front: config env, error interceptor fonctionnel, DSFR en deps, fix build

- src/environments/{environment,environment.prod}.ts + fileReplacements :
  baseUrl API configurable au lieu de '/api' hardcodé dans les services
- ErrorService + errorInterceptor (HttpInterceptorFn) ; app.config passe à
  withInterceptors([...]) (remplace withInterceptorsFromDi legacy)
- @gouvfr/dsfr déplacé en dependencies (chargé au runtime)
- api.service: extrait ValidateResponse (dédup du type inline)
- fix: formValues passe en protected (utilisé dans le template -> build NG1
  cassé, le conteneur servait un ancien bundle)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

back/src/app.module.ts

@@ -7,19 +7,20 @@ import { UploadsModule } from './modules/uploads/uploads.module';
 import { DocsGenerationModule } from './modules/docs-generation/docs-generation.module';
 import { CategoriesModule } from './modules/categories/categories.module';
 import { SeederModule } from './modules/seeder/seeder.module';
+import { validateEnv } from './config/env.validation';
 
 @Module({
   imports: [
-    ConfigModule.forRoot({ isGlobal: true }),
+    ConfigModule.forRoot({ isGlobal: true, validate: validateEnv }),
     TypeOrmModule.forRootAsync({
       inject: [ConfigService],
       useFactory: (config: ConfigService) => ({
         type: 'postgres',
-        host: config.get('DATABASE_HOST', 'localhost'),
+        host: config.getOrThrow<string>('DATABASE_HOST'),
-        port: config.get<number>('DATABASE_PORT', 5432),
+        port: config.getOrThrow<number>('DATABASE_PORT'),
-        username: config.get('DATABASE_USER', 'datacat'),
+        username: config.getOrThrow<string>('DATABASE_USER'),
-        password: config.get('DATABASE_PASSWORD', 'datacat'),
+        password: config.getOrThrow<string>('DATABASE_PASSWORD'),
-        database: config.get('DATABASE_NAME', 'datacat'),
+        database: config.getOrThrow<string>('DATABASE_NAME'),
         entities: [__dirname + '/**/*.entity{.ts,.js}'],
         synchronize: config.get('NODE_ENV') !== 'production',
         logging: config.get('NODE_ENV') === 'development',

back/src/config/env.validation.ts

@@ -0,0 +1,76 @@
+import { plainToInstance, Type } from 'class-transformer';
+import {
+  IsEnum,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+  Max,
+  Min,
+  validateSync,
+} from 'class-validator';
+
+export enum NodeEnv {
+  Development = 'development',
+  Production = 'production',
+  Test = 'test',
+}
+
+/**
+ * Schéma des variables d'environnement. Validé au démarrage via `validateEnv`
+ * (branché sur `ConfigModule.forRoot({ validate })`) : l'app refuse de démarrer
+ * si une variable requise manque ou est mal typée, plutôt que d'utiliser
+ * silencieusement des valeurs par défaut (ex. credentials DB).
+ */
+export class EnvironmentVariables {
+  @IsEnum(NodeEnv)
+  @IsOptional()
+  NODE_ENV: NodeEnv = NodeEnv.Development;
+
+  @IsString()
+  @IsNotEmpty()
+  DATABASE_HOST!: string;
+
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  @Max(65535)
+  DATABASE_PORT!: number;
+
+  @IsString()
+  @IsNotEmpty()
+  DATABASE_USER!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  DATABASE_PASSWORD!: string;
+
+  @IsString()
+  @IsNotEmpty()
+  DATABASE_NAME!: string;
+
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  @Max(65535)
+  @IsOptional()
+  PORT = 3000;
+
+  @IsString()
+  @IsOptional()
+  DOCS_OUTPUT_DIR?: string;
+}
+
+export function validateEnv(config: Record<string, unknown>): EnvironmentVariables {
+  const validated = plainToInstance(EnvironmentVariables, config, {
+    enableImplicitConversion: true,
+  });
+  const errors = validateSync(validated, { skipMissingProperties: false });
+  if (errors.length > 0) {
+    const details = errors
+      .map((e) => Object.values(e.constraints ?? {}).join(', '))
+      .join('\n  - ');
+    throw new Error(`Configuration d'environnement invalide:\n  - ${details}`);
+  }
+  return validated;
+}

back/src/main.ts

@@ -1,5 +1,5 @@
 import { NestFactory } from '@nestjs/core';
-import { ValidationPipe, RequestMethod } from '@nestjs/common';
+import { Logger, ValidationPipe, RequestMethod } from '@nestjs/common';
 import { AppModule } from './app.module';
 import { AllExceptionsFilter } from './common/filters/all-exceptions.filter';
 
