jiu/backend/internal/handler/public.go

package handler

import (
	"net/http"

	"github.com/gin-gonic/gin"
	"gorm.io/gorm"

	"github.com/wangjia/jiu/backend/internal/model"
)

type PublicHandler struct {
	db *gorm.DB
}

func NewPublicHandler(db *gorm.DB) *PublicHandler {
	return &PublicHandler{db: db}
}

// GetProduct GET /api/v1/public/products/:public_id (no auth)
func (h *PublicHandler) GetProduct(c *gin.Context) {
	publicID := c.Param("public_id")

	var product model.Product
	if err := h.db.Where("public_id = ? AND deleted_at IS NULL", publicID).
		Preload("Images").
		First(&product).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
		return
	}

	// Return only public-safe fields (no price/stock info)
	c.JSON(http.StatusOK, gin.H{
		"data": gin.H{
			"id":          product.ID,
			"name":        product.Name,
			"series":      product.Series,
			"spec":        product.Spec,
			"brand":       product.Brand,
			"unit":        product.Unit,
			"description": product.Description,
			"images":      product.Images,
		},
	})
}