ci: Bump version to 0.2.33 [skip ci]

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "flyer-crawler",
-  "version": "0.2.28",
+  "version": "0.2.33",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "flyer-crawler",
-      "version": "0.2.28",
+      "version": "0.2.33",
       "dependencies": {
         "@bull-board/api": "^6.14.2",
         "@bull-board/express": "^6.14.2",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "flyer-crawler",
   "private": true,
-  "version": "0.2.28",
+  "version": "0.2.33",
   "type": "module",
   "scripts": {
     "dev": "concurrently \"npm:start:dev\" \"vite\"",

src/routes/system.routes.test.ts

@@ -1,51 +1,15 @@
 // src/routes/system.routes.test.ts
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import supertest from 'supertest';
-import { exec, type ExecException, type ExecOptions } from 'child_process';
-import { geocodingService } from '../services/geocodingService.server';
 import { createTestApp } from '../tests/utils/createTestApp';
 
-// FIX: Mock util.promisify to correctly handle child_process.exec's (err, stdout, stderr) signature.
-// This is required because the standard util.promisify relies on internal symbols on the real exec function,
-// which are missing on our Vitest mock. Without this, promisify(mockExec) drops the stdout/stderr arguments.
-vi.mock('util', async (importOriginal) => {
-  const actual = await importOriginal<typeof import('util')>();
-  return {
-    ...actual,
-    default: actual,
-    promisify: (fn: Function) => {
-      return (...args: any[]) => {
-        return new Promise((resolve, reject) => {
-          fn(...args, (err: Error | null, stdout: unknown, stderr: unknown) => {
-            if (err) {
-              // Attach stdout/stderr to the error object to mimic child_process.exec behavior
-              Object.assign(err, { stdout, stderr });
-              reject(err);
-            } else {
-              resolve({ stdout, stderr });
-            }
-          });
-        });
-      };
-    },
-  };
-});
-
-// FIX: Use the simple factory pattern for child_process to avoid default export issues
-vi.mock('child_process', () => {
-  const mockExec = vi.fn((command, callback) => {
-    if (typeof callback === 'function') {
-      callback(null, 'PM2 OK', '');
-    }
-    return { unref: () => {} };
-  });
-
-  return {
-    default: { exec: mockExec },
-    exec: mockExec,
-  };
-});
-
+// 1. Mock the Service Layer
+// This decouples the route test from the service's implementation details.
+vi.mock('../services/systemService', () => ({
+  systemService: {
+    getPm2Status: vi.fn(),
+  },
+}));
 // 2. Mock Geocoding
 vi.mock('../services/geocodingService.server', () => ({
   geocodingService: {
@@ -65,46 +29,24 @@ vi.mock('../services/logger.server', () => ({
 }));
 
 // Import the router AFTER all mocks are defined to ensure systemService picks up the mocked util.promisify
+import { systemService } from '../services/systemService';
 import systemRouter from './system.routes';
+import { geocodingService } from '../services/geocodingService.server';
 
 describe('System Routes (/api/system)', () => {
   const app = createTestApp({ router: systemRouter, basePath: '/api/system' });
 
   beforeEach(() => {
-    // We cast here to get type-safe access to mock functions like .mockImplementation
     vi.clearAllMocks();
   });
 
   describe('GET /pm2-status', () => {
     it('should return success: true when pm2 process is online', async () => {
       // Arrange: Simulate a successful `pm2 describe` output for an online process.
-      const pm2OnlineOutput = `
-        ┌─ PM2 info ────────────────┐
-        │ status    │ online    │
-        └───────────┴───────────┘
-      `;
-
-      type ExecCallback = (error: ExecException | null, stdout: string, stderr: string) => void;
-
-      // A robust mock for `exec` that handles its multiple overloads.
-      // This avoids the complex and error-prone `...args` signature.
-      vi.mocked(exec).mockImplementation(
-        (
-          command: string,
-          options?: ExecOptions | ExecCallback | null,
-          callback?: ExecCallback | null,
-        ) => {
-          // The actual callback can be the second or third argument.
-          const actualCallback = (
-            typeof options === 'function' ? options : callback
-          ) as ExecCallback;
-          if (actualCallback) {
-            actualCallback(null, pm2OnlineOutput, '');
-          }
-          // Return a minimal object that satisfies the ChildProcess type for .unref()
-          return { unref: () => {} } as ReturnType<typeof exec>;
-        },
-      );
+      vi.mocked(systemService.getPm2Status).mockResolvedValue({
+        success: true,
+        message: 'Application is online and running under PM2.',
+      });
 