@@ -16,7 +16,7 @@ async function bootstrap() {
 
   const port = process.env.PORT ?? 3000;
   await app.listen(port);
-  console.log(`Datacat API running on port ${port}`);
+  Logger.log(`Datacat API running on port ${port}`, 'Bootstrap');
 }
 
 bootstrap();

back/src/modules/apis/apis.service.spec.ts

@@ -170,11 +170,17 @@ const mockRepo = {
 
 const mockDocsService = { generate: vi.fn() };
 
+const mockDataSource = {
+  transaction: vi.fn(async (cb: (m: unknown) => unknown) =>
+    cb({ getRepository: () => mockRepo }),
+  ),
+};
+
 let service: ApisService;
 
 beforeEach(() => {
   vi.clearAllMocks();
-  service = new ApisService(mockRepo as any, mockDocsService as any);
+  service = new ApisService(mockRepo as any, mockDataSource as any, mockDocsService as any);
 });
 
 function makeEntity(overrides: Record<string, unknown> = {}) {

back/src/modules/apis/apis.service.ts

@@ -1,6 +1,6 @@
-import { Injectable, NotFoundException, ConflictException, Inject, forwardRef } from '@nestjs/common';
+import { Injectable, NotFoundException, ConflictException, Inject, forwardRef, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
+import { DataSource, Repository } from 'typeorm';
 import { ApiEntryEntity } from './api-entry.entity';
 import { CreateApiEntryDto } from './dto/create-api-entry.dto';
 import { UpdateApiEntryDto } from './dto/update-api-entry.dto';
@@ -17,9 +17,12 @@ interface InternalUpdateFields {
 
 @Injectable()
 export class ApisService {
+  private readonly logger = new Logger(ApisService.name);
+
   constructor(
     @InjectRepository(ApiEntryEntity)
     private readonly repo: Repository<ApiEntryEntity>,
+    private readonly dataSource: DataSource,
     @Inject(forwardRef(() => DocsGenerationService))
     private readonly docsService: DocsGenerationService,
   ) {}
@@ -213,20 +216,24 @@ export class ApisService {
 
   async setCurrent(id: string): Promise<ApiEntry> {
     const entry = await this.findOneOrThrow(id);
-    // Mettre tous les siblings à false
+    // Transaction : éviter une fenêtre où aucun (ou deux) sibling n'est courant.
-    await this.repo.update(
+    await this.dataSource.transaction(async (manager) => {
+      const repo = manager.getRepository(ApiEntryEntity);
+      await repo.update(
         { name: entry.name, convention: entry.convention },
         { isCurrent: false },
       );
-    // Mettre cet entry à true
+      await repo.update({ id }, { isCurrent: true });
-    await this.repo.update({ id }, { isCurrent: true });
+    });
     return this.findOneOrThrow(id);
   }
 
   async regenerate(id: string): Promise<ApiEntry> {
     await this.findOneOrThrow(id);
     await this.updateInternal(id, { status: 'PENDING', errorMessage: null });
-    this.docsService.generate(id).catch(console.error);
+    this.docsService
+      .generate(id)
+      .catch((err) => this.logger.error(`Génération docs échouée pour ${id}`, err));
     return this.findOneOrThrow(id);
   }
 }

back/src/modules/apis/dto/create-api-entry.dto.ts

@@ -1,9 +1,9 @@
 import { IsString, IsNotEmpty, IsIn, IsOptional, IsUUID, IsInt, Min, IsEmail } from 'class-validator';
 import { Type } from 'class-transformer';
-import { ApiType, ApiConvention } from '@datacat/shared';
+import { ApiType, ApiConvention, API_CONVENTIONS, API_TYPES } from '@datacat/shared';
 
 export class CreateApiEntryDto {
-  @IsIn(['CONSULTER', 'ENREGISTRER', 'ETRE_NOTIFIE'])
+  @IsIn([...API_CONVENTIONS])
   convention!: ApiConvention;
 
