package logic

import (
	"context"
	"path"

	"easygoadmin/api/v1"
	"easygoadmin/internal/service"
	"easygoadmin/utility/upload"
)

// ============================== 文件上传业务实现 ==============================

// sUpload 文件上传业务实现
// 实现 service.IUpload 接口，承载文件上传模块的业务逻辑
type sUpload struct{}

func init() {
	service.RegisterUpload(&sUpload{})
}

// UploadFile 上传单文件
//
// 文件先落入临时目录，表单保存时由 SaveFromTemp 转正至正式目录
func (s *sUpload) UploadFile(ctx context.Context, req *v1.UploadFileReq) (res *v1.UploadFileRes, err error) {
	typ := req.Type
	if typ != "image" {
		typ = "file"
	}
	r, err := upload.SaveTemp(ctx, req.File, typ)
	if err != nil {
		return nil, err
	}
	return &v1.UploadFileRes{
		OriginalName:  r.Name,
		FileExtension: r.Ext,
		FileType:      r.Mime,
		FileSize:      r.Size,
		FileName:      path.Base(r.Path),
		FilePath:      r.Path,
		FileUrl:       r.Url,
	}, nil
}

// UploadFiles 批量上传文件
//
// 逐个上传文件，任一文件上传失败时返回错误
func (s *sUpload) UploadFiles(ctx context.Context, req *v1.UploadFilesReq) (res *v1.UploadFilesRes, err error) {
	res = &v1.UploadFilesRes{List: []v1.UploadFileRes{}}
	for _, f := range req.Files {
		if f == nil {
			continue
		}
		one, e := s.UploadFile(ctx, &v1.UploadFileReq{File: f})
		if e != nil {
			return nil, e
		}
		res.List = append(res.List, *one)
	}
	return res, nil
}