       // Act
       const response = await supertest(app).get('/api/system/pm2-status');
@@ -118,28 +60,10 @@ describe('System Routes (/api/system)', () => {
     });
 
     it('should return success: false when pm2 process is stopped or errored', async () => {
-      const pm2StoppedOutput = `│ status    │ stopped   │`;
-
-      vi.mocked(exec).mockImplementation(
-        (
-          command: string,
-          options?:
-            | ExecOptions
-            | ((error: ExecException | null, stdout: string, stderr: string) => void)
-            | null,
-          callback?: ((error: ExecException | null, stdout: string, stderr: string) => void) | null,
-        ) => {
-          const actualCallback = (typeof options === 'function' ? options : callback) as (
-            error: ExecException | null,
-            stdout: string,
-            stderr: string,
-          ) => void;
-          if (actualCallback) {
-            actualCallback(null, pm2StoppedOutput, '');
-          }
-          return { unref: () => {} } as ReturnType<typeof exec>;
-        },
-      );
+      vi.mocked(systemService.getPm2Status).mockResolvedValue({
+        success: false,
+        message: 'Application process exists but is not online.',
+      });
 
       const response = await supertest(app).get('/api/system/pm2-status');
 
@@ -150,33 +74,10 @@ describe('System Routes (/api/system)', () => {
 
     it('should return success: false when pm2 process does not exist', async () => {
       // Arrange: Simulate `pm2 describe` failing because the process isn't found.
-      const processNotFoundOutput =
-        "[PM2][ERROR] Process or Namespace flyer-crawler-api doesn't exist";
-      const processNotFoundError = new Error(
-        'Command failed: pm2 describe flyer-crawler-api',
-      ) as ExecException;
-      processNotFoundError.code = 1;
-
-      vi.mocked(exec).mockImplementation(
-        (
-          command: string,
-          options?:
-            | ExecOptions
-            | ((error: ExecException | null, stdout: string, stderr: string) => void)
-            | null,
-          callback?: ((error: ExecException | null, stdout: string, stderr: string) => void) | null,
-        ) => {
-          const actualCallback = (typeof options === 'function' ? options : callback) as (
-            error: ExecException | null,
-            stdout: string,
-            stderr: string,
-          ) => void;
-          if (actualCallback) {
-            actualCallback(processNotFoundError, processNotFoundOutput, '');
-          }
-          return { unref: () => {} } as ReturnType<typeof exec>;
-        },
-      );
+      vi.mocked(systemService.getPm2Status).mockResolvedValue({
+        success: false,
+        message: 'Application process is not running under PM2.',
+      });
 
       // Act
       const response = await supertest(app).get('/api/system/pm2-status');
@@ -191,55 +92,17 @@ describe('System Routes (/api/system)', () => {
 
     it('should return 500 if pm2 command produces stderr output', async () => {
       // Arrange: Simulate a successful exit code but with content in stderr.
-      const stderrOutput = 'A non-fatal warning occurred.';
-
-      vi.mocked(exec).mockImplementation(
-        (
-          command: string,
-          options?:
-            | ExecOptions
-            | ((error: ExecException | null, stdout: string, stderr: string) => void)
-            | null,
-          callback?: ((error: ExecException | null, stdout: string, stderr: string) => void) | null,
-        ) => {
-          const actualCallback = (typeof options === 'function' ? options : callback) as (
-            error: ExecException | null,
-            stdout: string,
-            stderr: string,
-          ) => void;
-          if (actualCallback) {
-            actualCallback(null, 'Some stdout', stderrOutput);
-          }
-          return { unref: () => {} } as ReturnType<typeof exec>;
-        },
-      );
+      const serviceError = new Error('PM2 command produced an error: A non-fatal warning occurred.');
+      vi.mocked(systemService.getPm2Status).mockRejectedValue(serviceError);
 
       const response = await supertest(app).get('/api/system/pm2-status');
       expect(response.status).toBe(500);
-      expect(response.body.message).toBe(`PM2 command produced an error: ${stderrOutput}`);
+      expect(response.body.message).toBe(serviceError.message);
     });
 
     it('should return 500 on a generic exec error', async () => {
-      vi.mocked(exec).mockImplementation(
-        (
-          command: string,
-          options?:
-            | ExecOptions
-            | ((error: ExecException | null, stdout: string, stderr: string) => void)
-            | null,
-          callback?: ((error: ExecException | null, stdout: string, stderr: string) => void) | null,
-        ) => {
-          const actualCallback = (typeof options === 'function' ? options : callback) as (
-            error: ExecException | null,
-            stdout: string,
-            stderr: string,
-          ) => void;
-          if (actualCallback) {
-            actualCallback(new Error('System error') as ExecException, '', 'stderr output');
-          }
-          return { unref: () => {} } as ReturnType<typeof exec>;
-        },
-      );
+      const serviceError = new Error('System error');
+      vi.mocked(systemService.getPm2Status).mockRejectedValue(serviceError);
 
       // Act
       const response = await supertest(app).get('/api/system/pm2-status');

src/services/analyticsService.server.test.ts

@@ -127,12 +127,18 @@ describe('AnalyticsService', () => {
           throw new Error('Processing failed');
         }); // "Successfully generated..."
 
