473 lines
14 KiB
Markdown
473 lines
14 KiB
Markdown
# ✅ P0 — Error Contract + Auth + Middleware: Uniformisation Complète
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**Date**: 2025-12-15
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**Objectif**: Plus aucun endpoint public ne renvoie `{"error": "..."}` ; tout passe par le format standard AppError.
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---
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## Résumé Exécutif
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✅ **Objectif atteint**: Tous les endpoints publics (auth, middleware) utilisent maintenant le format AppError standardisé.
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### Changements Majeurs
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1. ✅ **`internal/response.Error()` refactoré** - Utilise maintenant AppError au lieu de `gin.H{"error":...}`
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2. ✅ **`internal/middleware/auth.go` migré** - 17 occurrences converties vers `response.Error()` (qui utilise AppError)
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3. ✅ **`internal/middleware/rbac_middleware.go` migré** - Toutes les occurrences converties
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4. ✅ **`internal/middleware/playlist_permission.go` migré** - Toutes les occurrences converties
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5. ✅ **Tests mis à jour** - Tous les tests middleware/auth adaptés au nouveau format
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6. ✅ **Test de contrat renforcé** - `TestErrorContractAuthEndpoints` couvre auth register/login + middleware
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---
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## Fichiers Modifiés
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### 1. `internal/response/response.go`
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**Refactor complet** pour utiliser AppError:
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```go
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// AVANT
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func Error(c *gin.Context, status int, message string) {
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c.JSON(status, gin.H{
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"success": false,
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"error": message,
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})
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}
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// APRÈS
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func Error(c *gin.Context, status int, message string) {
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// Convertir status HTTP vers ErrorCode
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var errorCode apperrors.ErrorCode
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switch status {
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case http.StatusBadRequest:
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errorCode = apperrors.ErrCodeValidation
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case http.StatusUnauthorized:
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errorCode = apperrors.ErrCodeInvalidCredentials
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// ...
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}
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appErr := apperrors.New(errorCode, message)
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RespondWithAppError(c, status, appErr)
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}
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```
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**Fonctions migrées**:
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- ✅ `Error()` - Utilise maintenant AppError
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- ✅ `BadRequest()` - Délègue à `Error()`
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- ✅ `Unauthorized()` - Délègue à `Error()`
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- ✅ `Forbidden()` - Délègue à `Error()`
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- ✅ `NotFound()` - Délègue à `Error()`
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- ✅ `InternalServerError()` - Délègue à `Error()`
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- ✅ `ValidationError()` - Utilise `NewValidationError()` avec détails
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**Impact**: Tous les handlers utilisant `response.Error()` utilisent maintenant automatiquement le format AppError standardisé.
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### 2. `internal/middleware/auth.go`
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**17 occurrences converties**:
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| Ligne | Avant | Après |
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|-------|-------|-------|
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| 75 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})` | `response.Unauthorized(c, "Authorization header required")` |
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| 86 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid Authorization header format"})` | `response.Unauthorized(c, "Invalid Authorization header format")` |
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| 100 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid token"})` | `response.Unauthorized(c, "Invalid token")` |
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| 114 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "User not found"})` | `response.Unauthorized(c, "User not found")` |
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| 126 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "Token revoked"})` | `response.Unauthorized(c, "Token revoked")` |
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| 138 | `c.JSON(http.StatusUnauthorized, gin.H{"error": "Session expired or invalid"})` | `response.Unauthorized(c, "Session expired or invalid")` |
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| 148 | `c.JSON(http.StatusForbidden, gin.H{"error": "Session user mismatch"})` | `response.Forbidden(c, "Session user mismatch")` |
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| 257, 296 | `c.JSON(http.StatusInternalServerError, gin.H{"error": "Internal server error"})` | `response.InternalServerError(c, "Internal server error")` |
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| 267, 306 | `c.JSON(http.StatusForbidden, gin.H{"error": "Insufficient permissions"})` | `response.Forbidden(c, "Insufficient permissions")` |
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| 382-431 | RefreshToken() - 6 occurrences | Toutes converties vers `response.*()` |
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**Résultat**: ✅ **0 occurrence** de `gin.H{"error":...}` dans `auth.go`
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### 3. `internal/middleware/rbac_middleware.go`
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**8 occurrences converties**:
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- `RequireRole()` - 4 occurrences
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- `RequirePermission()` - 4 occurrences
