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paopao-ce/internal/routers/api/attachment.go

306 lines
7.8 KiB

package api
import (
"image"
"net/url"
"strings"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
"github.com/disintegration/imaging"
"github.com/gin-gonic/gin"
"github.com/gofrs/uuid"
"github.com/rocboss/paopao-ce/global"
"github.com/rocboss/paopao-ce/internal/model"
"github.com/rocboss/paopao-ce/internal/service"
"github.com/rocboss/paopao-ce/pkg/app"
"github.com/rocboss/paopao-ce/pkg/convert"
"github.com/rocboss/paopao-ce/pkg/errcode"
)
func GeneratePath(s string) string {
n := len(s)
if n <= 2 {
return s
}
return GeneratePath(s[:n-2]) + "/" + s[n-2:]
}
func GetFileExt(s string) (string, error) {
switch s {
case "image/png":
return ".png", nil
case "image/jpg":
return ".jpg", nil
case "image/jpeg":
return ".jpeg", nil
case "image/gif":
return ".gif", nil
case "video/mp4":
return ".mp4", nil
case "video/quicktime":
return ".mov", nil
case "application/zip":
return ".zip", nil
default:
return "", errcode.FileInvalidExt.WithDetails("仅允许 png/jpg/gif/mp4/mov/zip 类型")
}
}
func GetImageSize(img image.Rectangle) (int, int) {
b := img.Bounds()
width := b.Max.X
height := b.Max.Y
return width, height
}
func fileCheck(uploadType string, size int64) error {
if uploadType != "public/video" &&
uploadType != "public/image" &&
uploadType != "public/avatar" &&
uploadType != "attachment" {
return errcode.InvalidParams
}
if size > 1024*1024*100 {
return errcode.FileInvalidSize.WithDetails("最大允许100MB")
}
return nil
}
func UploadAttachment(c *gin.Context) {
response := app.NewResponse(c)
uploadType := c.Request.FormValue("type")
file, fileHeader, err := c.Request.FormFile("file")
if err != nil {
global.Logger.Errorf("api.UploadAttachment err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
return
}
defer file.Close()
if err = fileCheck(uploadType, fileHeader.Size); err != nil {
cErr, _ := err.(*errcode.Error)
response.ToErrorResponse(cErr)
return
}
fileExt, err := GetFileExt(fileHeader.Header.Get("Content-Type"))
if err != nil {
global.Logger.Errorf("GetFileExt err: %v", err)
response.ToErrorResponse(err.(*errcode.Error))
return
}
fileReader, err := fileHeader.Open()
if err != nil {
global.Logger.Errorf("Attachment file read err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
return
}
defer fileReader.Close()
// 生成随机路径
randomPath := uuid.Must(uuid.NewV4()).String()
ossSavePath := uploadType + "/" + GeneratePath(randomPath[:8]) + "/" + randomPath[9:] + fileExt
client, err := oss.New(global.AliossSetting.AliossEndpoint, global.AliossSetting.AliossAccessKeyID, global.AliossSetting.AliossAccessKeySecret)
if err != nil {
global.Logger.Errorf("oss.New err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
return
}
bucket, err := client.Bucket("paopao-assets")
if err != nil {
global.Logger.Errorf("client.Bucket err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
return
}
err = bucket.PutObject(ossSavePath, fileReader)
if err != nil {
global.Logger.Errorf("bucket.PutObject err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
return
}
// 构造附件Model
attachment := &model.Attachment{
FileSize: fileHeader.Size,
Content: "https://" + global.AliossSetting.AliossDomain + "/" + ossSavePath,
}
if userID, exists := c.Get("UID"); exists {
attachment.UserID = userID.(int64)
}
var uploadAttachmentTypeMap = map[string]model.AttachmentType{
"public/image": model.ATTACHMENT_TYPE_IMAGE,
"public/avatar": model.ATTACHMENT_TYPE_IMAGE,
"public/video": model.ATTACHMENT_TYPE_VIDEO,
"attachment": model.ATTACHMENT_TYPE_OTHER,
}
attachment.Type = uploadAttachmentTypeMap[uploadType]
if attachment.Type == model.ATTACHMENT_TYPE_IMAGE {
