From c71aad0c7926bf86ef41ebb831aa5eb86eeec640 Mon Sep 17 00:00:00 2001
From: ScuroNeko <nix1304@gmail.com>
Date: Tue, 3 Feb 2026 16:41:34 +0300
Subject: [PATCH] uploader

---
 api.go         | 15 +++++++++++++
 methods.go     |  9 ++++++++
 msg_context.go |  7 ++++++
 types.go       |  7 ++++++
 uploader.go    | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 97 insertions(+)
 create mode 100644 uploader.go

diff --git a/api.go b/api.go
index e4c6645..aa9983e 100644
--- a/api.go
+++ b/api.go
@@ -63,3 +63,18 @@ func (r TelegramRequest[R, P]) Do(bot *Bot) (*R, error) {
 	}
 	return &response.Result, nil
 }
+
+func (b *Bot) GetFileByLink(link string) ([]byte, error) {
+	c := http.DefaultClient
+	u := fmt.Sprintf("https://api.telegram.org/file/bot%s/%s", b.token, link)
+	req, err := http.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	res, err := c.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
+	return io.ReadAll(res.Body)
+}
diff --git a/methods.go b/methods.go
index 2a91af7..723a321 100644
--- a/methods.go
+++ b/methods.go
@@ -155,3 +155,12 @@ func (b *Bot) AnswerCallbackQuery(params *AnswerCallbackQueryP) (bool, error) {
 	}
 	return *ok, err
 }
+
+type GetFileP struct {
+	FileId string `json:"file_id"`
+}
+
+func (b *Bot) GetFile(params *GetFileP) (*File, error) {
+	req := NewRequest[File]("getFile", params)
+	return req.Do(b)
+}
diff --git a/msg_context.go b/msg_context.go
index 748bc41..319dc56 100644
--- a/msg_context.go
+++ b/msg_context.go
@@ -76,6 +76,10 @@ func (ctx *MsgContext) editPhotoText(messageId int, text string, kb *InlineKeybo
 	}
 }
 func (m *AnswerMessage) EditCaption(text string) *AnswerMessage {
+	if m.MessageID == 0 {
+		m.ctx.Bot.logger.Errorln("Can't edit caption message, message id is zero")
+		return m
+	}
 	return m.ctx.editPhotoText(m.MessageID, text, nil)
 }
 func (m *AnswerMessage) EditCaptionKeyboard(text string, kb *InlineKeyboard) *AnswerMessage {
@@ -124,6 +128,9 @@ func (ctx *MsgContext) answerPhoto(photoId, text string, kb *InlineKeyboard) *An
 	msg, err := ctx.Bot.SendPhoto(params)
 	if err != nil {
 		ctx.Bot.logger.Errorln(err)
+		return &AnswerMessage{
+			ctx: ctx, Text: text, IsMedia: true,
+		}
 	}
 	return &AnswerMessage{
 		MessageID: msg.MessageID, ctx: ctx, Text: text, IsMedia: true,
diff --git a/types.go b/types.go
index f2fa3b7..d6c278f 100644
--- a/types.go
+++ b/types.go
@@ -172,3 +172,10 @@ type ReactionCount struct {
 	Type       *ReactionType `json:"type"`
 	TotalCount int           `json:"total_count"`
 }
+
+type File struct {
+	FileId       string `json:"file_id"`
+	FileUniqueID string `json:"file_unique_id"`
+	FileSize     int    `json:"file_size,omitempty"`
+	FilePath     string `json:"file_path,omitempty"`
+}
diff --git a/uploader.go b/uploader.go
new file mode 100644
index 0000000..3c1fadb
--- /dev/null
+++ b/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
+}