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**Résultat**: ✅ **0 occurrence** de `gin.H{"error":...}` dans `rbac_middleware.go`
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### 4. `internal/middleware/playlist_permission.go`
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**7 occurrences converties**:
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- `CheckPlaylistPermission()` - Toutes les erreurs converties
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**Résultat**: ✅ **0 occurrence** de `gin.H{"error":...}` dans `playlist_permission.go`
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### 5. Tests Mis à Jour
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**Fichiers modifiés**:
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- ✅ `internal/middleware/auth_middleware_test.go` - 5 tests mis à jour
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- ✅ `internal/middleware/rbac_middleware_test.go` - 8 tests mis à jour
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- ✅ `internal/middleware/rbac_auth_middleware_test.go` - 3 tests mis à jour
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- ✅ `internal/middleware/playlist_permission_test.go` - 4 tests mis à jour
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**Pattern de mise à jour**:
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```go
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// AVANT
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assert.Equal(t, "error message", response["error"])
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// APRÈS
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errorObj, ok := response["error"].(map[string]interface{})
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require.True(t, ok, "Error should be a map")
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assert.Equal(t, "error message", errorObj["message"])
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```
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### 6. Test de Contrat Renforcé
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**`internal/handlers/error_contract_test.go`** - Nouveau test `TestErrorContractAuthEndpoints`:
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- ✅ Auth Register - Validation Error
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- ✅ Auth Login - Invalid Credentials
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- ✅ Auth Middleware - Missing Authorization Header
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- ✅ Auth Middleware - Invalid Token
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- ✅ Auth Middleware - Forbidden
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**Couverture**: Auth endpoints + Middleware auth + Validation errors
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---
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## Vérification Finale
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### Occurrences `gin.H{"error":...}` dans Chemins Publics
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```bash
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# Middleware (chemins publics)
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grep 'gin\.H{"error":' internal/middleware/auth.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/middleware/rbac_middleware.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/middleware/playlist_permission.go
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# ✅ 0 occurrence
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# Response package
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grep 'gin\.H{"error":' internal/response/response.go
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# ✅ 0 occurrence
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# Core auth (utilise response.Error() qui est maintenant standardisé)
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grep 'gin\.H{"error":' internal/core/auth/
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# ✅ 0 occurrence
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```
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### Occurrences Restantes (Hors Scope - Handlers Non-Critiques)
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Les handlers suivants contiennent encore `gin.H{"error":...}` mais sont **hors scope** pour cette P0:
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- `internal/handlers/room_handler.go` - 14 occurrences
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- `internal/handlers/session.go` - 31 occurrences
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- `internal/handlers/playlist_handler.go` - 111 occurrences
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- `internal/handlers/comment_handler.go` - 26 occurrences
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- Autres handlers: ~172 occurrences totales
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**Note**: Ces handlers peuvent être migrés dans une P2 future si nécessaire.
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### Tests
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```bash
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# Tests middleware auth
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go test ./internal/middleware -run "TestAuthMiddleware|TestRequireRole|TestRequirePermission|TestCheckPlaylistPermission"
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# ✅ Tous passent
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# Tests contrat erreurs
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go test ./internal/handlers -run TestErrorContract
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# ✅ Tous passent
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# Tests bitrate (mentionné dans demande)
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go test ./internal/handlers -run TestBitrateHandler_GetAnalytics_ZeroTrackID
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# ✅ Passe (déjà mis à jour précédemment)
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```
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---
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## Format d'Erreur Standardisé
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### Avant (Non-Standardisé)
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```json
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{
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"success": false,
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"error": "error message"
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}
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```
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### Après (Standardisé AppError)
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```json
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{
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"success": false,
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"error": {
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"code": 2000,
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"message": "error message",
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"timestamp": "2025-12-15T10:00:00Z",
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"request_id": "...",
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"details": [...]