+      // Get the promise from the service method.
       const promise = service.processWeeklyReportJob(job);
 
+      // Advance timers to trigger the part of the code that throws.
       await vi.advanceTimersByTimeAsync(30000);
 
+      // Now, assert that the promise rejects as expected.
+      // This structure avoids an unhandled promise rejection that can occur
+      // when awaiting a rejecting promise inside a helper function without a try/catch.
       await expect(promise).rejects.toThrow('Processing failed');
 
+      // Verify the side effect (error logging) after the rejection is confirmed.
       expect(mockLoggerInstance.error).toHaveBeenCalledWith(
         expect.objectContaining({
           err: expect.any(Error),

src/services/authService.test.ts

@@ -1,70 +1,17 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-
-// Set environment variables before importing the service
-process.env.JWT_SECRET = 'test-secret';
-process.env.FRONTEND_URL = 'http://localhost:3000';
-
-import { authService } from './authService';
-import * as bcrypt from 'bcrypt';
-import jwt from 'jsonwebtoken';
-import crypto from 'crypto';
-import { userRepo, adminRepo } from './db/index.db';
-import { UniqueConstraintError } from './db/errors.db';
-import { logger } from './logger.server';
-import { sendPasswordResetEmail } from './emailService.server';
 import type { UserProfile } from '../types';
-
-// Mock dependencies
-vi.mock('bcrypt');
-vi.mock('jsonwebtoken');
-vi.mock('crypto', () => ({
-  default: {
-    randomBytes: vi.fn().mockReturnValue({
-      toString: vi.fn().mockReturnValue('mocked-random-string'),
-    }),
-  },
-}));
-
-vi.mock('./db/index.db', () => ({
-  userRepo: {
-    createUser: vi.fn(),
-    saveRefreshToken: vi.fn(),
-    findUserByEmail: vi.fn(),
-    createPasswordResetToken: vi.fn(),
-    getValidResetTokens: vi.fn(),
-    updateUserPassword: vi.fn(),
-    deleteResetToken: vi.fn(),
-    findUserByRefreshToken: vi.fn(),
-    findUserProfileById: vi.fn(),
-    deleteRefreshToken: vi.fn(),
-  },
-  adminRepo: {
-    logActivity: vi.fn(),
-  },
-}));
-
-vi.mock('./logger.server', () => ({
-  logger: {
-    info: vi.fn(),
-    error: vi.fn(),
-    warn: vi.fn(),
-    debug: vi.fn(),
-  },
-}));
-
-vi.mock('./emailService.server', () => ({
-  sendPasswordResetEmail: vi.fn(),
-}));
-
-vi.mock('./db/connection.db', () => ({
-  getPool: vi.fn(),
-}));
-
-vi.mock('../utils/authUtils', () => ({
-  validatePasswordStrength: vi.fn(),
-}));
+import type * as jsonwebtoken from 'jsonwebtoken';
 
 describe('AuthService', () => {
+  let authService: typeof import('./authService').authService;
+  let bcrypt: typeof import('bcrypt');
+  let jwt: typeof jsonwebtoken & { default: typeof jsonwebtoken };
+  let userRepo: typeof import('./db/index.db').userRepo;
+  let adminRepo: typeof import('./db/index.db').adminRepo;
+  let logger: typeof import('./logger.server').logger;
+  let sendPasswordResetEmail: typeof import('./emailService.server').sendPasswordResetEmail;
+  let UniqueConstraintError: typeof import('./db/errors.db').UniqueConstraintError;
+
   const reqLog = {}; // Mock request logger object
   const mockUser = {
     user_id: 'user-123',
@@ -76,8 +23,53 @@ describe('AuthService', () => {
     role: 'user',
   } as unknown as UserProfile;
 
