package cmd

import (
	"fmt"
	"path/filepath"
	"strings"

	"github.com/spf13/cobra"
	"printer.backend/internal/model"
	"printer.backend/internal/svgtemplate"
)

var (
	sizeFlag         float64
	widthFlag        float64
	heightFlag       float64
	cornerRadiusFlag float64
	bleedFlag        float64
	marginFlag       float64
	paddingFlag      float64
	outputFlag       string
)

var generateTemplateCmd = &cobra.Command{
	Use:   "template",
	Short: "Generate an SVG mask template with bleed and margins",
	RunE: func(cmd *cobra.Command, args []string) error {
		spec := model.ItemSpec{
			SizeMM:         sizeFlag,
			WidthMM:        widthFlag,
			HeightMM:       heightFlag,
			CornerRadiusMM: cornerRadiusFlag,
			BleedMM:        bleedFlag,
			MarginMM:       marginFlag,
			PaddingMM:      paddingFlag,
		}
		if err := spec.Normalize(); err != nil {
			return err
		}

		data := svgtemplate.Build(
			spec.WidthMM, spec.HeightMM,
			spec.BleedMM, spec.MarginMM, spec.PaddingMM,
			spec.CornerRadiusMM,
		)

		base := filepath.Base(outputFlag)
		outPath := filepath.Join(svgtemplate.OutputDir, base)
		if err := svgtemplate.WriteFile(outputFlag, data); err != nil {
			return fmt.Errorf("write svg: %w", err)
		}

		name := strings.TrimSuffix(base, filepath.Ext(base))
		item, err := svgtemplate.WriteMeta(base, spec, name)
		if err != nil {
			return fmt.Errorf("write meta: %w", err)
		}

		metaPath := filepath.Join(svgtemplate.OutputDir, model.MetaFilename(base))
		cmd.Printf("Template erfolgreich generiert: %s\n", outPath)
		cmd.Printf("Item-Metadaten gespeichert: %s (Item %s)\n", metaPath, item.ID)
		return nil
	},
}

func init() {
	rootCmd.AddCommand(generateTemplateCmd)
	generateTemplateCmd.Flags().Float64VarP(&sizeFlag, "size", "s", 0, "Square product size in mm (sets width and height)")
	generateTemplateCmd.Flags().Float64VarP(&widthFlag, "width", "w", 0, "Product width in mm")
	generateTemplateCmd.Flags().Float64VarP(&heightFlag, "height", "H", 0, "Product height in mm")
	generateTemplateCmd.Flags().Float64VarP(&cornerRadiusFlag, "radius", "r", 0, "Corner radius in mm")
	generateTemplateCmd.Flags().Float64VarP(&bleedFlag, "bleed", "b", 2.0, "Bleed (Überdruck) in mm")
	generateTemplateCmd.Flags().Float64VarP(&marginFlag, "margin", "m", 5.0, "Margin to the outer elements in mm")
	generateTemplateCmd.Flags().Float64VarP(&paddingFlag, "padding", "p", 3.0, "Inner padding (safety margin) in mm")
	generateTemplateCmd.Flags().StringVarP(&outputFlag, "output", "o", "mask_template.svg", "Output file path")
}