package api

import (
	"net/http"

	"git.pengzhan.dev/noteplace-server/internal/models"
	"git.pengzhan.dev/noteplace-server/internal/store"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

// AttributesHandler handles HTTP requests for attributes.
type AttributesHandler struct {
	Store *store.Store
}

// HandleCreateAttribute creates a new attribute.
func (h *AttributesHandler) HandleCreateAttribute(c *gin.Context) {
	var newAttr models.Attribute
	if err := c.ShouldBindJSON(&newAttr); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
		return
	}

	// --- Validation ---
	user, exists := c.Get("user")
	if !exists {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized: User not found in context"})
		return
	}

	if user.(models.User).Role > models.TRUSTED {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized: User not allowed to perform this action"})
		return
	}

	if newAttr.Name == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "Name is a required field"})
		return
	}

	switch newAttr.Scope {
	case models.CATEGORY:
		if newAttr.OwnerID == "" {
			c.JSON(http.StatusBadRequest, gin.H{"error": "OwnerID (PlaceCategory) is required for CATEGORY attributes"})
			return
		}
	case models.PLACE:
		if newAttr.OwnerID == "" {
			c.JSON(http.StatusBadRequest, gin.H{"error": "OwnerID (PlaceID) is required for PLACE attributes"})
			return
		}
		if _, found := h.Store.GetPlaceByID(newAttr.OwnerID); !found {
			c.JSON(http.StatusBadRequest, gin.H{"error": "OwnerID (PlaceID) does not refer to a valid place"})
			return
		}
	default:
		c.JSON(http.StatusBadRequest, gin.H{"error": "Scope must be either CATEGORY or PLACE"})
		return
	}

	newAttr.ID = "attr-" + uuid.New().String()

	// UserID for attribute creation is not specified in DESIGN.md, assuming it's not directly linked to the creator for now.

	if err := h.Store.CreateAttribute(newAttr); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save attribute"})
		return
	}

	c.JSON(http.StatusCreated, newAttr)
}