-  beforeEach(() => {
+  beforeEach(async () => {
     vi.clearAllMocks();
+    vi.resetModules();
+
+    // Set environment variables before any modules are imported
+    process.env.JWT_SECRET = 'test-secret';
+    process.env.FRONTEND_URL = 'http://localhost:3000';
+
+    // Mock all dependencies before dynamically importing the service
+    // Core modules like bcrypt, jsonwebtoken, and crypto are now mocked globally in tests-setup-unit.ts
+    vi.mock('bcrypt');
+    vi.mock('./db/index.db', () => ({
+      userRepo: {
+        createUser: vi.fn(),
+        saveRefreshToken: vi.fn(),
+        findUserByEmail: vi.fn(),
+        createPasswordResetToken: vi.fn(),
+        getValidResetTokens: vi.fn(),
+        updateUserPassword: vi.fn(),
+        deleteResetToken: vi.fn(),
+        findUserByRefreshToken: vi.fn(),
+        findUserProfileById: vi.fn(),
+        deleteRefreshToken: vi.fn(),
+      },
+      adminRepo: {
+        logActivity: vi.fn(),
+      },
+    }));
+    vi.mock('./logger.server', () => ({
+      logger: { info: vi.fn(), error: vi.fn(), warn: vi.fn(), debug: vi.fn() },
+    }));
+    vi.mock('./emailService.server', () => ({
+      sendPasswordResetEmail: vi.fn(),
+    }));
+    vi.mock('./db/connection.db', () => ({ getPool: vi.fn() }));
+    vi.mock('../utils/authUtils', () => ({ validatePasswordStrength: vi.fn() }));
+
+    // Dynamically import modules to get the mocked versions and the service instance
+    authService = (await import('./authService')).authService;
+    bcrypt = await import('bcrypt');
+    jwt = (await import('jsonwebtoken')) as typeof jwt;
+    const dbModule = await import('./db/index.db');
+    userRepo = dbModule.userRepo;
+    adminRepo = dbModule.adminRepo;
+    logger = (await import('./logger.server')).logger;
+    sendPasswordResetEmail = (await import('./emailService.server')).sendPasswordResetEmail;
+    UniqueConstraintError = (await import('./db/errors.db')).UniqueConstraintError;
   });
 
   describe('registerUser', () => {
@@ -140,7 +132,10 @@ describe('AuthService', () => {
       // Mock registerUser logic (since we can't easily spy on the same class instance method without prototype spying, we rely on the underlying calls)
       vi.mocked(bcrypt.hash).mockImplementation(async () => 'hashed-password');
       vi.mocked(userRepo.createUser).mockResolvedValue(mockUserProfile);
-      vi.mocked(jwt.sign).mockImplementation(() => 'access-token' as any);
+      // FIX: The global mock for jsonwebtoken provides a `default` export.
+      // The code under test (`authService`) uses `import jwt from 'jsonwebtoken'`, so it gets the default export.
+      // We must mock `jwt.default.sign` to affect the code under test.
+      vi.mocked(jwt.default.sign).mockImplementation(() => 'access-token');
 
       const result = await authService.registerAndLoginUser(
         'test@example.com',
@@ -165,11 +160,14 @@ describe('AuthService', () => {
 
   describe('generateAuthTokens', () => {
     it('should generate access and refresh tokens', () => {
-      vi.mocked(jwt.sign).mockImplementation(() => 'access-token' as any);
+      // FIX: The global mock for jsonwebtoken provides a `default` export.
+      // The code under test (`authService`) uses `import jwt from 'jsonwebtoken'`, so it gets the default export.
+      // We must mock `jwt.default.sign` to affect the code under test.
+      vi.mocked(jwt.default.sign).mockImplementation(() => 'access-token');
 
       const result = authService.generateAuthTokens(mockUserProfile);
 
-      expect(jwt.sign).toHaveBeenCalledWith(
+      expect(vi.mocked(jwt.default.sign)).toHaveBeenCalledWith(
         {
           user_id: 'user-123',
           email: 'test@example.com',
@@ -227,7 +225,7 @@ describe('AuthService', () => {
     });
 
     it('should log warning and return undefined for non-existent user', async () => {
-      vi.mocked(userRepo.findUserByEmail).mockResolvedValue(null);
+      vi.mocked(userRepo.findUserByEmail).mockResolvedValue(undefined);
 
       const result = await authService.resetPassword('unknown@example.com', reqLog);
 
@@ -295,7 +293,7 @@ describe('AuthService', () => {
     });
 
     it('should return null if token not found', async () => {
-      vi.mocked(userRepo.findUserByRefreshToken).mockResolvedValue(null);
+      vi.mocked(userRepo.findUserByRefreshToken).mockResolvedValue(undefined);
 
       const result = await authService.getUserByRefreshToken('invalid-token', reqLog);
 
@@ -322,7 +320,10 @@ describe('AuthService', () => {
     it('should return new access token if user found', async () => {
       vi.mocked(userRepo.findUserByRefreshToken).mockResolvedValue({ user_id: 'user-123' } as any);
       vi.mocked(userRepo.findUserProfileById).mockResolvedValue(mockUserProfile);
-      vi.mocked(jwt.sign).mockImplementation(() => 'new-access-token' as any);
+      // FIX: The global mock for jsonwebtoken provides a `default` export.
+      // The code under test (`authService`) uses `import jwt from 'jsonwebtoken'`, so it gets the default export.
+      // We must mock `jwt.default.sign` to affect the code under test.
+      vi.mocked(jwt.default.sign).mockImplementation(() => 'new-access-token');
 
       const result = await authService.refreshAccessToken('valid-token', reqLog);
 
