package main

import (
	"context"
	"fmt"
	"path/filepath"
)

// ImageShow shows a stored image to the root's user. A configured bot sends it
// to its owner, and the tool result gives terminal clients its name and path.
type ImageShow struct {
	store *ImageStore
	bot   *TelegramBot
}

// Show checks the stored name and bytes before any output. A refused Telegram
// photo goes as a document. An uncertain send is not repeated.
func (s *ImageShow) Show(ctx context.Context, name, caption string) (string, error) {
	data, err := s.store.Read(name)
	if err != nil {
		return "", fmt.Errorf("read image to show: %w", err)
	}

	path, err := filepath.Abs(filepath.Join(s.store.dir, name))
	if err != nil {
		return "", fmt.Errorf("find image path: %w", err)
	}

	if s.bot != nil {
		err = s.bot.api.SendImage(ctx, s.bot.owner, name, data, caption)
		if err != nil {
			return "", fmt.Errorf("show Telegram image: %w", err)
		}
	}

	return imageText([]string{name}, caption) + "\n" + path, nil
}