Add theme to user preferences

.gitignore

@@ -162,3 +162,6 @@ go.work.sum
 main
 *.db
 data
+
+# Feature specifications
+spec.md

server/internal/app/init.go

@@ -118,6 +118,7 @@ func setupAdminUser(database db.Database, storageManager storage.Manager, cfg *C
 		DisplayName:  "Admin",
 		PasswordHash: string(hashedPassword),
 		Role:         models.RoleAdmin,
+		Theme:        "dark", // default theme
 	}
 
 	createdUser, err := database.CreateUser(adminUser)
@@ -132,7 +133,8 @@ func setupAdminUser(database db.Database, storageManager storage.Manager, cfg *C
 
 	logging.Info("admin user setup completed",
 		"userId", createdUser.ID,
-		"workspaceId", createdUser.LastWorkspaceID)
+		"workspaceId", createdUser.LastWorkspaceID,
+		"theme", createdUser.Theme)
 
 	return nil
 }

server/internal/db/migrations/postgres/001_initial_schema.up.sql

@@ -7,6 +7,7 @@ CREATE TABLE IF NOT EXISTS users (
     display_name TEXT,
     password_hash TEXT NOT NULL,
     role TEXT NOT NULL CHECK(role IN ('admin', 'editor', 'viewer')),
+    theme TEXT NOT NULL DEFAULT 'dark' CHECK(theme IN ('light', 'dark')),
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     last_workspace_id INTEGER
 );
@@ -19,7 +20,7 @@ CREATE TABLE IF NOT EXISTS workspaces (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     last_opened_file_path TEXT,
     -- Settings fields
-    theme TEXT NOT NULL DEFAULT 'light' CHECK(theme IN ('light', 'dark')),
+    theme TEXT NOT NULL DEFAULT 'dark' CHECK(theme IN ('light', 'dark')),
     auto_save BOOLEAN NOT NULL DEFAULT FALSE,
     git_enabled BOOLEAN NOT NULL DEFAULT FALSE,
     git_url TEXT,

server/internal/db/migrations/sqlite/001_initial_schema.up.sql

@@ -6,6 +6,7 @@ CREATE TABLE IF NOT EXISTS users (
     display_name TEXT,
     password_hash TEXT NOT NULL,
     role TEXT NOT NULL CHECK(role IN ('admin', 'editor', 'viewer')),
+    theme TEXT NOT NULL DEFAULT 'dark' CHECK(theme IN ('light', 'dark')),
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     last_workspace_id INTEGER
 );
@@ -18,7 +19,7 @@ CREATE TABLE IF NOT EXISTS workspaces (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     last_opened_file_path TEXT,
     -- Settings fields
-    theme TEXT NOT NULL DEFAULT 'light' CHECK(theme IN ('light', 'dark')),
+    theme TEXT NOT NULL DEFAULT 'dark' CHECK(theme IN ('light', 'dark')),
     auto_save BOOLEAN NOT NULL DEFAULT 0,
     git_enabled BOOLEAN NOT NULL DEFAULT 0,
     git_url TEXT,

server/internal/handlers/admin_handlers.go

@@ -22,6 +22,7 @@ type CreateUserRequest struct {
 	DisplayName string          `json:"displayName"`
 	Password    string          `json:"password"`
 	Role        models.UserRole `json:"role"`
+	Theme       string          `json:"theme,omitempty"`
 }
 
 // UpdateUserRequest holds the request fields for updating a user
@@ -30,6 +31,7 @@ type UpdateUserRequest struct {
 	DisplayName string          `json:"displayName,omitempty"`
 	Password    string          `json:"password,omitempty"`
 	Role        models.UserRole `json:"role,omitempty"`
+	Theme       string          `json:"theme,omitempty"`
 }
 
 // WorkspaceStats holds workspace statistics
@@ -164,11 +166,24 @@ func (h *Handler) AdminCreateUser() http.HandlerFunc {
 			return
 		}
 
+		// Handle theme with validation and default
+		theme := req.Theme
+		if theme == "" {
+			theme = "dark" // Default theme
+		} else if theme != "light" && theme != "dark" {
+			// Invalid theme, fallback to dark
+			log.Debug("invalid theme value in user creation, falling back to dark",
+				"theme", theme,
+			)
+			theme = "dark"
+		}
+
 		user := &models.User{
 			Email:        req.Email,
 			DisplayName:  req.DisplayName,
 			PasswordHash: string(hashedPassword),
 			Role:         req.Role,
+			Theme:        theme,
 		}
 
