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Initialise CRUD routes for user service #3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package handlers | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "net/http" | ||
| "peerprep/user/internal/models" | ||
| "peerprep/user/internal/repositories" | ||
| ) | ||
|
|
||
| type UserHandler struct { | ||
| Repo *repositories.UserRepository | ||
| } | ||
|
|
||
| // CreateUserHandler handles user creation | ||
| func (h *UserHandler) CreateUserHandler(w http.ResponseWriter, r *http.Request) { | ||
| var user models.User | ||
| if err := json.NewDecoder(r.Body).Decode(&user); err != nil { | ||
| http.Error(w, "Invalid request payload", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| // Save user using the repository | ||
| if err := h.Repo.CreateUser(&user); err != nil { | ||
| http.Error(w, "Failed to create user", http.StatusInternalServerError) | ||
| return | ||
| } | ||
|
|
||
| w.WriteHeader(http.StatusCreated) | ||
| json.NewEncoder(w).Encode(user) | ||
| } | ||
|
|
||
| // GetUserHandler retrieves a user by ID | ||
| func (h *UserHandler) GetUserHandler(w http.ResponseWriter, r *http.Request) { | ||
| userID := r.URL.Query().Get("id") | ||
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|
||
| if userID == "" { | ||
| http.Error(w, "User ID is required", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| user, err := h.Repo.GetUserByID(userID) | ||
| if err != nil { | ||
| if err == repositories.ErrUserNotFound { | ||
| http.Error(w, "User not found", http.StatusNotFound) | ||
| } else { | ||
| http.Error(w, "Failed to retrieve user", http.StatusInternalServerError) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| json.NewEncoder(w).Encode(user) | ||
| } | ||
|
|
||
| // UpdateUserHandler updates user details | ||
| func (h *UserHandler) UpdateUserHandler(w http.ResponseWriter, r *http.Request) { | ||
| userID := r.URL.Query().Get("id") | ||
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|
||
| if userID == "" { | ||
| http.Error(w, "User ID is required", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| var updates models.User | ||
| if err := json.NewDecoder(r.Body).Decode(&updates); err != nil { | ||
| http.Error(w, "Invalid request payload", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| user, err := h.Repo.UpdateUser(userID, &updates) | ||
| if err != nil { | ||
| if err == repositories.ErrUserNotFound { | ||
| http.Error(w, "User not found", http.StatusNotFound) | ||
| } else { | ||
| http.Error(w, "Failed to update user", http.StatusInternalServerError) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| json.NewEncoder(w).Encode(user) | ||
| } | ||
|
|
||
| // DeleteUserHandler deletes a user by ID | ||
| func (h *UserHandler) DeleteUserHandler(w http.ResponseWriter, r *http.Request) { | ||
| userID := r.URL.Query().Get("id") | ||
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|
||
| if userID == "" { | ||
| http.Error(w, "User ID is required", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| if err := h.Repo.DeleteUser(userID); err != nil { | ||
| if err == repositories.ErrUserNotFound { | ||
| http.Error(w, "User not found", http.StatusNotFound) | ||
| } else { | ||
| http.Error(w, "Failed to delete user", http.StatusInternalServerError) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| w.WriteHeader(http.StatusNoContent) | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| package models | ||
|
|
||
| import ( | ||
| "gorm.io/gorm" | ||
| ) | ||
|
|
||
| // User represents a registered user in the system. | ||
| type User struct { | ||
| gorm.Model | ||
| Username string `gorm:"unique;not null" json:"username"` | ||
| Email string `gorm:"unique;not null" json:"email"` | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package repositories | ||
|
|
||
| import ( | ||
| "errors" | ||
| "peerprep/user/internal/models" | ||
|
|
||
| "gorm.io/gorm" | ||
| ) | ||
|
|
||
| var ErrUserNotFound = errors.New("user not found") | ||
|
|
||
| type UserRepository struct { | ||
| DB *gorm.DB | ||
| } | ||
|
|
||
| func (r *UserRepository) CreateUser(user *models.User) error { | ||
| return r.DB.Create(user).Error | ||
| } | ||
|
|
||
| func (r *UserRepository) GetUserByID(userID string) (*models.User, error) { | ||
| var user models.User | ||
| err := r.DB.First(&user, "user_id = ?", userID).Error | ||
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||
| if errors.Is(err, gorm.ErrRecordNotFound) { | ||
| return nil, ErrUserNotFound | ||
| } | ||
| return &user, err | ||
| } | ||
|
|
||
| func (r *UserRepository) UpdateUser(userID string, updates *models.User) (*models.User, error) { | ||
| var user models.User | ||
| if err := r.DB.First(&user, "user_id = ?", userID).Error; err != nil { | ||
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||
| if errors.Is(err, gorm.ErrRecordNotFound) { | ||
| return nil, ErrUserNotFound | ||
| } | ||
| return nil, err | ||
| } | ||
|
|
||
| if err := r.DB.Model(&user).Updates(updates).Error; err != nil { | ||
| return nil, err | ||
| } | ||
| return &user, nil | ||
| } | ||
|
|
||
| func (r *UserRepository) DeleteUser(userID string) error { | ||
| result := r.DB.Delete(&models.User{}, "user_id = ?", userID) | ||
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||
| if result.RowsAffected == 0 { | ||
| return ErrUserNotFound | ||
| } | ||
| return result.Error | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| package routers | ||
|
|
||
| import ( | ||
| handlers "peerprep/user/internal/handlers" | ||
|
|
||
| "github.com/go-chi/chi/v5" | ||
| ) | ||
|
|
||
| func UserRoutes(r *chi.Mux, userHandler *handlers.UserHandler) { | ||
| r.Route("/api/v1/users", func(r chi.Router) { | ||
| r.Post("/", userHandler.CreateUserHandler) // Create user | ||
| r.Get("/", userHandler.GetUserHandler) // Get user by ID | ||
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| r.Put("/", userHandler.UpdateUserHandler) // Update user | ||
| r.Delete("/", userHandler.DeleteUserHandler) // Delete user | ||
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||
| }) | ||
| } | ||
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