git.giacomolli.uk - onechat/blob - image_show.go

   1 package main
   2
   3 import (
   4         "context"
   5         "fmt"
   6         "path/filepath"
   7 )
   8
   9 // ImageShow shows a stored image to the root's user. A configured bot sends it
  10 // to its owner, and the tool result gives terminal clients its name and path.
  11 type ImageShow struct {
  12         store *ImageStore
  13         bot   *TelegramBot
  14 }
  15
  16 // Show checks the stored name and bytes before any output. A refused Telegram
  17 // photo goes as a document. An uncertain send is not repeated.
  18 func (s *ImageShow) Show(ctx context.Context, name, caption string) (string, error) {
  19         data, err := s.store.Read(name)
  20         if err != nil {
  21                 return "", fmt.Errorf("read image to show: %w", err)
  22         }
  23
  24         path, err := filepath.Abs(filepath.Join(s.store.dir, name))
  25         if err != nil {
  26                 return "", fmt.Errorf("find image path: %w", err)
  27         }
  28
  29         if s.bot != nil {
  30                 err = s.bot.api.SendImage(ctx, s.bot.owner, name, data, caption)
  31                 if err != nil {
  32                         return "", fmt.Errorf("show Telegram image: %w", err)
  33                 }
  34         }
  35
  36         return imageText([]string{name}, caption) + "\n" + path, nil
  37 }