 		insertedUser, err := h.DB.CreateUser(user)
@@ -196,6 +211,7 @@ func (h *Handler) AdminCreateUser() http.HandlerFunc {
 			"newUserID", insertedUser.ID,
 			"email", insertedUser.Email,
 			"role", insertedUser.Role,
+			"theme", insertedUser.Theme,
 		)
 		respondJSON(w, insertedUser)
 	}
@@ -322,6 +338,17 @@ func (h *Handler) AdminUpdateUser() http.HandlerFunc {
 			user.Role = req.Role
 			updates["role"] = req.Role
 		}
+		if req.Theme != "" {
+			// Validate theme value, fallback to "dark" if invalid
+			if req.Theme != "light" && req.Theme != "dark" {
+				log.Debug("invalid theme value, falling back to dark",
+					"theme", req.Theme,
+				)
+				req.Theme = "dark"
+			}
+			user.Theme = req.Theme
+			updates["theme"] = req.Theme
+		}
 		if req.Password != "" {
 			hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
 			if err != nil {

server/internal/handlers/user_handlers.go

@@ -16,6 +16,7 @@ type UpdateProfileRequest struct {
 	Email           string `json:"email"`
 	CurrentPassword string `json:"currentPassword"`
 	NewPassword     string `json:"newPassword"`
+	Theme           string `json:"theme"`
 }
 
 // DeleteAccountRequest represents a user account deletion request
@@ -149,6 +150,19 @@ func (h *Handler) UpdateProfile() http.HandlerFunc {
 			updates["displayNameChanged"] = true
 		}
 
+		// Update theme if provided
+		if req.Theme != "" {
+			// Validate theme value, fallback to "dark" if invalid
+			if req.Theme != "light" && req.Theme != "dark" {
+				log.Debug("invalid theme value, falling back to dark",
+					"theme", req.Theme,
+				)
+				req.Theme = "dark"
+			}
+			user.Theme = req.Theme
+			updates["themeChanged"] = true
+		}
+
 		// Update user in database
 		if err := h.DB.UpdateUser(user); err != nil {
 			log.Error("failed to update user in database",

server/internal/handlers/workspace_handlers.go

@@ -104,7 +104,21 @@ func (h *Handler) CreateWorkspace() http.HandlerFunc {
 			return
 		}
 
+		// Get user to access their theme preference
+		user, err := h.DB.GetUserByID(ctx.UserID)
+		if err != nil {
+			log.Error("failed to fetch user from database",
+				"error", err.Error(),
+			)
+			respondError(w, "Failed to get user", http.StatusInternalServerError)
+			return
+		}
+
 		workspace.UserID = ctx.UserID
+		// Use user's theme as default if not provided
+		if workspace.Theme == "" {
+			workspace.Theme = user.Theme
+		}
 		if err := h.DB.CreateWorkspace(&workspace); err != nil {
 			log.Error("failed to create workspace in database",
 				"error", err.Error(),
@@ -145,6 +159,7 @@ func (h *Handler) CreateWorkspace() http.HandlerFunc {
 		log.Info("workspace created",
 			"workspaceID", workspace.ID,
 			"workspaceName", workspace.Name,
+			"theme", workspace.Theme,
 			"gitEnabled", workspace.GitEnabled,
 		)
 		respondJSON(w, workspace)

server/internal/models/user.go

@@ -25,6 +25,7 @@ type User struct {
 	DisplayName     string    `json:"displayName" db:"display_name"`
 	PasswordHash    string    `json:"-" db:"password_hash"`
 	Role            UserRole  `json:"role" db:"role" validate:"required,oneof=admin editor viewer"`
+	Theme           string    `json:"theme" db:"theme" validate:"required,oneof=light dark"`
 	CreatedAt       time.Time `json:"createdAt" db:"created_at,default"`
 	LastWorkspaceID int       `json:"lastWorkspaceId" db:"last_workspace_id"`
 }

server/internal/models/workspace.go

@@ -13,7 +13,7 @@ type Workspace struct {
 	LastOpenedFilePath string    `json:"lastOpenedFilePath" db:"last_opened_file_path"`
 
 	// Integrated settings
-	Theme                string `json:"theme" db:"theme" validate:"oneof=light dark"`
+	Theme                string `json:"theme" db:"theme" validate:"required,oneof=light dark"`
 	AutoSave             bool   `json:"autoSave" db:"auto_save"`
 	ShowHiddenFiles      bool   `json:"showHiddenFiles" db:"show_hidden_files"`
 	GitEnabled           bool   `json:"gitEnabled" db:"git_enabled"`
@@ -40,7 +40,7 @@ func (w *Workspace) ValidateGitSettings() error {
 func (w *Workspace) SetDefaultSettings() {
 
 	if w.Theme == "" {
-		w.Theme = "light"
+		w.Theme = "dark"
 	}
 
 	w.AutoSave = w.AutoSave || false