feat: init sproutclaw-web — Go+Gin backend + React frontend

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/internal/handlers/webui_config.go

@@ -0,0 +1,92 @@
+package handlers
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"sproutclaw-web/internal/db"
+	"sproutclaw-web/internal/models"
+)
+
+// RegisterWebuiConfig registers WebUI config and avatar routes.
+func RegisterWebuiConfig(r *gin.RouterGroup, database *db.DB) {
+	r.GET("/avatars", handleGetAvatars(database))
+	r.GET("/webui/config", handleGetWebuiConfig(database))
+	r.POST("/webui/config", handleSetWebuiConfig(database))
+	r.POST("/webui/config/delete", handleDeleteWebuiConfig(database))
+}
+
+func handleGetAvatars(database *db.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		user, _ := database.GetConfig("userAvatar")
+		assistant, _ := database.GetConfig("assistantAvatar")
+		c.JSON(http.StatusOK, models.AvatarsResponse{
+			UserAvatar:      normalizeAvatarURL(user),
+			AssistantAvatar: normalizeAvatarURL(assistant),
+		})
+	}
+}
+
+func normalizeAvatarURL(u string) string {
+	if strings.HasPrefix(u, "http://") || strings.HasPrefix(u, "https://") {
+		return u
+	}
+	return ""
+}
+
+func handleGetWebuiConfig(database *db.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		key := c.Query("key")
+		if key != "" {
+			val, _ := database.GetConfig(key)
+			c.JSON(http.StatusOK, gin.H{"key": key, "value": val})
+			return
+		}
+		all, err := database.AllConfig()
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, models.ErrorResponse{Error: err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"entries": all})
+	}
+}
+
+func handleSetWebuiConfig(database *db.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		var req models.WebuiConfigSetRequest
+		if err := c.ShouldBindJSON(&req); err != nil {
+			c.JSON(http.StatusBadRequest, models.ErrorResponse{Error: err.Error()})
+			return
+		}
+		if req.Entries != nil {
+			for k, v := range req.Entries {
+				if err := database.SetConfig(k, v); err != nil {
+					c.JSON(http.StatusInternalServerError, models.ErrorResponse{Error: err.Error()})
+					return
+				}
+			}
+		} else if req.Key != "" {
+			if err := database.SetConfig(req.Key, req.Value); err != nil {
+				c.JSON(http.StatusInternalServerError, models.ErrorResponse{Error: err.Error()})
+				return
+			}
+		}
+		c.JSON(http.StatusOK, models.OKResponse{OK: true})
+	}
+}
+
+func handleDeleteWebuiConfig(database *db.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		var req models.WebuiConfigDeleteRequest
+		if err := c.ShouldBindJSON(&req); err != nil {
+			c.JSON(http.StatusBadRequest, models.ErrorResponse{Error: err.Error()})
+			return
+		}
+		if err := database.DeleteConfig(req.Key); err != nil {
+			c.JSON(http.StatusInternalServerError, models.ErrorResponse{Error: err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, models.OKResponse{OK: true})
+	}
+}