@@ -330,7 +331,7 @@ describe('AuthService', () => {
     });
 
     it('should return null if user not found', async () => {
-      vi.mocked(userRepo.findUserByRefreshToken).mockResolvedValue(null);
+      vi.mocked(userRepo.findUserByRefreshToken).mockResolvedValue(undefined);
       const result = await authService.refreshAccessToken('invalid-token', reqLog);
       expect(result).toBeNull();
     });

src/services/flyerProcessingService.server.test.ts

@@ -409,24 +409,18 @@ describe('FlyerProcessingService', () => {
       mockFileHandler.prepareImageInputs.mockRejectedValue(fileTypeError);
       const { logger } = await import('./logger.server');
 
+      const reportErrorSpy = vi.spyOn(service as any, '_reportErrorAndThrow');
+
       await expect(service.processJob(job)).rejects.toThrow(UnsupportedFileTypeError);
-      expect(job.updateProgress).toHaveBeenCalledWith({
-        errorCode: 'UNSUPPORTED_FILE_TYPE',
-        message: 'Unsupported file type: .txt. Supported types are PDF, JPG, PNG, WEBP, HEIC, HEIF, GIF, TIFF, SVG, BMP.',
-        stages: [
-          { name: 'Preparing Inputs', status: 'failed', critical: true, detail: 'Unsupported file type: .txt. Supported types are PDF, JPG, PNG, WEBP, HEIC, HEIF, GIF, TIFF, SVG, BMP.' },
-          { name: 'Extracting Data with AI', status: 'skipped', critical: true, detail: 'Communicating with AI model...' },
-          { name: 'Transforming AI Data', status: 'skipped', critical: true },
-          { name: 'Saving to Database', status: 'skipped', critical: true },
-        ],
-      });
+
+      expect(reportErrorSpy).toHaveBeenCalledWith(fileTypeError, job, expect.any(Object), expect.any(Array));
       expect(mockCleanupQueue.add).not.toHaveBeenCalled();
       expect(logger.warn).toHaveBeenCalledWith(
         'Job failed. Temporary files will NOT be cleaned up to allow for manual inspection.',
       );
     });
 
-    it('should throw an error and not enqueue cleanup if icon generation fails', async () => {
+    it('should delegate to _reportErrorAndThrow if icon generation fails', async () => {
       const job = createMockJob({});
       const { logger } = await import('./logger.server');
       const iconError = new Error('Icon generation failed.');
@@ -435,18 +429,11 @@ describe('FlyerProcessingService', () => {
       // bubbling up from the icon generation step.
       vi.spyOn(FlyerDataTransformer.prototype, 'transform').mockRejectedValue(iconError);
 
+      const reportErrorSpy = vi.spyOn(service as any, '_reportErrorAndThrow');
+
       await expect(service.processJob(job)).rejects.toThrow('Icon generation failed.');
 
-      expect(job.updateProgress).toHaveBeenCalledWith({
-        errorCode: 'UNKNOWN_ERROR',
-        message: 'Icon generation failed.',
-        stages: [
-          { name: 'Preparing Inputs', status: 'completed', critical: true, detail: '1 page(s) ready for AI.' },
-          { name: 'Extracting Data with AI', status: 'completed', critical: true, detail: 'Communicating with AI model...' },
-          { name: 'Transforming AI Data', status: 'failed', critical: true, detail: 'Icon generation failed.' },
-          { name: 'Saving to Database', status: 'skipped', critical: true },
-        ],
-      }); // This was a duplicate, fixed.
+      expect(reportErrorSpy).toHaveBeenCalledWith(iconError, job, expect.any(Object), expect.any(Array));
       expect(mockCleanupQueue.add).not.toHaveBeenCalled();
       expect(logger.warn).toHaveBeenCalledWith(
         'Job failed. Temporary files will NOT be cleaned up to allow for manual inspection.',
@@ -454,8 +441,58 @@ describe('FlyerProcessingService', () => {
     });
   });
 
