go-whatsapp-web-multidevice/src/services/send_service_impl.go

package services

import (
	"context"
	"errors"
	"fmt"
	"github.com/aldinokemal/go-whatsapp-web-multidevice/config"
	"github.com/aldinokemal/go-whatsapp-web-multidevice/structs"
	"github.com/aldinokemal/go-whatsapp-web-multidevice/utils"
	"github.com/gofiber/fiber/v2"
	fiberUtils "github.com/gofiber/fiber/v2/utils"
	"github.com/h2non/bimg"
	"go.mau.fi/whatsmeow"
	waProto "go.mau.fi/whatsmeow/binary/proto"
	"google.golang.org/protobuf/proto"
	"net/http"
	"os"
	"os/exec"
)

type SendServiceImpl struct {
	WaCli *whatsmeow.Client
}

func NewSendService(waCli *whatsmeow.Client) SendService {
	return &SendServiceImpl{
		WaCli: waCli,
	}
}

func (service SendServiceImpl) SendText(_ *fiber.Ctx, request structs.SendMessageRequest) (response structs.SendMessageResponse, err error) {
	utils.MustLogin(service.WaCli)

	recipient, ok := utils.ParseJID(request.Phone)
	if !ok {
		return response, errors.New("invalid JID " + request.Phone)
	}
	msg := &waProto.Message{Conversation: proto.String(request.Message)}
	ts, err := service.WaCli.SendMessage(recipient, "", msg)
	if err != nil {
		return response, err
	} else {
		response.Status = fmt.Sprintf("Message sent to %s (server timestamp: %s)", request.Phone, ts)
	}
	return response, nil
}

func (service SendServiceImpl) SendImage(c *fiber.Ctx, request structs.SendImageRequest) (response structs.SendImageResponse, err error) {
	utils.MustLogin(service.WaCli)

	// Save image to server
	oriImagePath := fmt.Sprintf("%s/%s", config.PathSendItems, request.Image.Filename)
	err = c.SaveFile(request.Image, oriImagePath)
	if err != nil {
		return response, err
	}
	// Resize image
	openImageBuffer, err := bimg.Read(oriImagePath)
	newImage, err := bimg.NewImage(openImageBuffer).Process(bimg.Options{Quality: 90, Width: 600, Embed: true})
	if err != nil {
		return response, err
	}

	newImagePath := fmt.Sprintf("%s/new-%s", config.PathSendItems, request.Image.Filename)
	err = bimg.Write(newImagePath, newImage)
	if err != nil {
		return response, err
	}

	// Send to WA server
	dataWaCaption := request.Caption
	dataWaRecipient, ok := utils.ParseJID(request.Phone)
	if !ok {
		return response, errors.New("invalid JID " + request.Phone)
	}
	dataWaImage, err := os.ReadFile(newImagePath)
	if err != nil {
		return response, err
	}
	uploadedImage, err := service.WaCli.Upload(context.Background(), dataWaImage, whatsmeow.MediaImage)
	if err != nil {
		fmt.Printf("Failed to upload file: %v", err)
		return response, err
	}

	msg := &waProto.Message{ImageMessage: &waProto.ImageMessage{
		JpegThumbnail: newImage,
		Caption:       proto.String(dataWaCaption),
		Url:           proto.String(uploadedImage.URL),
		DirectPath:    proto.String(uploadedImage.DirectPath),
		MediaKey:      uploadedImage.MediaKey,
		Mimetype:      proto.String(http.DetectContentType(dataWaImage)),
		FileEncSha256: uploadedImage.FileEncSHA256,
		FileSha256:    uploadedImage.FileSHA256,
		FileLength:    proto.Uint64(uint64(len(dataWaImage))),
		ViewOnce:      proto.Bool(request.ViewOnce),
	}}
	ts, err := service.WaCli.SendMessage(dataWaRecipient, "", msg)
	go func() {
		errDelete := utils.RemoveFile(0, oriImagePath, newImagePath)
		if errDelete != nil {
			fmt.Println("error when deleting picture: ", errDelete)
		}
	}()
	if err != nil {
		return response, err
	} else {
		response.Status = fmt.Sprintf("Message sent to %s (server timestamp: %s)", request.Phone, ts)
		return response, nil
	}
}

func (service SendServiceImpl) SendFile(c *fiber.Ctx, request structs.SendFileRequest) (response structs.SendFileResponse, err error) {
	utils.MustLogin(service.WaCli)

	oriFilePath := fmt.Sprintf("%s/%s", config.PathSendItems, request.File.Filename)
	err = c.SaveFile(request.File, oriFilePath)
	if err != nil {
		return response, err
	}

