refactor: extract shared path constants to src/paths.mjs

Signed-off-by: leocavalcante <[email protected]>

Author: leocavalcante

postinstall.mjs

@@ -8,15 +8,12 @@
  */
 
 import { copyFileSync, existsSync, mkdirSync, readdirSync } from "node:fs"
-import { homedir } from "node:os"
 import { dirname, join } from "node:path"
-import { fileURLToPath } from "node:url"
 
-const __filename = fileURLToPath(import.meta.url)
-const __dirname = dirname(__filename)
+import { AGENTS_TARGET_DIR, getAgentsSourceDir, getPackageRoot } from "./src/paths.mjs"
 
-const AGENTS_SOURCE_DIR = join(__dirname, "agents")
-const AGENTS_TARGET_DIR = join(homedir(), ".config", "opencode", "agents")
+const packageRoot = getPackageRoot(import.meta.url)
+const AGENTS_SOURCE_DIR = getAgentsSourceDir(packageRoot)
 
 /**
  * Returns a user-friendly error message based on the error code

preuninstall.mjs

@@ -8,15 +8,12 @@
  */
 
 import { existsSync, readdirSync, unlinkSync } from "node:fs"
-import { homedir } from "node:os"
-import { dirname, join } from "node:path"
-import { fileURLToPath } from "node:url"
+import { join } from "node:path"
 
-const __filename = fileURLToPath(import.meta.url)
-const __dirname = dirname(__filename)
+import { AGENTS_TARGET_DIR, getAgentsSourceDir, getPackageRoot } from "./src/paths.mjs"
 
-const AGENTS_SOURCE_DIR = join(__dirname, "agents")
-const AGENTS_TARGET_DIR = join(homedir(), ".config", "opencode", "agents")
+const packageRoot = getPackageRoot(import.meta.url)
+const AGENTS_SOURCE_DIR = getAgentsSourceDir(packageRoot)
 
 function main() {
 	console.log("opencode-plugin-opencoder: Removing agents...")

src/paths.mjs

@@ -0,0 +1,37 @@
+/**
+ * Shared path constants for agent installation/uninstallation scripts.
+ *
+ * This module provides the common directory paths used by postinstall.mjs
+ * and preuninstall.mjs to locate agent files.
+ */
+
+import { homedir } from "node:os"
+import { dirname, join } from "node:path"
+import { fileURLToPath } from "node:url"
+
+/**
+ * Get the package root directory from a module's import.meta.url
+ * @param {string} importMetaUrl - The import.meta.url of the calling module
+ * @returns {string} The package root directory path
+ */
+export function getPackageRoot(importMetaUrl) {
+	const __filename = fileURLToPath(importMetaUrl)
+	const __dirname = dirname(__filename)
+	// Both postinstall.mjs and preuninstall.mjs are in the package root
+	return __dirname
+}
+
+/**
+ * Get the source directory containing agent markdown files.
+ * @param {string} packageRoot - The package root directory
+ * @returns {string} Path to the agents source directory
+ */
+export function getAgentsSourceDir(packageRoot) {
+	return join(packageRoot, "agents")
+}
+
+/**
+ * The target directory where agents are installed.
+ * Located at ~/.config/opencode/agents/
+ */
+export const AGENTS_TARGET_DIR = join(homedir(), ".config", "opencode", "agents")