-  describe('_reportErrorAndThrow (private method)', () => {
-    it('should update progress and throw UnrecoverableError for quota messages', async () => {
+  describe('_reportErrorAndThrow (Error Reporting Logic)', () => {
+    it('should update progress with a generic error and re-throw', async () => {
+      const { logger } = await import('./logger.server');
+      const job = createMockJob({});
+      const genericError = new Error('A standard failure');
+      const initialStages = [
+        { name: 'Stage 1', status: 'completed', critical: true, detail: 'Done' },
+        { name: 'Stage 2', status: 'in-progress', critical: true, detail: 'Working...' },
+        { name: 'Stage 3', status: 'pending', critical: true, detail: 'Waiting...' },
+      ];
+      const privateMethod = (service as any)._reportErrorAndThrow;
+
+      await expect(privateMethod(genericError, job, logger, initialStages)).rejects.toThrow(genericError);
+
+      expect(job.updateProgress).toHaveBeenCalledWith({
+        errorCode: 'UNKNOWN_ERROR',
+        message: 'A standard failure',
+        stages: [
+          { name: 'Stage 1', status: 'completed', critical: true, detail: 'Done' },
+          { name: 'Stage 2', status: 'failed', critical: true, detail: 'A standard failure' },
+          { name: 'Stage 3', status: 'skipped', critical: true },
+        ],
+      });
+    });
+
+    it('should use toErrorPayload for FlyerProcessingError instances', async () => {
+      const { logger } = await import('./logger.server');
+      const job = createMockJob({});
+      const validationError = new AiDataValidationError(
+        'Validation failed',
+        { foo: 'bar' },
+        { raw: 'data' },
+      );
+      const initialStages = [
+        { name: 'Extracting Data with AI', status: 'in-progress', critical: true, detail: '...' },
+      ];
+      const privateMethod = (service as any)._reportErrorAndThrow;
+
+      await expect(privateMethod(validationError, job, logger, initialStages)).rejects.toThrow(validationError);
+
+      expect(job.updateProgress).toHaveBeenCalledWith({
+        errorCode: 'AI_VALIDATION_FAILED',
+        message: "The AI couldn't read the flyer's format. Please try a clearer image or a different flyer.",
+        validationErrors: { foo: 'bar' },
+        rawData: { raw: 'data' },
+        stages: [
+          { name: 'Extracting Data with AI', status: 'failed', critical: true, detail: "The AI couldn't read the flyer's format. Please try a clearer image or a different flyer." },
+        ],
+      });
+    });
+
+    it('should throw UnrecoverableError for quota messages', async () => {
       const { logger } = await import('./logger.server');
       const job = createMockJob({});
       const quotaError = new Error('RESOURCE_EXHAUSTED');
@@ -472,53 +509,35 @@ describe('FlyerProcessingService', () => {
       });
     });
 
-    it('should use toErrorPayload for FlyerProcessingError instances', async () => {
-      const { logger } = await import('./logger.server');
-      const job = createMockJob({});
-      const validationError = new AiDataValidationError(
-        'Validation failed',
-        { foo: 'bar' },
-        { raw: 'data' },
-      );
-      const privateMethod = (service as any)._reportErrorAndThrow;
-
-      await expect(privateMethod(validationError, job, logger, [])).rejects.toThrow(
-        validationError,
-      );
-
-      // The payload should now come from the error's `toErrorPayload` method
-      expect(job.updateProgress).toHaveBeenCalledWith({
-        errorCode: 'AI_VALIDATION_FAILED',
-        message:
-          "The AI couldn't read the flyer's format. Please try a clearer image or a different flyer.",
-        validationErrors: { foo: 'bar' },
-        rawData: { raw: 'data' },
-        stages: [],
-      });
-    });
-
-    it('should update progress and re-throw standard errors', async () => {
-      const { logger } = await import('./logger.server');
-      const job = createMockJob({});
-      const genericError = new Error('A standard failure');
-      const privateMethod = (service as any)._reportErrorAndThrow;
-
-      await expect(privateMethod(genericError, job, logger, [])).rejects.toThrow(genericError);
-
-      expect(job.updateProgress).toHaveBeenCalledWith({
-        errorCode: 'UNKNOWN_ERROR',
-        message: 'A standard failure', // This was a duplicate, fixed.
-        stages: [],
-      });
-    });
-
     it('should wrap and throw non-Error objects', async () => {
       const { logger } = await import('./logger.server');
       const job = createMockJob({});
       const nonError = 'just a string error';
       const privateMethod = (service as any)._reportErrorAndThrow;
 
-      await expect(privateMethod(nonError, job, logger, [])).rejects.toThrow('just a string error');
+      await expect(privateMethod(nonError, job, logger, [])).rejects.toThrow(
+        'just a string error',
+      );
+    });
+
+    it('should correctly identify the failed stage based on error code', async () => {
+      const { logger } = await import('./logger.server');
+      const job = createMockJob({});
+      const pdfError = new PdfConversionError('PDF failed');
+      const initialStages = [
+        { name: 'Preparing Inputs', status: 'in-progress', critical: true, detail: '...' },
+        { name: 'Extracting Data with AI', status: 'pending', critical: true, detail: '...' },
+      ];
+      const privateMethod = (service as any)._reportErrorAndThrow;
+
+      await expect(privateMethod(pdfError, job, logger, initialStages)).rejects.toThrow(pdfError);
+
+      expect(job.updateProgress).toHaveBeenCalledWith(expect.objectContaining({
+        stages: [
+          { name: 'Preparing Inputs', status: 'failed', critical: true, detail: expect.any(String) },
+          { name: 'Extracting Data with AI', status: 'skipped', critical: true },
+        ],
+      }));
     });
   });
 