	// Send to WA server
	dataWaRecipient, ok := utils.ParseJID(request.Phone)
	if !ok {
		return response, errors.New("invalid JID " + request.Phone)
	}
	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),
		MediaKey:      uploadedFile.MediaKey,
		FileName:      proto.String(request.File.Filename),
		FileEncSha256: uploadedFile.FileEncSHA256,
		DirectPath:    proto.String(uploadedFile.DirectPath),
	}}
	ts, err := service.WaCli.SendMessage(dataWaRecipient, "", msg)
	go func() {
		errDelete := utils.RemoveFile(0, oriFilePath)
		if errDelete != nil {
			fmt.Println(errDelete)
		}
	}()
	if err != nil {
		return response, err
	} else {
		response.Status = fmt.Sprintf("Document sent to %s (server timestamp: %s)", request.Phone, ts)
		return response, nil
	}
}

func (service SendServiceImpl) SendVideo(c *fiber.Ctx, request structs.SendVideoRequest) (response structs.SendVideoResponse, err error) {
	utils.MustLogin(service.WaCli)

	var (
		videoPath      string
		videoThumbnail string
		deletedItems   []string
	)

	generateUUID := fiberUtils.UUIDv4()
	// Save video to server
	oriVideoPath := fmt.Sprintf("%s/%s", config.PathSendItems, generateUUID+request.Video.Filename)
	err = c.SaveFile(request.Video, oriVideoPath)
	if err != nil {
		return response, err
	}

	// Get thumbnail video with ffmpeg
	thumbnailVideoPath := fmt.Sprintf("%s/%s", config.PathSendItems, generateUUID+".png")
	cmdThumbnail := exec.Command("ffmpeg", "-i", oriVideoPath, "-ss", "00:00:01.000", "-vframes", "1", thumbnailVideoPath)
	err = cmdThumbnail.Run()
	utils.PanicIfNeeded(err, "error when getting thumbnail")

	// Resize Thumbnail
	openImageBuffer, err := bimg.Read(thumbnailVideoPath)
	resize, err := bimg.NewImage(openImageBuffer).Process(bimg.Options{Quality: 90, Width: 600, Embed: true})
	if err != nil {
		return response, err
	}
	thumbnailResizeVideoPath := fmt.Sprintf("%s/%s", config.PathSendItems, generateUUID+"_resize.png")
	err = bimg.Write(thumbnailResizeVideoPath, resize)
	if err != nil {
		return response, err
	}

	deletedItems = append(deletedItems, thumbnailVideoPath)
	deletedItems = append(deletedItems, thumbnailResizeVideoPath)
	videoThumbnail = thumbnailResizeVideoPath

	if request.Compress {
		compresVideoPath := fmt.Sprintf("%s/%s", config.PathSendItems, generateUUID+".mp4")
		// Compress video with ffmpeg
		cmdCompress := exec.Command("ffmpeg", "-i", oriVideoPath, "-strict", "-2", compresVideoPath)
		err = cmdCompress.Run()
		utils.PanicIfNeeded(err, "error when compress video")

		videoPath = compresVideoPath
		deletedItems = append(deletedItems, compresVideoPath)
	} else {
		videoPath = oriVideoPath
		deletedItems = append(deletedItems, oriVideoPath)
	}

	//Send to WA server
	dataWaRecipient, ok := utils.ParseJID(request.Phone)
	if !ok {
		return response, errors.New("invalid JID " + request.Phone)
	}
	dataWaVideo, err := os.ReadFile(videoPath)
	if err != nil {
		return response, err
	}
	uploadedFile, err := service.WaCli.Upload(context.Background(), dataWaVideo, whatsmeow.MediaVideo)
	if err != nil {
		fmt.Printf("Failed to upload file: %v", err)
		return response, err
	}
	dataWaThumbnail, err := os.ReadFile(videoThumbnail)
	if err != nil {
		return response, err
	}

	msg := &waProto.Message{VideoMessage: &waProto.VideoMessage{
		Url:           proto.String(uploadedFile.URL),
		Mimetype:      proto.String(http.DetectContentType(dataWaVideo)),
		Caption:       proto.String(request.Caption),
		FileLength:    proto.Uint64(uploadedFile.FileLength),
		FileSha256:    uploadedFile.FileSHA256,
		FileEncSha256: uploadedFile.FileEncSHA256,
		MediaKey:      uploadedFile.MediaKey,
		DirectPath:    proto.String(uploadedFile.DirectPath),
		ViewOnce:      proto.Bool(request.ViewOnce),
		JpegThumbnail: dataWaThumbnail,
	}}
	ts, err := service.WaCli.SendMessage(dataWaRecipient, "", msg)
	go func() {
		errDelete := utils.RemoveFile(0, deletedItems...)
		if errDelete != nil {
			fmt.Println(errDelete)
		}
	}()
	if err != nil {
		return response, err
	} else {
		response.Status = fmt.Sprintf("Video sent to %s (server timestamp: %s)", request.Phone, ts)
		return response, nil
	}
}