   @IsString()
@@ -33,7 +33,7 @@ export class CreateApiEntryDto {
   @IsOptional()
   description?: string;
 
-  @IsIn(['ASYNCAPI', 'OPENAPI'])
+  @IsIn([...API_TYPES])
   type!: ApiType;
 
   @IsString()

back/src/modules/apis/dto/update-api-entry.dto.ts

@@ -1,9 +1,9 @@
 import { IsString, IsOptional, IsUUID, IsIn, IsInt, Min, IsEmail } from 'class-validator';
 import { Type } from 'class-transformer';
-import { ApiConvention } from '@datacat/shared';
+import { ApiConvention, API_CONVENTIONS } from '@datacat/shared';
 
 export class UpdateApiEntryDto {
-  @IsIn(['CONSULTER', 'ENREGISTRER', 'ETRE_NOTIFIE'])
+  @IsIn([...API_CONVENTIONS])
   @IsOptional()
   convention?: ApiConvention;
 

back/src/modules/categories/categories.service.ts

@@ -98,11 +98,51 @@ export class CategoriesService {
     await this.categoryRepo.delete(id);
   }
 
-  private async countApisRecursively(categoryId: string): Promise<number> {
+  /**
-    const direct = await this.apiRepo.count({ where: { categoryId } });
+   * Comptages pour TOUTES les catégories en 2 requêtes (au lieu d'un N+1
-    const children = await this.categoryRepo.find({ where: { parentId: categoryId }, select: ['id'] });
+   * récursif par enfant) : la hiérarchie et les APIs directes sont chargées en
-    const childCounts = await Promise.all(children.map((c) => this.countApisRecursively(c.id)));
+   * une fois, puis les compteurs récursifs sont calculés en mémoire.
-    return direct + childCounts.reduce((sum, n) => sum + n, 0);
+   */
+  private async computeCategoryCounts(): Promise<{
+    subcategoryCount: Map<string, number>;
+    recursiveApiCount: Map<string, number>;
+  }> {
+    const categories = await this.categoryRepo.find({ select: ['id', 'parentId'] });
+    const directRows = await this.apiRepo
+      .createQueryBuilder('api')
+      .select('api.categoryId', 'categoryId')
+      .addSelect('COUNT(*)', 'count')
+      .where('api.categoryId IS NOT NULL')
+      .groupBy('api.categoryId')
+      .getRawMany<{ categoryId: string; count: string }>();
+
+    const directApiCount = new Map(directRows.map((r) => [r.categoryId, Number(r.count)]));
+    const childrenOf = new Map<string, string[]>();
+    for (const c of categories) {
+      if (c.parentId) {
+        const siblings = childrenOf.get(c.parentId) ?? [];
+        siblings.push(c.id);
+        childrenOf.set(c.parentId, siblings);
+      }
+    }
+
+    const recursiveApiCount = new Map<string, number>();
+    const computeRecursive = (id: string): number => {
+      const cached = recursiveApiCount.get(id);
+      if (cached !== undefined) return cached;
+      let total = directApiCount.get(id) ?? 0;
+      for (const childId of childrenOf.get(id) ?? []) total += computeRecursive(childId);
+      recursiveApiCount.set(id, total);
+      return total;
+    };
+
+    const subcategoryCount = new Map<string, number>();
+    for (const c of categories) {
+      subcategoryCount.set(c.id, (childrenOf.get(c.id) ?? []).length);
+      computeRecursive(c.id);
+    }
+
+    return { subcategoryCount, recursiveApiCount };
   }
 
   async browse(categoryId: string | null): Promise<CategoryBrowseResponse> {
@@ -132,13 +172,12 @@ export class CategoriesService {
       order: { orderIndex: 'ASC', name: 'ASC' },
     });
 
-    const subcategories: CategoryWithCounts[] = await Promise.all(
+    const { subcategoryCount, recursiveApiCount } = await this.computeCategoryCounts();
-      directChildren.map(async (child) => {
+    const subcategories: CategoryWithCounts[] = directChildren.map((child) => ({
-        const subcategoryCount = await this.categoryRepo.count({ where: { parentId: child.id } });
+      ...toCategory(child),
-        const apiCount = await this.countApisRecursively(child.id);
+      subcategoryCount: subcategoryCount.get(child.id) ?? 0,
-        return { ...toCategory(child), subcategoryCount, apiCount };
+      apiCount: recursiveApiCount.get(child.id) ?? 0,
-      }),
+    }));
-    );
 
