package rgb

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
	intdevice "github.com/wobkey/rgb/internal/device"
	"github.com/wobkey/rgb/internal/rgb"
	"github.com/wobkey/rgb/internal/via"
)

var effectName string

func NewEffectCmd() *cobra.Command {
	return &cobra.Command{
		Use:   "effect <name>",
		Short: "Set RGB effect",
		Long:  "Set the RGB lighting effect on the connected keyboard.",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			proto, kb, err := OpenDevice()
			if err != nil {
				fmt.Fprintf(os.Stderr, "Error: %v\n", err)
				os.Exit(1)
			}
			defer proto.Close()

			if err := proto.EnableHandshake(); err != nil {
				fmt.Fprintf(os.Stderr, "Handshake failed: %v\n", err)
				os.Exit(1)
			}

			e, err := rgb.ParseEffect(args[0])
			if err != nil {
				fmt.Fprintf(os.Stderr, "Error: %v\n", err)
				os.Exit(1)
			}

			availEffects := GetAvailableEffects(kb)
			if availEffects != nil {
				found := false
				for _, ef := range availEffects {
					if ef == e {
						found = true
						break
					}
				}
				if !found {
					fmt.Fprintf(os.Stderr, "Warning: effect %q may not be supported by %s\n", args[0], kb.Name)
				}
			}

			if err := proto.SetValue(via.RGBLight, uint8(rgb.Mode), uint8(e)); err != nil {
				fmt.Fprintf(os.Stderr, "Error setting effect: %v\n", err)
				os.Exit(1)
			}

			fmt.Printf("Effect set to %q\n", args[0])
		},
	}
}

func GetAvailableEffects(kb intdevice.Keyboard) []rgb.Effect {
	if kb.Name == "Wobkey Impact 80" {
		return []rgb.Effect{
			rgb.Static, rgb.Breathing, rgb.Rainbow, rgb.RainbowWave,
			rgb.Snake, rgb.Tail, rgb.Gradient,
		}
	}
	return nil
}