package rgb

import (
	"fmt"
	"os"
	"strings"

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

func resolveEffectTargets(name string, zones []intrgb.Zone) ([]intrgb.EffectTarget, []intrgb.Zone, error) {
	if name == "static" {
		name = "solid"
	}
	return intrgb.ResolveEffect(name, zones)
}

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),
		RunE: func(_ *cobra.Command, args []string) error {
			zones, err := selectedZones()
			if err != nil {
				return err
			}
			targets, skipped, err := resolveEffectTargets(args[0], zones)
			if err != nil {
				return err
			}
			if len(skipped) > 0 {
				skippedNames := make([]string, len(skipped))
				for i, zone := range skipped {
					skippedNames[i] = string(zone)
				}
				fmt.Fprintf(os.Stderr, "Warning: effect not supported on zone(s): %s\n", strings.Join(skippedNames, ", "))
			}

			proto, _, err := OpenDevice()
			if err != nil {
				return err
			}
			defer proto.Close()

			for _, target := range targets {
				if err := proto.SetValue(via.LEDType(target.Zone.Channel()), uint8(intrgb.EffectID), target.ID); err != nil {
					return fmt.Errorf("set effect on %s: %w", target.Zone, err)
				}
			}

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