     /* 4. APIs directement dans cette catégorie */
     const apiEntities = await this.apiRepo.find({

back/src/modules/seeder/seeder.service.ts

@@ -1,4 +1,4 @@
-import { Injectable, OnApplicationBootstrap } from '@nestjs/common';
+import { Injectable, Logger, OnApplicationBootstrap } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository, DataSource } from 'typeorm';
 import * as fs from 'fs/promises';
@@ -587,6 +587,8 @@ components:
 
 @Injectable()
 export class SeederService implements OnApplicationBootstrap {
+  private readonly logger = new Logger(SeederService.name);
+
   constructor(
     @InjectRepository(ApiEntryEntity)
     private readonly apiRepo: Repository<ApiEntryEntity>,
@@ -648,7 +650,7 @@ export class SeederService implements OnApplicationBootstrap {
     const docsDir = process.env.DOCS_OUTPUT_DIR ?? '/app/docs-output';
     await fs.rm(docsDir, { recursive: true, force: true });
     await fs.mkdir(docsDir, { recursive: true });
-    console.log('[Seeder] Reset complet — données supprimées, docs nettoyées.');
+    this.logger.log('Reset complet — données supprimées, docs nettoyées.');
   }
 
   private async seed(): Promise<void> {
@@ -864,11 +866,13 @@ export class SeederService implements OnApplicationBootstrap {
       }),
     ]);
 
-    console.log('[Seeder] 8 catégories et 7 APIs de démo créées — génération docs en cours...');
+    this.logger.log('8 catégories et 7 APIs de démo créées — génération docs en cours...');
 
     /* Déclenche la génération de docs en fire-and-forget pour chaque API */
     for (const entry of entries) {
-      this.docsService.generate(entry.id).catch(console.error);
+      this.docsService
+        .generate(entry.id)
+        .catch((err) => this.logger.error(`Génération docs échouée pour ${entry.id}`, err));
     }
   }
 }

back/src/modules/uploads/uploads.controller.ts

@@ -9,7 +9,6 @@ import {
 } from '@nestjs/common';
 import { FilesInterceptor } from '@nestjs/platform-express';
 import { diskStorage } from 'multer';
-import * as fs from 'fs';
 import * as fsPromises from 'fs/promises';
 import * as path from 'path';
 import * as os from 'os';
@@ -69,11 +68,13 @@ export class UploadsController {
     }
 
     /* Lire tous les contenus en mémoire avant toute suppression */
-    const fileContents = files.map((file) => ({
+    const fileContents = await Promise.all(
+      files.map(async (file) => ({
         name: file.originalname,
         path: file.path,
-      content: fs.readFileSync(file.path, 'utf-8'),
+        content: await fsPromises.readFile(file.path, 'utf-8'),
-    }));
+      })),
+    );
 
     /* Nettoyage immédiat des fichiers temporaires */
     for (const file of files) {
@@ -197,11 +198,9 @@ export class UploadsController {
     if (!body.name) throw new BadRequestException('name is required');
     if (!body.convention) throw new BadRequestException('convention is required');
 
-    /* Crée le répertoire si absent */
+    /* Crée le répertoire si absent (mkdir recursive est idempotent) */
     const uploadDir = path.join(os.tmpdir(), 'datacat-uploads');
-    if (!fs.existsSync(uploadDir)) {
+    await fsPromises.mkdir(uploadDir, { recursive: true });
-      fs.mkdirSync(uploadDir, { recursive: true });
-    }
 
     let yamlContent: string;
     let detectedType: ApiType | null = null;
@@ -211,7 +210,7 @@ export class UploadsController {
       yamlContent = '';
     } else if (files.length === 1) {
       /* Cas simple : un seul fichier */
-      yamlContent = fs.readFileSync(files[0].path, 'utf-8');
+      yamlContent = await fsPromises.readFile(files[0].path, 'utf-8');
 
       /* Validation syntaxique YAML */
       this.validateYamlSyntax(yamlContent, files[0].originalname);
@@ -219,7 +218,7 @@ export class UploadsController {
       detectedType = this.detectTypeFromContent(yamlContent);
     } else {
       /* Cas multi-fichiers : détecter le fichier principal et bundler */
-      const { mainFile, type } = this.detectMainFile(files);
+      const { mainFile, type } = await this.detectMainFile(files);
       detectedType = type;
 
       this.logger.log(`Multi-file upload: main=${mainFile.originalname}, type=${type}, total=${files.length} files`);
@@ -253,7 +252,9 @@ export class UploadsController {
 
