From 992d0c3cc4f99223fbc335015338bb88e6b2d65b Mon Sep 17 00:00:00 2001
From: wendrul <dethomassin.etienne@gmail.com>
Date: Tue, 10 Mar 2026 18:24:04 +0100
Subject: [PATCH] wanr and fail if clibhaviour is higher than the current cli
 supports

---
 cli/src/commands/sync/sync.ts |  8 +-------
 cli/src/core/conf.ts          | 18 ++++++++++++++++++
 cli/test/cli_behavior.test.ts |  2 +-
 3 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/cli/src/commands/sync/sync.ts b/cli/src/commands/sync/sync.ts
index 358d08f9c7..79f39047f7 100644
--- a/cli/src/commands/sync/sync.ts
+++ b/cli/src/commands/sync/sync.ts
@@ -45,6 +45,7 @@ import {
 import {
   getEffectiveSettings,
   mergeConfigWithConfigFile,
+  parseCliBehavior,
   SyncOptions,
   validateBranchConfiguration,
 } from "../../core/conf.ts";
@@ -104,13 +105,6 @@ import {
   getNonDottedPaths,
 } from "../../utils/resource_folders.ts";
 
-// Parse cliBehavior version string (e.g. "v1", "v2") into a number. Returns 0 if absent/invalid.
-export function parseCliBehavior(value?: string): number {
-  if (!value) return 0;
-  const match = value.match(/^v(\d+)$/);
-  return match ? parseInt(match[1], 10) : 0;
-}
-
 // Merge CLI options with effective settings, preserving CLI flags as overrides
 function mergeCliWithEffectiveOptions<
   T extends GlobalOptions & SyncOptions & { repository?: string },
diff --git a/cli/src/core/conf.ts b/cli/src/core/conf.ts
index 9177209b0d..5bd916cc31 100644
--- a/cli/src/core/conf.ts
+++ b/cli/src/core/conf.ts
@@ -14,6 +14,15 @@ import { execSync } from "node:child_process";
 import { setNonDottedPaths } from "../utils/resource_folders.ts";
 import type { PermissionedAsRule } from "./permissioned_as.ts";
 
+export const SUPPORTED_CLI_BEHAVIOR_VERSION = 1;
+
+// Parse cliBehavior version string (e.g. "v1", "v2") into a number. Returns 0 if absent/invalid.
+export function parseCliBehavior(value?: string): number {
+  if (!value) return 0;
+  const match = value.match(/^v(\d+)$/);
+  return match ? parseInt(match[1], 10) : 0;
+}
+
 export let showDiffs = false;
 export function setShowDiffs(value: boolean) {
   showDiffs = value;
@@ -294,6 +303,15 @@ export async function readConfigFile(): Promise<SyncOptions> {
     // Initialize global nonDottedPaths setting from config
     setNonDottedPaths(conf?.nonDottedPaths ?? false);
 
+    // Exit if the config specifies a cliBehavior version higher than what this CLI supports
+    const cliBehaviorVersion = parseCliBehavior(conf?.cliBehavior);
+    if (cliBehaviorVersion > SUPPORTED_CLI_BEHAVIOR_VERSION) {
+      log.error(
+        `Your wmill.yaml specifies cliBehavior: ${conf!.cliBehavior}, but this CLI only supports up to v${SUPPORTED_CLI_BEHAVIOR_VERSION}. Run 'wmill upgrade' to update.`
+      );
+      process.exit(1);
+    }
+
     return typeof conf == "object" ? conf : ({} as SyncOptions);
   } catch (e) {
     if (
diff --git a/cli/test/cli_behavior.test.ts b/cli/test/cli_behavior.test.ts
index 8ddf254f78..2b4c0802ef 100644
--- a/cli/test/cli_behavior.test.ts
+++ b/cli/test/cli_behavior.test.ts
@@ -1,5 +1,5 @@
 import { expect, test, describe } from "bun:test";
-import { parseCliBehavior } from "../src/commands/sync/sync.ts";
+import { parseCliBehavior } from "../src/core/conf.ts";
 
 describe("parseCliBehavior", () => {
   test("parses v1 to 1", () => {