backend/internal/handler/upload_handler.go

package handler

import (
	"github.com/gin-gonic/gin"

	"carrot_bbs/internal/pkg/response"
	"carrot_bbs/internal/service"
)

// UploadHandler 上传处理器
type UploadHandler struct {
	uploadService *service.UploadService
}

// NewUploadHandler 创建上传处理器
func NewUploadHandler(uploadService *service.UploadService) *UploadHandler {
	return &UploadHandler{
		uploadService: uploadService,
	}
}

// UploadImage 上传图片
func (h *UploadHandler) UploadImage(c *gin.Context) {
	userID := c.GetString("user_id")
	if userID == "" {
		response.Unauthorized(c, "")
		return
	}

	file, err := c.FormFile("image")
	if err != nil {
		response.BadRequest(c, "image file is required")
		return
	}

	url, previewURL, previewURLLarge, err := h.uploadService.UploadImage(c.Request.Context(), file)
	if err != nil {
		response.InternalServerError(c, "failed to upload image")
		return
	}

	response.Success(c, gin.H{
		"url":               url,
		"preview_url":       previewURL,
		"preview_url_large": previewURLLarge,
	})
}

// UploadAvatar 上传头像
func (h *UploadHandler) UploadAvatar(c *gin.Context) {
	userID := c.GetString("user_id")
	if userID == "" {
		response.Unauthorized(c, "")
		return
	}

	file, err := c.FormFile("image")

	if err != nil {
		response.BadRequest(c, "avatar file is required")
		return
	}

	url, err := h.uploadService.UploadAvatar(c.Request.Context(), userID, file)
	if err != nil {
		response.InternalServerError(c, "failed to upload avatar")
		return
	}

	response.Success(c, gin.H{"url": url})
}

// UploadCover 上传头图（个人主页封面）
func (h *UploadHandler) UploadCover(c *gin.Context) {
	userID := c.GetString("user_id")
	if userID == "" {
		response.Unauthorized(c, "")
		return
	}

	file, err := c.FormFile("image")
	if err != nil {
		response.BadRequest(c, "image file is required")
		return
	}

	url, err := h.uploadService.UploadCover(c.Request.Context(), userID, file)
	if err != nil {
		response.InternalServerError(c, "failed to upload cover")
		return
	}

	response.Success(c, gin.H{"url": url})
}