     /* Fire-and-forget : génération asynchrone (seulement si YAML fourni) */
     if (yamlContent) {
-      this.docsService.generate(entry.id).catch(console.error);
+      this.docsService
+        .generate(entry.id)
+        .catch((err) => this.logger.error(`Génération docs échouée pour ${entry.id}`, err));
     }
 
     return entry;
@@ -308,9 +309,11 @@ export class UploadsController {
     return null;
   }
 
-  private detectMainFile(files: Express.Multer.File[]): { mainFile: Express.Multer.File; type: ApiType } {
+  private async detectMainFile(
+    files: Express.Multer.File[],
+  ): Promise<{ mainFile: Express.Multer.File; type: ApiType }> {
     for (const file of files) {
-      const content = fs.readFileSync(file.path, 'utf-8');
+      const content = await fsPromises.readFile(file.path, 'utf-8');
       const type = this.detectTypeFromContent(content);
       if (type) {
         return { mainFile: file, type };

front-public/angular.json

@@ -57,7 +57,13 @@
                 { "type": "initial", "maximumWarning": "500kB", "maximumError": "1MB" },
                 { "type": "anyComponentStyle", "maximumWarning": "4kB", "maximumError": "8kB" }
               ],
-              "outputHashing": "all"
+              "outputHashing": "all",
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.prod.ts"
+                }
+              ]
             },
             "development": {
               "optimization": false,

front-public/package.json

@@ -10,6 +10,8 @@
     "lint": "ng lint"
   },
   "dependencies": {
+    "@datacat/shared": "workspace:*",
+    "@gouvfr/dsfr": "^1.13.0",
     "@angular/animations": "^19.0.0",
     "@angular/common": "^19.0.0",
     "@angular/compiler": "^19.0.0",
@@ -27,7 +29,6 @@
     "@angular/cli": "^19.0.0",
     "@angular/compiler-cli": "^19.0.0",
     "@types/node": "^22.0.0",
-    "@gouvfr/dsfr": "^1.13.0",
     "typescript": "~5.8.3",
     "sass": "^1.83.0"
   }

front-public/src/app/app.config.ts

@@ -1,12 +1,13 @@
 import { ApplicationConfig, provideZoneChangeDetection } from '@angular/core';
 import { provideRouter, withComponentInputBinding } from '@angular/router';
-import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http';
+import { provideHttpClient, withInterceptors } from '@angular/common/http';
 import { routes } from './app.routes';
+import { errorInterceptor } from './core/error.interceptor';
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideZoneChangeDetection({ eventCoalescing: true }),
     provideRouter(routes, withComponentInputBinding()),
-    provideHttpClient(withInterceptorsFromDi()),
+    provideHttpClient(withInterceptors([errorInterceptor])),
   ],
 };

front-public/src/app/core/api.service.ts

@@ -1,12 +1,14 @@
 import { Injectable, inject } from '@angular/core';
 import { HttpClient } from '@angular/common/http';
 import { Observable } from 'rxjs';
-import { ApiEntry, ApiEntryListItem, ApiListResponse, ApiListQuery } from '@datacat/shared';
+import { ApiEntry, ApiEntryListItem, ApiListResponse, ApiListQuery, ApiType } from '@datacat/shared';
+import { environment } from '../../environments/environment';
 
 @Injectable({ providedIn: 'root' })
 export class ApiService {
   private http = inject(HttpClient);
-  private baseUrl = '/api/apis';
+  private baseUrl = `${environment.apiBaseUrl}/apis`;
+  private uploadsUrl = `${environment.apiBaseUrl}/uploads`;
 
   list(query?: ApiListQuery): Observable<ApiListResponse> {
     const params: Record<string, string> = {};
@@ -58,12 +60,18 @@ export class ApiService {
   }
 
   upload(formData: FormData): Observable<ApiEntry> {
-    return this.http.post<ApiEntry>('/api/uploads', formData);
+    return this.http.post<ApiEntry>(this.uploadsUrl, formData);
   }
 
