修改文件上传逻辑

server/internal/file/internal/logic/fileupload/uploadfilelogic.go

@@ -1,13 +1,20 @@
-// Code scaffolded by goctl. Safe to edit.
-// goctl 1.9.2
-
+// fileupload/upload_file_logic.go
 package fileupload
 
 import (
+	"bytes"
 	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
 
 	"github.com/JACKYMYPERSON/hldrCenter/config"
 	"github.com/JACKYMYPERSON/hldrCenter/internal/file/internal/types"
+	"github.com/aliyun/aliyun-oss-go-sdk/oss"
 	"github.com/gin-gonic/gin"
 
 	"github.com/zeromicro/go-zero/core/logx"
@@ -30,7 +37,203 @@ func NewUploadFileLogic(ctx context.Context, cfg *config.Config, c *gin.Context)
 }
 
 func (l *UploadFileLogic) UploadFile() (resp *types.UploadFileResp, err error) {
-	// todo: add your logic here and delete this line
-
+	// 1. 获取上传文件
+	fileHeader, err := l.c.FormFile("file")
+	if err != nil {
+		l.c.JSON(http.StatusBadRequest, gin.H{
+			"code":    400,
+			"message": "获取文件失败，请重新上传",
+		})
 		return
 	}
+
+	// 2. 打开文件
+	file, err := fileHeader.Open()
+	if err != nil {
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "打开文件失败",
+		})
+		return
+	}
+	defer file.Close()
+
+	// 3. 检查文件大小
+	if fileHeader.Size > l.cfg.FileUpload.MaxFileSize {
+		l.c.JSON(http.StatusBadRequest, gin.H{
+			"code":    400,
+			"message": fmt.Sprintf("文件大小不能超过 %dMB", l.cfg.FileUpload.MaxFileSize>>20),
+		})
+		return
+	}
+
+	// 4. 检查文件类型
+	fileType := fileHeader.Header.Get("Content-Type")
+	allowTypes := strings.Split(l.cfg.FileUpload.AllowFileTypes, ",")
+	isAllowed := false
+	for _, typ := range allowTypes {
+		if strings.TrimSpace(typ) == fileType {
+			isAllowed = true
+			break
+		}
+	}
+	if !isAllowed {
+		l.c.JSON(http.StatusBadRequest, gin.H{
+			"code":    400,
+			"message": fmt.Sprintf("不支持的文件类型，仅允许：%s", l.cfg.FileUpload.AllowFileTypes),
+		})
+		return
+	}
+
+	// 5. 初始化OSS客户端
+	client, err := oss.New(
+		l.cfg.OSS.Endpoint,
+		l.cfg.OSS.AccessKeyID,
+		l.cfg.OSS.AccessKeySecret,
+	)
+	if err != nil {
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "初始化OSS客户端失败",
+		})
+		return
+	}
+
+	// 6. 获取Bucket实例
+	bucket, err := client.Bucket(l.cfg.OSS.BucketName)
+	if err != nil {
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "获取Bucket失败",
+		})
+		return
+	}
+
+	// 7. 生成文件存储路径
+	timestamp := time.Now().Format("20060102150405")
+	fileExt := filepath.Ext(fileHeader.Filename)
+	filename := fmt.Sprintf("%s_%s%s", timestamp, strings.TrimSuffix(fileHeader.Filename, fileExt), fileExt)
+
+	var fileDir string
+	switch {
+	case strings.HasPrefix(fileType, "video/"):
+		fileDir = "videos/"
+	case fileType == "application/pdf":
+		fileDir = "pdfs/"
+	case strings.HasPrefix(fileType, "image/"):
+		fileDir = "images/"
+	case fileType == "text/plain":
+		fileDir = "txts/"
+	case fileType == "application/json":
+		fileDir = "jsons/"
+	default:
+		fileDir = "other/"
+	}
+	objectKey := l.cfg.OSS.ObjectPrefix + fileDir + filename
+
+	// 8. 分片上传（100KB/片）
+	const partSize = 100 * 1024 // 100KB
+	totalSize := fileHeader.Size
+	partCount := (totalSize + partSize - 1) / partSize
+	var partETags []oss.PartETag
+
+	// 重置文件指针
+	if _, err = file.Seek(0, 0); err != nil {
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "重置文件指针失败",
+		})
+		return
+	}
+
+	// 8.1 初始化分片上传
+	imur, err := bucket.InitiateMultipartUpload(objectKey)
+	if err != nil {
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "初始化分片上传失败",
+		})
+		return
+	}
+
+	// 8.2 上传每个分片
+	for i := 1; i <= int(partCount); i++ {
+		partStart := int64((i - 1) * partSize)
+		partEnd := partStart + partSize
+		if partEnd > totalSize {
+			partEnd = totalSize
+		}
+		partLen := partEnd - partStart
+
+		// 读取分片数据
+		data := make([]byte, partLen)
+		if _, err = file.Seek(partStart, 0); err != nil {
+			_ = bucket.AbortMultipartUpload(imur)
+			l.c.JSON(http.StatusInternalServerError, gin.H{
+				"code":    500,
+				"message": fmt.Sprintf("定位分片%d失败", i),
+			})
+			return
+		}
+		if _, err = io.ReadFull(file, data); err != nil && err != io.EOF {
+			_ = bucket.AbortMultipartUpload(imur)
+			l.c.JSON(http.StatusInternalServerError, gin.H{
+				"code":    500,
+				"message": fmt.Sprintf("读取分片%d失败", i),
+			})
+			return
+		}
+
+		// 上传分片（旧版：传入 imur）
+		partResult, err := bucket.UploadPart(imur, i, bytes.NewReader(data))
+		if err != nil {
+			_ = bucket.AbortMultipartUpload(imur)
+			l.c.JSON(http.StatusInternalServerError, gin.H{
+				"code":    500,
+				"message": fmt.Sprintf("上传分片%d失败", i),
+			})
+			return
+		}
+
+		partETags = append(partETags, oss.PartETag{
+			PartNumber: i,
+			ETag:       partResult.ETag,
+		})
+	}
+
+	// 8.3 按分片号排序（必须）
+	sort.Slice(partETags, func(i, j int) bool {
+		return partETags[i].PartNumber < partETags[j].PartNumber
+	})
+
+	// 8.4 完成分片上传（旧版：传入 imur）
+	_, err = bucket.CompleteMultipartUpload(imur, partETags)
+	if err != nil {
+		_ = bucket.AbortMultipartUpload(imur)
+		l.c.JSON(http.StatusInternalServerError, gin.H{
+			"code":    500,
+			"message": "合并分片失败",
+		})
+		return
+	}
+
+	// 9. 返回成功结果
+	fileURL := fmt.Sprintf("https://%s.%s/%s",
+		l.cfg.OSS.BucketName,
+		strings.TrimPrefix(l.cfg.OSS.Endpoint, "https://"),
+		objectKey,
+	)
+
+	l.c.JSON(http.StatusOK, gin.H{
+		"code":    200,
+		"message": "文件上传成功",
+		"data": gin.H{
+			"url":      fileURL,
+			"filename": fileHeader.Filename,
+			"size":     fileHeader.Size,
+			"type":     fileType,
+		},
+	})
+
+	return nil, nil
+}