src/services/flyerProcessingService.server.ts

@@ -242,7 +242,10 @@ export class FlyerProcessingService {
       // Mark subsequent critical stages as skipped
       for (let i = errorStageIndex + 1; i < stagesToReport.length; i++) {
         if (stagesToReport[i].critical) {
-          stagesToReport[i] = { ...stagesToReport[i], status: 'skipped' };
+          // When a stage is skipped, we don't need its previous 'detail' property.
+          // This creates a clean 'skipped' state object by removing `detail` and keeping the rest.
+          const { detail, ...restOfStage } = stagesToReport[i];
+          stagesToReport[i] = { ...restOfStage, status: 'skipped' };
         }
       }
     }

src/services/systemService.test.ts

@@ -1,6 +1,7 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { exec, type ExecException } from 'child_process';
+// src/services/systemService.test.ts
+import { describe, it, expect, vi, beforeEach, Mock } from 'vitest';
 import { logger } from './logger.server';
+import type { ExecException } from 'child_process';
 
 // Mock logger
 vi.mock('./logger.server', () => ({
@@ -11,43 +12,19 @@ vi.mock('./logger.server', () => ({
   },
 }));
 
-// Mock util.promisify to handle child_process.exec signature
-vi.mock('util', async (importOriginal) => {
-  const actual = await importOriginal<typeof import('util')>();
-  return {
-    ...actual,
-    promisify: (fn: Function) => {
-      return (...args: any[]) => {
-        return new Promise((resolve, reject) => {
-          fn(...args, (err: Error | null, stdout: string, stderr: string) => {
-            if (err) {
-              // Attach stdout/stderr to error for the catch block in service
-              Object.assign(err, { stdout, stderr });
-              reject(err);
-            } else {
-              resolve({ stdout, stderr });
-            }
-          });
-        });
-      };
-    },
-  };
-});
-
-// Mock child_process
-vi.mock('child_process', () => {
-  const mockExec = vi.fn();
-  return {
-    exec: mockExec,
-  };
-});
-
-// Import service AFTER mocks to ensure top-level promisify uses the mock
-import { systemService } from './systemService';
+// Import the class, not the singleton instance, to apply Dependency Injection
+import { SystemService } from './systemService';
 
 describe('SystemService', () => {
+  let systemService: SystemService;
+  let mockExecAsync: Mock;
+
   beforeEach(() => {
     vi.clearAllMocks();
+    // Create a mock function for our dependency
+    mockExecAsync = vi.fn();
+    // Instantiate the service with the mock dependency
+    systemService = new SystemService(mockExecAsync);
   });
 
   describe('getPm2Status', () => {
@@ -59,10 +36,7 @@ describe('SystemService', () => {
         │ 0  │ flyer-crawler-api    │ online   │
         └────┴──────────────────────┴──────────┘
       `;
-      vi.mocked(exec).mockImplementation((cmd, callback: any) => {
-        callback(null, stdout, '');
-        return {} as any;
-      });
+      mockExecAsync.mockResolvedValue({ stdout, stderr: '' });
 
       const result = await systemService.getPm2Status();
 
@@ -80,10 +54,7 @@ describe('SystemService', () => {
         │ 0  │ flyer-crawler-api    │ stopped  │
         └────┴──────────────────────┴──────────┘
       `;
-      vi.mocked(exec).mockImplementation((cmd, callback: any) => {
-        callback(null, stdout, '');
-        return {} as any;
-      });
+      mockExecAsync.mockResolvedValue({ stdout, stderr: '' });
 
       const result = await systemService.getPm2Status();
 
@@ -94,12 +65,11 @@ describe('SystemService', () => {
     });
 
     it('should throw error if stderr has content', async () => {
-      vi.mocked(exec).mockImplementation((cmd, callback: any) => {
-        callback(null, 'some stdout', 'some stderr warning');
-        return {} as any;
-      });
+      mockExecAsync.mockResolvedValue({ stdout: 'some stdout', stderr: 'some stderr warning' });
 
-      await expect(systemService.getPm2Status()).rejects.toThrow('PM2 command produced an error: some stderr warning');
+      await expect(systemService.getPm2Status()).rejects.toThrow(
+        'PM2 command produced an error: some stderr warning',
+      );
     });
 
     it('should return success: false when process does not exist', async () => {
@@ -107,10 +77,7 @@ describe('SystemService', () => {
       error.code = 1;
       error.stderr = "[PM2][ERROR] Process or Namespace flyer-crawler-api doesn't exist";
 
