Add chunked uploads (Resumable curently broken)

internal/file/handlers.go

@@ -5,8 +5,10 @@ import (
 	"ResendIt/internal/notify"
 	"ResendIt/internal/util"
 	"fmt"
+	"io"
 	"log"
 	"net/http"
+	"os"
 	"path/filepath"
 	"strconv"
 	"time"
@@ -238,3 +240,161 @@ func (h *Handler) Export(c *gin.Context) {
 
 	c.JSON(http.StatusOK, records)
 }
+
+// Chunked stuff
+func (h *Handler) UploadInit(c *gin.Context) {
+	var req struct {
+		Filename    string `json:"filename"`
+		TotalChunks int    `json:"totalChunks"`
+		Size        int64  `json:"size"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(400, gin.H{"error": "invalid request"})
+		return
+	}
+
+	fileID := util.RandomString(32)
+
+	// create temp folder
+	path := filepath.Join("tmp", fileID)
+	if err := os.MkdirAll(path, os.ModePerm); err != nil {
+		c.JSON(500, gin.H{"error": "failed to create temp dir"})
+		return
+	}
+
+	c.JSON(200, gin.H{
+		"fileId": fileID,
+	})
+}
+
+func (h *Handler) UploadChunk(c *gin.Context) {
+	fileID := c.GetHeader("fileId")
+	chunkIndex := c.GetHeader("chunkIndex")
+
+	if fileID == "" || chunkIndex == "" {
+		c.JSON(400, gin.H{"error": "missing headers"})
+		return
+	}
+
+	idx, err := strconv.Atoi(chunkIndex)
+	if err != nil {
+		c.JSON(400, gin.H{"error": "invalid chunkIndex"})
+		return
+	}
+
+	file, err := c.FormFile("chunk")
+	if err != nil {
+		c.JSON(400, gin.H{"error": "missing chunk"})
+		return
+	}
+
+	src, err := file.Open()
+	if err != nil {
+		c.JSON(500, gin.H{"error": "cannot open chunk"})
+		return
+	}
+	defer src.Close()
+
+	chunkPath := filepath.Join("tmp", fileID, fmt.Sprintf("chunk_%d", idx))
+
+	dst, err := os.Create(chunkPath)
+	if err != nil {
+		c.JSON(500, gin.H{"error": "cannot save chunk"})
+		return
+	}
+	defer dst.Close()
+
+	if _, err := io.Copy(dst, src); err != nil {
+		c.JSON(500, gin.H{"error": "write failed"})
+		return
+	}
+
+	c.JSON(200, gin.H{"status": "ok"})
+}
+
+func (h *Handler) UploadComplete(c *gin.Context) {
+	var req struct {
+		FileID      string `json:"fileId"`
+		Filename    string `json:"filename"`
+		TotalChunks int    `json:"totalChunks"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(400, gin.H{"error": "invalid request"})
+		return
+	}
+
+	tmpDir := filepath.Join("tmp", req.FileID)
+
+	// create pipe to stream into your existing service
+	pr, pw := io.Pipe()
+
+	go func() {
+		defer pw.Close()
+
+		for i := 0; i < req.TotalChunks; i++ {
+			chunkPath := filepath.Join(tmpDir, fmt.Sprintf("chunk_%d", i))
+
+			f, err := os.Open(chunkPath)
+			if err != nil {
+				pw.CloseWithError(err)
+				return
+			}
+
+			if _, err := io.Copy(pw, f); err != nil {
+				f.Close()
+				pw.CloseWithError(err)
+				return
+			}
+
+			f.Close()
+		}
+	}()
+
+	// reuse your existing upload logic 👇
+	record, err := h.service.UploadFile(
+		req.Filename,
+		pr,
+		false,
+		24*time.Hour,
+	)
+	if err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
+
+	// cleanup temp
+	_ = os.RemoveAll(tmpDir)
+
+	c.JSON(200, gin.H{
+		"id":       record.ID,
+		"view_key": record.ViewID,
+	})
+}
+
+func (h *Handler) UploadStatus(c *gin.Context) {
+	fileID := c.Param("fileId")
+
+	dir := filepath.Join("tmp", fileID)
+
+	files, err := os.ReadDir(dir)
+	if err != nil {
+		c.JSON(404, gin.H{"error": "not found"})
+		return
+	}
+
+	var uploaded []int
+
+	for _, f := range files {
+		var idx int
+		_, err := fmt.Sscanf(f.Name(), "chunk_%d", &idx)
+		if err == nil {
+			uploaded = append(uploaded, idx)
+		}
+	}
+
+	c.JSON(200, gin.H{
+		"uploadedChunks": uploaded,
+	})
+}

internal/file/routes.go

@@ -16,6 +16,12 @@ func RegisterRoutes(r *gin.RouterGroup, h *Handler) {
 	files.GET("/view/:id", h.View)
 	files.GET("/delete/:del_id", h.Delete)
 
+	// Chunked upload endpoints
+	files.POST("/upload/init", h.UploadInit)
+	files.POST("/upload/chunk", h.UploadChunk)
+	files.POST("/upload/complete", h.UploadComplete)
+	files.GET("/upload/status/:fileId", h.UploadStatus)
+
 	adminRoutes := files.Group("/admin")
 	adminRoutes.Use(middleware.AuthMiddleware())
 	adminRoutes.Use(middleware.RequireRole("admin"))