refactor: [shitty claude AI first try] restructure server and user services, add new test cases, and improve error handling

.github/workflows/test.yml

@@ -0,0 +1,165 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main, develop ]
+    paths:
+      - 'back/**'
+  pull_request:
+    branches: [ main, develop ]
+    paths:
+      - 'back/**'
+
+defaults:
+  run:
+    working-directory: ./back
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_USER: test_user
+          POSTGRES_PASSWORD: test_password
+          POSTGRES_DB: logidex_test
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+      
+      redis:
+        image: redis:7-alpine
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 6379:6379
+
+    strategy:
+      matrix:
+        go-version: [1.24]
+        test-type: [unit, integration]
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: ${{ matrix.go-version }}
+    
+    - name: Cache Go modules
+      uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+    
+    - name: Install dependencies
+      run: go mod download
+    
+    - name: Verify dependencies
+      run: go mod verify
+    
+    - name: Run linters
+      run: |
+        go vet ./...
+        go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+        golangci-lint run
+    
+    - name: Run unit tests
+      if: matrix.test-type == 'unit'
+      run: |
+        make test-unit
+    
+    - name: Run integration tests
+      if: matrix.test-type == 'integration'
+      env:
+        TEST_DB_HOST: localhost
+        TEST_DB_PORT: 5432
+        TEST_DB_NAME: logidex_test
+        TEST_DB_USER: test_user
+        TEST_DB_PASSWORD: test_password
+        TEST_REDIS_HOST: localhost
+        TEST_REDIS_PORT: 6379
+      run: |
+        make test-integration
+    
+    - name: Run tests with coverage
+      run: |
+        make test-coverage-html
+    
+    - name: Upload coverage reports
+      uses: codecov/codecov-action@v3
+      with:
+        file: ./coverage.out
+        flags: unittests
+        name: codecov-umbrella
+    
+    - name: Check coverage threshold
+      run: |
+        make test-coverage-check
+    
+    - name: Run race condition tests
+      run: |
+        make test-race
+
+  benchmark:
+    name: Benchmark
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: 1.24
+    
+    - name: Run benchmarks
+      run: |
+        make test-bench | tee benchmark.txt
+    
+    - name: Store benchmark results
+      uses: actions/upload-artifact@v3
+      with:
+        name: benchmark-results
+        path: benchmark.txt
+
+  security:
+    name: Security Scan
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: 1.24
+    
+    - name: Install gosec
+      run: go install github.com/securecodewarrior/gosec/v2/cmd/gosec@latest
+    
+    - name: Run security scan
+      run: gosec ./...
+    
+    - name: Install govulncheck
+      run: go install golang.org/x/vuln/cmd/govulncheck@latest
+    
+    - name: Run vulnerability check
+      run: govulncheck ./...