package thumbnail

import (
	"context"
	"fmt"

	"github.com/sotigr/slic3r-api/internal/cli"
)

// ThumbnailService generates preview images of 3D model files.
type ThumbnailService interface {
	Generate(ctx context.Context, modelPath, outputPath string) error
}

type f3dService struct{}

// NewThumbnailService creates a ThumbnailService backed by the f3d renderer.
func NewThumbnailService() ThumbnailService {
	return &f3dService{}
}

func (s *f3dService) Generate(ctx context.Context, modelPath, outputPath string) error {
	pipe := cli.Pipe{
		Command: "f3d",
		Args: []string{
			modelPath,
			"--resolution=128,128",
			"-a",
			"--anti-aliasing-mode=taa",
			"--filename=false",
			"--metadata=false",
			"--color=#999",
			"-t",
			"--grid=false",
			"--axis=false",
			"--no-background",
			"--output=" + outputPath,
		},
	}

	_, _, err := pipe.Execute(ctx)
	if err != nil {
		return fmt.Errorf("f3d: %w", err)
	}
	return nil
}