fix: update project template environment handling to use nullish instead of optional

Author: gupta-piyush19

backend/src/ee/routes/v1/project-template-router.ts

@@ -197,7 +197,7 @@ export const registerProjectTemplateRouter = async (server: FastifyZodProvider)
         description: z.string().max(256).trim().optional().describe(ProjectTemplates.CREATE.description),
         roles: ProjectTemplateRolesSchema.default([]).describe(ProjectTemplates.CREATE.roles),
         type: z.nativeEnum(ProjectType).describe(ProjectTemplates.CREATE.type),
-        environments: ProjectTemplateEnvironmentsSchema.optional().describe(ProjectTemplates.CREATE.environments)
+        environments: ProjectTemplateEnvironmentsSchema.nullish().describe(ProjectTemplates.CREATE.environments)
       }),
       response: {
         200: z.object({
@@ -242,7 +242,7 @@ export const registerProjectTemplateRouter = async (server: FastifyZodProvider)
           .describe(ProjectTemplates.UPDATE.name),
         description: z.string().max(256).trim().optional().describe(ProjectTemplates.UPDATE.description),
         roles: ProjectTemplateRolesSchema.optional().describe(ProjectTemplates.UPDATE.roles),
-        environments: ProjectTemplateEnvironmentsSchema.optional().describe(ProjectTemplates.UPDATE.environments)
+        environments: ProjectTemplateEnvironmentsSchema.nullish().describe(ProjectTemplates.UPDATE.environments)
       }),
       response: {
         200: z.object({

backend/src/ee/services/project-template/project-template-service.ts

@@ -189,11 +189,15 @@ export const projectTemplateServiceFactory = ({
         message: `A project template with the name "${params.name}" already exists.`
       });
 
+    const projectTemplateEnvironments =
+      type === ProjectType.SecretManager && environments === undefined
+        ? ProjectTemplateDefaultEnvironments
+        : environments;
+
     const projectTemplate = await projectTemplateDAL.create({
       ...params,
       roles: JSON.stringify(roles.map((role) => ({ ...role, permissions: packRules(role.permissions) }))),
-      environments:
-        type === ProjectType.SecretManager ? JSON.stringify(environments ?? ProjectTemplateDefaultEnvironments) : null,
+      environments: JSON.stringify(projectTemplateEnvironments),
       orgId: actor.orgId,
       type
     });