var src image.Image
src, err = imaging.Decode(file)
if err == nil {
attachment.ImgWidth, attachment.ImgHeight = GetImageSize(src.Bounds())
}
}
attachment, err = service.CreateAttachment(attachment)
if err != nil {
global.Logger.Errorf("service.CreateAttachment err: %v", err)
response.ToErrorResponse(errcode.FileUploadFailed)
}
response.ToResponse(attachment)
}
func DownloadAttachmentPrecheck(c *gin.Context) {
response := app.NewResponse(c)
contentID := convert.StrTo(c.Query("id")).MustInt64()
// 加载content
content, err := service.GetPostContentByID(contentID)
if err != nil {
global.Logger.Errorf("service.GetPostContentByID err: %v", err)
response.ToErrorResponse(errcode.InvalidDownloadReq)
}
user, _ := c.Get("USER")
if content.Type == model.CONTENT_TYPE_CHARGE_ATTACHMENT {
// 加载post
post, err := service.GetPost(content.PostID)
if err != nil {
global.Logger.Errorf("service.GetPost err: %v", err)
response.ToResponse(gin.H{
"paid": false,
})
return
}
// 发布者或管理员免费下载
if post.UserID == user.(*model.User).ID || user.(*model.User).IsAdmin {
response.ToResponse(gin.H{
"paid": true,
})
return
}
// 检测是否有购买记录
response.ToResponse(gin.H{
"paid": service.CheckPostAttachmentIsPaid(post.ID, user.(*model.User).ID),
})
return
}
response.ToResponse(gin.H{
"paid": false,
})
}
func DownloadAttachment(c *gin.Context) {
response := app.NewResponse(c)
contentID := convert.StrTo(c.Query("id")).MustInt64()
// 加载content
content, err := service.GetPostContentByID(contentID)
if err != nil {
global.Logger.Errorf("service.GetPostContentByID err: %v", err)
response.ToErrorResponse(errcode.InvalidDownloadReq)
}
// 收费附件
if content.Type == model.CONTENT_TYPE_CHARGE_ATTACHMENT {
user, _ := c.Get("USER")
// 加载post
post, err := service.GetPost(content.PostID)
if err != nil {
global.Logger.Errorf("service.GetPost err: %v", err)
response.ToResponse(gin.H{
"paid": false,
})
return
}
paidFlag := false
// 发布者或管理员免费下载
if post.UserID == user.(*model.User).ID || user.(*model.User).IsAdmin {
paidFlag = true
}
// 检测是否有购买记录
if service.CheckPostAttachmentIsPaid(post.ID, user.(*model.User).ID) {
paidFlag = true
}
if !paidFlag {
// 未购买,则尝试购买
err := service.BuyPostAttachment(&model.Post{
Model: &model.Model{
ID: post.ID,
},
UserID: post.UserID,
AttachmentPrice: post.AttachmentPrice,
}, user.(*model.User))
if err != nil {
global.Logger.Errorf("service.BuyPostAttachment err: %v", err)
if err == errcode.InsuffientDownloadMoney {
response.ToErrorResponse(errcode.InsuffientDownloadMoney)
} else {
response.ToErrorResponse(errcode.DownloadExecFail)
}
return
}
}
}
// 开始构造下载地址
client, err := oss.New(global.AliossSetting.AliossEndpoint, global.AliossSetting.AliossAccessKeyID, global.AliossSetting.AliossAccessKeySecret)
if err != nil {
global.Logger.Errorf("oss.New err: %v", err)
response.ToErrorResponse(errcode.DownloadReqError)
return
}
bucket, err := client.Bucket("paopao-assets")
if err != nil {
global.Logger.Errorf("client.Bucket err: %v", err)
response.ToErrorResponse(errcode.DownloadReqError)
return
}
// 签名
objectKey := strings.Replace(content.Content, "https://"+global.AliossSetting.AliossDomain+"/", "", -1)
signedURL, err := bucket.SignURL(objectKey, oss.HTTPGet, 60)
if err != nil {
global.Logger.Errorf("client.SignURL err: %v", err)
response.ToErrorResponse(errcode.DownloadReqError)
return
}
ur, err := url.Parse(signedURL)
if err != nil {
global.Logger.Errorf("url.Parse err: %v", err)
response.ToErrorResponse(errcode.DownloadReqError)
return
}
epath, err := url.PathUnescape(ur.Path)
if err != nil {
global.Logger.Errorf("url.PathUnescape err: %v", err)
response.ToErrorResponse(errcode.DownloadReqError)
return
}
ur.Path = epath
ur.RawPath = epath
response.ToResponse(ur.String())
}