package handler

import (
	"gotest/internal/service"

	"github.com/gin-gonic/gin"
)

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

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

// Upload 文件上传 POST /api/v1/upload?module=enterprise
// module 参数指定上传到哪个模块（enterprise/shop/food/game/app/music/common）
func (h *UploadHandler) Upload(c *gin.Context) {
	module := c.DefaultQuery("module", "common")

	file, err := c.FormFile("file")
	if err != nil {
		FailBadRequest(c, "请选择要上传的文件")
		return
	}

	src, err := file.Open()
	if err != nil {
		FailInternal(c, "文件读取失败")
		return
	}
	defer src.Close()

	url, err := h.uploadService.Upload(module, file.Filename, file.Header.Get("Content-Type"), file.Size, src)
	if err != nil {
		FailBadRequest(c, err.Error())
		return
	}

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

// ListFiles 文件列表 GET /api/v1/upload/list?module=enterprise
func (h *UploadHandler) ListFiles(c *gin.Context) {
	module := c.DefaultQuery("module", "common")

	files, err := h.uploadService.ListFiles(module)
	if err != nil {
		FailInternal(c, "获取文件列表失败: "+err.Error())
		return
	}

	Success(c, gin.H{
		"list":  files,
		"total": len(files),
	})
}

// DeleteFile 删除文件 DELETE /api/v1/upload?module=enterprise&filename=xxx.jpg
func (h *UploadHandler) DeleteFile(c *gin.Context) {
	module := c.DefaultQuery("module", "common")
	filename := c.Query("filename")
	if filename == "" {
		FailBadRequest(c, "文件名不能为空")
		return
	}

	if err := h.uploadService.DeleteFile(module, filename); err != nil {
		FailBadRequest(c, "删除失败: "+err.Error())
		return
	}

	SuccessMsg(c, "删除成功")
}

// GetModules 获取支持的模块列表 GET /api/v1/upload/modules
func (h *UploadHandler) GetModules(c *gin.Context) {
	modules := h.uploadService.GetModules()
	Success(c, gin.H{"modules": modules})
}