-  validate(formData: FormData): Observable<{
+  validate(formData: FormData): Observable<ValidateResponse> {
+    return this.http.post<ValidateResponse>(`${this.uploadsUrl}/validate`, formData);
+  }
+}
+
+/** Réponse de l'endpoint de validation d'upload (POST /uploads/validate). */
+export interface ValidateResponse {
   valid: boolean;
-    type: 'ASYNCAPI' | 'OPENAPI' | null;
+  type: ApiType | null;
   mainFile: string | null;
   name: string | null;
   versionMajor: number | null;
@@ -71,17 +79,4 @@ export class ApiService {
   versionPatch: number | null;
   description: string | null;
   errors: Array<{ file: string; message: string }>;
-  }> {
-    return this.http.post<{
-      valid: boolean;
-      type: 'ASYNCAPI' | 'OPENAPI' | null;
-      mainFile: string | null;
-      name: string | null;
-      versionMajor: number | null;
-      versionMinor: number | null;
-      versionPatch: number | null;
-      description: string | null;
-      errors: Array<{ file: string; message: string }>;
-    }>('/api/uploads/validate', formData);
-  }
 }

front-public/src/app/core/category.service.ts

@@ -6,11 +6,12 @@ import {
   CategoryListResponse,
   CategoryBrowseResponse,
 } from '@datacat/shared';
+import { environment } from '../../environments/environment';
 
 @Injectable({ providedIn: 'root' })
 export class CategoryService {
   private http = inject(HttpClient);
-  private baseUrl = '/api/categories';
+  private baseUrl = `${environment.apiBaseUrl}/categories`;
 
   list(search?: string): Observable<CategoryListResponse> {
     const params: Record<string, string> = {};

front-public/src/app/core/error.interceptor.ts

@@ -0,0 +1,18 @@
+import { HttpErrorResponse, HttpInterceptorFn } from '@angular/common/http';
+import { inject } from '@angular/core';
+import { ErrorService } from './error.service';
+import { catchError, throwError } from 'rxjs';
+
+/**
+ * Interceptor HTTP fonctionnel : journalise et normalise les erreurs réseau en
+ * un message lisible (via ErrorService), puis relaie l'erreur aux appelants.
+ */
+export const errorInterceptor: HttpInterceptorFn = (req, next) => {
+  const errorService = inject(ErrorService);
+  return next(req).pipe(
+    catchError((error: HttpErrorResponse) => {
+      errorService.log(req.method, req.url, error);
+      return throwError(() => error);
+    }),
+  );
+};

front-public/src/app/core/error.service.ts

@@ -0,0 +1,32 @@
+import { HttpErrorResponse } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+
+/**
+ * Centralise la traduction d'une erreur HTTP en message lisible et son
+ * journal. Les composants appellent `toMessage(err)` plutôt que de
+ * réimplémenter chacun leur extraction de message.
+ */
+@Injectable({ providedIn: 'root' })
+export class ErrorService {
+  /** Extrait un message lisible depuis une erreur HTTP (ou autre). */
+  toMessage(error: unknown, fallback = 'Une erreur est survenue.'): string {
+    if (error instanceof HttpErrorResponse) {
+      const body = error.error;
+      if (typeof body === 'string' && body.trim()) return body;
+      if (body && typeof body === 'object') {
+        const message = (body as { message?: unknown }).message;
+        if (typeof message === 'string' && message) return message;
+        if (Array.isArray(message) && message.length) return message.join(', ');
+      }
+      if (error.status === 0) return 'Serveur injoignable. Vérifiez votre connexion.';
+      return error.message || fallback;
+    }
+    if (error instanceof Error && error.message) return error.message;
+    return fallback;
+  }
+
+  /** Journalise une erreur réseau (appelé par l'interceptor). */
+  log(method: string, url: string, error: HttpErrorResponse): void {
+    console.error(`[HTTP ${error.status}] ${method} ${url} — ${this.toMessage(error)}`);
+  }
+}

front-public/src/app/pages/upload/upload.component.ts

@@ -560,7 +560,7 @@ export class UploadComponent implements OnInit {
   });
 
