Add example for video sending

examples/send_video/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+
+	"github.com/go-telegram/bot"
+	"github.com/go-telegram/bot/models"
+)
+
+// Send any text message to the bot after the bot has been started
+
+func main() {
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
+	defer cancel()
+
+	opts := []bot.Option{
+		bot.WithDefaultHandler(handler),
+	}
+
+	b, err := bot.New(os.Getenv("EXAMPLE_TELEGRAM_BOT_TOKEN"), opts...)
+	if nil != err {
+		// panics for the sake of simplicity.
+		// you should handle this error properly in your code.
+		panic(err)
+	}
+
+	b.Start(ctx)
+}
+
+func handler(ctx context.Context, b *bot.Bot, update *models.Update) {
+	fileData, errReadFile := os.ReadFile("./examples/send_video/examle_video.mp4")
+	if errReadFile != nil {
+		fmt.Printf("error read file, %v\n", errReadFile)
+		return
+	}
+
+	params := &bot.SendVideoParams{
+		ChatID:  update.Message.Chat.ID,
+		Video:   &models.InputFileUpload{Filename: "examle_video.mp4", Data: bytes.NewReader(fileData)},
+		Caption: "New uploaded example video",
+	}
+
+	b.SendVideo(ctx, params)
+}