availableShells.push({
+        name: shell.name,
+        executable: shell.executable,
+        startupFile: startupFile || null,
+      });
+    }
+  }
+
+  return availableShells;
+}
+
+function isShellAvailable(shell) {
+  try {
+    if (os.platform() === "win32") {
+      execSync(`where ${shell.executable}`, { stdio: "ignore" });
+    } else {
+      execSync(`which ${shell.executable}`, { stdio: "ignore" });
+    }
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function getShellStartupFile(shell) {
+  try {
+    const command = shell.getStartupFileCommand;
+    const output = execSync(command, {
+      encoding: "utf8",
+      shell: shell.executable,
+    }).trim();
+    return output;
+  } catch {
+    return null;
+  }
+}