write jdl blueprint's configs to the right namespace.

generators/jdl/__snapshots__/generator.spec.mts.snap

@@ -57,6 +57,30 @@ exports[`generator - jdl --json-only option for two applications and entity jdl
 }
 `;
 
+exports[`generator - jdl for application jdl with blueprint jdl with blueprint config should write expected files 1`] = `
+{
+  ".yo-rc.json": {
+    "contents": "{
+  "generator-jhipster": {
+    "applicationIndex": 0,
+    "baseName": "jhipster",
+    "blueprints": [
+      {
+        "name": "generator-jhipster-foo"
+      }
+    ],
+    "entities": []
+  },
+  "generator-jhipster-foo": {
+    "config": "bar"
+  }
+}
+",
+    "stateCleared": "modified",
+  },
+}
+`;
+
 exports[`generator - jdl for application jdl with valid jdl should write expected files 1`] = `
 {
   ".yo-rc.json": {

generators/jdl/generator.mts

@@ -33,6 +33,7 @@ import { ApplicationWithEntities, createImporterFromContent } from '../../jdl/jd
 import { GENERATOR_JHIPSTER, JHIPSTER_CONFIG_DIR } from '../generator-constants.mjs';
 import statistics from '../statistics.mjs';
 import { addApplicationIndex, allNewApplications, customizeForMicroservices } from './internal/index.mjs';
+import { mergeYoRcContent, splitBlueprintConfigs } from './internal/config.mjs';
 
 const { upperFirst } = _;
 
@@ -307,10 +308,8 @@ export default class JdlGenerator extends BaseGenerator {
       if (config) {
         const configFile = this.destinationPath(`${appPath}.yo-rc.json`);
         const oldConfig: any = fs.readJSON(configFile, {});
-        fs.writeJSON(configFile, {
-          ...oldConfig,
-          [GENERATOR_JHIPSTER]: { ...oldConfig[GENERATOR_JHIPSTER], ...config },
-        });
+
+        fs.writeJSON(configFile, mergeYoRcContent(oldConfig, splitBlueprintConfigs(config)));
       }
       for (const entity of entities) {
         const configFile = this.destinationPath(`${appPath}${JHIPSTER_CONFIG_DIR}/${upperFirst(entity.name)}.json`);

generators/jdl/generator.spec.mts

@@ -155,6 +155,21 @@ describe(`generator - ${generator}`, () => {
         expect(runResult.getSnapshot()).toMatchSnapshot();
       });
     });
+
+    describe('with blueprint jdl with blueprint config', () => {
+      let runResult: RunResult;
+
+      before(async () => {
+        runResult = await helpers.runJHipster(GENERATOR_JDL).withOptions({
+          jsonOnly: true,
+          inline: 'application { config { blueprints [foo] foo:config bar } }',
+        });
+      });
+
+      it('should write expected files', () => {
+        expect(runResult.getSnapshot()).toMatchSnapshot();
+      });
+    });
   });
 
   describe('for one application and entity jdl', () => {

generators/jdl/internal/config.mts

@@ -0,0 +1,25 @@
+import { GENERATOR_JHIPSTER } from '../../generator-constants.mjs';
+
+export const splitBlueprintConfigs = (config: Record<string, any>) => {
+  const byNamespaces: Record<string, Record<string, any>> = { [GENERATOR_JHIPSTER]: {} };
+  Object.entries(config).forEach(([name, value]: [string, any]) => {
+    if (name.includes(':')) {
+      const [ns, configName] = name.split(':');
+      if (!byNamespaces[ns]) {
+        byNamespaces[ns] = {};
+      }
+      byNamespaces[ns][configName] = value;
+    } else {
+      byNamespaces[GENERATOR_JHIPSTER][name] = value;
+    }
+  });
+  return byNamespaces;
+};
+
+export const mergeYoRcContent = (oldConfig: Record<string, Record<string, any>>, newConfig: Record<string, Record<string, any>>) => {
+  const merged: Record<string, Record<string, any>> = {};
+  for (const ns of new Set([...Object.keys(oldConfig), ...Object.keys(newConfig)])) {
+    merged[ns] = { ...oldConfig[ns], ...newConfig[ns] };
+  }
+  return merged;
+};