feat: add send document API

config/settings.go

@@ -1,5 +1,5 @@
 package config
 
 const PathQrCode = "statics/images/qrcode"
-const PathSendImage = "statics/images/sendimages"
+const PathSendItems = "statics/images/senditems"
 const DBName = "hydrogenWaCli.db"

controllers/send_controller.go

@@ -19,6 +19,7 @@ func NewSendController(service services.SendService) SendController {
 func (controller *SendController) Route(app *fiber.App) {
 	app.Post("/send/message", controller.SendText)
 	app.Post("/send/image", controller.SendImage)
+	app.Post("/send/file", controller.SendFile)
 }
 
 func (controller *SendController) SendText(c *fiber.Ctx) error {
@@ -63,3 +64,27 @@ func (controller *SendController) SendImage(c *fiber.Ctx) error {
 		Results: response,
 	})
 }
+
+func (controller *SendController) SendFile(c *fiber.Ctx) error {
+	var request structs.SendFileRequest
+	err := c.BodyParser(&request)
+	utils.PanicIfNeeded(err)
+
+	file, err := c.FormFile("file")
+	utils.PanicIfNeeded(err)
+
+	request.File = file
+
+	//add validation send image
+	validations.ValidateSendFile(request)
+
+	request.PhoneNumber = request.PhoneNumber + "@s.whatsapp.net"
+	response, err := controller.Service.SendFile(c, request)
+	utils.PanicIfNeeded(err)
+
+	return c.JSON(utils.ResponseData{
+		Code:    200,
+		Message: "Success",
+		Results: response,
+	})
+}

services/send_service.go

@@ -8,4 +8,5 @@ import (
 type SendService interface {
 	SendText(c *fiber.Ctx, request structs.SendMessageRequest) (response structs.SendMessageResponse, err error)
 	SendImage(c *fiber.Ctx, request structs.SendImageRequest) (response structs.SendImageResponse, err error)
+	SendFile(c *fiber.Ctx, request structs.SendFileRequest) (response structs.SendFileResponse, err error)
 }

services/send_service_impl.go

@@ -53,7 +53,7 @@ func (service SendServiceImpl) SendImage(c *fiber.Ctx, request structs.SendImage
 	}
 
 	// Resize image
-	oriImagePath := fmt.Sprintf("%s/%s", config.PathSendImage, request.Image.Filename)
+	oriImagePath := fmt.Sprintf("%s/%s", config.PathSendItems, request.Image.Filename)
 	err = c.SaveFile(request.Image, oriImagePath)
 	if err != nil {
 		return response, err
@@ -64,7 +64,7 @@ func (service SendServiceImpl) SendImage(c *fiber.Ctx, request structs.SendImage
 		return response, err
 	}
 
-	newImagePath := fmt.Sprintf("%s/new-%s", config.PathSendImage, request.Image.Filename)
+	newImagePath := fmt.Sprintf("%s/new-%s", config.PathSendItems, request.Image.Filename)
 	err = bimg.Write(newImagePath, newImage)
 	if err != nil {
 		return response, err
@@ -117,3 +117,73 @@ func (service SendServiceImpl) SendImage(c *fiber.Ctx, request structs.SendImage
 		return response, nil
 	}
 }
+
+func (service SendServiceImpl) SendFile(c *fiber.Ctx, request structs.SendFileRequest) (response structs.SendFileResponse, err error) {
+	if !service.WaCli.IsLoggedIn() {
+		err = errors.New("you are not loggin")
+		return
+	}
+
+	// Resize image
+	oriFilePath := fmt.Sprintf("%s/%s", config.PathSendItems, request.File.Filename)
+	err = c.SaveFile(request.File, oriFilePath)
+	if err != nil {
+		return response, err
+	}
+
+	removeFile := func(paths ...string) {
+		time.Sleep(5 * time.Second)
+		for _, path := range paths {
+			err := os.Remove(path)
+			if err != nil {
+				fmt.Println("error when delete " + path)
+			}
+		}
+
+	}
+
+	// Send to WA server
+	dataWaRecipient, ok := utils.ParseJID(request.PhoneNumber)
+	if !ok {
+		return response, errors.New("invalid JID " + request.PhoneNumber)
+	}
+	dataWaFile, err := os.ReadFile(oriFilePath)
+	if err != nil {
+		return response, err
+	}
+	uploadedFile, err := service.WaCli.Upload(context.Background(), dataWaFile, whatsmeow.MediaDocument)
+	if err != nil {
+		fmt.Printf("Failed to upload file: %v", err)
+		return response, err
+	}
+
+	msg := &waProto.Message{DocumentMessage: &waProto.DocumentMessage{
+		Url:                 proto.String(uploadedFile.URL),
+		Mimetype:            proto.String(http.DetectContentType(dataWaFile)),
+		Title:               proto.String(request.File.Filename),
+		FileSha256:          uploadedFile.FileSHA256,
+		FileLength:          proto.Uint64(uploadedFile.FileLength),
+		PageCount:           nil,
+		MediaKey:            uploadedFile.MediaKey,
+		FileName:            proto.String(request.File.Filename),
+		FileEncSha256:       uploadedFile.FileEncSHA256,
+		DirectPath:          proto.String(uploadedFile.DirectPath),
+		MediaKeyTimestamp:   nil,
+		ContactVcard:        nil,
+		ThumbnailDirectPath: nil,
+		ThumbnailSha256:     nil,
+		ThumbnailEncSha256:  nil,
+		JpegThumbnail:       nil,
+		ContextInfo:         nil,
+		ThumbnailHeight:     nil,
+		ThumbnailWidth:      nil,
+	}}
+	ts, err := service.WaCli.SendMessage(dataWaRecipient, "", msg)
+	go removeFile(oriFilePath)
+	if err != nil {
+		return response, err
+	} else {
+		response.Status = fmt.Sprintf("File message sent (server timestamp: %s)", ts)
+		return response, nil
+	}
+}

structs/send_struct.go

@@ -63,4 +63,13 @@ type SendImageResponse struct {
 	Status string `json:"status"`
 }
 
+type SendFileRequest struct {
+	PhoneNumber string                `json:"phone_number" form:"phone_number"`
+	File        *multipart.FileHeader `json:"file" form:"file"`
+}
+
+type SendFileResponse struct {
+	Status string `json:"status"`
+}
+
 // ============================== END SEND ==============================

validations/send_validation.go

@@ -55,3 +55,26 @@ func ValidateSendImage(request structs.SendImageRequest) {
 	}
 
 }
+
+func ValidateSendFile(request structs.SendFileRequest) {
+	err := validation.ValidateStruct(&request,
+		validation.Field(&request.PhoneNumber, validation.Required, is.E164, validation.Length(10, 15)),
+		validation.Field(&request.File, validation.Required),
+	)
+
+	if err != nil {
+		panic(utils.ValidationError{
+			Message: err.Error(),
+		})
+	} else if !strings.HasPrefix(request.PhoneNumber, "62") {
+		panic(utils.ValidationError{
+			Message: "this is only work for indonesia country (start with 62)",
+		})
+	}
+
+	if request.File.Size > 10240000 { // 10MB
+		panic(utils.ValidationError{
+			Message: "max file upload is 10MB, please upload in cloud and send via text if your file is higher than 10MB",
+		})
+	}
+}