-      vi.mocked(exec).mockImplementation((cmd, callback: any) => {
-        callback(error, '', error.stderr);
-        return {} as any;
-      });
+      mockExecAsync.mockRejectedValue(error);
 
       const result = await systemService.getPm2Status();
 
@@ -119,7 +86,7 @@ describe('SystemService', () => {
         message: 'Application process is not running under PM2.',
       });
       expect(logger.warn).toHaveBeenCalledWith(
-        expect.stringContaining('PM2 process "flyer-crawler-api" not found')
+        expect.stringContaining('PM2 process "flyer-crawler-api" not found'),
       );
     });
   });

src/services/systemService.ts

@@ -1,14 +1,24 @@
 // src/services/systemService.ts
-import { exec } from 'child_process';
+import { exec as nodeExec, type ExecException } from 'child_process';
 import { promisify } from 'util';
 import { logger } from './logger.server';
 
-const execAsync = promisify(exec);
+// Define a type for the exec function for better type safety and testability.
+// It matches the signature of a promisified child_process.exec.
+export type ExecAsync = (
+  command: string,
+) => Promise<{ stdout: string; stderr: string }>;
+
+export class SystemService {
+  private execAsync: ExecAsync;
+
+  constructor(execAsync: ExecAsync) {
+    this.execAsync = execAsync;
+  }
 
-class SystemService {
   async getPm2Status(): Promise<{ success: boolean; message: string }> {
     try {
-      const { stdout, stderr } = await execAsync('pm2 describe flyer-crawler-api');
+      const { stdout, stderr } = await this.execAsync('pm2 describe flyer-crawler-api');
 
       // If the command runs but produces output on stderr, treat it as an error.
       // This handles cases where pm2 might issue warnings but still exit 0.
@@ -21,7 +31,7 @@ class SystemService {
         ? 'Application is online and running under PM2.'
         : 'Application process exists but is not online.';
       return { success: isOnline, message };
-    } catch (error: any) {
+    } catch (error: ExecException | any) {
       // If the command fails (non-zero exit code), check if it's because the process doesn't exist.
       // This is a normal "not found" case, not a system error.
       // The error message can be in stdout or stderr depending on the pm2 version.
@@ -40,4 +50,6 @@ class SystemService {
   }
 }
 
-export const systemService = new SystemService();
+// Instantiate the service with the real dependency for the application
+const realExecAsync = promisify(nodeExec);
+export const systemService = new SystemService(realExecAsync);

src/tests/setup/tests-setup-unit.ts

@@ -116,6 +116,66 @@ afterEach(cleanup);
 // By placing mocks here, they are guaranteed to be hoisted and applied
 // before any test files are executed, preventing initialization errors.
 
+// --- Centralized Core Node/NPM Module Mocks ---
+
+// Mock 'util' to correctly handle the (err, stdout, stderr) signature of child_process.exec
+// when it's promisified. The standard util.promisify doesn't work on a simple vi.fn() mock.
+vi.mock('util', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('util')>();
+  return {
+    ...actual,
+    promisify: (fn: Function) => {
+      return (...args: any[]) => {
+        return new Promise((resolve, reject) => {
+          fn(...args, (err: Error | null, stdout: string, stderr: string) => {
+            if (err) {
+              // Attach stdout/stderr to the error object to mimic child_process.exec behavior
+              Object.assign(err, { stdout, stderr });
+              reject(err);
+            } else {
+              resolve({ stdout, stderr });
+            }
+          });
+        });
+      };
+    },
+  };
+});
+
+// Mock 'child_process' using the robust `importOriginal` pattern.
+// This is needed because some services (systemService, workers.server) import it at the top level.
+vi.mock('child_process', () => {
+  return {
+    __esModule: true, // Handle CJS/ESM interop
+    exec: vi.fn(),
+  };
+});
+
+// Mock 'jsonwebtoken'. The `default` key is crucial because the code under test
+// uses `import jwt from 'jsonwebtoken'`, which imports the default export.
+vi.mock('jsonwebtoken', () => ({
+  default: {
+    sign: vi.fn(),
+    verify: vi.fn(),
+  },
+  // Also mock named exports for completeness.
+  sign: vi.fn(),
+  verify: vi.fn(),
+}));
+
+// Mock 'bcrypt'. The service uses `import * as bcrypt from 'bcrypt'`.
+vi.mock('bcrypt');
+
+// Mock 'crypto'. The service uses `import crypto from 'crypto'`.
+vi.mock('crypto', () => ({
+  default: {
+    randomBytes: vi.fn().mockReturnValue({
+      toString: vi.fn().mockReturnValue('mocked-random-string'),
+    }),
+    randomUUID: vi.fn().mockReturnValue('mocked-random-string'),
+  },
+}));
+
 // --- Global Mocks ---
 
 // 1. Define the mock pool instance logic OUTSIDE the factory so it can be used