Merge pull request #2 from fpr1m3/pai-history-path-env

Author: fpr1m3

src/lib/paths.ts

@@ -1,7 +1,38 @@
-import { join } from 'path';
+import { join, normalize } from 'path';
+import { homedir } from 'os';
+import { existsSync, mkdirSync } from 'fs';
+
+function resolvePath(path: string): string {
+  // Handle ~ expansion
+  if (path.startsWith('~')) {
+    path = join(homedir(), path.slice(1));
+  }
+
+  // Handle environment variable expansion ($VAR or ${VAR})
+  path = path.replace(/\$([a-zA-Z_][a-zA-Z0-9_]*)|\$\{([a-zA-Z_][a-zA-Z0-9_]*)\}/g, (_, p1, p2) => {
+    const varName = p1 || p2;
+    return process.env[varName] || '';
+  });
+
+  return normalize(path);
+}
 
 export function getHistoryDir(baseDir: string): string {
-  return join(baseDir, '.opencode', 'history');
+  const envPath = process.env.PAI_HISTORY_PATH;
+  const defaultPath = '~/.config/opencode/history';
+  const resolvedPath = resolvePath(envPath || defaultPath);
+
+  if (!existsSync(resolvedPath)) {
+    try {
+        mkdirSync(resolvedPath, { recursive: true });
+    } catch (error) {
+        // If mkdir fails (e.g. permissions), we log it but return the path anyway
+        // The consumer will likely fail later, which is appropriate
+        console.error(`Failed to create history directory at ${resolvedPath}:`, error);
+    }
+  }
+
+  return resolvedPath;
 }
 
 export function getRawOutputsDir(baseDir: string): string {
@@ -14,4 +45,4 @@ export function getSessionsDir(baseDir: string): string {
 
 export function getSkillsDir(baseDir: string): string {
   return join(baseDir, '.opencode', 'skills');
-}
+}