update to have more sophisticated method of warning msg

Author: eleanorjboyd

src/features/envCommands.ts

@@ -3,6 +3,7 @@ import {
     CreateEnvironmentOptions,
     PythonEnvironment,
     PythonEnvironmentApi,
+    PythonProject,
     PythonProjectCreator,
     PythonProjectCreatorOptions,
 } from '../api';
@@ -212,8 +213,8 @@ export async function setEnvironmentCommand(
             if (projects.length > 0) {
                 const selected = await pickProjectMany(projects);
                 if (selected && selected.length > 0) {
-                    const uris = selected.map((p) => p.uri);
-                    await em.setEnvironments(uris, view.environment);
+                    // Check if the selected environment is already the current one for each project
+                    await setEnvironmentForProjects(selected, context.environment, em);
                 }
             } else {
                 await em.setEnvironments('global', view.environment);
@@ -271,23 +272,47 @@ export async function setEnvironmentCommand(
         });
 
         if (selected) {
-            // Check if the selected environment is already the current one
-            // Only show notification when we have exactly one project and it already has this environment
-            if (uris.length === 1) {
-                const currentEnv = await em.getEnvironment(uris[0]);
-                if (currentEnv?.envId.id === selected.envId.id) {
-                    // The environment is already selected for this project
-                    showInformationMessage('This environment is already selected for the workspace.');
-                    return;
-                }
-            }
-            await em.setEnvironments(uris, selected);
+            // Use the same logic for checking already set environments
+            await setEnvironmentForProjects(projects, selected, em);
         }
     } else {
         traceError(`Invalid context for setting environment command: ${context}`);
         showErrorMessage('Invalid context for setting environment');
     }
 }
+/**
+ * Sets the environment for the given projects, showing a warning for those already set.
+ * @param selectedProjects Array of project items (with .uri and .name)
+ * @param environment The environment to set
+ * @param em The EnvironmentManagers instance
+ */
+async function setEnvironmentForProjects(
+    selectedProjects: PythonProject[],
+    environment: PythonEnvironment,
+    em: EnvironmentManagers,
+) {
+    let alreadySet: PythonProject[] = [];
+    for (const p of selectedProjects) {
+        const currentEnv = await em.getEnvironment(p.uri);
+        if (currentEnv?.envId.id === environment.envId.id) {
+            alreadySet.push(p);
+        }
+    }
+    if (alreadySet.length > 0) {
+        const env = alreadySet.length > 1 ? 'environments' : 'environment';
+        showInformationMessage(
+            `"${environment.name}" is already selected as the ${env} for: ${alreadySet
+                .map((p) => `"${p.name}"`)
+                .join(', ')}`,
+        );
+    }
+    const toSet: PythonProject[] = selectedProjects.filter((p) => !alreadySet.includes(p));
+    const uris = toSet.map((p) => p.uri);
+    if (uris.length === 0) {
+        return;
+    }
+    await em.setEnvironments(uris, environment);
+}
 
 export async function resetEnvironmentCommand(
     context: unknown,