uploader

uploader.go

@@ -0,0 +1,59 @@
+package laniakea
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"log"
+	"mime/multipart"
+	"net/http"
+	"strconv"
+)
+
+type Uploader struct {
+	bot *Bot
+}
+
+func NewUploader(bot *Bot) *Uploader {
+	return &Uploader{bot: bot}
+}
+func (u *Uploader) UploadPhoto(chatId int, data []byte) error {
+	url := fmt.Sprintf("https://api.telegram.org/bot%s/sendPhoto", u.bot.token)
+
+	buf := bytes.NewBuffer(nil)
+	w := multipart.NewWriter(buf)
+	defer w.Close()
+	err := w.WriteField("chat_id", strconv.Itoa(chatId))
+	if err != nil {
+		return err
+	}
+	fw, err := w.CreateFormFile("photo", "photo.jpg")
+	if err != nil {
+		return err
+	}
+	_, err = fw.Write(data)
+	if err != nil {
+		return err
+	}
+	err = w.Close()
+	if err != nil {
+		return err
+	}
+
+	req, err := http.NewRequest("POST", url, buf)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", w.FormDataContentType())
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	log.Println("upload", string(body))
+	return nil
+}