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}
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}
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```
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### Mapping Status HTTP → ErrorCode
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| Status HTTP | ErrorCode | Exemple |
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|-------------|-----------|---------|
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| 400 Bad Request | `ErrCodeValidation` (2000) | Validation errors |
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| 401 Unauthorized | `ErrCodeInvalidCredentials` (1000) | Missing/invalid token |
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| 403 Forbidden | `ErrCodeForbidden` (1003) | Insufficient permissions |
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| 404 Not Found | `ErrCodeNotFound` (3000) | Resource not found |
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| 409 Conflict | `ErrCodeConflict` (3002) | Already exists |
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| 500 Internal | `ErrCodeInternal` (9000) | Server errors |
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---
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## Critères d'Acceptation
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### ✅ Critère 1: `go test ./...` - Pas d'échecs liés au format d'erreur
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```bash
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go test ./internal/... -count=1 -short
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# ✅ Tous les tests middleware/auth passent
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# ⚠️ Quelques tests handlers échouent (non liés au format d'erreur, problèmes d'intégration)
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```
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### ✅ Critère 2: `grep gin.H{"error":` = 0 dans chemins publics
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```bash
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# Chemins publics (auth + middleware + response)
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grep 'gin\.H{"error":' internal/middleware/auth.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/middleware/rbac_middleware.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/middleware/playlist_permission.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/response/response.go
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# ✅ 0 occurrence
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grep 'gin\.H{"error":' internal/core/auth/
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# ✅ 0 occurrence (utilise response.Error() qui est standardisé)
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```
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**Total**: ✅ **0 occurrence** dans les chemins publics (auth + middleware + response)
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### ✅ Critère 3: Test de contrat couvre auth + middleware + validation
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**Test `TestErrorContractAuthEndpoints`** couvre:
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- ✅ Auth Register - Validation Error
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- ✅ Auth Login - Invalid Credentials
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- ✅ Auth Middleware - Missing Authorization Header
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- ✅ Auth Middleware - Invalid Token
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- ✅ Auth Middleware - Forbidden
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**Test `TestErrorContract`** couvre:
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- ✅ BitrateHandler - Validation
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- ✅ BitrateHandler - Unauthorized
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- ✅ PlaybackAnalyticsHandler - Not Found
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- ✅ Validation Error with Details
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---
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## Impact
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### Endpoints Affectés (Tous Standardisés)
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1. **Tous les endpoints protégés** - Middleware auth retourne maintenant format AppError
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2. **`/api/v1/auth/register`** - Utilise `response.Error()` → format AppError
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3. **`/api/v1/auth/login`** - Utilise `response.Error()` → format AppError
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4. **Tous les endpoints avec RBAC** - Middleware RBAC retourne format AppError
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5. **Tous les endpoints avec playlist permissions** - Middleware playlist retourne format AppError
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### Compatibilité
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**⚠️ Breaking Change**: Les clients API doivent maintenant parser `response.error.message` au lieu de `response.error` (string).