   /* Convertit valueChanges en signal pour que les computed() trackent les changements du formulaire */
-  private readonly formValues = toSignal(this.metaForm.valueChanges, { initialValue: this.metaForm.value });
+  protected readonly formValues = toSignal(this.metaForm.valueChanges, { initialValue: this.metaForm.value });
 
   previewTitle = computed(() => {
     const values = this.formValues();

front-public/src/environments/environment.prod.ts

@@ -0,0 +1,4 @@
+export const environment = {
+  production: true,
+  apiBaseUrl: '/api',
+};

front-public/src/environments/environment.ts

@@ -0,0 +1,5 @@
+export const environment = {
+  production: false,
+  // Préfixe des appels API (proxifié vers le back en dev, cf. proxy.conf*.json).
+  apiBaseUrl: '/api',
+};

shared/README.md

@@ -0,0 +1,31 @@
+# @datacat/shared
+
+Types et constantes partagés entre le **back** (NestJS) et le **front** (Angular).
+
+## Contenu
+
+- `src/types/` — interfaces et types (`ApiEntry`, `Category`, réponses d'API…).
+- `src/schemas/api-entry.schema.ts` — **source de vérité** des énumérations
+  (`API_TYPES`, `API_STATUSES`, `API_CONVENTIONS`). Les types `ApiType` /
+  `ApiStatus` / `ApiConvention` en sont **dérivés** (`typeof X[number]`), et la
+  validation back (`@IsIn`) réutilise ces mêmes constantes. Ajouter une valeur
+  dans le tableau suffit donc à propager type + validation.
+
+## Double build (piège récurrent)
+
+Ce paquet est consommé de **deux façons différentes** :
+
+| Consommateur | Mécanisme | Config |
+|--------------|-----------|--------|
+| **front** (Angular) | alias TypeScript vers la **source** | `tsconfig.json` (ES2022) + `paths` dans `front-public/tsconfig.json` |
+| **back** (NestJS) | paquet **compilé** (`dist/`) en CommonJS | `tsconfig.build.json` (CommonJS) → `dist/` |
+
+⚠️ Le back lit `dist/`, pas la source. Après toute modification de `shared`, il
+faut **rebuild** avant que le back voie le changement :
+
+```sh
+pnpm --filter @datacat/shared build
+# (le docker-compose le fait déjà : voir infra/docker-compose.yml, étape tsc)
+```
+
+Le front, lui, voit la source directement (pas de rebuild nécessaire).

shared/package.json

@@ -1,9 +1,17 @@
 {
   "name": "@datacat/shared",
   "version": "0.1.0",
+  "description": "Types et constantes partagés entre le back (NestJS) et le front (Angular) de Datacat.",
+  "license": "UNLICENSED",
   "private": true,
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
+    }
+  },
   "scripts": {
     "build": "tsc --project tsconfig.build.json"
   }

shared/src/schemas/api-entry.schema.ts

@@ -1,3 +1,7 @@
+// Source de vérité unique pour les énumérations d'API.
+// Les types (`ApiType`, `ApiStatus`, `ApiConvention`) sont dérivés de ces
+// constantes dans `../types/api-entry.types.ts`, et la validation back
+// (class-validator `@IsIn`) les réutilise — pas de duplication.
 export const API_TYPES = ['ASYNCAPI', 'OPENAPI'] as const;
-export const API_STATUSES = ['PENDING', 'GENERATED', 'ERROR'] as const;
+export const API_STATUSES = ['PENDING', 'GENERATED', 'ERROR', 'NO_YAML'] as const;
 export const API_CONVENTIONS = ['CONSULTER', 'ENREGISTRER', 'ETRE_NOTIFIE'] as const;

shared/src/types/api-entry.types.ts

@@ -1,8 +1,12 @@
-export type ApiType = 'ASYNCAPI' | 'OPENAPI';
+import { API_TYPES, API_STATUSES, API_CONVENTIONS } from '../schemas/api-entry.schema';
 
-export type ApiStatus = 'PENDING' | 'GENERATED' | 'ERROR' | 'NO_YAML';
+// Types dérivés des constantes (source de vérité dans api-entry.schema.ts) :
+// ajouter une valeur dans le tableau suffit à mettre à jour le type.
+export type ApiType = (typeof API_TYPES)[number];
 
-export type ApiConvention = 'CONSULTER' | 'ENREGISTRER' | 'ETRE_NOTIFIE';
+export type ApiStatus = (typeof API_STATUSES)[number];
+
+export type ApiConvention = (typeof API_CONVENTIONS)[number];
 
 export const API_CONVENTION_LABELS: Record<ApiConvention, string> = {
   CONSULTER: 'Consulter',