2 files changed, 80 insertions, 0 deletions
diff --git a/packages/cli/src/config/args.ts b/packages/cli/src/config/args.ts
new file mode 100644
index 00000000..45f654db
--- /dev/null
+++ b/packages/cli/src/config/args.ts
@@ -0,0 +1,34 @@
+import yargs from 'yargs/yargs';
+import { hideBin } from 'yargs/helpers';
+
+export interface CliArgs {
+  target_dir: string | undefined;
+  _: (string | number)[]; // Captures positional arguments
+  // Add other expected args here if needed
+  // e.g., verbose?: boolean;
+}
+
+export async function parseArguments(): Promise<CliArgs> {
+  const argv = await yargs(hideBin(process.argv))
+    .option('target_dir', {
+      alias: 'd',
+      type: 'string',
+      description:
+        'The target directory for Gemini operations. Defaults to the current working directory.',
+    })
+    .help()
+    .alias('h', 'help')
+    .strict() // Keep strict mode to error on unknown options
+    .parseAsync();
+
+  // Handle warnings for extra arguments here
+  if (argv._ && argv._.length > 0) {
+    console.warn(
+      `Warning: Additional arguments provided (${argv._.join(', ')}), but will be ignored.`
+    );
+  }
+
+  // Cast to the interface to ensure the structure aligns with expectations
+  // Use `unknown` first for safer casting if types might not perfectly match
+  return argv as unknown as CliArgs;
+}
+\ No newline at end of file
diff --git a/packages/cli/src/config/env.ts b/packages/cli/src/config/env.ts
new file mode 100644
index 00000000..8a15fd6e
--- /dev/null
+++ b/packages/cli/src/config/env.ts
@@ -0,0 +1,46 @@
+import * as dotenv from 'dotenv';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import process from 'node:process';
+
+function findEnvFile(startDir: string): string | null {
+    // Start search from the provided directory (e.g., current working directory)
+    let currentDir = path.resolve(startDir); // Ensure absolute path
+    while (true) {
+        const envPath = path.join(currentDir, '.env');
+        if (fs.existsSync(envPath)) {
+            return envPath;
+        }
+
+        const parentDir = path.dirname(currentDir);
+        if (parentDir === currentDir || !parentDir) {
+            return null;
+        }
+        currentDir = parentDir;
+    }
+}
+
+export function loadEnvironment(): void {
+    // Start searching from the current working directory by default
+    const envFilePath = findEnvFile(process.cwd());
+
+    if (!envFilePath) {
+        return;
+    }
+
+    dotenv.config({ path: envFilePath });
+
+    if (!process.env.GEMINI_API_KEY) {
+        console.error('Error: GEMINI_API_KEY environment variable is not set in the loaded .env file.');
+        process.exit(1);
+    }
+}
+
+export function getApiKey(): string {
+    loadEnvironment();
+    const apiKey = process.env.GEMINI_API_KEY;
+    if (!apiKey) {
+        throw new Error('GEMINI_API_KEY is missing. Ensure loadEnvironment() was called successfully.');
+    }
+    return apiKey;
+}
+\ No newline at end of file