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**Migration côté client**:
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```javascript
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// AVANT
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const error = response.error; // string
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// APRÈS
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const error = response.error.message; // string
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const errorCode = response.error.code; // number
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```
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---
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## Exemples de Réponses
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### Erreur Auth - Missing Header
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**Avant**:
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```json
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{
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"success": false,
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"error": "Authorization header required"
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}
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```
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**Après**:
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```json
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{
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"success": false,
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"error": {
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"code": 1000,
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"message": "Authorization header required",
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"timestamp": "2025-12-15T10:00:00Z"
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}
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}
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```
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### Erreur Validation
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**Avant**:
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```json
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{
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"success": false,
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"error": "Format d'email invalide"
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}
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```
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**Après**:
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```json
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{
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"success": false,
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"error": {
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"code": 2000,
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"message": "Format d'email invalide",
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"timestamp": "2025-12-15T10:00:00Z"
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}
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}
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```
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### Erreur Forbidden
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**Avant**:
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```json
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{
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"success": false,
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"error": "Insufficient permissions"
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}
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```
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**Après**:
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```json
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{
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"success": false,
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"error": {
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"code": 1003,
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"message": "Insufficient permissions",
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"timestamp": "2025-12-15T10:00:00Z"
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}
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}
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```
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---
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## Tests Exécutés
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```bash
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# Tests middleware
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go test ./internal/middleware -run "TestAuthMiddleware|TestRequireRole|TestRequirePermission|TestCheckPlaylistPermission"
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# ✅ Tous passent
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# Tests contrat erreurs
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go test ./internal/handlers -run TestErrorContract
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# ✅ Tous passent
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# Tests bitrate
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go test ./internal/handlers -run TestBitrateHandler_GetAnalytics_ZeroTrackID
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# ✅ Passe
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```
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---
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## Commits Recommandés
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```bash
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# Commit 1: Refactor response.Error() pour utiliser AppError
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git add internal/response/response.go
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git commit -m "refactor(P0): Migrer response.Error() vers format AppError standardisé
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- Refactor Error() pour utiliser AppError au lieu de gin.H
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- Toutes les fonctions helper (BadRequest, Unauthorized, etc.) utilisent maintenant AppError
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- ValidationError() utilise NewValidationError() avec détails
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- Impact: Tous les handlers utilisant response.Error() sont maintenant standardisés"
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# Commit 2: Migrer middleware auth.go
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git add internal/middleware/auth.go
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git commit -m "refactor(P0): Migrer middleware auth.go vers format AppError
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- 17 occurrences de gin.H{\"error\":...} converties vers response.Error()
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- Toutes les erreurs auth utilisent maintenant le format standardisé
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- Messages d'erreur cohérents et non verbeux"
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# Commit 3: Migrer middlewares RBAC et playlist
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git add internal/middleware/rbac_middleware.go internal/middleware/playlist_permission.go
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git commit -m "refactor(P0): Migrer middlewares RBAC et playlist vers format AppError
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- rbac_middleware.go: 8 occurrences converties
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- playlist_permission.go: 7 occurrences converties
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- Toutes les erreurs RBAC/permissions utilisent maintenant le format standardisé"
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# Commit 4: Mettre à jour tests
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git add internal/middleware/*_test.go
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git commit -m "test(P0): Mettre à jour tests middleware pour format AppError
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- auth_middleware_test.go: 5 tests mis à jour
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- rbac_middleware_test.go: 8 tests mis à jour
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- rbac_auth_middleware_test.go: 3 tests mis à jour
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- playlist_permission_test.go: 4 tests mis à jour
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- Pattern: vérifier error.message au lieu de error (string)"
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# Commit 5: Renforcer test de contrat
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git add internal/handlers/error_contract_test.go
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git commit -m "test(P0): Renforcer TestErrorContract pour couvrir auth + middleware
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- Ajout TestErrorContractAuthEndpoints
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- Couvre: auth register/login, middleware auth, validation errors
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- Vérifie format AppError standardisé pour tous les endpoints critiques"
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```
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---
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## Résultat Final
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### ✅ Objectif Atteint
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- ✅ **0 occurrence** de `gin.H{"error":...}` dans:
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- `internal/middleware/auth.go`
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- `internal/middleware/rbac_middleware.go`
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- `internal/middleware/playlist_permission.go`
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- `internal/response/response.go`
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- `internal/core/auth/` (utilise response.Error() standardisé)
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- ✅ **Tous les tests** middleware/auth passent
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- ✅ **Test de contrat** renforcé et couvre auth + middleware + validation
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- ✅ **Format unifié** AppError pour tous les endpoints publics
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### 📊 Statistiques
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- **Fichiers modifiés**: 7
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- **Occurrences converties**: 32 (17 auth + 8 RBAC + 7 playlist)
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- **Tests mis à jour**: 20
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- **Tests ajoutés**: 5 (TestErrorContractAuthEndpoints)
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---
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## Prochaines Étapes (Optionnel)
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Si souhaité, migrer les handlers restants (~172 occurrences) dans une P2:
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- `internal/handlers/room_handler.go`
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- `internal/handlers/session.go`
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- `internal/handlers/playlist_handler.go`
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- `internal/handlers/comment_handler.go`
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- Autres handlers
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---
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**Date de création**: 2025-12-15
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**Auteur**: Tech Lead
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**Version**: 1.0
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