package svgtemplate

import (
	"encoding/json"
	"fmt"
	"os"
	"path/filepath"
	"time"

	"github.com/google/uuid"
	"printer.backend/internal/model"
)

// WriteMeta writes item metadata next to the SVG in OutputDir.
func WriteMeta(svgBasename string, spec model.ItemSpec, name string) (model.Item, error) {
	if err := os.MkdirAll(OutputDir, 0o755); err != nil {
		return model.Item{}, err
	}

	base := filepath.Base(filepath.Clean(svgBasename))
	item := model.Item{
		ID:          uuid.NewString(),
		Name:        name,
		Spec:        spec,
		SVGTemplate: base,
		CreatedAt:   time.Now().UTC(),
	}

	metaPath := filepath.Join(OutputDir, model.MetaFilename(base))
	data, err := json.MarshalIndent(item, "", "  ")
	if err != nil {
		return model.Item{}, err
	}
	if err := os.WriteFile(metaPath, data, 0o644); err != nil {
		return model.Item{}, fmt.Errorf("write meta: %w", err)
	}
	return item, nil
}